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United States · Multi-region weather view

Santa Cruz Mountains

Mountain vineyards between the Pacific coast and Santa Clara Valley.

Elevation, slope exposure, and marine fog create sharp temperature differences over short distances.

Climate comparisons use the 1991–2020 combined regional record · updated through Aug 20, 2026.

Current conditions

Observations through Aug 30, 2026 · 23:50 UTC

Temperature23.3°C
Dew Point11.4°C
Relative Humidity47%
24h Rainfall0.0 mmmodeled IFS total through Aug 29
NWS station average · 1 station

Temperature, dew point, humidity, and wind are averaged using the same locations and weights as the historical record. The current temperature uses 100% of the configured regional weight.

  • BNDC1 — BEN LOMOND · 100% regional weight

NOAA National Weather Service observations. Station readings are point measurements and may not represent every vineyard elevation or exposure.

Vintage explorer

Compare this vintage →

Slightly cooler and significantly drier than normal.

Mean temperature16.9°C
Temperature anomaly-0.1°Cvs 1991-2020
Growing degree days1496base 10°C
Hot days8≥ 32°C

What stood out in 2001

No single weather pattern stands out in the regional record.

Close to the usual range · Low confidence

Temperature, rainfall, heat, and frost all stayed within the site's published thresholds.

No single weather pattern stands out in the regional record.

How unusual was 2001?

The ranking compares vintages that meet the data-coverage threshold and use the same source, regional rules, and 1991-2020 baseline.

Growing-season temperature

16th coolest of 35 vintages Cooler than 19 of 34 other vintages 16.9°C

Growing-season rainfall

7th driest of 35 vintages Drier than 28 of 34 other vintages 67.7 mm

Heat accumulation

16th lowest of 35 vintages Lower than 19 of 34 other vintages 1496 GDD

Hot days

17th most of 35 vintages More than 15 of 34 other vintages 8 days

2001 month by month

Compared with 1991–2020

Follow heat accumulation, rainfall, frost exposure, and the region’s growing and harvest windows in calendar order.

Frost watch Growing season Harvest window
  1. 1–31
    Frost watch

    Heat accumulation

    2001 0 GDD
    Typical 78 GDD

    Rainfall

    2001 66.1 mm
    Typical 113.6 mm
    2001 freezing days
    0
    Typical
    0.0

    Heat accumulation ran behind the typical month.

  2. 1–30
    Frost watchGrowing season

    Heat accumulation

    2001 51 GDD
    Typical 106 GDD

    Rainfall

    2001 43.3 mm
    Typical 52.5 mm
    2001 freezing days
    0
    Typical
    0.0

    Heat accumulation ran behind the typical month.

  3. 1–31
    Frost watchGrowing season

    Heat accumulation

    2001 244 GDD
    Typical 167 GDD

    Rainfall

    2001 0.1 mm
    Typical 23.1 mm
    2001 freezing days
    0
    Typical
    0.0

    Heat accumulation ran ahead of the typical month.

  4. 1–30
    Growing season

    Heat accumulation

    2001 249 GDD
    Typical 222 GDD

    Rainfall

    2001 2.2 mm
    Typical 5.8 mm

    Close to the typical monthly pattern.

  5. 1–31
    Growing season

    Heat accumulation

    2001 252 GDD
    Typical 271 GDD

    Rainfall

    2001 0.7 mm
    Typical 0.7 mm

    Close to the typical monthly pattern.

  6. 1–31
    Growing season

    Heat accumulation

    2001 260 GDD
    Typical 281 GDD

    Rainfall

    2001 1.2 mm
    Typical 1.4 mm

    Close to the typical monthly pattern.

  7. 1–30
    Growing seasonHarvest window

    Heat accumulation

    2001 232 GDD
    Typical 263 GDD

    Rainfall

    2001 3.6 mm
    Typical 2.9 mm

    Close to the typical monthly pattern.

  8. 1–31
    Growing seasonHarvest window

    Heat accumulation

    2001 209 GDD
    Typical 206 GDD

    Rainfall

    2001 16.5 mm
    Typical 34.8 mm

    Drier than the typical month.

View milestone calendar data as a table
Month2001 GDDTypical GDD2001 rainfallTypical rainfall2001 freezing daysTypical freezing days
March 2001 0 GDD 78 GDD 66.1 mm 113.6 mm 00.0
April 2001 51 GDD 106 GDD 43.3 mm 52.5 mm 00.0
May 2001 244 GDD 167 GDD 0.1 mm 23.1 mm 00.0
June 2001 249 GDD 222 GDD 2.2 mm 5.8 mm Outside frost windowOutside frost window
July 2001 252 GDD 271 GDD 0.7 mm 0.7 mm Outside frost windowOutside frost window
August 2001 260 GDD 281 GDD 1.2 mm 1.4 mm Outside frost windowOutside frost window
September 2001 232 GDD 263 GDD 3.6 mm 2.9 mm Outside frost windowOutside frost window
October 2001 209 GDD 206 GDD 16.5 mm 34.8 mm Outside frost windowOutside frost window
Calendar data and method

Monthly values are weighted across every configured regional sample using stored Google ARCO ERA5 daily reanalysis. “Typical” is the mean monthly total across 30 baseline seasons. GDD is counted only inside the configured growing window; freezing days are counted only inside the frost-watch window; rainfall covers every displayed calendar day.

Selected-vintage coverage is 100%. Source rows were last retrieved Aug 20, 2026.

Replay the 2001 growing season

214 daily regional observations

Move through the season to follow temperature, rainfall, accumulated heat, and recorded weather events day by day.

Replay data and method

Daily values are weighted across every configured regional sample using stored Google ARCO ERA5 reanalysis. Coverage is 100%. Source rows were last retrieved Aug 20, 2026.

Closest weather matches

These years had the most similar growing-season and harvest weather.

  1. Closest match

    2023

    Most alike in Hot-day count and Spring frost exposure.

    Hot-day count
    the same: 0 days
    Spring frost exposure
    the same: 0 days

    Largest difference: Growing-season mean temperature — warmer

    View 2023 →

  2. Second closest

    1993

    Most alike in Spring frost exposure and Harvest precipitation.

    Spring frost exposure
    the same: 0 days
    Harvest precipitation
    less rain: 1.5 mm

    Largest difference: Growing-season precipitation — more rain

    View 1993 →

  3. Third closest

    2012

    Most alike in Spring frost exposure and Growing-season mean temperature.

    Spring frost exposure
    the same: 0 days
    Growing-season mean temperature
    cooler: 0.0°C

    Largest difference: Growing-season precipitation — more rain

    View 2012 →
How similar years are calculated

Method analog-v1-2026-07 standardizes six weather measures across 34 complete ARCO ERA5 comparison years, then measures the distance between them. The calculation runs when the page is requested.

Measures used: Growing-season mean temperature (20%); Growing degree days (15%); Hot-day count (15%); Growing-season precipitation (20%); Harvest precipitation (20%); Spring frost exposure (10%).

Calculated distances: 2023 0.187; 1993 0.239; 2012 0.525.

Growing-season temperature anomalyCompared with 1991-2020
Temperature anomaly by vintage, 1991 to 2026 A line above zero indicates a warmer growing season than the 1991–2020 baseline. Select a point to inspect that vintage. +1.6°C −1.6°C 1991 2000 2010 2020 2026
Growing-season rainfall anomaly
Rainfall anomaly by vintage, 1991 to 2026 Bars show millimeters above or below the 1991–2020 growing-season baseline. Select a bar to inspect that vintage. +110 mm −110 mm 1991 2000 2010 2020 2026
View historical chart data as a table
YearTemperature anomalyRainfall anomalyHot days
1991-1.1°C-26 mm3
1992+0.7°C-42 mm2
1993+0.1°C-36 mm9
1994-0.8°C-3 mm5
1995-0.3°C+35 mm9
1996+0.0°C+61 mm12
1997+0.7°C-62 mm8
1998-0.8°C+82 mm8
1999-0.9°C-27 mm7
2000-0.2°C+90 mm7
2001-0.1°C-54 mm8
2002-0.5°C-70 mm12
2003+0.2°C+31 mm13
2004+0.0°C+34 mm9
2005-0.6°C+17 mm1
2006-0.2°C+102 mm7
2007-0.6°C-21 mm5
2008-0.2°C-91 mm14
2009-0.2°C+75 mm10
2010-1.1°C+88 mm9
2011-0.8°C+53 mm3
2012-0.2°C-3 mm4
2013+0.5°C-82 mm4
2014+1.1°C-51 mm11
2015+1.1°C-62 mm16
2016+0.5°C+65 mm7
2017+1.1°C-26 mm18
2018+0.3°C-44 mm1
2019+0.8°C-6 mm13
2020+1.4°C-28 mm25
2021+0.1°C+47 mm7
2022+0.7°C-30 mm12
2023+0.1°C-64 mm8
2024+0.7°C-45 mm14
2025+0.1°C-36 mm3
2026-0.1°C+12 mm0

winter

10.0°C

-0.5°C vs baseline

356 mm rain · -114 mm

spring

14.1°C

+0.3°C vs baseline

109 mm rain · -80 mm

summer

18.3°C

-0.1°C vs baseline

4 mm rain · -4 mm

harvest

17.2°C

-0.5°C vs baseline

20 mm rain · -18 mm

Weather events

Periods that crossed one of the published regional thresholds, shown in date order.

  1. Dry spell

    Duration
    65 days
    Total rain
    0.9 mm
    Daily cutoff
    1.0 mm/day

  2. Heat episode

    Peak temperature
    33.4°C
    Duration
    2 days
    Heat accumulation
    25 GDD

  3. Heat episode

    Peak temperature
    35.6°C
    Duration
    2 days
    Heat accumulation
    28 GDD

  4. Dry spell

    Duration
    90 days
    Total rain
    3.3 mm
    Daily cutoff
    1.0 mm/day

  5. Heat episode

    Peak temperature
    33.5°C
    Duration
    2 days
    Heat accumulation
    27 GDD

  6. Dry spell

    Duration
    34 days
    Total rain
    0.6 mm
    Daily cutoff
    1.0 mm/day
How events are detected

Weather & Vines combined regional series; method event-timeline-v2-2026-07, rules santa-cruz-mountains-catalog-v1-2026-07. Source last updated Aug 1, 2026, calculated Aug 29, 2026. Each configured point must have at least 95.0% coverage.

1991–present

Climate change

Measured regional trends are shown separately from model projections. The observed record ends at the latest complete growing season shared by every published region.

Compare regions

Observed record

Historical trends, 1991–2025

Growing degree days changed +68.6 GDD per decade. The 95% interval is +33.0 to +104.3 GDD per decade, based on 35 eligible vintages.

How it is measured: Across the April 1–October 31 growing season, each day's mean temperature above 10°C adds to the total; cooler days add zero.

Growing degree days · annual change from the 1991–2020 average1991–2025

Scroll horizontally to inspect the full timeline.

View annual growing degree days data
VintageGrowing degree daysChange from 1991–2020
19911287 GDD-228 GDD
19921669 GDD+154 GDD
19931531 GDD+16 GDD
19941337 GDD-178 GDD
19951445 GDD-70 GDD
19961516 GDD+1 GDD
19971657 GDD+142 GDD
19981339 GDD-176 GDD
19991341 GDD-174 GDD
20001471 GDD-44 GDD
20011496 GDD-19 GDD
20021404 GDD-112 GDD
20031559 GDD+43 GDD
20041519 GDD+4 GDD
20051391 GDD-124 GDD
20061459 GDD-56 GDD
20071393 GDD-122 GDD
20081483 GDD-33 GDD
20091478 GDD-37 GDD
20101295 GDD-220 GDD
20111350 GDD-165 GDD
20121476 GDD-39 GDD
20131618 GDD+103 GDD
20141756 GDD+240 GDD
20151746 GDD+231 GDD
20161626 GDD+111 GDD
20171752 GDD+237 GDD
20181568 GDD+53 GDD
20191683 GDD+168 GDD
20201810 GDD+295 GDD
20211532 GDD+17 GDD
20221659 GDD+144 GDD
20231528 GDD+13 GDD
20241666 GDD+151 GDD
20251539 GDD+24 GDD
Growing-season mean temperature
+0.32 °C per decade 95% interval +0.15 to +0.49
Growing degree days
+68.65 GDD per decade 95% interval +32.98 to +104.32
Growing-season precipitation
-9.04 mm per decade 95% interval -23.00 to +4.92
Hot days
+1.37 days per decade 95% interval +0.02 to +2.72
Spring frost days
+0.00 days per decade 95% interval -0.02 to +0.02
Longest dry spell
+5.69 days per decade 95% interval -2.10 to +13.49

Last Updated August 20, 2026

Model ensemble

Projected climate through 2075

Temperature changes are relative to each model’s 1991–2020 baseline. The table combines all three pathways, weighted 70% to SSP2-4.5 and 15% each to SSP1-2.6 and SSP3-7.0.

Scroll horizontally to compare all columns.

PeriodWeighted medianWeighted central 80%Models per pathway
2021-2040+0.8°C+0.4 to +1.2°C25
2041-2060+1.3°C+0.9 to +2.0°C25
2061-2075+1.7°C+1.2 to +2.6°C25
How pathways are combined

For each period and percentile, Weather & Vines takes 70% of the SSP2-4.5 value, 15% of the SSP1-2.6 value, and 15% of the SSP3-7.0 value. Each pathway contains the same 25 models. The weights are an editorial view of the current trajectory, not scenario probabilities.

Last Updated June 29, 2025

Compare projection measures across regions

Typical year · 1991–2020

When to visit

This calendar describes typical regional weather under the selected climate baseline. It is not a forecast for a future trip, and it does not account for crowds, lodging, events, or vineyard access.

Deterministic IFS forecast

Next ten days

Detailed forecast outlook

ECMWF IFS 0.25° via Herbie · model run Aug 30, 2026 at 00:00 UTC · retrieved Aug 30, 2026 at 08:22 UTC

Scroll horizontally to see all forecast dates.

DateSunMonTueWedThuFriSatSunMonTue
High 27°C 24°C 22°C 24°C 24°C 26°C 24°C 29°C 26°C 25°C
Low 13°C 12°C 14°C 11°C 12°C 15°C 13°C 13°C 19°C 19°C
Rain 0.0 mm 0.0 mm 0.0 mm 0.0 mm 0.0 mm 0.0 mm 0.0 mm 0.0 mm 0.2 mm 1.8 mm

Across the typical year: Late August has the warmest median afternoon high (25.6°C); Late December has the coolest (14.9°C). Wet days are most frequent in Late February (44%) and least frequent in Late July (0%). Ties are resolved by calendar order.

Typical afternoon highs and overnight lowsMedians and middle 50% of daily readings

Afternoon highOvernight lowMiddle 50%

Scroll horizontally to inspect all 24 half-month periods.

Typical afternoon highs and overnight lows for Santa Cruz Mountains Median daily maximum and minimum temperatures for 24 early and late-month periods under the 1991–2020 baseline. Neutral bands show the 25th to 75th percentile. 0°C5°C10°C15°C20°C25°C30°C JanFebMarAprMayJunJulAugSepOctNovDec
How often a day is wetShare of days with at least 1 mm of rain

Scroll horizontally to inspect all 24 half-month periods.

Wet-day frequency through the typical year for Santa Cruz Mountains The fraction of days receiving at least one millimeter of rain in each early and late-month period under the 1991–2020 baseline. 0%25%50%75%100% JanFebMarAprMayJunJulAugSepOctNovDec
View all 24 periods as a table

Scroll horizontally to view all columns.

Santa Cruz Mountains typical weather by half-month, 1991–2020
PeriodAfternoon high, median (middle 50%)Overnight low, median (middle 50%)Wet-day frequencyPeriod rain, median (middle 50%)
Jan 1–1515.2°C (13.1–17.3°C)4.9°C (2.8–7.0°C)32%39.8 mm (6.5–128.9 mm)
Jan 16–3115.7°C (13.6–18.5°C)5.0°C (3.0–7.2°C)36%51.8 mm (19.6–149.6 mm)
Feb 1–1516.4°C (14.4–19.2°C)5.6°C (3.3–7.8°C)34%57.0 mm (15.3–92.3 mm)
Feb 16–2915.7°C (13.6–18.7°C)5.8°C (3.8–7.5°C)44%73.6 mm (24.7–123.1 mm)
Mar 1–1517.6°C (14.8–20.7°C)6.1°C (4.0–8.2°C)36%48.7 mm (23.4–79.3 mm)
Mar 16–3118.3°C (15.8–20.9°C)6.5°C (4.8–8.1°C)33%34.8 mm (11.5–83.1 mm)
Apr 1–1518.6°C (16.2–21.0°C)6.7°C (5.0–8.4°C)25%22.4 mm (9.5–63.0 mm)
Apr 16–3020.2°C (17.6–23.5°C)7.5°C (6.1–9.1°C)18%13.9 mm (7.9–24.7 mm)
May 1–1521.0°C (18.9–23.7°C)8.5°C (7.1–9.9°C)11%4.1 mm (0.3–18.7 mm)
May 16–3121.3°C (19.3–23.8°C)9.5°C (8.2–10.8°C)10%1.8 mm (0.4–19.2 mm)
Jun 1–1523.1°C (21.2–25.6°C)10.2°C (9.0–11.3°C)4%0.6 mm (0.2–4.2 mm)
Jun 16–3024.3°C (22.4–26.7°C)10.8°C (9.6–12.1°C)3%0.3 mm (0.1–0.9 mm)
Jul 1–1524.8°C (23.1–27.1°C)11.6°C (10.7–12.4°C)0%0.2 mm (0.1–0.4 mm)
Jul 16–3125.1°C (23.7–27.0°C)12.3°C (11.5–13.1°C)0%0.2 mm (0.1–0.5 mm)
Aug 1–1525.6°C (23.9–27.7°C)12.1°C (11.0–13.2°C)0%0.3 mm (0.2–0.5 mm)
Aug 16–3125.6°C (23.8–27.5°C)12.1°C (11.1–13.1°C)1%0.2 mm (0.1–0.5 mm)
Sep 1–1525.3°C (23.5–28.2°C)11.6°C (10.4–12.8°C)1%0.3 mm (0.2–0.5 mm)
Sep 16–3025.2°C (22.9–28.7°C)11.2°C (10.0–12.2°C)2%0.4 mm (0.1–1.7 mm)
Oct 1–1524.2°C (21.3–27.8°C)10.1°C (8.5–11.5°C)7%0.8 mm (0.2–11.5 mm)
Oct 16–3122.6°C (19.8–25.8°C)9.0°C (7.3–10.3°C)13%4.7 mm (1.3–23.8 mm)
Nov 1–1519.5°C (17.4–23.0°C)7.3°C (5.3–9.0°C)21%21.7 mm (4.6–43.6 mm)
Nov 16–3017.5°C (15.5–19.7°C)5.8°C (3.9–7.8°C)27%33.6 mm (13.5–64.0 mm)
Dec 1–1515.6°C (14.2–17.6°C)5.0°C (2.9–7.9°C)38%66.4 mm (22.9–119.6 mm)
Dec 16–3114.9°C (13.1–16.9°C)4.0°C (2.2–6.1°C)33%56.8 mm (9.5–131.1 mm)

Each year contributes to temperature or rain separately when at least 90% of that period’s days are present. A value is shown only when at least 80% of the baseline years qualify. February 29 is included in late February.

Historical climatology Last Updated August 20, 2026

Season to date

Growing season heat and rainfall

Apr 1–Aug 29, 2026

Growing degree days1014.1base 10°C
Growing-season rainfall133.5 mmweighted regional total
Cumulative growing degree daysBase 10°C

2026 season1991–2020 average

Growing degree days accumulated during the 2026 growing season The solid line accumulates daily mean temperature above 10 degrees Celsius from the configured growing-season start. The dashed line shows the 1991–2020 daily climatological average. 1014 GDD 0 Apr ’26MayJunJulAug
Cumulative growing-season rainfallRegional weighted mean

2026 season1991–2020 average

Rainfall accumulated during the 2026 growing season The solid line accumulates daily rainfall in millimeters from the configured growing-season start. The dashed line shows the 1991–2020 daily climatological average. 134 mm 0 Apr ’26MayJunJulAug
View growing-season accumulation data
DateSeason GDD1991–2020 average GDDSeason rainfall1991–2020 average rainfall
2026-04-014.33.03.8 mm2.6 mm
2026-04-026.75.97.3 mm3.5 mm
2026-04-0310.58.67.3 mm5.7 mm
2026-04-0417.511.27.3 mm8.6 mm
2026-04-0525.913.77.3 mm11.8 mm
2026-04-0631.816.47.3 mm13.7 mm
2026-04-0736.819.37.3 mm18.1 mm
2026-04-0843.021.97.3 mm20.5 mm
2026-04-0949.924.77.4 mm21.6 mm
2026-04-1055.327.716.5 mm22.6 mm
2026-04-1158.730.743.5 mm26.1 mm
2026-04-1260.633.967.5 mm29.8 mm
2026-04-1363.237.070.4 mm33.4 mm
2026-04-1465.739.970.4 mm34.1 mm
2026-04-1568.442.970.4 mm34.7 mm
2026-04-1672.446.170.4 mm36.5 mm
2026-04-1776.649.670.4 mm38.9 mm
2026-04-1881.653.070.4 mm39.7 mm
2026-04-1986.956.870.4 mm40.3 mm
2026-04-2091.161.077.0 mm42.3 mm
2026-04-2193.765.4109.0 mm43.0 mm
2026-04-2296.069.6114.5 mm44.0 mm
2026-04-2399.473.6117.5 mm45.6 mm
2026-04-24103.778.0117.5 mm46.8 mm
2026-04-25106.682.4117.9 mm48.5 mm
2026-04-26109.487.0118.9 mm48.9 mm
2026-04-27111.891.6119.4 mm49.8 mm
2026-04-28114.895.9119.4 mm50.8 mm
2026-04-29119.2100.8119.4 mm52.1 mm
2026-04-30124.3105.9119.4 mm52.5 mm
2026-05-01129.4111.2119.4 mm53.3 mm
2026-05-02134.1116.7119.4 mm54.2 mm
2026-05-03137.9122.1119.5 mm54.9 mm
2026-05-04140.6127.2119.9 mm55.5 mm
2026-05-05143.8131.9121.9 mm56.5 mm
2026-05-06149.3136.6121.9 mm56.9 mm
2026-05-07155.5141.7121.9 mm57.9 mm
2026-05-08161.1146.8121.9 mm58.6 mm
2026-05-09166.6151.7122.0 mm58.9 mm
2026-05-10172.3156.5122.1 mm59.1 mm
2026-05-11179.2161.3122.1 mm59.3 mm
2026-05-12185.6166.2122.1 mm60.1 mm
2026-05-13190.4171.1122.1 mm60.8 mm
2026-05-14195.5176.2122.1 mm61.3 mm
2026-05-15201.2181.9122.1 mm63.0 mm
2026-05-16206.3187.6122.1 mm65.4 mm
2026-05-17210.7193.1122.1 mm66.6 mm
2026-05-18219.8198.6122.1 mm68.0 mm
2026-05-19228.4204.1122.1 mm69.5 mm
2026-05-20237.5209.6122.1 mm70.8 mm
2026-05-21245.5215.0122.1 mm71.7 mm
2026-05-22251.8220.4122.1 mm71.9 mm
2026-05-23257.7225.9122.1 mm72.1 mm
2026-05-24263.4231.4122.1 mm72.3 mm
2026-05-25268.9236.9122.1 mm72.8 mm
2026-05-26273.0242.2122.5 mm73.1 mm
2026-05-27277.6247.9122.6 mm73.8 mm
2026-05-28282.0253.8129.7 mm74.8 mm
2026-05-29286.6259.9131.2 mm75.3 mm
2026-05-30291.8266.2131.2 mm75.4 mm
2026-05-31298.1273.0131.2 mm75.6 mm
2026-06-01306.3279.9131.2 mm75.7 mm
2026-06-02312.5286.7131.2 mm75.8 mm
2026-06-03319.3293.5131.2 mm76.1 mm
2026-06-04326.0300.2131.2 mm77.7 mm
2026-06-05333.0306.7131.2 mm77.9 mm
2026-06-06339.1312.9131.2 mm78.0 mm
2026-06-07344.0319.2131.2 mm78.1 mm
2026-06-08349.2325.8131.2 mm78.4 mm
2026-06-09356.2333.1131.7 mm78.6 mm
2026-06-10365.3340.6131.7 mm78.7 mm
2026-06-11378.1347.7131.7 mm78.7 mm
2026-06-12388.5354.7131.7 mm78.7 mm
2026-06-13397.5362.1131.7 mm78.8 mm
2026-06-14405.6369.7131.7 mm78.9 mm
2026-06-15413.9376.7131.7 mm79.0 mm
2026-06-16422.1383.7131.7 mm79.6 mm
2026-06-17429.9391.0131.7 mm80.0 mm
2026-06-18437.4398.9131.8 mm80.0 mm
2026-06-19444.6406.6131.8 mm80.1 mm
2026-06-20452.2414.2131.8 mm80.1 mm
2026-06-21460.0421.9131.8 mm80.1 mm
2026-06-22468.0429.4131.9 mm80.1 mm
2026-06-23476.0437.0131.9 mm80.1 mm
2026-06-24484.0444.6131.9 mm80.1 mm
2026-06-25491.7452.8131.9 mm80.2 mm
2026-06-26498.4460.9131.9 mm80.3 mm
2026-06-27504.9469.3132.1 mm80.4 mm
2026-06-28511.8477.6132.1 mm80.9 mm
2026-06-29519.8485.9132.1 mm81.2 mm
2026-06-30527.3494.5132.1 mm81.5 mm
2026-07-01533.6503.0132.1 mm81.5 mm
2026-07-02540.4511.1132.1 mm81.5 mm
2026-07-03548.0519.5132.1 mm81.6 mm
2026-07-04556.3527.6132.2 mm81.6 mm
2026-07-05564.6535.6132.2 mm81.6 mm
2026-07-06572.4543.7132.5 mm81.6 mm
2026-07-07578.1552.2132.6 mm81.6 mm
2026-07-08585.0560.8132.6 mm81.7 mm
2026-07-09592.8569.5132.6 mm81.7 mm
2026-07-10600.3578.1132.6 mm81.7 mm
2026-07-11608.1586.7132.6 mm81.8 mm
2026-07-12618.7595.5132.6 mm81.8 mm
2026-07-13631.2604.4132.7 mm81.8 mm
2026-07-14644.0613.3132.7 mm81.8 mm
2026-07-15656.1622.1132.7 mm81.8 mm
2026-07-16665.0631.1132.7 mm81.9 mm
2026-07-17672.4640.0132.7 mm81.9 mm
2026-07-18680.9648.8132.7 mm81.9 mm
2026-07-19689.2657.7132.7 mm81.9 mm
2026-07-20698.8666.6132.8 mm82.0 mm
2026-07-21713.3675.5132.8 mm82.0 mm
2026-07-22724.4684.5133.0 mm82.0 mm
2026-07-23732.9693.7133.0 mm82.0 mm
2026-07-24742.2702.8133.0 mm82.0 mm
2026-07-25751.4711.8133.0 mm82.0 mm
2026-07-26760.8720.9133.0 mm82.1 mm
2026-07-27769.6729.8133.0 mm82.1 mm
2026-07-28778.7738.7133.0 mm82.1 mm
2026-07-29787.3747.4133.0 mm82.1 mm
2026-07-30796.1756.4133.0 mm82.1 mm
2026-07-31805.1765.4133.0 mm82.2 mm
2026-08-01814.8774.6133.0 mm82.2 mm
2026-08-02825.0783.8133.0 mm82.2 mm
2026-08-03834.5792.7133.0 mm82.2 mm
2026-08-04843.1801.4133.0 mm82.3 mm
2026-08-05852.2810.1133.0 mm82.3 mm
2026-08-06861.9818.9133.0 mm82.4 mm
2026-08-07871.4827.6133.0 mm82.5 mm
2026-08-08880.7836.5133.0 mm82.5 mm
2026-08-09890.7845.8133.0 mm82.5 mm
2026-08-10899.4855.0133.0 mm82.5 mm
2026-08-11908.5864.1133.0 mm82.5 mm
2026-08-12916.9873.3133.0 mm82.5 mm
2026-08-13925.1883.0133.1 mm82.6 mm
2026-08-14932.8892.6133.3 mm82.6 mm
2026-08-15941.1902.3133.4 mm82.7 mm
2026-08-16950.0911.8133.4 mm82.7 mm
2026-08-17958.9920.7133.4 mm82.7 mm
2026-08-18967.9929.3133.4 mm82.7 mm
2026-08-19977.2937.9133.4 mm82.9 mm
2026-08-20985.9946.4133.5 mm83.3 mm
2026-08-21994.7955.1133.5 mm83.3 mm
2026-08-221003.7964.1133.5 mm83.3 mm
2026-08-231014.1973.0133.5 mm83.3 mm

Forecast outlook

ECMWF IFS 0.25° via Herbie · run Aug 30, 2026 at 00:00 UTC

10-day totals compared with the 1991–2020 combined regional record

GDD accumulation
92 GDDvs 94 GDD average
Total rainfall
2.1 mmvs 0.4 mm average

No unusually hot or wet period stands out in the short-range forecast.

Sun8/30 27°Cavg 26°C 13°Cavg 12°C +9 GDD 0.0 mm
Mon8/31 24°Cavg 26°C 12°Cavg 12°C +7 GDD 0.0 mm
Tue9/1 22°Cavg 27°C 14°Cavg 12°C +7 GDD 0.0 mm
Wed9/2 24°Cavg 27°C 11°Cavg 12°C +7 GDD 0.0 mm
Thu9/3 24°Cavg 27°C 12°Cavg 12°C +8 GDD 0.0 mm
Fri9/4 26°Cavg 26°C 15°Cavg 12°C +9 GDD 0.0 mm
Sat9/5 24°Cavg 27°C 13°Cavg 12°C +8 GDD 0.0 mm
Sun9/6 29°Cavg 28°C 13°Cavg 12°C +12 GDD 0.0 mm
Mon9/7 26°Cavg 28°C 19°Cavg 12°C +12 GDD 0.2 mm
Tue9/8 25°Cavg 26°C 19°Cavg 12°C +13 GDD 1.8 mm

Data and methods

Show data sources and model assumptions

Current temperature, dew point, humidity, and wind use geographically weighted NWS station observations. The 24-hour rain total and 10-day outlook use the 00 UTC deterministic ECMWF IFS 0.25° public forecast retrieved directly with Herbie. Historical temperature and rain combine qualifying GHCN-D stations with ERA5 by geographic area; a missing station day uses the nearest ERA5 value for that station's area. Climate comparisons use 1991–2020.

Forecast comparisons use the 1991–2020 combined regional daily record. Daily high and low averages use the matching date; rainfall and GDD sum the same calendar dates as the forecast period.

This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF). Weather & Vines subsets, converts, and regionally weights the forecast fields. ECMWF data are published under CC BY 4.0. ECMWF accepts no liability for errors, omissions, availability, loss, or damage arising from their use.

Climate projections use NASA NEX-GDDP-CMIP6 v2.0, accessed August 23, 2026, with 25 models. Weather & Vines subsets and aggregates the source fields. Source files and derived projection data are under CC BY-SA 4.0; the full roster and limitations are listed in the climate atlas methods.

The Santa Cruz Mountains model uses a April 1–October 31 growing season, base 10°C GDD, and an operational hot-day marker of 32°C.

The historical series uses 1 ERA5 location, 15 temperature stations, and 13 rain stations. Interpretation confidence: high. Geometry confidence: reviewed-approximate. Rules: santa-cruz-mountains-catalog-v1-2026-07.