Climate by region
Zinfandel / Primitivo
Also listed as Zinfandel, Primitivo
Zinfandel and Primitivo name the same variety in California and southern Italy, where high heat and long dry spells are common.
Regional figures use 1991–2020 from the combined regional record · updated through Aug 20, 2026.
Climate by region
1991–2020 averages calculated from complete combined regional records.
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| Region | Growing season | Mean temperature | GDD | Rain | Hot days | Harvest rain | Last updated |
|---|---|---|---|---|---|---|---|
| PugliaItaly | Mar 15–Oct 31 | 20.6°C | 2463 GDD | 309.5 mm | 1.5 | 139.7 mm | Aug 20, 2026 |
| LodiUnited States | Mar 15–Oct 31 | 20.6°C | 2449 GDD | 133.8 mm | 27.4 | 29.0 mm | Aug 20, 2026 |
| Paso Robles & Santa Barbara CountyUnited States | Mar 15–Oct 31 | 17.7°C | 1777 GDD | 103.9 mm | 1.1 | 20.4 mm | Aug 20, 2026 |
References and alternate names
- Australian Wine Research Institute: heatwaves and their effects on grapevines reviewed 2026-08-14
- Washington State University Viticulture & Enology: growing degree days, base temperature, and season heat accumulation reviewed 2026-08-14
- UC Agriculture and Natural Resources: vineyard water demand, evapotranspiration, and vine water stress reviewed 2026-08-14
- UC IPM: Botrytis bunch rot, late-season moisture and rot risk reviewed 2026-08-14
- VIVC cultivar passport: Primitivo (Zinfandel) reviewed 2026-08-11
Search recognizes the alternate names listed above.