| Precipitation (July 1 to date) | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|---|
| Pope Valley (Weeks Lake) | 0.04 | 1.4 | 0.2 | 0.24 | 1.35 | 1.36 |
| St. Helena-North | 0.11 | 1.52 | 0.12 | 0.77 | 0.95 | 2.12 |
| Stags Leap Dist (Chimney Rock) | 0.1 | 1.67 | 0.02 | 0.85 | 0.61 | 1.73 |
| Suscol Lower (Ranch 35) | 0.15 | 2.21 | 0.01 | 0.6 | 0.71 | 1.23 |
| ETo (Jan 1 to date) | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|---|
| Pope Valley (Weeks Lake) | 43.433 | 43.76 | 44.286 | 42.011 | 47.343 | 48.46 |
| St. Helena-North | 39.917 | 37.344 | 38.343 | 37.244 | 41.108 | 41.292 |
| Stags Leap Dist (Chimney Rock) | 39.612 | 39.744 | 41.554 | 39.071 | 44.181 | 43.782 |
| Suscol Lower (Ranch 35) | 41.391 | 40.523 | 41.627 | 34.605 | 44.865 | 43.967 |
| Powdery Mildew Points (by date) | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|---|
| Pope Valley (Weeks Lake) | 0 | 100 | 100 | 40 | 20 | 0 |
| St. Helena-North | 0 | 40 | 100 | 50 | 50 | 0 |
| Stags Leap Dist (Chimney Rock) | 0 | 70 | 60 | 80 | 0 | 0 |
| Suscol Lower (Ranch 35) | 0 | 40 | 60 | 60 | 30 | 0 |
| Growing Degree Days (April 1 to date) | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|---|
| Pope Valley (Weeks Lake) | 3315.1 | 3348.3 | 3748.6 | 3288.5 | 3648.3 | 3654 |
| St. Helena-North | 3465.5 | 3438.3 | 3821.5 | 3289.8 | 3650.7 | 3530.5 |
| Stags Leap Dist (Chimney Rock) | 2890.5 | 2843.9 | 3126.4 | 2711.9 | 3101.2 | 2848.3 |
| Suscol Lower (Ranch 35) | 2647 | 2582.4 | 2848.7 | 2472.7 | 2834.1 | 2517.8 |