| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rockpile Lower (Cooley) | 12/9/25 | 71.0 6.2 | 1427 | 47.1 4.2 | 0617 | 46.2 0.2 | 73 | 92 8 | 40 16 | 1.7 | 9.7 0.4 | 1352 | WNW | 288 | 0.00 | 9.81 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/9/25 | 64.2 1.6 | 1430 | 46.3 2.9 | 0655 | 43.7 0.1 | 70 | 89 11 | 45 1 | 9.2 | 20.6 0.4 | 0007 | NW | 321 | 0.00 | 10.06 | 0.077 0.002 | 266 1 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/9/25 | 56.8 1.8 | 1358 | 37.0 3.3 | 2004 | -20.3 | - | - | - | 1.2 | 8.8 2.1 | 1238 | SSW | 205 | 0.01 | 7.70 | 0.043 0.006 | 210 30 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/9/25 | 55.9 2.7 | 1304 | 38.5 1.1 | 0714 | 43.9 0.9 | 96 | 100 0 | 79 4 | 2.4 | 11.3 1.1 | 1433 | SW | 218 | 0.02 | 8.32 | 0.029 0.006 | 153 18 | 0 0 |
| Geyserville-North (Hoffman) | 12/9/25 | 50.9 0.2 | 1524 | 37.6 0.4 | 2013 | 42.2 0.0 | 96 | 98 0 | 86 1 | 1.4 | 7.5 0.2 | 1427 | SE | 137 | 0.00 | 0.00 | 0.020 0.000 | 105 6 | 0 0 |
| Geyserville (Ranch 3) | 12/9/25 | 50.4 0.1 | 1509 | 37.8 0.3 | 1956 | 42.9 0.3 | 99 | 100 0 | 86 1 | 1.4 | 7.8 0.2 | 1340 | ESE | 102 | 0.00 | 7.62 | 0.020 0.000 | 120 7 | 0 0 |
| Geyserville-East (Ranch 40) | 12/9/25 | 50.6 1.8 | 1602 | 38.0 1.0 | 0720 | 42.3 0.4 | 100 | 100 0 | 97 1 | 1.8 | 9.2 0.0 | 1419 | S | 189 | 0.01 | 7.95 | 0.020 0.000 | 132 5 | 0 0 |
| Geyserville-South (Nervo Station) | 12/9/25 | 49.2 0.5 | 1516 | 40.6 0.1 | 0743 | - | - | - | - | 0.9 | 6.4 1.0 | 1346 | SE | 134 | 0.02 | 6.13 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/9/25 | 52.4 0.4 | 1542 | 38.5 0.8 | 1924 | 42.6 0.2 | 98 | 100 0 | 79 4 | 0.9 | 5.0 0.7 | 1445 | WSW | 246 | 0.01 | 7.79 | 0.019 0.000 | 105 0 | 0 0 |
| Jimtown-NE (Red Fan) | 8/26/25 | 88.9 0.8 | 1609 | 56.4 0.1 | 0146 | 53.1 1.9 | 64 | 94 2 | 20 8 | 3.5 | 13.4 0.5 | 1919 | S | 169 | 0.00 | 0.00 | 0.187 0.011 | 528 30 | 0 0 |
| HWY 128/Chalk Hill Rd (Landslide) | 12/9/25 | 56.4 0.6 | 1310 | 36.6 0.6 | 2011 | 41.8 0.0 | 94 | 100 0 | 67 2 | 1.5 | 7.5 0.0 | 1334 | SSW | 206 | 0.00 | 8.29 | 0.029 0.002 | 144 3 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/9/25 | 53.8 0.8 | 1506 | 38.4 0.8 | 1955 | 41.6 0.0 | 95 | 100 0 | 74 2 | 1.4 | 6.4 0.4 | 1330 | S | 169 | 0.00 | 8.32 | 0.026 0.004 | 136 20 | - |
| Knights Valley (Bavarian Lion) | 12/9/25 | 60.9 2.6 | 1351 | 35.7 0.6 | 2037 | 40.6 0.3 | 92 | 98 0 | 59 4 | 1.2 | 5.7 0.1 | 1550 | SSE | 157 | 0.01 | 8.55 | 0.034 0.002 | 175 4 | - |
| Upper Dry Creek Valley | 12/9/25 | 49.3 1.2 | 1329 | 40.9 3.6 | 0729 | 43.1 0.8 | 97 | 98 0 | 90 8 | 1.5 | 8.4 0.6 | 1402 | SE | 129 | 0.00 | 8.15 | 0.020 0.001 | 105 4 | - |
| Lower Dry Creek Valley | 12/9/25 | 50.4 0.3 | 1552 | 41.7 1.7 | 0501 | 43.7 0.3 | 100 | 100 0 | 83 2 | 1.8 | 8.5 0.2 | 1353 | SE | 138 | 0.01 | 8.46 | 0.017 0.002 | 90 6 | 0 0 |
| Max | 71.0 | - | 47.1 | - | 46.2 | 100 | 100 | 97 | 9.2 | 20.6 | - | - | 0.02 | 10.06 | 0.077 | 266 | - | |
| Avg | - | - | - | - | 38.0 | 92 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 49.2 | - | 35.7 | - | -20.3 | 70 | 89 | 40 | 0.9 | 5.0 | - | - | 0.00 | 0.00 | 0.017 | 90 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Healdsburg-South (Sodini) | 12/9/25 | 52.5 0.5 | 1549 | 40.2 1.1 | 1854 | - | - | 100 0 | 77 4 | 0.2 | 6.0 0.6 | 1415 | 0.01 | 2.32 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/9/25 | 50.7 1.9 | 1531 | 40.7 1.0 | 0849 | 40.3 0.3 | 87 | 90 1 | 82 0 | 1.0 | 5.8 1.3 | 1415 | 0.01 | 8.73 | 0.018 0.002 | 98 12 | - |
| Windsor-East (Ranch 16) | 12/9/25 | 54.9 1.3 | 1531 | 39.4 1.6 | 0745 | 42.3 0.5 | 94 | 100 0 | 72 0 | 1.4 | 7.4 0.2 | 1420 | 0.00 | 6.49 | 0.029 0.003 | 157 19 | 0 |
| Mark West-North (Ranch 14) | 12/9/25 | 53.5 0.6 | 1508 | 39.8 0.7 | 0744 | 42.2 0.7 | 94 | 98 0 | 72 4 | 1.0 | 6.9 0.6 | 1407 | 0.00 | 7.48 | 0.002 0.000 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/9/25 | 51.5 0.2 | 1541 | 38.6 2.0 | 1848 | 42.7 0.9 | 98 | 100 0 | 81 2 | 1.1 | 7.3 1.7 | 1418 | 0.01 | 1.85 | 0.018 0.001 | 100 6 | 0 |
| Fulton-NW (Ranch 5) | 12/9/25 | 51.5 0.3 | 1556 | 39.7 2.9 | 1824 | -7.8 5.6 | 32 | 100 0 | 3 0 | 1.0 | 6.8 0.4 | 1418 | 0.01 | 7.58 | 0.027 0.001 | 114 4 | 0 |
| Windsor-South (Laughlin Rd) | 12/9/25 | 53.2 0.8 | 1522 | 40.7 2.7 | 0815 | -27.7 10.4 | 26 | 100 0 | 0 0 | - | - | - | 0.00 | 7.09 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/9/25 | 53.4 0.0 | 1535 | 40.2 0.7 | 0746 | 42.3 0.2 | 92 | 98 0 | 73 0 | 1.1 | 7.2 0.2 | 1357 | 0.00 | 7.08 | - | - | - |
| Fulton-SW (Ranch 21) | 12/9/25 | 51.9 0.1 | 1515 | 40.2 1.5 | 0808 | -41.2 7.3 | 21 | 100 0 | 0 0 | 1.3 | 7.9 0.4 | 1418 | 0.01 | 7.44 | 0.032 0.001 | 140 2 | - |
| Santa Rosa-NW (Goldfields) | 12/9/25 | 53.8 0.1 | 1542 | 40.4 2.8 | 0733 | 43.0 0.5 | 96 | 100 0 | 73 1 | 1.3 | 8.3 1.0 | 1456 | 0.01 | 7.73 | 0.018 0.001 | 94 1 | - |
| Goldfields Remote | 12/9/25 | 52.5 0.3 | 1507 | 38.8 1.9 | 1901 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/9/25 | 52.6 0.2 | 1525 | 40.4 3.5 | 0821 | 43.5 0.4 | 99 | 100 0 | 82 3 | 1.1 | 6.8 0.7 | 1441 | 0.00 | 6.00 | - | - | - |
| River Rd South (Denner Ranch) | 12/9/25 | 53.5 1.5 | 1554 | 40.7 2.4 | 1854 | 43.4 0.5 | 98 | 100 0 | 77 4 | 1.6 | 7.5 0.7 | 1356 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/9/25 | 53.5 0.4 | 1548 | 40.6 1.8 | 0822 | 42.9 0.4 | 96 | 100 0 | 74 0 | 0.9 | 6.0 0.2 | 1511 | 0.00 | 8.11 | 0.002 0.000 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/9/25 | 53.8 0.0 | 1506 | 41.2 1.4 | 0847 | 43.4 0.4 | 96 | 100 0 | 75 2 | - | - | - | 0.01 | 7.15 | - | - | - |
| Guerneville Rd West (Balletto) | 12/9/25 | 51.7 0.5 | 1512 | 39.5 3.4 | 1848 | 43.1 0.5 | 97 | 100 0 | 82 1 | 1.3 | 6.7 0.0 | 1501 | 0.01 | 5.83 | - | - | - |
| Sanchietti Ranch | 12/9/25 | 52.2 0.5 | 1516 | 41.4 2.5 | 1823 | 44.4 0.2 | - | 100 0 | 86 2 | 1.9 | 7.9 1.3 | 1444 | 0.00 | 6.97 | - | - | - |
| Occidental Rd (Sebastopol) | 12/9/25 | 54.0 0.6 | 1438 | 39.7 1.2 | 1850 | 43.1 0.3 | 98 | 100 0 | 61 1 | 1.1 | 7.2 0.9 | 1409 | 0.01 | 5.80 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/9/25 | 48.5 3.9 | 1602 | 39.7 1.7 | 1927 | 43.0 0.6 | 99 | 100 0 | 93 17 | 0.8 | 5.3 0.5 | 1431 | 0.01 | 8.43 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/9/25 | 52.9 2.2 | 1420 | 41.8 0.6 | 0704 | 42.8 0.7 | 95 | 98 0 | 76 5 | 0.9 | 4.7 0.5 | 1117 | 0.00 | 9.27 | - | - | - |
| Korbel (Winery) | 12/9/25 | 52.0 2.9 | 1448 | 42.1 0.2 | 0736 | 43.1 0.5 | 96 | 100 0 | 81 7 | 0.7 | 7.1 0.1 | 1504 | 0.00 | 9.43 | - | - | - |
| Forestville (Shone Farms) | 12/9/25 | 47.6 3.8 | 1443 | 39.3 1.3 | 0821 | 42.5 0.5 | 98 | 99 0 | 97 14 | 1.1 | 5.6 1.4 | 1454 | 0.02 | 9.15 | 0.014 0.002 | 67 11 | 0 |
| Forestville-NE (Ranch 30) | 12/9/25 | 46.7 5.3 | 1523 | 39.9 0.8 | 1920 | 42.5 0.2 | 100 | 100 0 | 99 15 | 1.4 | 5.0 1.9 | 0824 | 0.01 | 8.60 | 0.013 0.003 | 69 18 | - |
| Green Valley Vineyard | 12/9/25 | 49.4 1.1 | 1602 | 40.8 2.1 | 1815 | 42.6 0.3 | 98 | 99 0 | 92 6 | 0.9 | 4.6 0.4 | 1013 | 0.01 | 9.90 | 0.001 0.000 | 4 4 | - |
| Green Valley (Sanchietti) | 12/9/25 | 51.1 0.6 | 1519 | 41.7 3.6 | 1910 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/9/25 | 49.7 0.4 | 1546 | 42.1 4.4 | 0844 | 43.7 0.7 | 100 | 100 0 | 95 4 | - | - | - | 0.01 | 8.58 | - | - | - |
| Graton-South (Mill Station Rd) | 12/9/25 | 53.8 3.0 | 1513 | 39.2 1.1 | 1902 | 43.0 0.3 | 97 | 100 0 | 80 2 | 0.1 | 3.3 0.7 | 1529 | 0.00 | 8.34 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/9/25 | 49.2 1.4 | 1604 | 39.9 0.1 | 0535 | 42.7 0.0 | - | 100 0 | 100 5 | - | - | - | 0.01 | 8.40 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/9/25 | 49.8 0.1 | 1534 | 38.6 0.2 | 1851 | 43.2 0.2 | 99 | 100 0 | 91 0 | 1.6 | 6.4 0.4 | 0938 | 0.00 | 6.97 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/9/25 | 48.6 0.8 | 1542 | 40.3 0.0 | 0805 | 42.8 0.0 | 100 | 100 0 | 98 6 | 0.2 | 5.5 0.3 | 1534 | 0.00 | 7.40 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/9/25 | 63.1 1.1 | 1441 | 49.3 5.3 | 0645 | 46.3 0.3 | 71 | 86 11 | 54 3 | 2.9 | 9.1 0.7 | 2338 | 0.00 | 13.08 | 0.057 0.006 | 240 1 | - |
| Max | 63.1 | - | 49.3 | - | 46.3 | 100 | 100 | 100 | 2.9 | 9.1 | - | 0.02 | 13.08 | 0.057 | 240 | - | |
| Avg | - | - | - | - | 35.6 | 88 | - | - | 1.1 | - | - | - | - | - | - | - | |
| Min | 46.7 | - | 38.6 | - | -41.2 | 21 | 86 | 0 | 0.1 | 3.3 | - | 0.00 | 1.85 | 0.001 | 0 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Upper Rincon Valley | 12/9/25 | 53.5 3.7 | 1438 | 34.3 0.2 | 0606 | 40.9 1.2 | 98 0 | 74 11 | 0.9 0.1 | 5.1 0.3 | 1453 | S | 172 | 0.00 | 5.39 | 0.043 0.014 | 241 62 | - |
| Lower Bennett Valley | 12/9/25 | 54.2 1.5 | 1336 | 38.5 1.2 | 0738 | 41.9 0.1 | 100 0 | 76 5 | 1.5 0.1 | 9.4 1.8 | 1141 | NW | 321 | 0.01 | 6.51 | 0.031 0.006 | 176 39 | 0 0 |
| Kenwood (Wildwood) | 12/9/25 | 45.0 1.0 | 1550 | 39.6 0.9 | 0644 | 42.2 0.2 | 100 0 | 100 4 | 1.6 0.2 | 6.2 1.8 | 1227 | WSW | 250 | 0.01 | 6.85 | 0.016 0.001 | 88 13 | - |
| Sonoma Valley (Bedrock) | 12/9/25 | 45.5 1.1 | 1511 | 39.5 0.2 | 0434 | 41.0 0.0 | 98 0 | 88 4 | - | - | - | - | 0.00 | 6.71 | - | - | - |
| Sonoma-West (Arnold) | 12/9/25 | 47.4 0.3 | 1523 | 41.0 1.0 | 0739 | 42.8 0.1 | 100 0 | 86 3 | 1.3 0.0 | 6.7 0.1 | 1154 | E | 92 | 0.00 | 4.40 | 0.016 0.001 | 79 1 | - |
| Sonoma Valley HS | 12/9/25 | 47.0 0.4 | 1535 | 40.7 1.3 | 0738 | 43.2 0.4 | 100 0 | 93 3 | 1.3 0.1 | 4.5 1.1 | 1821 | SSW | 195 | 0.00 | 4.65 | 0.015 0.001 | 71 5 | - |
| Sonoma East (Bundschu01) | 12/9/25 | 47.5 0.5 | 1507 | 40.7 1.7 | 0705 | 42.0 0.2 | 97 2 | 87 3 | 1.7 0.2 | 8.3 0.7 | 0541 | ENE | 75 | 0.00 | 0.13 | 0.016 0.001 | 76 9 | - |
| Schellville (Sasaki) | 12/8/25 | 48.2 0.5 | 1512 | 42.7 0.1 | 0740 | 42.6 0.2 | 95 1 | 83 0 | 1.2 0.0 | 9.8 2.3 | 1356 | NE | 55 | 0.00 | 4.40 | - | - | 0 0 |
| Sonoma-SE (Napoli) | 12/9/25 | 48.2 0.2 | 1428 | 40.9 1.4 | 0746 | 42.1 0.1 | 96 1 | 86 3 | 0.6 0.1 | 6.1 1.3 | 0018 | ENE | 59 | 0.00 | 4.46 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/9/25 | 47.8 1.9 | 1509 | 40.8 1.3 | 0647 | 42.1 0.2 | 97 2 | 84 7 | 2.2 0.3 | 7.5 2.0 | 1301 | ESE | 114 | 0.00 | 4.89 | 0.017 0.002 | 82 6 | - |
| Carneros (Ranch 71) | 12/9/25 | 46.9 0.1 | 1446 | 39.9 1.1 | 0558 | 42.3 0.1 | 100 0 | 93 6 | 1.4 0.1 | 7.2 1.1 | 1417 | E | 99 | 0.00 | 4.47 | 0.015 0.000 | 79 2 | 0 0 |
| Carneros Upper (Ranch 81) | 12/9/25 | 47.3 1.2 | 1439 | 40.0 2.1 | 0545 | 0.8 5.2 | - | - | 2.0 0.6 | 9.3 1.5 | 1428 | SSE | 160 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/7/25 | 47.6 1.6 | 1421 | 42.0 4.3 | 0731 | 42.8 0.8 | 100 0 | 85 6 | 1.2 0.2 | 6.6 2.1 | 0151 | NNE | 32 | 0.00 | 4.76 | 0.015 0.003 | 60 12 | - |
| Rohnert Park-West (Stony Point) | 12/9/25 | 50.1 1.1 | 1502 | 41.6 3.3 | 0820 | 43.3 0.3 | 100 0 | 86 4 | 3.4 0.6 | 11.7 0.8 | 0310 | SE | 126 | 0.00 | 1.56 | - | - | - |
| Cartograph Wines Base | 12/9/25 | 50.0 1.1 | 1451 | 41.2 0.1 | 0705 | 43.2 0.0 | 100 0 | 88 4 | 3.3 0.2 | 10.7 1.1 | 1523 | SE | 140 | 0.00 | 6.66 | 0.021 0.004 | 128 20 | - |
| Cartograph Wines Remote | 12/9/25 | 49.6 0.5 | 1337 | 40.3 3.2 | 1811 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/9/25 | 51.4 0.9 | 1434 | 40.6 5.7 | 1803 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/9/25 | 48.6 1.3 | 1348 | 40.7 0.9 | 0841 | 42.2 0.1 | 98 0 | 82 6 | 5.7 1.1 | 13.7 3.1 | 1514 | ESE | 120 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/9/25 | 43.9 0.4 | 1504 | 39.0 0.9 | 0745 | 41.4 0.2 | 100 0 | 100 0 | 3.9 0.3 | 10.3 1.9 | 1729 | E | 92 | 0.00 | 5.80 | 0.014 0.000 | 82 3 | 0 0 |
| Petaluma (Ranch 10) | 12/9/25 | 49.3 1.6 | 1342 | 41.9 0.6 | 0813 | 42.5 0.1 | 97 1 | 81 6 | 2.5 0.3 | 5.7 0.7 | 0233 | SE | 137 | 0.00 | 4.29 | 0.018 0.003 | 84 10 | 0 0 |
| Max | 54.2 | - | 42.7 | - | 43.3 | 100 | 100 | 5.7 | 13.7 | - | - | 0.01 | 6.85 | 0.043 | 241 | - | |
| Avg | - | - | - | - | 39.8 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 43.9 | - | 34.3 | - | 0.8 | 95 | 74 | 0.6 | 4.5 | - | - | 0.00 | 0.10 | 0.014 | 71 | - |