| 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) | 4/1/26 | 55.1 6.7 | 1344 | 45.4 1.9 | 2359 | 47.4 1.5 | 91 | 100 0 | 66 5 | 3.4 | 19.2 7.1 | 2258 | NNW | 338 | 0.21 | 37.42 | - | - | 70 10 |
| Rockpile Upper (Cooley) | 4/1/26 | 52.2 7.7 | 1347 | 40.8 2.8 | 0055 | 45.8 1.7 | 96 | 100 0 | 71 13 | 8.3 | 37.3 12.3 | 2303 | NW | 326 | 0.24 | 38.10 | 0.041 0.005 | 195 32 | 70 10 |
| Cloverdale-East (Ranch 83) | 4/1/26 | 59.4 6.6 | 1405 | 44.6 4.2 | 0056 | 49.4 1.8 | - | - | - | 2.9 | 15.7 0.3 | 2251 | NW | 311 | 0.12 | 31.37 | 0.044 0.011 | 134 26 | 50 10 |
| Cloverdale-SE (Ranch 38) | 4/1/26 | 57.7 5.7 | 1505 | 45.8 2.9 | 0058 | 49.4 1.8 | 90 | 100 3 | 69 1 | 5.1 | 23.3 5.1 | 1705 | NW | 315 | 0.10 | 32.90 | 0.040 0.009 | 122 38 | 40 10 |
| Geyserville-North (Hoffman) | 4/1/26 | 62.1 4.8 | 1411 | 47.5 1.7 | 0101 | 50.3 1.8 | 86 | 96 0 | 57 3 | 3.0 | 17.2 3.1 | 1633 | SW | 230 | 0.00 | 25.50 | 0.043 0.004 | 121 6 | 0 10 |
| Geyserville (Ranch 3) | 4/1/26 | 62.3 5.9 | 1412 | 48.9 1.0 | 0059 | 50.8 1.8 | 87 | 100 0 | 52 4 | 3.2 | 16.1 2.4 | 2330 | WNW | 296 | 0.07 | 32.01 | 0.049 0.003 | 148 4 | 50 10 |
| Geyserville-East (Ranch 40) | 4/1/26 | 60.5 6.5 | 1432 | 46.1 2.8 | 0057 | 49.8 1.1 | 91 | 100 2 | 64 0 | 5.7 | 18.3 5.3 | 1759 | SW | 224 | 0.07 | 32.50 | 0.040 0.010 | 126 16 | 50 10 |
| Geyserville-South (Nervo Station) | 4/1/26 | 60.5 8.6 | 1420 | 48.0 0.7 | 0058 | - | - | - | - | 2.2 | 16.5 0.3 | 2337 | WNW | 290 | 0.05 | 25.02 | - | - | 80 10 |
| Jimtown-North (Piccolo Ranch 15) | 4/1/26 | 60.5 5.1 | 1439 | 48.9 1.5 | 0059 | 50.5 0.8 | 87 | 100 0 | 55 6 | 2.7 | 15.4 2.2 | 1707 | SW | 220 | 0.02 | 29.77 | 0.043 0.002 | 118 6 | 80 10 |
| HWY 128/Chalk Hill Rd (Landslide) | 4/1/26 | 60.2 6.6 | 1435 | 50.3 0.2 | 0101 | 50.3 2.1 | 85 | 97 0 | 59 0 | 3.6 | 14.1 1.8 | 1448 | S | 186 | 0.03 | 28.59 | 0.020 0.024 | 8 138 | 70 10 |
| N Chalk Hill Rd (Ranch 63) | 4/1/26 | 60.3 5.7 | 1401 | 48.6 0.9 | 0335 | 48.4 2.7 | 86 | 100 0 | 57 3 | 3.3 | 13.6 4.7 | 2344 | WNW | 298 | 0.02 | 30.09 | 0.047 0.006 | 131 12 | 70 10 |
| Knights Valley (Bavarian Lion) | 4/1/26 | 59.1 7.0 | 1430 | 48.6 0.5 | 0101 | 48.9 2.3 | 85 | 97 0 | 55 5 | 3.3 | 13.8 5.8 | 1438 | SSW | 208 | 0.06 | 28.29 | 0.050 0.008 | 146 13 | 70 10 |
| Upper Dry Creek Valley | 4/1/26 | 62.3 3.4 | 1508 | 49.6 0.8 | 0059 | 49.5 2.2 | 84 | 97 0 | 53 3 | 2.9 | 14.0 5.4 | 2216 | WNW | 303 | 0.10 | 34.98 | 0.062 0.009 | 203 37 | 80 10 |
| Lower Dry Creek Valley | 4/1/26 | 63.4 3.7 | 1424 | 49.7 0.2 | 0059 | 50.4 2.1 | 86 | 100 0 | 50 8 | 1.8 | 15.8 0.8 | 0014 | WNW | 296 | 0.04 | 33.78 | 0.064 0.010 | 216 46 | 50 10 |
| Max | 63.4 | - | 50.3 | - | 50.8 | 96 | 100 | 71 | 8.3 | 37.3 | - | - | 0.24 | 38.10 | 0.064 | 216 | - | |
| Avg | - | - | - | - | 49.3 | 88 | - | - | 3.7 | - | - | - | - | - | - | - | - | |
| Min | 52.2 | - | 40.8 | - | 45.8 | 84 | 96 | 50 | 1.8 | 13.6 | - | - | 0.00 | 25.02 | 0.020 | 8 | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Windsor-NW (Ranch 8) | 4/1/26 | 60.6 7.8 | 1223 | 50.9 1.0 | 0059 | 49.3 2.0 | 82 | 86 2 | 68 1 | 3.0 | 20.8 8.2 | 1717 | 0.12 | 29.49 | 0.065 0.016 | 231 58 | 10 |
| Windsor-East (Ranch 16) | 4/1/26 | 61.3 6.7 | 1427 | 50.0 2.1 | 0059 | 50.8 2.2 | 86 | 100 4 | 57 2 | 3.4 | 13.7 2.3 | 1655 | 0.10 | 22.31 | 0.058 0.014 | 175 39 | 60 |
| Mark West-North (Ranch 14) | 4/1/26 | 62.2 5.5 | 1213 | 50.6 1.7 | 0059 | 50.7 2.5 | 85 | 97 1 | 54 1 | 1.9 | 11.6 3.4 | 1416 | 0.16 | 24.14 | 0.011 0.003 | 0 0 | 60 |
| Windsor-SE (Silk Rd) | 4/1/26 | 61.3 7.2 | 1234 | 50.5 2.1 | 0101 | 50.9 2.7 | 86 | 98 2 | 58 2 | 4.2 | 16.0 2.3 | 1718 | 0.18 | 21.52 | 0.074 0.026 | 256 104 | 60 |
| Fulton-NW (Ranch 5) | 4/1/26 | 61.3 6.5 | 1430 | 51.4 1.2 | 0057 | 47.8 5.9 | 83 | 100 5 | 3 55 | 3.7 | 15.4 0.3 | 1813 | 0.21 | 24.50 | 0.066 0.022 | 211 68 | 60 |
| Windsor-South (Laughlin Rd) | 2/27/26 | 81.3 4.8 | 1431 | 49.4 1.9 | 0637 | 53.1 42.4 | 74 | 100 0 | 0 0 | - | - | - | 0.00 | 24.07 | - | - | - |
| Fulton-SE (Barnes Rd) | 4/1/26 | 59.9 8.0 | 1457 | 51.2 1.8 | 0058 | 51.0 2.7 | 86 | 96 1 | 58 3 | 2.2 | 15.3 0.7 | 1732 | 0.09 | 23.56 | - | - | 60 |
| Fulton-SW (Ranch 21) | 4/1/26 | 61.9 6.7 | 1430 | 51.1 1.2 | 0057 | 22.8 30.6 | 62 | 100 6 | 0 57 | 4.0 | 17.2 0.4 | 1743 | 0.14 | 23.96 | 0.085 0.037 | 253 93 | 0 |
| NW Santa Rosa (Piner Road) | 4/1/26 | 60.3 6.7 | 1312 | 50.9 1.9 | 0101 | 52.7 3.1 | 92 | 100 0 | 64 2 | 3.2 | 16.2 0.3 | 1824 | 0.11 | 22.38 | - | - | 30 |
| River Rd South (Denner Ranch) | 4/1/26 | 61.1 6.8 | 1203 | 49.9 2.6 | 0059 | -26.7 13.6 | 24 | 100 0 | 0 0 | 5.3 | 19.7 4.8 | 1732 | - | - | - | - | 70 |
| West Santa Rosa (LOV Vineyard) | 4/1/26 | 60.8 6.2 | 1237 | 51.2 1.9 | 0059 | 50.8 2.9 | 86 | 97 1 | 56 0 | 3.6 | 16.7 0.3 | 1120 | 0.12 | 17.31 | 0.021 0.012 | 0 0 | 50 |
| Guerneville Rd (Prokopakis) | 4/1/26 | 61.9 7.8 | 1231 | 51.4 1.8 | 0059 | 51.5 2.7 | 86 | 98 0 | 55 3 | - | - | - | 0.14 | 23.49 | - | - | 60 |
| Guerneville Rd West (Balletto) | 4/1/26 | 60.8 6.6 | 1232 | 51.4 1.8 | 0058 | 52.2 2.6 | 89 | 99 1 | 63 3 | 4.2 | 15.2 0.8 | 1505 | 0.11 | 22.96 | - | - | 0 |
| Sanchietti Ranch | 4/1/26 | 61.1 7.2 | 1446 | 52.5 1.7 | 0504 | 52.8 2.4 | - | 97 1 | 66 0 | 4.4 | 17.0 0.3 | 1731 | 0.11 | 23.87 | - | - | 0 |
| Occidental Rd (Sebastopol) | 4/1/26 | 60.9 7.9 | 1435 | 51.5 1.8 | 0504 | 55.1 2.1 | 100 | 100 0 | 87 7 | 4.1 | 17.3 0.9 | 1229 | 0.11 | 7.23 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 4/1/26 | 62.1 5.3 | 1231 | 49.0 3.5 | 0059 | 50.9 2.8 | 87 | 100 2 | 56 1 | 2.3 | 16.8 1.2 | 1407 | 0.20 | 28.68 | - | - | 60 |
| Guerneville (Laughlin Rd) | 4/1/26 | 62.0 4.8 | 1151 | 48.5 4.3 | 0059 | 50.7 2.6 | 86 | 97 0 | 57 1 | 2.4 | 16.9 2.2 | 1633 | 0.43 | 39.88 | - | - | 60 |
| Korbel (Winery) | 4/1/26 | 61.8 4.7 | 1156 | 50.0 3.1 | 0101 | 51.5 2.4 | 87 | 97 0 | 57 0 | 0.8 | 15.0 0.7 | 1445 | 0.31 | 37.16 | - | - | 60 |
| Forestville (Shone Farms) | 4/1/26 | 61.1 7.0 | 1439 | 50.2 1.0 | 0032 | 50.8 2.8 | 87 | 98 0 | 61 3 | 3.3 | 18.4 0.9 | 1734 | 0.21 | 30.67 | 0.069 0.019 | 246 81 | 60 |
| Forestville-NE (Ranch 30) | 4/1/26 | 61.6 6.5 | 1415 | 49.1 2.7 | 0101 | 51.4 2.4 | 90 | 99 0 | 64 1 | 3.5 | 17.8 2.3 | 2151 | 0.18 | 28.78 | 0.067 0.018 | 244 76 | 80 |
| Green Valley Vineyard | 4/1/26 | 60.0 4.9 | 1216 | 48.4 3.6 | 0058 | 50.7 2.6 | 87 | 98 0 | 59 2 | 3.8 | 20.0 2.0 | 1100 | 0.37 | 35.58 | 0.025 0.009 | 27 0 | 60 |
| Green Valley (Sanchietti) | 4/1/26 | 63.3 5.9 | 1203 | 52.2 0.9 | 2328 | - | - | - | - | - | - | - | - | - | - | - | 60 |
| Keefer Ranch (Green Valley) | 4/1/26 | 61.5 4.6 | 1240 | 49.7 3.4 | 0059 | 51.6 2.3 | 87 | 97 1 | 63 1 | - | - | - | 0.29 | 31.81 | - | - | 60 |
| Graton-South (Mill Station Rd) | 4/1/26 | 61.4 6.2 | 1216 | 50.3 2.9 | 0059 | 51.6 2.7 | 88 | 98 1 | 59 0 | 1.8 | 11.7 2.1 | 2054 | 0.28 | 28.24 | - | - | 70 |
| Occidental (Horseshoe Bend) | 4/1/26 | 59.4 3.6 | 1224 | 46.5 5.1 | 0059 | 51.0 2.0 | - | 100 0 | 63 6 | - | - | - | 0.38 | 32.81 | - | - | 80 |
| Sexton Valley (Jacqueline's Blk) | 4/1/26 | 59.4 7.6 | 1243 | 50.7 2.6 | 0101 | 52.2 2.5 | 90 | 98 1 | 66 0 | 2.8 | 18.3 6.0 | 2143 | 0.38 | 16.19 | - | - | 70 |
| Sebastopol Hills (Burnside Rd) | 4/1/26 | 58.3 5.8 | 1159 | 49.7 2.2 | 0059 | 51.8 2.4 | 93 | 100 0 | 72 3 | 4.6 | 15.7 1.4 | 1315 | 0.31 | 28.45 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 4/1/26 | 51.2 10.0 | 1350 | 42.6 3.2 | 0054 | 47.7 1.8 | 96 | 97 0 | 90 37 | 2.5 | 14.7 3.1 | 2108 | 0.43 | 49.22 | 0.031 0.014 | 123 63 | 50 |
| Max | 63.3 | - | 52.5 | - | 55.1 | 100 | 100 | 90 | 5.3 | 20.8 | - | 0.43 | 49.22 | 0.085 | 256 | - | |
| Avg | - | - | - | - | 47.1 | 85 | - | - | 3.3 | - | - | - | - | - | - | - | |
| Min | 51.2 | - | 42.6 | - | -26.7 | 24 | 86 | 0 | 0.8 | 11.6 | - | 0.09 | 7.23 | 0.011 | 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 | 4/1/26 | 55.2 10.3 | 1449 | 46.3 3.9 | 0059 | 49.6 1.4 | 98 1 | 67 8 | 2.2 0.0 | 13.8 3.0 | 1228 | WSW | 243 | 0.12 | 5.69 | 0.025 0.017 | 84 65 | 80 10 |
| Lower Bennett Valley | 4/1/26 | 58.5 9.1 | 1412 | 51.2 1.1 | 0059 | 51.4 2.2 | 100 0 | 67 7 | 2.8 0.5 | 14.8 0.4 | 2224 | WSW | 245 | 0.17 | 22.55 | 0.046 0.003 | 154 10 | 60 10 |
| Kenwood (Wildwood) | 4/1/26 | 58.3 8.2 | 1554 | 51.7 1.0 | 0058 | 51.2 1.9 | 100 0 | 67 10 | 2.0 0.3 | 14.0 0.3 | 1425 | NNW | 337 | 0.10 | 27.17 | 0.040 0.007 | 138 21 | 80 10 |
| Sonoma Valley (Bedrock) | 4/1/26 | 58.4 6.3 | 1431 | 50.0 1.7 | 0534 | 49.6 2.2 | 98 2 | 64 4 | - | - | - | - | 0.25 | 23.54 | - | - | 60 10 |
| Sonoma-West (Arnold) | 4/1/26 | 61.0 4.6 | 1442 | 49.8 3.1 | 0535 | 51.6 1.7 | 100 4 | 64 0 | 3.1 0.4 | 17.3 0.0 | 2250 | WNW | 289 | 0.04 | 17.27 | 0.053 0.002 | 186 30 | 60 10 |
| Sonoma Valley HS | 4/1/26 | 59.7 4.6 | 1439 | 51.6 2.0 | 0058 | 53.2 1.9 | 100 0 | 73 2 | 1.5 0.1 | 10.8 3.1 | 2305 | WNW | 286 | 0.12 | 5.46 | 0.037 0.003 | 130 6 | 60 10 |
| Sonoma East (Bundschu01) | 4/1/26 | 59.8 5.5 | 1520 | 50.5 3.0 | 0553 | 51.5 1.9 | 97 2 | 69 3 | 3.0 0.3 | 18.2 2.0 | 1545 | WNW | 290 | 0.21 | 17.73 | 0.040 0.006 | 115 19 | 60 10 |
| Schellville (Sasaki) | 2/4/26 | 70.2 | 1502 | 39.9 | 0001 | 48.4 | 98 | 51 | 2.9 | 11.8 | 1113 | NE | 34 | 0.00 | 0.00 | - | - | 0 |
| Sonoma-SE (Napoli) | 4/1/26 | 60.6 4.5 | 1526 | 50.2 3.9 | 0434 | 51.6 2.0 | 96 2 | 69 2 | 1.1 0.5 | 11.1 1.3 | 2305 | W | 271 | 0.17 | 15.15 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 4/1/26 | 61.4 4.0 | 1533 | 49.5 3.9 | 0431 | 51.6 1.8 | 97 2 | 66 1 | 3.8 0.9 | 16.1 0.9 | 1334 | WNW | 293 | 0.17 | 18.95 | 0.048 0.003 | 143 9 | 30 10 |
| Carneros (Ranch 71) | 4/1/26 | 59.5 5.3 | 1516 | 51.5 2.9 | 0057 | 51.6 1.5 | 100 5 | 71 7 | 4.6 1.9 | 20.2 4.3 | 0034 | W | 267 | 0.18 | 16.44 | 0.045 0.003 | 137 8 | 30 10 |
| Carneros Upper (Ranch 81) | 4/1/26 | 59.8 5.1 | 1533 | 51.8 2.9 | 0053 | 40.4 12.6 | - | - | 7.5 3.3 | 24.0 3.2 | 1346 | W | 262 | - | - | - | - | 60 10 |
| Carneros Lower (Ranch 81) | 4/1/26 | 62.9 3.1 | 1457 | 50.2 3.9 | 0442 | 25.2 29.0 | 100 5 | 0 65 | 0.7 0.5 | 9.8 4.5 | 1045 | SSE | 155 | 0.00 | 16.94 | 0.042 0.004 | 131 13 | 0 0 |
| Rohnert Park-West (Stony Point) | 4/1/26 | 59.4 6.9 | 1439 | 50.8 2.7 | 0525 | 52.0 2.7 | 98 1 | 68 1 | 4.6 2.2 | 18.2 0.2 | 1314 | WNW | 283 | 0.17 | 6.68 | - | - | 0 0 |
| Cartograph Wines Base | 4/1/26 | 59.0 5.7 | 1455 | 51.2 1.6 | 0518 | 52.0 2.4 | 99 1 | 70 2 | 5.4 2.4 | 24.7 1.2 | 2145 | SW | 219 | 0.19 | 22.81 | 0.071 0.021 | 302 120 | 0 0 |
| Cartograph Wines Remote | 4/1/26 | 61.2 6.3 | 1256 | 50.2 2.8 | 0059 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Rice-Spivak Vineyard | 4/1/26 | 62.2 6.2 | 1256 | 48.4 3.7 | 0500 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 4/1/26 | 59.2 7.2 | 1250 | 49.2 4.7 | 0408 | 50.8 2.6 | 98 2 | 63 2 | 3.0 0.2 | 12.5 3.0 | 2239 | WSW | 241 | 0.04 | 45.75 | - | - | 0 0 |
| Petaluma (Ranch 10) | 4/1/26 | 62.0 6.1 | 1506 | 50.0 3.5 | 0435 | 51.3 2.3 | 100 4 | 60 1 | 2.6 1.3 | 13.8 1.4 | 2331 | W | 276 | 0.09 | 15.78 | 0.043 0.001 | 120 8 | 80 10 |
| Max | 62.9 | - | 51.8 | - | 53.2 | 100 | 73 | 7.5 | 24.7 | - | - | 0.25 | 45.75 | 0.071 | 302 | - | |
| Avg | - | - | - | - | 49.0 | - | - | 3.2 | - | - | - | - | - | - | - | - | |
| Min | 55.2 | - | 46.3 | - | 25.2 | 96 | 0 | 0.7 | 9.8 | - | - | 0.00 | 5.46 | 0.025 | 84 | - |