| 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) | 2/21/26 | 50.0 2.2 | 1307 | 37.1 4.9 | 0542 | 36.8 6.1 | 75 | 86 3 | 58 24 | 4.7 | 20.8 10.6 | 1247 | SE | 136 | 0.00 | 33.60 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 2/21/26 | 46.5 3.6 | 1311 | 34.5 3.7 | 0556 | 35.5 5.9 | 81 | 92 2 | 63 21 | 13.9 | 43.8 22.1 | 1548 | SE | 144 | 0.00 | 34.32 | 0.045 0.020 | 133 173 | 0 0 |
| Cloverdale-East (Ranch 83) | 2/21/26 | 56.3 1.6 | 1256 | 31.4 0.6 | 0044 | 16.8 15.4 | - | - | - | 5.2 | 23.6 9.5 | 1334 | SSE | 163 | 0.00 | 28.74 | 0.070 0.008 | 191 80 | 0 0 |
| Cloverdale-SE (Ranch 38) | 2/21/26 | 54.4 0.1 | 1427 | 35.2 1.7 | 0535 | 38.7 5.6 | 76 | 94 4 | 56 16 | 8.2 | 28.4 11.5 | 1415 | NNW | 334 | 0.00 | 30.28 | 0.069 0.008 | 192 69 | 0 0 |
| Geyserville-North (Hoffman) | 2/21/26 | 57.3 2.4 | 1422 | 31.3 0.0 | 0019 | 37.8 4.5 | 76 | 96 2 | 52 14 | 4.4 | 21.1 9.1 | 1441 | S | 174 | 0.00 | 25.50 | 0.062 0.001 | 161 102 | 0 0 |
| Geyserville (Ranch 3) | 2/21/26 | 57.0 2.3 | 1424 | 33.0 1.3 | 0029 | 38.0 4.3 | 77 | 100 0 | 47 14 | 4.1 | 20.2 9.2 | 1427 | ESE | 116 | 0.00 | 29.64 | 0.064 0.001 | 181 108 | 0 0 |
| Geyserville-East (Ranch 40) | 2/21/26 | 55.2 0.8 | 1528 | 36.2 3.0 | 0101 | 38.2 4.6 | 73 | 92 0 | 56 11 | 11.2 | 34.4 16.0 | 1550 | S | 172 | 0.00 | 30.28 | 0.075 0.005 | 201 107 | 0 0 |
| Geyserville-South (Nervo Station) | 2/21/26 | 57.8 3.6 | 1532 | 34.0 1.9 | 0513 | - | - | - | - | 4.2 | 19.9 4.0 | 1441 | ESE | 116 | 0.00 | 22.99 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 2/21/26 | 58.3 2.9 | 1430 | 31.7 3.2 | 0342 | 36.8 4.4 | 73 | 100 0 | 43 6 | 2.9 | 19.8 9.7 | 1332 | S | 191 | 0.00 | 27.45 | 0.064 0.008 | 206 49 | 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) | 2/21/26 | 60.2 4.0 | 1502 | 31.4 3.0 | 0453 | 37.0 3.5 | 71 | 100 2 | 44 4 | 3.4 | 18.5 8.9 | 1406 | S | 190 | 0.00 | 26.41 | 0.068 0.015 | 217 19 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 2/21/26 | 58.4 3.5 | 1438 | 30.4 2.6 | 0352 | 36.4 3.7 | 73 | 100 0 | 44 2 | 4.7 | 18.7 9.2 | 1400 | SSE | 154 | 0.00 | 27.76 | 0.072 0.018 | 201 41 | 0 0 |
| Knights Valley (Bavarian Lion) | 2/21/26 | 56.0 0.8 | 1405 | 28.8 3.5 | 0207 | 35.5 4.3 | 73 | 97 0 | 44 9 | 4.6 | 16.6 7.9 | 1410 | S | 174 | 0.00 | 26.29 | 0.077 0.020 | 261 15 | - |
| Upper Dry Creek Valley | 2/20/26 | 54.5 2.3 | 1527 | 31.4 3.8 | 0700 | 33.2 1.8 | 78 | 97 0 | 35 9 | 1.7 | 11.1 13.3 | 1432 | SE | 135 | 0.00 | 32.03 | 0.066 | 296 | - |
| Lower Dry Creek Valley | 2/21/26 | 57.3 1.3 | 1415 | 32.4 2.1 | 0055 | 38.2 4.1 | 78 | 100 0 | 48 13 | 4.2 | 21.3 10.5 | 1429 | ESE | 120 | 0.00 | 31.48 | 0.065 0.003 | 189 81 | 0 0 |
| Max | 60.2 | - | 37.1 | - | 38.7 | 81 | 100 | 63 | 13.9 | 43.8 | - | - | 0.00 | 34.32 | 0.077 | 261 | - | |
| Avg | - | - | - | - | 35.5 | 75 | - | - | 5.8 | - | - | - | - | - | - | - | - | |
| Min | 46.5 | - | 28.8 | - | 16.8 | 71 | 86 | 43 | 2.9 | 16.6 | - | - | 0.00 | 22.99 | 0.045 | 133 | - |
| 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) | 2/11/26 | 61.5 0.6 | 1136 | 49.6 13.4 | 0010 | - | - | 95 5 | 60 9 | 3.9 | 21.6 12.3 | 0227 | 0.18 | 19.98 | - | - | 0 |
| Windsor-NW (Ranch 8) | 2/21/26 | 59.2 1.6 | 1516 | 34.0 3.3 | 0523 | 39.4 4.2 | 77 | 90 0 | 55 8 | 2.4 | 17.0 7.5 | 1353 | 0.00 | 27.33 | 0.061 0.007 | 238 19 | 0 |
| Windsor-East (Ranch 16) | 2/21/26 | 59.2 3.1 | 1425 | 31.5 0.8 | 0341 | 37.5 3.8 | 74 | 100 0 | 45 2 | 4.4 | 20.7 10.3 | 1322 | 0.00 | 20.46 | 0.079 0.024 | 253 9 | 0 |
| Mark West-North (Ranch 14) | 2/21/26 | 59.8 3.4 | 1431 | 32.0 2.3 | 0356 | 37.4 4.0 | 74 | 97 0 | 43 1 | 2.6 | 14.7 6.6 | 1601 | 0.00 | 22.23 | 0.026 0.017 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 2/21/26 | 58.6 2.7 | 1504 | 31.8 3.4 | 0401 | 38.2 4.9 | 78 | 99 1 | 47 6 | 2.7 | 17.2 8.6 | 1548 | 0.00 | 19.33 | 0.064 0.010 | 227 34 | 0 |
| Fulton-NW (Ranch 5) | 2/21/26 | 59.4 5.2 | 1426 | 31.8 3.3 | 0327 | 31.1 2.2 | 68 | 100 0 | 3 0 | 4.0 | 17.0 8.4 | 1612 | 0.00 | 22.50 | 0.075 0.020 | 259 9 | 0 |
| Windsor-South (Laughlin Rd) | 2/21/26 | 59.0 4.0 | 1408 | 32.5 2.8 | 0347 | 38.2 4.2 | 76 | 100 6 | 48 5 | - | - | - | 0.00 | 22.53 | - | - | - |
| Fulton-SE (Barnes Rd) | 2/21/26 | 58.4 3.2 | 1420 | 32.0 2.7 | 0347 | 38.2 3.9 | 75 | 97 1 | 49 6 | 2.1 | 15.8 6.8 | 1341 | 0.00 | 21.52 | - | - | - |
| Fulton-SW (Ranch 21) | 2/21/26 | 58.8 4.6 | 1418 | 31.9 3.1 | 0343 | 13.9 12.6 | 56 | 100 0 | 0 0 | 4.2 | 20.3 12.4 | 1304 | 0.00 | 22.04 | 0.076 0.017 | 270 22 | - |
| Santa Rosa-NW (Goldfields) | 2/21/26 | 59.8 3.3 | 1431 | 32.5 3.6 | 0417 | 38.6 4.6 | 77 | 100 0 | 46 5 | 4.6 | 20.0 11.6 | 1553 | 0.00 | 23.32 | 0.070 0.020 | 214 19 | - |
| Goldfields Remote | 2/21/26 | 59.3 4.4 | 1407 | 31.4 3.1 | 0350 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 2/21/26 | 58.3 4.0 | 1424 | 31.3 2.9 | 0332 | 39.8 4.3 | 82 | 100 0 | 54 3 | 3.2 | 15.9 6.4 | 1610 | 0.00 | 20.50 | - | - | 0 |
| River Rd South (Denner Ranch) | 2/21/26 | 58.6 2.3 | 1505 | 31.5 2.8 | 0353 | 39.0 3.8 | 81 | 100 0 | 49 4 | 5.5 | 31.8 21.5 | 1459 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 2/21/26 | 59.5 3.4 | 1455 | 31.9 2.8 | 0350 | 38.2 4.4 | 77 | 100 2 | 45 1 | 2.0 | 18.2 8.7 | 1525 | 0.01 | 15.85 | 0.020 0.012 | 1 0 | 0 |
| Guerneville Rd (Prokopakis) | 2/21/26 | 58.6 3.3 | 1457 | 33.1 2.5 | 0420 | 39.0 3.8 | 78 | 100 1 | 48 2 | - | - | - | 0.00 | 21.50 | - | - | 0 |
| Guerneville Rd West (Balletto) | 2/21/26 | 58.9 4.2 | 1454 | 31.7 2.7 | 0404 | 39.8 4.7 | 82 | 100 0 | 54 2 | 4.3 | 23.4 13.9 | 1536 | 0.00 | 21.18 | - | - | 0 |
| Sanchietti Ranch | 2/21/26 | 59.4 4.3 | 1523 | 33.4 2.5 | 0345 | 41.2 4.7 | - | 99 0 | 57 4 | 4.7 | 21.3 11.6 | 1548 | 0.00 | 22.24 | - | - | - |
| Occidental Rd (Sebastopol) | 2/21/26 | 60.8 5.3 | 1449 | 31.9 2.1 | 0407 | 44.5 5.4 | 97 | 100 0 | 69 2 | 2.8 | 21.9 12.7 | 1528 | 0.01 | 6.88 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 2/21/26 | 59.2 0.8 | 1516 | 33.7 3.3 | 0342 | 38.2 4.3 | 75 | 97 3 | 44 4 | 0.0 | 0.1 0.1 | 1515 | 0.00 | 26.48 | - | - | 0 |
| Guerneville (Laughlin Rd) | 2/21/26 | 56.4 0.4 | 1302 | 34.4 3.6 | 0403 | 39.8 4.7 | 82 | 98 0 | 51 10 | 1.7 | 18.0 10.1 | 1714 | 0.00 | 35.88 | - | - | - |
| Korbel (Winery) | 2/21/26 | 56.8 1.6 | 1450 | 35.7 3.9 | 0532 | 40.0 3.9 | 80 | 100 0 | 51 5 | 2.9 | 16.9 8.8 | 1438 | 0.00 | 33.48 | - | - | - |
| Forestville (Shone Farms) | 2/21/26 | 58.5 2.8 | 1512 | 30.9 1.9 | 0334 | 38.5 4.4 | 78 | 98 1 | 50 8 | 3.0 | 20.6 12.3 | 1703 | 0.00 | 28.38 | 0.060 0.007 | 197 56 | 0 |
| Forestville-NE (Ranch 30) | 2/21/26 | 57.6 2.5 | 1358 | 32.4 3.5 | 0507 | 39.8 4.4 | 83 | 100 0 | 57 6 | 4.1 | 22.0 11.3 | 1615 | 0.00 | 26.63 | 0.060 0.006 | 200 65 | - |
| Green Valley Vineyard | 2/21/26 | 58.9 5.0 | 1356 | 32.8 3.2 | 0433 | 38.9 4.7 | 80 | 98 0 | 50 0 | 2.8 | 20.0 13.4 | 1608 | 0.00 | 32.69 | 0.102 0.076 | 419 312 | - |
| Green Valley (Sanchietti) | 2/21/26 | 60.1 2.9 | 1352 | 31.4 2.1 | 0353 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 2/21/26 | 60.0 5.4 | 1356 | 30.8 2.4 | 0334 | 39.4 5.0 | 82 | 99 1 | 54 2 | - | - | - | 0.00 | 29.21 | - | - | - |
| Graton-South (Mill Station Rd) | 2/21/26 | 59.1 3.8 | 1503 | 30.1 1.8 | 0351 | 38.0 4.2 | 80 | 99 0 | 48 7 | 1.7 | 12.3 4.4 | 1554 | 0.00 | 26.74 | - | - | 0 |
| Occidental (Horseshoe Bend) | 2/21/26 | 55.8 2.0 | 1303 | 39.7 6.4 | 0528 | 39.6 5.9 | - | 86 6 | 55 7 | - | - | - | 0.02 | 16.29 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 2/21/26 | 58.8 3.3 | 1353 | 30.1 1.7 | 0407 | 39.1 4.7 | 82 | 99 0 | 53 4 | 2.1 | 15.4 7.2 | 1516 | 0.01 | 12.86 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 2/21/26 | 56.2 2.4 | 1352 | 36.1 3.2 | 0551 | 40.7 4.9 | 82 | 97 1 | 57 5 | 1.9 | 21.9 13.0 | 1457 | 0.00 | 25.91 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 2/21/26 | 48.0 2.2 | 1302 | 37.5 3.6 | 0313 | 39.2 7.3 | 85 | 92 3 | 73 20 | 7.2 | 25.2 11.8 | 2128 | 0.00 | 42.83 | 0.037 0.019 | 141 139 | - |
| Max | 60.8 | - | 39.7 | - | 44.5 | 97 | 100 | 73 | 7.2 | 31.8 | - | 0.02 | 42.83 | 0.102 | 419 | - | |
| Avg | - | - | - | - | 38.0 | 79 | - | - | 3.2 | - | - | - | - | - | - | - | |
| Min | 48.0 | - | 30.1 | - | 13.9 | 56 | 86 | 0 | 0.0 | 0.1 | - | 0.00 | 6.88 | 0.020 | 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 | 2/21/26 | 54.5 2.7 | 1452 | 35.4 4.2 | 0344 | 35.6 4.0 | 87 7 | 46 7 | 3.6 1.6 | 17.9 8.9 | 2335 | SSE | 159 | 0.00 | 5.41 | 0.066 0.011 | 249 26 | - |
| Lower Bennett Valley | 2/21/26 | 56.5 1.8 | 1247 | 29.6 3.3 | 0103 | 37.8 5.4 | 100 0 | 50 13 | 4.3 2.6 | 15.9 5.7 | 1247 | SSE | 166 | 0.00 | 20.88 | 0.067 0.011 | 235 34 | 0 0 |
| Kenwood (Wildwood) | 2/21/26 | 58.0 4.9 | 1502 | 31.2 2.6 | 0218 | 37.7 4.5 | 100 0 | 48 4 | 2.9 0.4 | 15.7 6.1 | 1216 | SW | 223 | 0.00 | 25.94 | 0.071 0.018 | 288 46 | - |
| Sonoma Valley (Bedrock) | 2/21/26 | 58.8 4.8 | 1501 | 29.3 0.3 | 0528 | 35.7 3.3 | 98 2 | 45 4 | - | - | - | - | 0.00 | 22.35 | - | - | - |
| Sonoma-West (Arnold) | 2/21/26 | 60.7 4.1 | 1502 | 31.6 1.1 | 0433 | 37.9 3.6 | 100 5 | 46 2 | 2.2 0.3 | 16.3 8.1 | 1716 | SSW | 203 | 0.05 | 16.99 | 0.081 0.007 | 344 4 | - |
| Sonoma Valley HS | 2/21/26 | 59.1 4.9 | 1455 | 31.6 2.1 | 0442 | 39.3 3.4 | 100 0 | 54 1 | 1.6 0.4 | 13.1 4.8 | 1314 | ESE | 118 | 0.01 | 5.23 | 0.070 0.009 | 310 2 | - |
| Sonoma East (Bundschu01) | 2/21/26 | 59.4 4.8 | 1526 | 31.8 3.4 | 0143 | 37.2 3.8 | 96 1 | 47 1 | 3.0 0.9 | 16.0 5.0 | 1223 | SE | 132 | 0.00 | 16.89 | 0.082 0.016 | 345 27 | - |
| 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) | 2/21/26 | 60.4 0.0 | 1523 | 32.2 2.7 | 0555 | 37.5 3.9 | 96 0 | 45 4 | 2.4 0.8 | 13.5 4.4 | 1332 | SSW | 195 | 0.00 | 14.62 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 2/21/26 | 60.1 3.9 | 1453 | 32.7 1.9 | 0543 | 38.0 3.3 | 97 1 | 45 0 | 3.5 0.6 | 14.1 3.9 | 1252 | SE | 144 | 0.00 | 18.42 | 0.084 0.010 | 358 9 | - |
| Carneros (Ranch 71) | 2/21/26 | 58.6 5.1 | 1529 | 36.2 2.8 | 0417 | 38.6 3.6 | 91 2 | 48 2 | 3.9 0.9 | 13.2 1.4 | 1042 | E | 94 | 0.00 | 15.82 | 0.076 0.012 | 324 11 | 0 0 |
| Carneros Upper (Ranch 81) | 2/21/26 | 59.8 2.9 | 1256 | 37.6 4.5 | 0730 | 38.0 3.6 | - | - | 6.0 2.8 | 18.0 4.8 | 1738 | SW | 218 | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 2/21/26 | 59.7 5.4 | 1458 | 33.8 3.9 | 0307 | 38.6 4.1 | 100 0 | 47 47 | 1.7 0.4 | 12.9 4.4 | 1323 | SSE | 162 | 0.00 | 16.55 | 0.064 0.013 | 261 35 | 0 0 |
| Rohnert Park-West (Stony Point) | 2/21/26 | 58.4 3.2 | 1521 | 31.5 2.1 | 0407 | 39.4 4.6 | 99 2 | 56 6 | 4.1 3.0 | 20.5 6.7 | 1518 | S | 174 | 0.00 | 5.16 | - | - | - |
| Cartograph Wines Base | 2/21/26 | 58.7 3.8 | 1503 | 34.4 0.1 | 0452 | 41.3 4.1 | 100 6 | 56 3 | 4.5 2.3 | 24.6 13.8 | 1520 | SSE | 149 | 0.00 | 21.41 | 0.065 0.002 | 276 46 | - |
| Cartograph Wines Remote | 2/21/26 | 58.5 3.3 | 1313 | 31.4 2.0 | 0318 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 2/21/26 | 61.2 3.7 | 1430 | 28.1 2.8 | 0352 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 2/21/26 | 58.1 3.9 | 1441 | 33.7 0.8 | 0541 | 38.5 4.2 | 96 3 | 46 4 | 6.7 3.6 | 17.9 2.3 | 2330 | E | 81 | 3.75 | 29.13 | - | - | 0 0 |
| Petaluma (Ranch 10) | 2/21/26 | 60.7 3.0 | 1430 | 35.5 6.4 | 0001 | 40.0 5.5 | 95 5 | 46 3 | 2.6 1.6 | 9.1 2.8 | 1436 | ESE | 120 | 0.00 | 15.20 | 0.067 0.004 | 268 21 | 0 0 |
| Max | 61.2 | - | 37.6 | - | 41.3 | 100 | 56 | 6.7 | 24.6 | - | - | 3.75 | 29.13 | 0.084 | 358 | - | |
| Avg | - | - | - | - | 38.2 | - | - | 3.5 | - | - | - | - | - | - | - | - | |
| Min | 54.5 | - | 28.1 | - | 35.6 | 87 | 45 | 1.6 | 9.1 | - | - | 0.00 | 5.16 | 0.064 | 235 | - |