| 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) | 2/27/26 | 80.4 5.6 | 1353 | 55.8 5.5 | 0453 | 51.0 2.4 | 59 | 72 26 | 36 1 | 2.8 | 12.5 5.0 | 0403 | N | 5 | 0.00 | 36.96 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 2/27/26 | 76.6 5.1 | 1424 | 53.4 1.5 | 0459 | 50.1 2.7 | 61 | 74 20 | 38 1 | 8.0 | 32.0 8.6 | 0410 | NNW | 334 | 0.00 | 37.63 | 0.141 0.015 | 398 13 | 0 0 |
| Cloverdale-East (Ranch 83) | 2/27/26 | 83.5 6.6 | 1429 | 54.4 6.7 | 0547 | 53.1 23.4 | - | - | - | 4.5 | 19.4 4.9 | 0243 | N | 11 | 0.00 | 30.99 | 0.111 0.003 | 350 11 | 0 0 |
| Cloverdale-SE (Ranch 38) | 2/27/26 | 82.7 6.3 | 1404 | 54.5 5.2 | 0557 | 53.4 2.7 | 65 | 83 16 | 38 3 | 6.1 | 24.0 7.6 | 0347 | NNW | 333 | 0.00 | 32.45 | 0.118 0.012 | 332 2 | 0 0 |
| Geyserville-North (Hoffman) | 2/25/26 | 68.1 8.7 | 1441 | 50.6 3.7 | 2357 | 56.5 0.4 | 91 | 98 1 | 67 27 | 1.6 | 8.3 5.3 | 0030 | ESE | 121 | 0.00 | 25.50 | 0.048 0.034 | 166 128 | 0 0 |
| Geyserville (Ranch 3) | 2/27/26 | 79.4 2.1 | 1430 | 53.0 5.4 | 0419 | 53.0 1.6 | 67 | 86 14 | 41 8 | 2.1 | 9.2 2.2 | 0532 | WNW | 300 | 0.00 | 31.63 | 0.103 0.000 | 348 27 | 0 0 |
| Geyserville-East (Ranch 40) | 2/27/26 | 83.4 5.7 | 1439 | 52.9 3.5 | 0501 | 54.3 0.5 | 68 | 88 12 | 41 1 | 0.0 | 0.0 0.1 | 0001 | NNW | 341 | 0.00 | 32.10 | 0.097 0.002 | 361 32 | 0 0 |
| Geyserville-South (Nervo Station) | 2/27/26 | 79.5 3.7 | 1452 | 51.9 3.1 | 0622 | - | - | - | - | 1.6 | 9.8 8.7 | 0206 | NNW | 334 | 0.00 | 24.64 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 2/27/26 | 82.4 5.3 | 1446 | 49.2 2.1 | 0417 | 53.2 0.1 | 75 | 100 0 | 32 3 | 1.3 | 7.2 0.2 | 0743 | ESE | 121 | 0.00 | 29.34 | 0.088 0.000 | 309 19 | 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) | 2/27/26 | 83.0 3.7 | 1435 | 48.2 2.4 | 0531 | 54.8 0.5 | 80 | 100 0 | 35 0 | 1.5 | 8.1 0.9 | 0632 | NE | 42 | 0.00 | 28.05 | 0.090 0.000 | 303 22 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 2/27/26 | 79.8 4.5 | 1442 | 45.7 2.0 | 0646 | 52.7 0.7 | 78 | 100 0 | 37 1 | 1.8 | 8.5 0.9 | 1134 | N | 350 | 0.00 | 29.59 | 0.070 0.009 | 195 6 | 0 0 |
| Knights Valley (Bavarian Lion) | 2/27/26 | 80.3 3.8 | 1420 | 46.4 2.9 | 0446 | 52.6 0.2 | 78 | 98 0 | 36 6 | 1.9 | 8.6 0.4 | 1312 | NW | 322 | 0.00 | 27.71 | 0.102 0.004 | 357 18 | - |
| Upper Dry Creek Valley | 2/27/26 | 80.7 1.8 | 1423 | 49.0 0.8 | 0531 | 53.1 0.8 | 71 | 96 3 | 38 3 | 1.9 | 8.1 0.6 | 1549 | SE | 129 | 0.00 | 34.53 | 0.109 0.007 | 364 21 | - |
| Lower Dry Creek Valley | 2/27/26 | 81.8 3.6 | 1408 | 49.6 0.6 | 0438 | 53.8 0.3 | 74 | 100 0 | 35 1 | 0.1 | 8.4 0.5 | 1448 | SE | 125 | 0.00 | 33.46 | 0.093 0.001 | 339 22 | 0 0 |
| Max | 83.5 | - | 55.8 | - | 54.8 | 80 | 100 | 41 | 8.0 | 32.0 | - | - | 0.00 | 37.63 | 0.141 | 398 | - | |
| Avg | - | - | - | - | 52.9 | 71 | - | - | 2.6 | - | - | - | - | - | - | - | - | |
| Min | 76.6 | - | 45.7 | - | 50.1 | 59 | 72 | 32 | 0.0 | 0.0 | - | - | 0.00 | 24.64 | 0.070 | 195 | - |
| 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) | 2/27/26 | 83.8 4.6 | 1400 | 51.1 0.9 | 0711 | 55.0 0.4 | 73 | 84 7 | 41 4 | 1.4 | 7.9 0.2 | 2306 | 0.00 | 29.04 | 0.101 0.002 | 357 18 | 0 |
| Windsor-East (Ranch 16) | 2/27/26 | 80.8 4.6 | 1408 | 51.0 1.1 | 0415 | 53.6 1.5 | 69 | 93 7 | 39 2 | 2.3 | 12.0 2.2 | 0538 | 0.00 | 21.85 | 0.102 0.006 | 344 16 | 0 |
| Mark West-North (Ranch 14) | 2/27/26 | 80.2 5.1 | 1358 | 50.4 1.9 | 0519 | 53.4 1.0 | 73 | 96 3 | 38 5 | 0.9 | 8.6 2.5 | 2259 | 0.00 | 23.66 | 0.012 0.001 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 2/27/26 | 80.1 5.1 | 1434 | 48.2 3.0 | 0518 | 54.2 0.9 | 79 | 99 1 | 39 11 | 1.1 | 7.5 0.0 | 2259 | 0.00 | 21.03 | 0.099 0.003 | 354 22 | 0 |
| Fulton-NW (Ranch 5) | 2/27/26 | 78.0 4.7 | 1431 | 49.1 3.1 | 0524 | 44.9 24.4 | 67 | 100 0 | 3 0 | 1.3 | 7.6 0.4 | 2256 | 0.00 | 23.93 | 0.100 0.004 | 357 3 | 0 |
| 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) | 2/27/26 | 78.6 4.1 | 1408 | 49.7 3.8 | 0455 | 55.2 0.1 | 78 | 96 2 | 42 6 | 1.4 | 8.2 0.3 | 1130 | 0.00 | 22.97 | - | - | - |
| Fulton-SW (Ranch 21) | 2/27/26 | 78.8 5.4 | 1357 | 48.9 3.5 | 0544 | 32.1 29.0 | 59 | 100 0 | 0 0 | 1.5 | 7.0 1.7 | 1335 | 0.00 | 23.41 | 0.106 0.004 | 381 0 | - |
| Santa Rosa-NW (Goldfields) | 2/26/26 | 77.0 11.2 | 1534 | 52.9 0.5 | 0804 | 55.0 2.0 | 85 | 100 0 | 42 32 | 1.9 | 8.6 1.1 | 1142 | 0.01 | 24.82 | 0.083 0.046 | 309 177 | - |
| Goldfields Remote | 2/26/26 | 74.1 8.5 | 1519 | 52.3 1.3 | 2359 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 2/27/26 | 78.1 3.7 | 1434 | 48.6 3.4 | 0430 | 56.6 0.3 | 86 | 100 0 | 46 8 | 1.1 | 7.6 0.1 | 2254 | 0.00 | 21.86 | - | - | 0 |
| River Rd South (Denner Ranch) | 2/27/26 | 79.8 4.5 | 1403 | 48.4 3.3 | 0516 | 55.6 0.3 | 81 | 100 0 | 39 6 | 2.1 | 7.9 0.0 | 1536 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 2/27/26 | 79.3 4.3 | 1401 | 49.2 2.9 | 0413 | 54.4 0.1 | 78 | 100 0 | 37 9 | 1.2 | 7.5 0.5 | 2249 | 0.10 | 16.32 | 0.013 0.002 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 2/27/26 | 79.3 3.6 | 1536 | 50.3 1.8 | 0351 | 55.2 0.4 | 78 | 100 0 | 37 9 | - | - | - | 0.00 | 23.00 | - | - | 0 |
| Guerneville Rd West (Balletto) | 2/27/26 | 78.8 4.7 | 1513 | 49.7 2.7 | 0649 | 56.5 0.8 | 84 | 100 0 | 45 6 | 1.4 | 6.8 1.0 | 2245 | 0.00 | 22.51 | - | - | 0 |
| Sanchietti Ranch | 2/27/26 | 78.2 4.4 | 1404 | 50.4 3.2 | 0605 | 57.4 1.4 | - | 99 1 | 53 9 | 1.6 | 6.4 3.1 | 1524 | 0.00 | 23.44 | - | - | - |
| Occidental Rd (Sebastopol) | 2/27/26 | 77.9 4.2 | 1426 | 48.4 2.9 | 0259 | 61.5 2.9 | 98 | 100 0 | 68 6 | 1.4 | 7.5 0.9 | 1535 | 0.01 | 6.91 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 2/27/26 | 81.9 5.0 | 1324 | 48.9 1.6 | 0454 | 54.7 1.7 | 79 | 100 2 | 33 12 | 0.9 | 7.0 12.7 | 1348 | 0.00 | 28.22 | - | - | 0 |
| Guerneville (Laughlin Rd) | 2/27/26 | 79.7 3.4 | 1240 | 50.0 0.8 | 0710 | 55.6 1.0 | 85 | 98 0 | 38 11 | 0.7 | 6.8 4.1 | 1429 | 0.00 | 39.17 | - | - | - |
| Korbel (Winery) | 2/27/26 | 79.8 5.8 | 1433 | 50.2 1.6 | 0647 | 55.5 0.8 | 85 | 100 0 | 37 12 | 0.8 | 8.5 2.1 | 1456 | 0.02 | 36.43 | - | - | - |
| Forestville (Shone Farms) | 2/27/26 | 80.4 6.2 | 1428 | 49.2 0.8 | 0652 | 54.6 0.4 | 77 | 98 1 | 40 12 | 1.9 | 9.8 1.0 | 1937 | 0.00 | 30.22 | 0.101 0.007 | 338 18 | 0 |
| Forestville-NE (Ranch 30) | 2/27/26 | 80.9 5.6 | 1233 | 48.3 2.9 | 0451 | 55.6 0.1 | 82 | 100 0 | 43 11 | 1.4 | 8.1 0.4 | 1604 | 0.00 | 28.37 | 0.102 0.003 | 350 21 | - |
| Green Valley Vineyard | 2/27/26 | 79.3 5.5 | 1416 | 49.2 3.2 | 0647 | 54.2 0.2 | 79 | 98 1 | 35 9 | 2.1 | 8.1 1.1 | 1515 | 0.00 | 34.96 | 0.078 0.003 | 242 21 | - |
| Green Valley (Sanchietti) | 2/27/26 | 82.2 4.6 | 1402 | 48.8 4.2 | 0649 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 2/27/26 | 77.6 3.8 | 1354 | 48.0 3.9 | 0436 | 54.9 0.3 | 84 | 99 0 | 44 7 | - | - | - | 0.00 | 31.23 | - | - | - |
| Graton-South (Mill Station Rd) | 2/27/26 | 79.7 5.4 | 1410 | 47.7 3.3 | 0538 | 54.3 2.9 | 81 | 100 2 | 38 36 | 0.1 | 5.5 0.3 | 1455 | 0.00 | 27.56 | - | - | 0 |
| Occidental (Horseshoe Bend) | 2/27/26 | 76.7 4.1 | 1323 | 53.5 4.0 | 0600 | 53.6 0.6 | - | 84 16 | 47 9 | - | - | - | 0.01 | 16.35 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 2/27/26 | 80.6 7.2 | 1418 | 47.6 2.0 | 0417 | 55.2 0.6 | 84 | 100 0 | 38 15 | 1.0 | 8.5 1.2 | 1454 | 0.00 | 15.24 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 2/27/26 | 77.9 6.1 | 1415 | 52.6 0.6 | 0423 | 55.5 0.5 | 75 | 90 10 | 47 9 | 1.1 | 7.8 3.4 | 1424 | 0.00 | 27.82 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 2/27/26 | 73.2 4.2 | 1331 | 56.0 2.4 | 0514 | 52.0 7.3 | 63 | 77 15 | 49 38 | 2.6 | 10.5 2.1 | 0550 | 0.00 | 48.28 | 0.109 0.001 | 374 28 | - |
| Max | 83.8 | - | 56.0 | - | 61.5 | 98 | 100 | 68 | 2.6 | 12.0 | - | 0.10 | 48.28 | 0.109 | 381 | - | |
| Avg | - | - | - | - | 53.9 | 78 | - | - | 1.4 | - | - | - | - | - | - | - | |
| Min | 73.2 | - | 47.6 | - | 32.1 | 59 | 77 | 0 | 0.1 | 5.5 | - | 0.00 | 6.91 | 0.012 | 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 | 2/27/26 | 76.1 4.8 | 1403 | 54.3 3.9 | 0321 | 53.6 0.1 | 88 10 | 45 1 | 2.5 0.3 | 9.3 3.8 | 2037 | NNE | 22 | 0.00 | 5.41 | 0.109 0.008 | 368 25 | - |
| Lower Bennett Valley | 2/27/26 | 77.9 4.6 | 1439 | 47.8 0.7 | 0423 | 54.8 0.8 | 100 0 | 43 5 | 2.1 0.4 | 9.4 2.4 | 1146 | NNW | 333 | 0.00 | 22.00 | 0.103 0.007 | 360 22 | 0 0 |
| Kenwood (Wildwood) | 2/27/26 | 79.3 4.4 | 1316 | 49.3 2.3 | 0439 | 55.8 1.6 | 100 0 | 44 9 | 2.0 0.8 | 8.2 1.7 | 1052 | S | 186 | 0.00 | 26.86 | 0.100 0.012 | 351 21 | - |
| Sonoma Valley (Bedrock) | 2/27/26 | 79.4 5.4 | 1402 | 48.6 2.1 | 0248 | 54.1 1.3 | 98 1 | 42 11 | - | - | - | - | 0.00 | 23.06 | - | - | - |
| Sonoma-West (Arnold) | 2/27/26 | 79.4 2.7 | 1346 | 48.2 0.4 | 0249 | 55.6 2.0 | 100 0 | 49 2 | 1.8 0.1 | 9.3 0.4 | 1419 | SSW | 194 | 0.01 | 17.15 | 0.122 0.021 | 426 67 | - |
| Sonoma Valley HS | 2/27/26 | 77.0 3.3 | 1437 | 50.2 1.3 | 0354 | 57.5 2.1 | 100 0 | 57 0 | 1.2 0.1 | 8.1 2.5 | 1446 | SW | 232 | 0.00 | 5.28 | 0.104 0.017 | 379 50 | - |
| Sonoma East (Bundschu01) | 2/27/26 | 77.0 1.4 | 1433 | 48.7 2.3 | 0450 | 55.2 1.0 | 98 0 | 50 4 | 1.9 0.1 | 8.1 0.7 | 1357 | S | 188 | 0.00 | 17.46 | 0.110 0.016 | 393 51 | - |
| 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) | 2/27/26 | 80.3 2.1 | 1413 | 49.0 1.7 | 0515 | 55.1 1.5 | 96 0 | 45 4 | 0.8 0.1 | 8.4 0.7 | 1345 | SSW | 193 | 0.00 | 14.94 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 2/27/26 | 77.6 2.7 | 1606 | 49.4 2.5 | 0434 | 55.1 1.7 | 97 1 | 46 4 | 2.3 0.2 | 8.6 0.1 | 1222 | SSW | 201 | 0.00 | 18.75 | 0.115 0.017 | 406 56 | - |
| Carneros (Ranch 71) | 2/27/26 | 75.9 1.8 | 1425 | 54.7 2.0 | 0053 | 56.0 1.3 | 92 8 | 50 3 | 2.2 0.3 | 7.7 2.0 | 1235 | W | 270 | 0.00 | 16.20 | 0.109 0.020 | 388 66 | 0 0 |
| Carneros Upper (Ranch 81) | 2/27/26 | 76.8 2.8 | 1442 | 55.1 1.0 | 0723 | 55.0 31.8 | - | - | 2.7 0.7 | 8.1 8.9 | 1348 | SSW | 196 | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 2/27/26 | 80.4 3.9 | 1336 | 51.6 0.8 | 0501 | 55.4 50.4 | 100 0 | 0 0 | 1.3 0.2 | 7.0 0.7 | 1050 | SSE | 163 | 0.00 | 16.94 | 0.087 0.014 | 298 77 | 0 0 |
| Rohnert Park-West (Stony Point) | 2/27/26 | 77.9 4.2 | 1449 | 47.9 2.8 | 0403 | 55.7 1.1 | 100 0 | 54 8 | 0.8 0.6 | 8.1 2.4 | 1535 | SW | 230 | 0.00 | 6.28 | - | - | - |
| Cartograph Wines Base | 2/27/26 | 76.6 4.4 | 1404 | 51.4 0.6 | 0420 | 57.0 1.9 | 96 4 | 58 3 | 1.7 0.5 | 9.6 5.3 | 1522 | SW | 230 | 0.00 | 22.36 | 0.098 0.024 | 363 71 | - |
| Cartograph Wines Remote | 2/27/26 | 75.9 6.5 | 1308 | 47.4 3.0 | 0423 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 2/27/26 | 79.8 5.8 | 1357 | 44.2 2.6 | 0354 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 2/27/26 | 80.1 6.0 | 1345 | 48.2 3.2 | 0429 | 55.1 1.4 | 98 1 | 46 10 | 1.4 0.1 | 8.6 0.1 | 0533 | WNW | 298 | 0.00 | 36.04 | - | - | 0 0 |
| Petaluma (Ranch 10) | 2/27/26 | 81.6 4.5 | 1438 | 49.3 1.0 | 0439 | 54.8 2.3 | 100 0 | 40 3 | 0.8 0.3 | 5.9 3.3 | 1315 | NNE | 23 | 0.00 | 15.67 | 0.098 0.015 | 339 47 | 0 0 |
| Max | 81.6 | - | 55.1 | - | 57.5 | 100 | 58 | 2.7 | 9.6 | - | - | 0.01 | 36.04 | 0.122 | 426 | - | |
| Avg | - | - | - | - | 55.4 | - | - | 1.7 | - | - | - | - | - | - | - | - | |
| Min | 75.9 | - | 44.2 | - | 53.6 | 88 | 0 | 0.8 | 5.9 | - | - | 0.00 | 5.28 | 0.087 | 298 | - |