| 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) | 1/15/26 | 76.4 4.9 | 1447 | 51.0 3.2 | 0243 | 34.5 4.1 | 35 | 72 1 | 20 12 | 1.8 | 7.4 0.0 | 2325 | N | 349 | 0.00 | 28.82 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 1/15/26 | 74.7 0.6 | 1524 | 59.1 4.5 | 0248 | 27.7 3.8 | 24 | 45 7 | 15 4 | 4.3 | 12.7 5.3 | 1835 | E | 100 | 0.00 | 29.56 | 0.122 0.009 | 302 3 | 0 0 |
| Cloverdale-East (Ranch 83) | 1/15/26 | 76.7 2.1 | 1417 | 32.3 2.7 | 0323 | 23.5 13.7 | - | - | - | 2.5 | 17.0 3.8 | 0924 | NNW | 344 | 0.00 | 25.01 | 0.064 0.008 | 251 3 | 0 0 |
| Cloverdale-SE (Ranch 38) | 1/15/26 | 77.4 3.8 | 1435 | 41.7 1.8 | 0333 | 44.3 3.3 | 66 | 94 10 | 30 4 | 4.8 | 23.0 0.6 | 0621 | NNW | 344 | 0.00 | 26.49 | 0.073 0.002 | 253 2 | 0 0 |
| Geyserville-North (Hoffman) | 1/15/26 | 72.2 3.4 | 1428 | 31.8 1.4 | 0745 | 41.6 1.7 | 84 | 97 0 | 46 0 | 1.6 | 7.2 0.2 | 1044 | SE | 132 | 0.00 | 25.50 | 0.058 0.001 | 242 1 | 0 0 |
| Geyserville (Ranch 3) | 1/15/26 | 71.0 4.1 | 1430 | 32.5 1.2 | 0737 | 42.1 1.8 | 87 | 100 0 | 43 2 | 1.5 | 7.8 1.5 | 1035 | ESE | 121 | 0.00 | 25.44 | 0.055 0.001 | 244 2 | 0 0 |
| Geyserville-East (Ranch 40) | 1/15/26 | 75.4 6.1 | 1406 | 41.3 0.2 | 0718 | 46.1 2.4 | 73 | 94 6 | 38 8 | 3.0 | 10.6 1.2 | 0625 | NNW | 348 | 0.00 | 25.86 | 0.068 0.002 | 272 4 | 0 0 |
| Geyserville-South (Nervo Station) | 1/15/26 | 69.6 1.0 | 1405 | 35.2 2.0 | 0656 | - | - | - | - | 1.3 | 8.4 2.3 | 1034 | E | 86 | 0.01 | 19.36 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 1/15/26 | 74.0 1.8 | 1442 | 31.8 1.9 | 0715 | 40.2 1.8 | 85 | 100 0 | 33 2 | 0.9 | 5.0 0.4 | 1458 | SSW | 204 | 0.00 | 23.62 | 0.047 0.001 | 222 1 | 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) | 1/15/26 | 73.1 1.1 | 1421 | 31.3 1.1 | 0643 | 39.7 1.3 | 85 | 100 0 | 37 0 | 1.0 | 11.0 6.7 | 1233 | W | 268 | 0.00 | 22.79 | 0.054 0.004 | 228 1 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 1/15/26 | 70.1 1.7 | 1454 | 31.8 2.1 | 0744 | 40.1 1.7 | 86 | 100 0 | 42 1 | 1.0 | 6.6 0.5 | 1505 | SSE | 160 | 0.00 | 24.15 | 0.052 0.004 | 228 4 | - |
| Knights Valley (Bavarian Lion) | 1/15/26 | 78.7 9.5 | 1401 | 32.8 3.2 | 0104 | 40.6 2.7 | 82 | 99 0 | 18 20 | 2.0 | 10.3 3.6 | 2346 | NE | 49 | 0.01 | 22.63 | 0.060 0.005 | 251 3 | - |
| Upper Dry Creek Valley | 1/15/26 | 71.3 3.0 | 1426 | 33.2 0.4 | 0707 | 41.8 1.2 | 84 | 98 0 | 42 3 | 1.3 | 7.1 0.9 | 1057 | ESE | 111 | 0.00 | 27.46 | 0.064 0.002 | 269 1 | - |
| Lower Dry Creek Valley | 1/15/26 | 72.0 1.9 | 1339 | 32.9 1.4 | 0703 | 41.6 1.2 | 87 | 100 0 | 38 1 | 1.4 | 9.4 1.4 | 1506 | SE | 145 | 0.00 | 27.06 | 0.055 0.000 | 244 2 | 0 0 |
| Max | 78.7 | - | 59.1 | - | 46.1 | 87 | 100 | 46 | 4.8 | 23.0 | - | - | 0.01 | 29.56 | 0.122 | 302 | - | |
| Avg | - | - | - | - | 38.8 | 73 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 69.6 | - | 31.3 | - | 23.5 | 24 | 45 | 15 | 0.9 | 5.0 | - | - | 0.00 | 19.36 | 0.047 | 222 | - |
| 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) | 1/15/26 | 69.3 2.2 | 1322 | 33.6 1.1 | 0746 | - | - | 100 0 | 47 9 | 0.5 | 7.1 1.7 | 1423 | 0.00 | 19.43 | - | - | 0 |
| Windsor-NW (Ranch 8) | 1/15/26 | 71.0 1.2 | 1239 | 35.1 0.2 | 0728 | 43.5 1.5 | 82 | 92 2 | 49 4 | 0.5 | 5.5 0.4 | 1506 | 0.00 | 23.45 | 0.056 0.001 | 248 1 | - |
| Windsor-East (Ranch 16) | 1/15/26 | 67.7 3.6 | 1514 | 31.8 0.7 | 0709 | 41.8 2.0 | 87 | 100 0 | 49 14 | 0.8 | 8.5 3.9 | 1324 | 0.00 | 17.32 | 0.056 0.000 | 252 0 | 0 |
| Mark West-North (Ranch 14) | 1/15/26 | 67.0 3.2 | 1512 | 33.1 1.1 | 0555 | 41.6 2.2 | 85 | 98 0 | 50 15 | 0.6 | 6.7 2.1 | 1356 | 0.00 | 18.96 | 0.007 0.001 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 1/15/26 | 66.4 2.7 | 1542 | 32.2 1.3 | 0728 | 40.9 2.4 | 89 | 100 0 | 59 21 | 0.9 | 7.3 1.8 | 1343 | 0.00 | 15.29 | 0.055 0.001 | 258 4 | 0 |
| Fulton-NW (Ranch 5) | 1/15/26 | 64.9 1.2 | 1520 | 31.8 1.2 | 0451 | 17.3 2.8 | 57 | 100 0 | 3 0 | 0.9 | 6.4 1.5 | 1236 | 0.00 | 18.91 | 0.054 0.001 | 246 0 | 0 |
| Windsor-South (Laughlin Rd) | 1/15/26 | 68.9 1.2 | 1527 | 33.2 1.5 | 0646 | 9.9 2.8 | 55 | 100 0 | 0 0 | - | - | - | 0.01 | 18.81 | - | - | - |
| Fulton-SE (Barnes Rd) | 1/15/26 | 66.4 0.5 | 1558 | 32.8 0.9 | 0704 | 42.1 1.6 | 87 | 98 0 | 60 16 | 0.3 | 7.7 1.8 | 1218 | 0.00 | 18.16 | - | - | - |
| Fulton-SW (Ranch 21) | 1/15/26 | 64.2 2.4 | 1517 | 32.9 1.5 | 0451 | -10.7 7.3 | 40 | 100 0 | 0 0 | 1.5 | 6.9 1.2 | 1440 | 0.00 | 18.43 | 0.062 0.003 | 282 0 | - |
| Santa Rosa-NW (Goldfields) | 1/15/26 | 67.8 1.4 | 1435 | 33.4 1.5 | 0711 | 44.0 3.6 | 90 | 100 0 | 57 20 | 1.1 | 6.6 0.9 | 1240 | 0.00 | 19.41 | 0.046 0.007 | 219 18 | - |
| Goldfields Remote | 1/15/26 | 65.2 1.8 | 1438 | 33.4 2.0 | 0739 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 1/15/26 | 65.5 1.8 | 1544 | 33.3 2.4 | 0749 | 42.9 2.2 | 94 | 100 0 | 67 20 | 0.8 | 6.7 2.3 | 1340 | 0.00 | 16.65 | - | - | - |
| River Rd South (Denner Ranch) | 1/15/26 | 66.6 2.8 | 1504 | 33.0 1.7 | 0756 | 43.3 2.1 | 92 | 100 0 | 60 18 | 1.8 | 7.9 0.7 | 1328 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 1/15/26 | 66.3 1.6 | 1526 | 34.3 2.7 | 0751 | 42.7 2.8 | 90 | 100 0 | 58 22 | 0.9 | 6.9 1.7 | 1334 | 0.04 | 14.40 | 0.006 0.001 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 1/15/26 | 64.8 1.0 | 1442 | 34.8 2.4 | 0659 | 43.5 2.5 | 91 | 100 0 | 62 17 | - | - | - | 0.00 | 17.48 | - | - | - |
| Guerneville Rd West (Balletto) | 1/15/26 | 64.9 2.5 | 1557 | 34.9 3.0 | 0703 | 42.4 2.2 | 92 | 100 0 | 65 19 | 1.0 | 6.5 0.5 | 1314 | 0.00 | 17.41 | - | - | - |
| Sanchietti Ranch | 1/15/26 | 65.2 0.5 | 1525 | 36.2 3.5 | 0649 | 44.5 2.3 | - | 100 0 | 71 16 | 1.3 | 8.1 1.7 | 1339 | 0.00 | 18.31 | - | - | - |
| Occidental Rd (Sebastopol) | 1/15/26 | 65.4 1.0 | 1439 | 34.2 2.9 | 0624 | 45.6 0.9 | 100 | 100 0 | 100 15 | 1.0 | 7.7 1.8 | 1029 | 0.00 | 6.72 | - | - | - |
| Lower Westside Rd (Ranch 12) | 1/15/26 | 71.3 0.9 | 1344 | 35.8 2.0 | 0803 | 42.6 1.9 | 82 | 100 0 | 40 5 | 0.4 | 5.0 1.4 | 1406 | 0.00 | 22.83 | - | - | 0 |
| Guerneville (Laughlin Rd) | 1/15/26 | 65.2 1.9 | 1440 | 39.3 1.1 | 0758 | 45.8 0.9 | 92 | 99 0 | 62 1 | 0.6 | 4.2 0.7 | 0527 | 0.01 | 30.87 | - | - | - |
| Korbel (Winery) | 1/15/26 | 66.4 1.7 | 1448 | 40.7 1.4 | 0758 | 46.8 0.8 | 93 | 100 0 | 56 2 | 1.0 | 6.7 3.0 | 1421 | 0.01 | 28.40 | - | - | - |
| Forestville (Shone Farms) | 1/15/26 | 65.8 1.2 | 1507 | 35.6 1.4 | 0425 | 44.1 1.9 | 88 | 98 0 | 57 12 | 1.0 | 7.8 1.8 | 1331 | 0.00 | 24.15 | 0.056 0.001 | 247 0 | 0 |
| Forestville-NE (Ranch 30) | 1/15/26 | 66.5 1.1 | 1435 | 37.6 1.2 | 0629 | 45.5 1.6 | 92 | 100 0 | 59 10 | 1.1 | 7.3 0.6 | 1351 | 0.01 | 22.46 | 0.054 0.003 | 248 0 | - |
| Green Valley Vineyard | 1/15/26 | 66.0 0.9 | 1552 | 35.5 1.4 | 0552 | 45.0 1.6 | 89 | 99 0 | 57 10 | 1.8 | 6.8 0.0 | 0954 | 0.00 | 27.20 | 0.009 0.006 | 12 30 | - |
| Green Valley (Sanchietti) | 1/15/26 | 69.2 0.6 | 1519 | 35.4 3.7 | 0801 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 1/15/26 | 67.4 0.2 | 1538 | 33.8 2.9 | 0756 | 41.8 1.7 | 92 | 100 0 | 62 12 | - | - | - | 0.00 | 24.46 | - | - | - |
| Graton-South (Mill Station Rd) | 1/15/26 | 66.9 2.2 | 1507 | 34.6 3.8 | 0804 | 42.2 2.8 | 91 | 100 0 | 57 16 | 0.1 | 3.9 0.8 | 1433 | 0.00 | 21.64 | - | - | 0 |
| Occidental (Horseshoe Bend) | 1/15/26 | 67.3 1.2 | 1458 | 46.8 1.9 | 0511 | 46.5 1.6 | - | 90 2 | 49 1 | - | - | - | 0.02 | 15.67 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 1/15/26 | 65.7 1.3 | 1502 | 34.8 4.4 | 0246 | 42.3 2.1 | 92 | 100 0 | 61 12 | 0.9 | 6.7 1.4 | 1036 | 0.01 | 7.08 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 1/15/26 | 64.9 1.5 | 1452 | 41.6 0.1 | 0736 | 48.0 2.2 | 90 | 100 3 | 63 12 | 0.5 | 6.0 0.2 | 1324 | 0.00 | 21.46 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 1/15/26 | 71.8 3.1 | 1430 | 58.9 0.4 | 0759 | 30.7 0.0 | 28 | 40 21 | 17 2 | 4.9 | 15.4 10.7 | 1150 | 0.00 | 37.55 | 0.118 0.051 | 275 4 | - |
| Max | 71.8 | - | 58.9 | - | 48.0 | 100 | 100 | 100 | 4.9 | 15.4 | - | 0.04 | 37.55 | 0.118 | 282 | - | |
| Avg | - | - | - | - | 39.2 | 83 | - | - | 1.0 | - | - | - | - | - | - | - | |
| Min | 64.2 | - | 31.8 | - | -10.7 | 28 | 40 | 0 | 0.1 | 3.9 | - | 0.00 | 6.72 | 0.006 | 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 | 1/15/26 | 74.4 6.6 | 1335 | 42.7 3.1 | 0516 | 39.5 2.2 | 94 7 | 20 23 | 2.0 0.2 | 12.0 5.9 | 1218 | NNW | 332 | 0.00 | 5.41 | 0.082 0.011 | 304 5 | - |
| Lower Bennett Valley | 1/15/26 | 67.5 0.5 | 1439 | 30.4 0.0 | 0659 | 40.7 1.2 | 100 0 | 56 15 | 1.4 0.1 | 9.2 1.2 | 1307 | NW | 323 | 0.00 | 17.51 | 0.061 0.001 | 262 2 | 0 0 |
| Kenwood (Wildwood) | 1/15/26 | 65.8 2.4 | 1441 | 32.9 0.1 | 0701 | 43.3 1.5 | 100 0 | 57 9 | 2.9 0.9 | 11.0 3.7 | 1214 | SSE | 158 | 0.00 | 21.09 | 0.056 0.001 | 228 3 | - |
| Sonoma Valley (Bedrock) | 1/15/26 | 64.4 0.1 | 1527 | 32.9 0.9 | 0744 | 41.7 1.3 | 99 1 | 56 5 | - | - | - | - | 0.00 | 17.00 | - | - | - |
| Sonoma-West (Arnold) | 1/15/26 | 67.1 1.2 | 1440 | 34.6 1.2 | 0710 | 42.8 1.0 | 100 0 | 53 1 | 1.5 0.0 | 7.7 1.4 | 1221 | SE | 140 | 0.00 | 14.29 | 0.069 0.001 | 298 0 | - |
| Sonoma Valley HS | 1/15/26 | 65.4 1.1 | 1427 | 34.6 1.0 | 0713 | 44.0 1.2 | 100 0 | 63 3 | 0.9 0.2 | 7.4 0.7 | 1317 | SE | 127 | 0.01 | 5.07 | 0.056 0.000 | 261 1 | - |
| Sonoma East (Bundschu01) | 1/15/26 | 67.6 3.2 | 1441 | 33.2 1.1 | 0747 | 42.0 1.5 | 98 0 | 53 2 | 1.2 0.3 | 6.6 2.0 | 1246 | S | 186 | 0.00 | 11.65 | 0.060 0.003 | 273 6 | - |
| Schellville (Sasaki) | 1/15/26 | 65.9 0.9 | 1351 | 32.6 0.4 | 0716 | 41.6 0.8 | 98 0 | 57 5 | 1.4 0.5 | 10.8 3.4 | 1445 | NE | 41 | 0.00 | 0.00 | - | - | 0 0 |
| Sonoma-SE (Napoli) | 1/15/26 | 67.1 1.1 | 1405 | 34.5 0.7 | 0755 | 42.4 1.4 | 98 1 | 56 6 | 0.5 0.1 | 7.1 0.3 | 1310 | SSE | 168 | 0.01 | 10.95 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 1/15/26 | 64.7 0.8 | 1406 | 32.5 0.0 | 0740 | 41.7 0.9 | 98 0 | 58 7 | 2.8 0.8 | 12.2 5.1 | 1251 | SE | 134 | 0.00 | 13.94 | 0.067 0.002 | 284 6 | - |
| Carneros (Ranch 71) | 1/15/26 | 65.0 1.5 | 1422 | 45.0 2.4 | 0358 | 47.4 2.2 | 93 1 | 59 5 | 1.8 0.6 | 6.8 2.1 | 0739 | ESE | 103 | 0.00 | 11.98 | 0.058 0.003 | 267 4 | 0 0 |
| Carneros Upper (Ranch 81) | 1/15/26 | 66.4 2.7 | 1429 | 44.5 0.0 | 0842 | 46.9 1.9 | - | - | 2.2 0.5 | 8.0 2.1 | 1119 | SW | 228 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 1/15/26 | 65.0 0.8 | 1344 | 36.1 0.9 | 0714 | 14.1 5.5 | 100 0 | 0 0 | 1.2 0.1 | 8.1 1.5 | 1257 | S | 187 | 0.00 | 12.79 | 0.043 0.001 | 170 2 | - |
| Rohnert Park-West (Stony Point) | 1/15/26 | 64.2 3.3 | 1447 | 34.5 2.7 | 0017 | 41.4 1.7 | 100 0 | 67 14 | 1.2 0.5 | 10.3 3.0 | 1327 | SE | 124 | 0.00 | 1.57 | - | - | - |
| Cartograph Wines Base | 1/15/26 | 62.8 2.8 | 1547 | 37.0 1.2 | 0758 | 46.9 1.2 | 100 0 | 70 10 | 1.8 0.4 | 10.9 3.3 | 1251 | E | 97 | 0.00 | 17.42 | 0.047 0.006 | 233 24 | - |
| Cartograph Wines Remote | 1/15/26 | 61.9 0.1 | 1308 | 35.1 2.8 | 0610 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 1/15/26 | 64.7 4.5 | 1602 | 32.1 3.3 | 0138 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 1/15/26 | 62.8 1.7 | 1515 | 32.3 0.1 | 0728 | 41.9 1.2 | 99 0 | 64 12 | 3.5 1.8 | 14.2 4.8 | 1336 | SE | 126 | 0.00 | 15.11 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 1/15/26 | 63.4 0.2 | 1501 | 46.2 1.0 | 0324 | 46.4 1.9 | 94 10 | 48 7 | 4.8 1.4 | 12.8 2.1 | 0440 | E | 84 | 0.00 | 14.80 | 0.060 0.003 | 264 8 | 0 0 |
| Petaluma (Ranch 10) | 1/15/26 | 64.9 1.7 | 1549 | 35.7 3.4 | 0047 | 44.2 4.3 | 100 0 | 60 13 | 1.6 1.0 | 9.4 2.3 | 1126 | SE | 137 | 0.00 | 11.56 | 0.045 0.004 | 200 14 | 0 0 |
| Max | 74.4 | - | 46.2 | - | 47.4 | 100 | 70 | 4.8 | 14.2 | - | - | 0.01 | 21.09 | 0.082 | 304 | - | |
| Avg | - | - | - | - | 41.6 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 61.9 | - | 30.4 | - | 14.1 | 93 | 0 | 0.5 | 6.6 | - | - | 0.00 | 0.00 | 0.043 | 170 | - |