| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | 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) | 12/4/25 | 65.7 1.5 | 1344 | 47.0 3.0 | 2258 | 34.0 7.1 | 47 | 74 5 | 29 11 | 1.3 | 6.7 4.4 | 1317 | ESE | 117 | 0.00 | 9.81 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/4/25 | 64.7 2.0 | 1354 | 48.4 0.2 | 0349 | 30.8 6.5 | 41 | 58 1 | 22 1 | 3.7 | 15.6 6.8 | 2359 | NNW | 327 | 0.00 | 10.06 | 0.073 0.020 | 265 32 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/4/25 | 66.0 2.9 | 1427 | 35.0 3.6 | 0359 | 35.7 0.5 | - | - | - | 2.4 | 14.6 2.1 | 0553 | NNW | 336 | 0.00 | 7.68 | 0.057 0.002 | 227 28 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/4/25 | 64.3 3.0 | 1429 | 40.2 3.0 | 0735 | 36.4 1.6 | 59 | 90 4 | 39 15 | 3.6 | 11.5 5.6 | 0959 | NNW | 330 | 0.00 | 8.28 | 0.065 0.009 | 227 32 | 0 0 |
| Geyserville-North (Hoffman) | 12/4/25 | 61.6 9.3 | 1409 | 32.1 3.2 | 0703 | 37.0 0.2 | 79 | 95 2 | 45 22 | 1.4 | 6.9 6.1 | 1437 | SSE | 153 | 0.00 | 0.00 | 0.051 0.006 | 222 33 | 0 0 |
| Geyserville (Ranch 3) | 12/4/25 | 61.1 8.8 | 1453 | 33.4 3.5 | 0710 | 38.4 2.0 | 83 | 100 0 | 43 23 | 1.4 | 7.9 5.7 | 1226 | ESE | 103 | 0.00 | 7.60 | 0.049 0.004 | 220 33 | 0 0 |
| Geyserville-East (Ranch 40) | 12/4/25 | 60.6 10.9 | 1453 | 40.1 4.4 | 0743 | 38.4 3.3 | 67 | 92 4 | 44 24 | 3.9 | 10.6 4.6 | 1418 | S | 184 | 0.00 | 7.91 | 0.058 0.003 | 243 39 | 0 0 |
| Geyserville-South (Nervo Station) | 12/4/25 | 61.2 9.0 | 1514 | 36.1 3.0 | 0655 | - | - | - | - | 1.6 | 6.8 5.4 | 1059 | E | 98 | 0.00 | 6.07 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/4/25 | 64.4 7.9 | 1422 | 31.0 4.6 | 0617 | 36.7 0.1 | 79 | 100 0 | 39 21 | 0.7 | 4.6 10.8 | 1452 | S | 188 | 0.00 | 7.77 | 0.040 0.002 | 193 23 | 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) | 12/4/25 | 63.0 8.6 | 1501 | 30.3 4.2 | 0659 | 37.0 1.1 | 82 | 100 0 | 43 25 | 0.9 | 6.2 15.7 | 1506 | SW | 214 | 0.00 | 8.29 | 0.045 0.016 | 203 19 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/4/25 | 61.2 7.9 | 1515 | 29.9 5.0 | 0623 | 36.5 0.4 | 81 | 100 0 | 44 26 | 1.1 | 6.3 2.9 | 1258 | SSE | 153 | 0.00 | 8.32 | 0.041 0.003 | 174 13 | - |
| Knights Valley (Bavarian Lion) | 12/4/25 | 63.8 2.8 | 1439 | 30.2 4.5 | 0625 | 35.6 8.6 | 78 | 98 8 | 37 20 | 1.4 | 6.8 16.0 | 1510 | SW | 225 | 0.00 | 8.54 | 0.049 0.042 | 225 28 | - |
| Upper Dry Creek Valley | 12/4/25 | 62.1 8.2 | 1428 | 33.3 2.9 | 0659 | 38.0 1.1 | 81 | 98 1 | 42 25 | 1.3 | 8.9 0.5 | 1242 | SSE | 161 | 0.00 | 8.14 | 0.055 0.002 | 246 39 | - |
| Lower Dry Creek Valley | 12/4/25 | 61.0 10.8 | 1447 | 31.6 4.0 | 0644 | 38.6 0.6 | 84 | 100 0 | 47 29 | 2.1 | 9.2 0.0 | 1205 | SSE | 160 | 0.00 | 8.44 | 0.050 0.003 | 220 23 | 0 0 |
| Max | 66.0 | - | 48.4 | - | 38.6 | 84 | 100 | 47 | 3.9 | 15.6 | - | - | 0.00 | 10.06 | 0.073 | 265 | - | |
| Avg | - | - | - | - | 36.4 | 72 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 60.6 | - | 29.9 | - | 30.8 | 41 | 58 | 22 | 0.7 | 4.6 | - | - | 0.00 | 0.00 | 0.040 | 174 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | 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) | 12/4/25 | 61.5 10.9 | 1515 | 33.4 3.7 | 0638 | - | - | 100 0 | 46 29 | 0.9 | 7.7 4.5 | 1420 | 0.00 | 2.30 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/4/25 | 62.9 12.3 | 1523 | 36.2 3.9 | 0707 | 39.8 0.8 | 78 | 86 5 | 51 28 | 1.0 | 6.4 3.1 | 1409 | 0.00 | 8.70 | 0.047 0.013 | 228 5 | - |
| Windsor-East (Ranch 16) | 12/4/25 | 61.4 7.8 | 1458 | 31.4 4.7 | 0640 | 37.6 3.4 | 82 | 100 0 | 50 34 | 0.9 | 6.8 4.0 | 1249 | 0.00 | 6.49 | 0.046 0.017 | 221 15 | 0 |
| Mark West-North (Ranch 14) | 12/4/25 | 61.3 7.9 | 1414 | 33.0 4.4 | 0648 | 38.2 3.7 | 81 | 97 2 | 48 33 | 0.9 | 6.4 4.7 | 1330 | 0.00 | 7.48 | 0.009 0.014 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/4/25 | 60.9 8.6 | 1444 | 30.9 4.4 | 0709 | 37.9 1.4 | 85 | 99 1 | 49 32 | 1.0 | 7.3 6.9 | 1125 | 0.00 | 1.83 | 0.045 0.021 | 232 12 | 0 |
| Fulton-NW (Ranch 5) | 12/4/25 | 58.9 9.4 | 1453 | 31.6 4.7 | 0714 | 38.4 19.5 | 85 | 100 0 | 3 0 | 1.2 | 7.2 7.2 | 0950 | 0.00 | 7.57 | 0.044 0.027 | 219 10 | 0 |
| Windsor-South (Laughlin Rd) | 12/4/25 | 61.4 8.1 | 1402 | 33.0 5.1 | 0648 | 38.5 26.7 | 82 | 100 0 | 0 0 | - | - | - | 0.00 | 7.07 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/4/25 | 59.9 8.8 | 1453 | 32.5 4.8 | 0654 | 38.3 1.2 | 81 | 95 3 | 55 32 | 1.1 | 7.5 4.7 | 1329 | 0.00 | 7.08 | - | - | - |
| Fulton-SW (Ranch 21) | 12/4/25 | 58.8 9.4 | 1409 | 33.7 3.8 | 0647 | 36.7 26.4 | 83 | 100 0 | 0 0 | 1.7 | 8.2 6.8 | 1435 | 0.00 | 7.42 | 0.051 0.019 | 250 3 | - |
| Santa Rosa-NW (Goldfields) | 12/4/25 | 60.9 9.8 | 1414 | 32.3 5.4 | 0648 | 39.0 2.5 | 84 | 100 0 | 53 35 | 1.7 | 8.2 7.0 | 1547 | 0.00 | 7.72 | 0.043 0.025 | 208 10 | - |
| Goldfields Remote | 12/4/25 | 59.2 9.4 | 1457 | 31.4 5.4 | 0648 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/4/25 | 59.1 8.2 | 1458 | 31.2 5.4 | 0653 | 39.8 0.4 | 91 | 100 0 | 62 39 | 1.0 | 6.8 2.3 | 1317 | 0.00 | 5.99 | - | - | - |
| River Rd South (Denner Ranch) | 12/4/25 | 59.5 11.5 | 1410 | 33.1 4.9 | 0710 | 39.7 1.3 | 88 | 100 0 | 55 36 | 2.2 | 9.4 3.9 | 1550 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/4/25 | 60.1 9.6 | 1416 | 32.6 5.7 | 0714 | 38.9 1.6 | 85 | 100 0 | 54 36 | 0.8 | 7.5 4.8 | 1313 | 0.00 | 8.11 | 0.007 0.018 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/4/25 | 59.2 10.0 | 1335 | 32.8 5.2 | 0721 | 39.4 1.1 | 86 | 100 0 | 54 36 | - | - | - | 0.00 | 7.13 | - | - | - |
| Guerneville Rd West (Balletto) | 12/4/25 | 59.1 9.2 | 1500 | 30.7 5.1 | 0659 | 38.5 0.0 | 88 | 100 0 | 61 38 | 1.2 | 7.8 5.1 | 1554 | 0.00 | 5.82 | - | - | - |
| Sanchietti Ranch | 12/4/25 | 58.6 10.2 | 1425 | 32.2 5.3 | 0629 | 40.4 0.3 | - | 100 0 | 66 41 | 1.8 | 8.9 1.9 | 1501 | 0.00 | 6.97 | - | - | - |
| Occidental Rd (Sebastopol) | 12/4/25 | 59.5 11.1 | 1440 | 31.2 4.8 | 0609 | 42.6 1.1 | 100 | 100 0 | 98 62 | 1.1 | 6.4 5.5 | 1500 | 0.00 | 5.79 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/4/25 | 62.5 9.8 | 1358 | 32.8 4.1 | 0706 | 38.5 0.6 | 82 | 100 0 | 43 26 | 0.8 | 6.6 0.5 | 1047 | 0.00 | 8.40 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/4/25 | 60.4 2.8 | 1257 | 32.6 4.6 | 0641 | 39.6 3.1 | 88 | 99 0 | 50 1 | 0.5 | 3.8 0.9 | 1403 | 0.00 | 9.26 | - | - | - |
| Korbel (Winery) | 12/4/25 | 61.1 4.5 | 1436 | 36.3 2.9 | 0712 | 40.9 2.9 | 88 | 100 0 | 46 0 | 0.6 | 7.2 2.1 | 1141 | 0.01 | 9.43 | - | - | - |
| Forestville (Shone Farms) | 12/4/25 | 60.3 10.4 | 1400 | 34.1 3.0 | 0726 | 39.5 0.5 | 82 | 96 2 | 50 29 | 1.5 | 8.8 3.5 | 1435 | 0.00 | 9.10 | 0.048 0.011 | 228 22 | 0 |
| Forestville-NE (Ranch 30) | 12/4/25 | 61.6 12.0 | 1354 | 32.0 5.7 | 0652 | 40.1 1.0 | 88 | 100 0 | 53 28 | 1.4 | 8.2 7.5 | 1627 | 0.00 | 8.56 | 0.048 0.009 | 242 18 | - |
| Green Valley Vineyard | 12/4/25 | 60.8 8.4 | 1454 | 35.5 2.8 | 0716 | 39.7 1.4 | 83 | 98 1 | 46 27 | 1.4 | 6.1 3.7 | 0026 | 0.00 | 9.85 | 0.035 0.012 | 153 1 | - |
| Green Valley (Sanchietti) | 12/4/25 | 62.7 7.9 | 1404 | 30.7 5.0 | 0619 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/4/25 | 60.9 7.4 | 1450 | 31.4 4.8 | 0638 | 39.1 0.8 | 90 | 100 0 | 54 28 | - | - | - | 0.00 | 8.55 | - | - | - |
| Graton-South (Mill Station Rd) | 12/4/25 | 60.4 8.5 | 1508 | 30.1 4.4 | 0701 | 37.7 0.4 | 87 | 99 1 | 53 33 | 0.2 | 4.7 2.6 | 1551 | 0.00 | 8.33 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/4/25 | 60.4 8.6 | 1456 | 43.0 0.9 | 0700 | 38.7 6.1 | - | 89 11 | 42 19 | - | - | - | 0.00 | 8.39 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/4/25 | 58.6 9.6 | 1520 | 31.5 4.6 | 0716 | 38.7 0.8 | 89 | 100 0 | 58 32 | 1.0 | 6.9 3.3 | 0943 | 0.00 | 6.96 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/4/25 | 57.7 9.3 | 1457 | 39.4 2.1 | 0720 | 41.1 4.6 | 80 | 99 1 | 62 36 | 0.6 | 6.0 6.7 | 1113 | 0.00 | 7.40 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/4/25 | 60.8 2.5 | 1416 | 49.5 0.9 | 1850 | 31.5 5.8 | 42 | 69 7 | 23 7 | 2.2 | 8.3 9.3 | 0403 | 0.00 | 13.08 | 0.060 0.018 | 233 18 | - |
| Max | 62.9 | - | 49.5 | - | 42.6 | 100 | 100 | 98 | 2.2 | 9.4 | - | 0.01 | 13.08 | 0.060 | 250 | - | |
| Avg | - | - | - | - | 38.9 | 84 | - | - | 1.1 | - | - | - | - | - | - | - | |
| Min | 57.7 | - | 30.1 | - | 31.5 | 42 | 69 | 0 | 0.2 | 3.8 | - | 0.00 | 1.83 | 0.007 | 0 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | 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 | 12/4/25 | 59.4 8.1 | 1413 | 40.2 1.5 | 0704 | 36.6 10.6 | 88 9 | 44 28 | 1.8 1.3 | 6.7 11.4 | 2352 | N | 7 | 0.00 | 5.39 | 0.056 0.019 | 273 29 | - |
| Lower Bennett Valley | 12/4/25 | 61.3 8.9 | 1246 | 28.9 4.6 | 0637 | 36.5 5.3 | 100 0 | 47 31 | 1.2 2.3 | 7.1 12.4 | 2358 | NW | 325 | 0.00 | 6.50 | 0.049 0.033 | 237 16 | 0 0 |
| Kenwood (Wildwood) | 12/4/25 | 57.9 10.2 | 1412 | 32.6 4.2 | 0703 | 37.9 7.7 | 100 0 | 55 39 | 1.6 1.4 | 8.6 12.9 | 1502 | SW | 232 | 0.00 | 6.82 | 0.036 0.036 | 169 21 | - |
| Sonoma Valley (Bedrock) | 12/4/25 | 54.5 15.8 | 1336 | 30.2 5.0 | 0712 | 36.0 5.7 | 97 2 | 58 43 | - | - | - | - | 0.00 | 6.71 | - | - | - |
| Sonoma-West (Arnold) | 12/4/25 | 56.5 15.6 | 1303 | 32.1 3.3 | 0615 | 37.4 3.2 | 100 0 | 56 40 | 1.3 1.0 | 9.1 7.7 | 1302 | SSE | 168 | 0.00 | 4.40 | 0.052 0.022 | 245 11 | - |
| Sonoma Valley HS | 12/4/25 | 54.9 13.1 | 1258 | 32.9 5.3 | 0609 | 39.7 2.5 | 100 0 | 65 42 | 1.0 1.4 | 9.2 6.5 | 1332 | SSE | 153 | 0.00 | 4.63 | 0.041 0.028 | 210 12 | - |
| Sonoma East (Bundschu01) | 12/4/25 | 55.6 12.8 | 1428 | 31.4 3.7 | 0440 | 37.3 3.8 | 96 1 | 60 41 | 1.7 1.1 | 9.9 5.5 | 1309 | SSW | 198 | 0.00 | 0.13 | 0.045 0.030 | 227 11 | - |
| Schellville (Sasaki) | 12/4/25 | 55.3 14.3 | 1242 | 31.8 4.3 | 0558 | 37.4 2.7 | 96 1 | 61 42 | 1.3 0.5 | 13.2 2.7 | 1333 | NE | 56 | 0.00 | 4.40 | - | - | 0 0 |
| Sonoma-SE (Napoli) | 12/4/25 | 57.0 13.9 | 1214 | 32.3 4.2 | 0508 | 37.8 4.7 | 96 0 | 58 40 | 1.6 1.0 | 9.8 7.4 | 1226 | SSE | 164 | 0.00 | 4.46 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/4/25 | 54.4 14.3 | 1316 | 31.0 4.5 | 0456 | 37.1 2.6 | 97 1 | 62 44 | 2.5 0.0 | 11.8 1.1 | 1357 | SE | 132 | 0.00 | 4.89 | 0.047 0.024 | 241 3 | - |
| Carneros (Ranch 71) | 12/4/25 | 53.7 14.7 | 1147 | 38.2 3.2 | 0805 | 40.4 9.9 | 100 0 | 54 36 | 2.3 0.4 | 9.6 5.0 | 1345 | E | 90 | 0.00 | 4.47 | 0.042 0.031 | 224 7 | 0 0 |
| Carneros Upper (Ranch 81) | 12/4/25 | 55.5 11.8 | 1246 | 38.0 2.4 | 0628 | 37.0 8.4 | - | - | 3.7 0.1 | 13.4 4.9 | 1338 | SE | 134 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/4/25 | 54.8 13.3 | 1212 | 33.4 2.6 | 0433 | 38.5 3.8 | 100 0 | 62 41 | 1.6 0.3 | 11.2 6.6 | 1300 | S | 176 | 0.00 | 4.76 | 0.037 0.025 | 172 2 | - |
| Rohnert Park-West (Stony Point) | 12/4/25 | 57.1 11.2 | 1347 | 30.0 4.7 | 0705 | 37.7 0.2 | 98 2 | 64 40 | 1.6 0.7 | 9.9 2.9 | 0942 | E | 98 | 0.00 | 1.56 | - | - | - |
| Cartograph Wines Base | 12/4/25 | 56.6 9.9 | 1420 | 39.8 0.6 | 0829 | 41.7 4.7 | 99 1 | 68 41 | 2.3 0.5 | 10.9 1.7 | 0837 | ESE | 107 | 0.00 | 6.66 | 0.041 0.029 | 218 14 | - |
| Cartograph Wines Remote | 12/4/25 | 55.6 11.5 | 1151 | 32.6 3.1 | 0647 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/4/25 | 57.9 11.9 | 1341 | 29.6 3.0 | 0708 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/4/25 | 56.2 14.6 | 1327 | 30.4 5.4 | 0658 | 37.2 1.0 | 98 1 | 59 39 | 3.0 1.1 | 13.8 0.8 | 0817 | ESE | 102 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/4/25 | 53.2 16.6 | 1314 | 37.8 1.9 | 0704 | 39.8 7.8 | 100 0 | 50 31 | 4.2 1.8 | 13.2 1.1 | 1044 | E | 82 | 0.00 | 5.79 | 0.044 0.017 | 225 6 | 0 0 |
| Petaluma (Ranch 10) | 12/4/25 | 58.8 14.9 | 1247 | 33.1 4.6 | 0457 | 38.1 0.9 | 100 0 | 56 38 | 1.1 0.1 | 7.4 1.5 | 1318 | SSE | 159 | 0.00 | 4.29 | 0.043 0.008 | 201 2 | 0 0 |
| Max | 61.3 | - | 40.2 | - | 41.7 | 100 | 68 | 4.2 | 13.8 | - | - | 0.00 | 6.82 | 0.056 | 273 | - | |
| Avg | - | - | - | - | 38.0 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 53.2 | - | 28.9 | - | 36.0 | 88 | 44 | 1.0 | 6.7 | - | - | 0.00 | 0.10 | 0.036 | 169 | - |