| 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) | 12/27/25 | 55.4 3.9 | 1325 | 40.5 4.3 | 0721 | 40.7 3.1 | 82 | 93 4 | 58 17 | 3.7 | 16.0 4.2 | 0029 | WNW | 295 | 0.00 | 21.69 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/27/25 | 51.8 2.6 | 1403 | 37.2 4.2 | 0742 | 39.8 2.6 | 91 | 100 0 | 62 17 | 8.6 | 25.0 27.2 | 0218 | NNW | 345 | 0.00 | 22.24 | 0.042 0.026 | 239 153 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/27/25 | 58.4 1.8 | 1452 | 40.2 4.0 | 2245 | 18.1 21.2 | - | - | - | 3.1 | 15.6 11.0 | 1011 | NNW | 338 | 0.00 | 19.13 | 0.049 0.025 | 222 132 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/27/25 | 57.9 1.3 | 1547 | 42.0 4.4 | 2233 | 43.2 3.6 | 84 | 98 2 | 62 17 | 6.2 | 20.1 9.1 | 2328 | NE | 45 | 0.00 | 20.30 | 0.044 0.026 | 224 140 | 0 0 |
| Geyserville-North (Hoffman) | 12/27/25 | 60.2 | 1526 | 41.6 | 2326 | 43.0 | 79 | 94 | 56 | 3.0 | 29.2 | 0049 | SW | 219 | 0.00 | 0.00 | 0.093 | 358 | 0 |
| Geyserville (Ranch 3) | 12/27/25 | 58.4 4.0 | 1544 | 41.7 2.3 | 2224 | 43.7 4.1 | 86 | 100 0 | 55 22 | 3.4 | 12.8 3.6 | 0815 | W | 280 | 0.00 | 17.73 | 0.047 0.031 | 226 157 | 0 0 |
| Geyserville-East (Ranch 40) | 12/27/25 | 61.8 5.7 | 1351 | 41.6 3.1 | 0001 | 43.3 3.4 | 83 | 100 0 | 56 24 | 3.7 | 19.8 21.0 | 0601 | NNW | 328 | 0.00 | 17.73 | 0.048 0.027 | 233 146 | 0 0 |
| Geyserville-South (Nervo Station) | 12/27/25 | 59.3 5.2 | 1448 | 41.4 3.3 | 2359 | - | - | - | - | 2.6 | 20.5 2.7 | 0602 | NW | 305 | 0.01 | 13.03 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/27/25 | 62.5 6.3 | 1427 | 35.7 7.5 | 2358 | 41.5 4.1 | 86 | 100 0 | 48 26 | 1.3 | 11.4 12.3 | 1047 | WNW | 301 | 0.00 | 16.13 | 0.039 0.017 | 192 115 | 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) | 12/27/25 | 61.8 3.2 | 1532 | 33.6 6.6 | 2328 | 40.9 5.4 | 88 | 100 0 | 46 25 | 1.5 | 9.7 7.5 | 1054 | WNW | 302 | 0.01 | 16.68 | 0.042 0.020 | 196 118 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/27/25 | 58.5 4.1 | 1359 | 34.7 7.6 | 2340 | 40.9 4.9 | 90 | 100 0 | 54 20 | 1.5 | 8.3 12.7 | 1054 | WNW | 297 | 0.00 | 16.54 | 0.038 0.017 | 189 119 | - |
| Knights Valley (Bavarian Lion) | 12/27/25 | 59.3 4.7 | 1417 | 32.6 6.2 | 2235 | 39.6 5.0 | 86 | 98 1 | 42 30 | 2.0 | 10.4 8.9 | 1551 | ENE | 72 | 0.00 | 17.04 | 0.045 0.021 | 208 130 | - |
| Upper Dry Creek Valley | 12/27/25 | 60.5 4.9 | 1443 | 38.1 4.6 | 2233 | 42.1 4.2 | 84 | 98 1 | 46 25 | 1.8 | 12.8 2.6 | 0911 | WNW | 293 | 0.00 | 19.64 | 0.051 0.031 | 241 167 | - |
| Lower Dry Creek Valley | 12/27/25 | 61.4 1.8 | 1529 | 38.9 1.5 | 2231 | 42.5 4.6 | 85 | 100 0 | 45 22 | 3.0 | 12.6 7.0 | 0930 | NW | 317 | 0.01 | 18.26 | 0.051 0.026 | 225 130 | 0 0 |
| Max | 62.5 | - | 42.0 | - | 43.7 | 91 | 100 | 62 | 8.6 | 29.2 | - | - | 0.01 | 22.24 | 0.093 | 358 | - | |
| Avg | - | - | - | - | 39.9 | 85 | - | - | 3.2 | - | - | - | - | - | - | - | - | |
| Min | 51.8 | - | 32.6 | - | 18.1 | 79 | 93 | 42 | 1.3 | 8.3 | - | - | 0.00 | 0.00 | 0.038 | 189 | - |
| 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) | 12/27/25 | 61.6 2.8 | 1548 | 34.9 4.4 | 0654 | - | - | 100 0 | 48 21 | 0.5 | 9.9 12.9 | 1025 | 0.00 | 10.79 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/27/25 | 65.4 7.5 | 1559 | 36.6 5.4 | 0621 | 41.2 4.4 | 82 | 93 5 | 50 29 | 1.1 | 8.8 11.2 | 1115 | 0.01 | 16.11 | 0.047 0.022 | 224 121 | - |
| Windsor-East (Ranch 16) | 12/27/25 | 61.6 3.6 | 1606 | 32.6 5.6 | 0737 | 39.7 5.7 | 87 | 100 0 | 47 21 | 1.2 | 8.1 19.2 | 1244 | 0.00 | 12.26 | 0.046 0.016 | 215 118 | 0 |
| Mark West-North (Ranch 14) | 12/27/25 | 61.5 3.9 | 1445 | 34.7 4.6 | 0731 | 40.0 5.4 | 85 | 99 1 | 48 20 | 0.5 | 5.6 13.0 | 1756 | 0.00 | 13.78 | 0.006 0.006 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/27/25 | 59.9 2.8 | 1454 | 33.7 4.4 | 0732 | 39.8 5.9 | 89 | 100 1 | 52 20 | 0.9 | 8.9 14.6 | 1348 | 0.01 | 9.00 | 0.046 0.018 | 229 130 | 0 |
| Fulton-NW (Ranch 5) | 12/27/25 | 58.7 2.5 | 1529 | 33.5 5.1 | 0740 | 10.0 32.7 | 49 | 100 0 | 3 0 | 1.2 | 8.9 16.5 | 1100 | 0.00 | 13.74 | 0.044 0.016 | 222 128 | 0 |
| Windsor-South (Laughlin Rd) | 12/27/25 | 62.1 3.9 | 1458 | 35.1 5.2 | 0705 | 0.2 43.5 | 45 | 100 0 | 0 0 | - | - | - | 0.01 | 13.17 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/27/25 | 58.5 1.9 | 1439 | 34.7 5.3 | 0741 | 41.0 4.8 | 88 | 98 1 | 60 9 | 1.3 | 9.9 10.3 | 1059 | 0.00 | 13.36 | - | - | - |
| Fulton-SW (Ranch 21) | 12/27/25 | 58.9 2.2 | 1430 | 34.2 5.3 | 0649 | -12.9 52.2 | 39 | 100 0 | 0 0 | 1.5 | 8.0 21.9 | 1050 | 0.00 | 13.30 | 0.053 0.020 | 254 142 | - |
| Santa Rosa-NW (Goldfields) | 12/27/25 | 61.4 4.6 | 1339 | 35.0 4.5 | 0547 | 40.7 5.0 | 86 | 100 0 | 51 16 | 1.4 | 8.7 17.6 | 1119 | 0.00 | 14.05 | 0.043 0.014 | 205 128 | - |
| Goldfields Remote | 12/27/25 | 59.7 3.8 | 1312 | 35.1 3.8 | 0647 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/27/25 | 59.1 3.0 | 1531 | 34.7 3.4 | 0624 | 41.3 6.3 | 92 | 100 0 | 61 13 | 0.9 | 6.7 20.5 | 1330 | 0.00 | 11.53 | - | - | - |
| River Rd South (Denner Ranch) | 12/27/25 | 61.4 4.4 | 1516 | 35.7 4.6 | 0700 | 41.6 4.9 | 89 | 100 0 | 50 19 | 1.7 | 8.1 34.0 | 1105 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/27/25 | 61.2 4.6 | 1508 | 35.3 3.5 | 0651 | 40.5 5.1 | 88 | 100 2 | 51 16 | 0.8 | 6.4 17.4 | 1056 | 0.29 | 11.57 | 0.006 0.010 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/27/25 | 58.8 2.5 | 1448 | 36.6 3.7 | 0801 | 41.6 4.8 | 88 | 100 1 | 54 14 | - | - | - | 0.18 | 12.79 | - | - | - |
| Guerneville Rd West (Balletto) | 12/27/25 | 59.0 2.6 | 1446 | 35.0 3.7 | 0741 | 40.9 5.8 | 90 | 100 1 | 60 12 | 1.2 | 6.4 18.1 | 1129 | 0.00 | 12.18 | - | - | - |
| Sanchietti Ranch | 12/27/25 | 58.6 1.2 | 1546 | 36.0 4.4 | 0620 | 42.1 5.9 | - | 100 1 | 65 11 | 1.3 | 6.6 22.7 | 1048 | 0.00 | 13.30 | - | - | - |
| Occidental Rd (Sebastopol) | 12/27/25 | 59.7 2.2 | 1438 | 33.6 5.9 | 0732 | 44.0 6.1 | 100 | 100 0 | 100 0 | 1.1 | 6.6 23.0 | 1350 | 0.03 | 6.52 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/27/25 | 67.8 7.4 | 1313 | 36.6 4.1 | 0727 | 41.0 5.1 | 82 | 100 3 | 39 31 | 0.3 | 5.1 11.9 | 1159 | 0.01 | 15.53 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/27/25 | 58.8 1.3 | 1420 | 38.5 3.9 | 0755 | 43.7 3.2 | 94 | 99 0 | 65 5 | 0.8 | 3.7 19.0 | 1420 | 0.01 | 22.17 | - | - | - |
| Korbel (Winery) | 12/27/25 | 59.5 2.3 | 1408 | 40.0 3.8 | 0800 | 44.2 2.9 | 93 | 100 0 | 55 18 | 1.0 | 4.7 18.1 | 1454 | 0.01 | 19.89 | - | - | - |
| Forestville (Shone Farms) | 12/27/25 | 60.5 1.8 | 1612 | 36.5 4.7 | 0614 | 42.1 4.4 | 88 | 98 0 | 54 20 | 1.6 | 8.8 21.6 | 0037 | 0.01 | 17.14 | 0.046 0.015 | 221 130 | 0 |
| Forestville-NE (Ranch 30) | 12/27/25 | 63.1 4.9 | 1525 | 38.1 3.4 | 0739 | 43.2 4.1 | 91 | 100 0 | 53 26 | 1.3 | 7.9 21.1 | 1408 | 0.01 | 15.60 | 0.047 0.018 | 233 118 | - |
| Green Valley Vineyard | 12/27/25 | 59.1 2.3 | 1440 | 37.3 2.9 | 0550 | 41.3 4.1 | 87 | 99 0 | 51 20 | 1.8 | 6.1 21.5 | 1256 | 0.00 | 18.99 | 0.007 0.011 | 5 5 | - |
| Green Valley (Sanchietti) | 12/27/25 | 62.3 4.2 | 1451 | 34.9 4.2 | 0658 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/27/25 | 59.4 2.6 | 1533 | 33.0 4.4 | 0709 | 39.6 6.7 | 91 | 100 1 | 58 18 | - | - | - | 0.00 | 16.86 | - | - | - |
| Graton-South (Mill Station Rd) | 12/27/25 | 60.1 3.8 | 1431 | 33.1 5.0 | 0652 | 39.5 6.1 | 89 | 100 1 | 52 17 | 0.1 | 4.3 15.0 | 1242 | 0.00 | 15.10 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/27/25 | 57.7 2.3 | 1504 | 40.8 2.1 | 0539 | 41.9 3.8 | - | 100 3 | 51 23 | - | - | - | 0.22 | 14.17 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/27/25 | 57.8 1.3 | 1240 | 33.5 4.9 | 0752 | 40.2 6.1 | 92 | 100 1 | 61 15 | 0.7 | 6.3 9.7 | 1107 | 0.01 | 7.01 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/27/25 | 56.6 2.1 | 1426 | 42.1 2.8 | 0001 | 43.6 3.1 | 87 | 98 0 | 64 14 | 1.4 | 7.5 19.4 | 1109 | 0.00 | 15.58 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/27/25 | 52.9 4.6 | 1435 | 39.5 3.1 | 0640 | 40.8 3.6 | 87 | 97 0 | 67 20 | 2.8 | 11.1 14.2 | 0808 | 0.01 | 28.40 | 0.045 0.031 | 246 184 | - |
| Max | 67.8 | - | 42.1 | - | 44.2 | 100 | 100 | 100 | 2.8 | 11.1 | - | 0.29 | 28.40 | 0.053 | 254 | - | |
| Avg | - | - | - | - | 36.9 | 84 | - | - | 1.2 | - | - | - | - | - | - | - | |
| Min | 52.9 | - | 32.6 | - | -12.9 | 39 | 93 | 0 | 0.1 | 3.7 | - | 0.00 | 6.52 | 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 | 12/27/25 | 55.9 4.5 | 1411 | 38.8 2.7 | 2351 | 40.4 4.0 | 97 1 | 52 22 | 1.8 0.6 | 7.0 13.5 | 1301 | SE | 124 | 0.00 | 5.41 | 0.051 0.035 | 250 193 | - |
| Lower Bennett Valley | 12/27/25 | 58.4 2.6 | 1318 | 32.2 3.8 | 2358 | 39.7 4.7 | 100 0 | 58 9 | 1.2 3.2 | 7.4 17.4 | 1226 | NNW | 346 | 0.01 | 13.66 | 0.041 0.012 | 207 130 | 0 0 |
| Kenwood (Wildwood) | 12/27/25 | 58.8 4.5 | 1427 | 35.5 2.8 | 2255 | 41.2 3.7 | 100 0 | 50 23 | 1.9 1.8 | 9.9 15.1 | 1148 | ESE | 106 | 0.00 | 15.32 | 0.043 0.016 | 199 102 | - |
| Sonoma Valley (Bedrock) | 12/27/25 | 59.5 4.7 | 1405 | 34.2 1.9 | 2326 | 40.1 3.4 | 99 1 | 49 20 | - | - | - | - | 0.04 | 8.89 | - | - | - |
| Sonoma-West (Arnold) | 12/27/25 | 60.7 1.6 | 1405 | 33.8 4.6 | 0727 | 40.6 4.0 | 100 0 | 52 13 | 1.5 1.8 | 7.7 15.3 | 1500 | SE | 146 | 0.37 | 10.62 | 0.057 0.025 | 266 148 | - |
| Sonoma Valley HS | 12/27/25 | 57.9 0.9 | 1336 | 34.7 4.2 | 0725 | 41.9 4.6 | 100 0 | 65 10 | 0.9 1.2 | 8.2 3.2 | 1447 | SE | 138 | 0.01 | 4.78 | 0.046 0.024 | 234 140 | - |
| Sonoma East (Bundschu01) | 12/27/25 | 57.8 1.0 | 1457 | 34.1 2.4 | 0708 | 40.4 4.2 | 98 1 | 62 5 | 1.7 3.0 | 9.0 18.2 | 1329 | SSW | 195 | 0.00 | 0.13 | 0.052 0.022 | 256 167 | - |
| Schellville (Sasaki) | 12/8/25 | 48.2 0.5 | 1512 | 42.7 0.1 | 0740 | 42.6 0.2 | 95 1 | 83 0 | 1.2 0.0 | 9.8 2.3 | 1356 | NE | 55 | 0.00 | 4.40 | - | - | 0 0 |
| Sonoma-SE (Napoli) | 12/27/25 | 58.7 1.5 | 1254 | 35.3 3.1 | 0737 | 40.7 4.2 | 98 2 | 63 6 | 0.9 2.9 | 8.4 18.8 | 1508 | S | 183 | 0.01 | 7.91 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/27/25 | 57.9 0.1 | 1254 | 34.0 5.6 | 2353 | 40.5 5.2 | 98 2 | 61 7 | 2.1 4.4 | 11.0 15.2 | 1310 | SSE | 167 | 0.00 | 9.81 | 0.052 0.016 | 258 133 | - |
| Carneros (Ranch 71) | 12/27/25 | 56.3 1.0 | 1255 | 41.5 1.2 | 2235 | 43.9 1.9 | 95 1 | 66 2 | 1.6 4.9 | 8.5 20.5 | 1319 | S | 177 | 0.00 | 8.70 | 0.049 0.016 | 245 136 | 0 0 |
| Carneros Upper (Ranch 81) | 12/27/25 | 57.0 0.7 | 1249 | 42.1 2.6 | 0540 | 41.2 3.5 | - | - | 3.0 8.4 | 10.4 27.2 | 1411 | SSE | 168 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/27/25 | 56.5 1.6 | 1223 | 35.1 2.5 | 0718 | -10.8 33.7 | 100 0 | 0 0 | 1.2 1.5 | 8.4 15.6 | 1358 | S | 178 | 0.01 | 8.85 | 0.036 0.010 | 140 63 | - |
| Rohnert Park-West (Stony Point) | 12/27/25 | 58.8 1.9 | 1504 | 33.6 5.3 | 0711 | 39.6 6.7 | 100 4 | 60 11 | 0.9 4.8 | 8.0 17.0 | 1112 | WNW | 294 | 0.00 | 1.57 | - | - | - |
| Cartograph Wines Base | 12/27/25 | 57.2 1.0 | 1434 | 40.2 5.0 | 0629 | 44.0 3.5 | 100 3 | 66 9 | 2.1 5.5 | 9.4 24.9 | 1609 | SW | 216 | 0.01 | 12.37 | 0.043 0.012 | 229 116 | - |
| Cartograph Wines Remote | 12/27/25 | 55.8 1.7 | 1236 | 34.7 5.0 | 0714 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/27/25 | 60.0 2.4 | 1417 | 31.0 4.4 | 2355 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/27/25 | 60.3 3.5 | 1458 | 33.9 3.0 | 2347 | 39.6 4.6 | 98 1 | 53 9 | 1.3 4.1 | 9.7 18.7 | 1019 | NNW | 328 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/27/25 | 56.7 1.8 | 1507 | 42.3 2.0 | 0342 | 42.9 1.7 | 99 1 | 60 8 | 2.4 3.4 | 10.0 10.6 | 0212 | WNW | 285 | 0.00 | 11.37 | 0.046 0.015 | 238 135 | 0 0 |
| Petaluma (Ranch 10) | 12/27/25 | 61.9 3.0 | 1357 | 34.2 5.0 | 0740 | 40.4 4.5 | 100 4 | 51 10 | 0.8 0.6 | 6.9 4.7 | 1059 | W | 276 | 0.00 | 8.36 | 0.042 0.017 | 197 94 | 0 0 |
| Max | 61.9 | - | 42.3 | - | 44.0 | 100 | 66 | 3.0 | 11.0 | - | - | 0.37 | 15.32 | 0.057 | 266 | - | |
| Avg | - | - | - | - | 38.0 | - | - | 1.6 | - | - | - | - | - | - | - | - | |
| Min | 55.8 | - | 31.0 | - | -10.8 | 95 | 0 | 0.8 | 6.9 | - | - | 0.00 | 0.10 | 0.036 | 140 | - |