| 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) | 12/12/25 | 69.9 8.0 | 1410 | 45.0 6.8 | 0639 | 42.5 3.0 | 63 | 86 12 | 35 14 | 0.6 | 3.6 7.7 | 0032 | NNW | 346 | 0.00 | 9.81 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/12/25 | 75.5 3.0 | 1410 | 55.4 3.1 | 2244 | 34.0 1.4 | 33 | 57 9 | 18 3 | 2.3 | 14.2 7.4 | 0013 | N | 351 | 0.00 | 10.06 | 0.079 0.065 | 276 3 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/12/25 | 60.5 1.2 | 1423 | 34.6 0.4 | 0734 | -24.1 | - | - | - | 1.2 | 7.3 1.4 | 1410 | SW | 224 | 0.01 | 7.74 | 0.045 0.002 | 215 15 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/12/25 | 58.8 2.4 | 1351 | 34.9 1.5 | 0738 | 41.7 1.2 | 93 | 100 0 | 66 0 | 2.4 | 9.2 0.8 | 1411 | ESE | 102 | 0.01 | 8.34 | 0.033 0.002 | 166 8 | 0 0 |
| Geyserville-North (Hoffman) | 12/12/25 | 53.3 2.6 | 1447 | 32.9 3.1 | 2116 | 39.4 1.7 | 94 | 98 0 | 75 2 | 1.6 | 8.1 1.2 | 1400 | SE | 143 | 0.00 | 0.00 | 0.030 0.002 | 165 17 | 0 0 |
| Geyserville (Ranch 3) | 12/12/25 | 53.0 2.2 | 1452 | 34.2 2.1 | 2111 | 40.2 1.6 | 97 | 100 0 | 74 2 | 1.5 | 9.5 2.2 | 1406 | ESE | 118 | 0.05 | 7.69 | 0.029 0.004 | 167 30 | 0 0 |
| Geyserville-East (Ranch 40) | 12/12/25 | 53.5 2.0 | 1550 | 34.5 1.6 | 0802 | 40.8 1.5 | 96 | 100 0 | 79 0 | 2.0 | 8.8 0.7 | 1413 | SSW | 193 | 0.01 | 7.99 | 0.031 0.001 | 193 7 | 0 0 |
| Geyserville-South (Nervo Station) | 12/12/25 | 53.8 1.8 | 1516 | 36.6 2.6 | 0820 | - | - | - | - | 1.1 | 8.1 2.7 | 1335 | ESE | 105 | 0.02 | 6.18 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/12/25 | 57.9 3.4 | 1546 | 33.7 2.4 | 2106 | 39.8 1.7 | 95 | 100 0 | 62 1 | 0.8 | 5.0 0.7 | 2009 | NE | 40 | 0.01 | 7.81 | 0.020 0.002 | 119 5 | 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) | 12/12/25 | 58.1 1.8 | 1508 | 32.8 1.8 | 2055 | 40.0 1.1 | 94 | 100 0 | 62 1 | 1.1 | 6.0 0.9 | 1306 | SW | 228 | 0.00 | 8.29 | 0.026 0.004 | 138 13 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/12/25 | 53.7 3.8 | 1544 | 33.4 2.4 | 2050 | 39.4 1.5 | 96 | 100 0 | 70 3 | 1.0 | 5.0 0.4 | 0318 | S | 174 | 0.01 | 8.34 | 0.019 0.006 | 108 25 | - |
| Knights Valley (Bavarian Lion) | 12/12/25 | 55.7 7.4 | 1415 | 32.4 1.0 | 2153 | 39.2 1.6 | 93 | 98 0 | 68 15 | 1.6 | 8.8 1.4 | 0322 | SSE | 150 | 0.00 | 8.56 | 0.035 0.003 | 196 2 | - |
| Upper Dry Creek Valley | 12/12/25 | 54.1 2.0 | 1333 | 33.6 2.4 | 2112 | 39.4 1.1 | 94 | 99 0 | 70 1 | 1.5 | 9.0 1.7 | 1400 | SE | 126 | 0.00 | 8.17 | 0.036 0.001 | 196 0 | - |
| Lower Dry Creek Valley | 12/12/25 | 52.9 2.1 | 1554 | 35.6 0.5 | 1936 | 40.2 1.4 | 96 | 100 0 | 68 2 | 1.9 | 10.7 2.8 | 1323 | SE | 132 | 0.01 | 8.48 | 0.031 0.001 | 171 3 | 0 0 |
| Max | 75.5 | - | 55.4 | - | 42.5 | 97 | 100 | 79 | 2.4 | 14.2 | - | - | 0.05 | 10.06 | 0.079 | 276 | - | |
| Avg | - | - | - | - | 34.8 | 87 | - | - | 1.5 | - | - | - | - | - | - | - | - | |
| Min | 52.9 | - | 32.4 | - | -24.1 | 33 | 57 | 18 | 0.6 | 3.6 | - | - | 0.00 | 0.00 | 0.019 | 108 | - |
| 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) | 12/12/25 | 56.3 0.6 | 1543 | 36.0 0.6 | 2046 | - | - | 100 0 | 64 4 | 0.5 | 7.1 0.6 | 1255 | 0.01 | 2.34 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/12/25 | 55.8 3.2 | 1627 | 38.4 0.3 | 0758 | 38.5 1.7 | 87 | 90 0 | 75 4 | 1.0 | 5.3 0.7 | 1241 | 0.02 | 8.77 | 0.024 0.003 | 134 13 | - |
| Windsor-East (Ranch 16) | 12/12/25 | 58.1 3.6 | 1523 | 33.3 1.0 | 2034 | 40.1 1.1 | 94 | 100 0 | 61 4 | 1.4 | 7.3 2.1 | 1327 | 0.00 | 6.50 | 0.029 0.002 | 154 8 | 0 |
| Mark West-North (Ranch 14) | 12/12/25 | 57.2 1.8 | 1438 | 36.5 0.7 | 2023 | 39.9 1.3 | 92 | 99 0 | 57 2 | 0.8 | 4.9 0.4 | 1246 | 0.00 | 7.49 | 0.003 0.001 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/12/25 | 53.3 3.9 | 1435 | 34.0 0.0 | 2015 | 40.4 1.1 | 96 | 100 0 | 73 7 | 1.3 | 5.1 1.2 | 0627 | 0.00 | 1.87 | 0.023 0.002 | 134 4 | 0 |
| Fulton-NW (Ranch 5) | 12/12/25 | 55.4 0.7 | 1541 | 33.8 0.4 | 2007 | -11.4 7.9 | 28 | 100 0 | 3 0 | 1.2 | 6.0 0.7 | 1339 | 0.00 | 7.58 | 0.032 0.001 | 123 4 | 0 |
| Windsor-South (Laughlin Rd) | 12/12/25 | 57.2 0.9 | 1528 | 37.5 1.3 | 0714 | -28.1 6.6 | 25 | 100 0 | 0 0 | - | - | - | 0.01 | 7.11 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/12/25 | 55.5 1.9 | 1503 | 36.6 0.1 | 2014 | 40.4 1.4 | 91 | 98 0 | 67 0 | 1.2 | 6.8 0.4 | 1254 | 0.00 | 7.08 | - | - | - |
| Fulton-SW (Ranch 21) | 12/12/25 | 55.0 1.5 | 1517 | 37.7 1.0 | 1925 | -40.5 13.5 | 22 | 100 0 | 0 0 | 1.5 | 6.6 0.8 | 1131 | 0.01 | 7.46 | 0.038 0.002 | 164 13 | - |
| Santa Rosa-NW (Goldfields) | 12/12/25 | 57.9 0.4 | 1402 | 39.0 3.2 | 0648 | 41.4 1.0 | 94 | 100 0 | 60 5 | 1.7 | 7.0 0.5 | 1554 | 0.01 | 7.74 | 0.023 0.002 | 116 12 | - |
| Goldfields Remote | 12/12/25 | 55.8 0.9 | 1453 | 37.0 2.2 | 1931 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/12/25 | 55.7 1.2 | 1506 | 37.3 2.8 | 1947 | 41.6 1.1 | 97 | 100 0 | 73 1 | 1.1 | 7.7 1.4 | 1551 | 0.00 | 6.01 | - | - | - |
| River Rd South (Denner Ranch) | 12/12/25 | 57.7 1.0 | 1524 | 38.4 0.8 | 1946 | 41.6 1.1 | 97 | 100 0 | 66 3 | 2.3 | 8.6 1.1 | 1601 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/12/25 | 57.4 0.7 | 1442 | 38.3 1.0 | 1938 | 41.4 0.9 | 95 | 100 0 | 63 1 | 1.2 | 6.3 0.1 | 1558 | 0.00 | 8.11 | 0.003 0.000 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/12/25 | 56.2 1.8 | 1503 | 39.2 0.9 | 0813 | 41.8 0.9 | 95 | 100 0 | 67 2 | - | - | - | 0.01 | 7.16 | - | - | - |
| Guerneville Rd West (Balletto) | 12/12/25 | 54.4 2.3 | 1452 | 35.9 0.8 | 1928 | 41.8 0.6 | 96 | 100 0 | 74 1 | 1.7 | 7.4 1.7 | 1551 | 0.01 | 5.84 | - | - | - |
| Sanchietti Ranch | 12/12/25 | 54.3 1.5 | 1405 | 39.8 0.3 | 1907 | 43.2 0.8 | - | 100 0 | 79 0 | 2.5 | 9.4 1.9 | 1239 | 0.00 | 6.97 | - | - | - |
| Occidental Rd (Sebastopol) | 12/12/25 | 55.1 1.9 | 1415 | 37.6 0.4 | 1907 | 42.8 0.7 | 100 | 100 0 | 59 4 | 1.4 | 7.7 1.8 | 1244 | 0.00 | 5.80 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/12/25 | 54.7 1.8 | 1511 | 36.8 1.1 | 2013 | 40.6 1.5 | 97 | 100 0 | 69 2 | 1.0 | 6.6 0.5 | 1028 | 0.01 | 8.45 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/12/25 | 50.3 3.5 | 1440 | 39.2 1.7 | 0834 | 40.9 2.2 | 96 | 98 0 | 78 5 | 1.0 | 4.7 0.3 | 0141 | 0.00 | 9.28 | - | - | - |
| Korbel (Winery) | 12/12/25 | 50.0 2.3 | 1458 | 38.8 2.8 | 0747 | 41.2 2.0 | 97 | 100 0 | 80 2 | 1.8 | 6.1 0.1 | 0531 | 0.00 | 9.43 | - | - | - |
| Forestville (Shone Farms) | 12/12/25 | 55.3 2.0 | 1529 | 36.6 0.7 | 0717 | 40.4 1.6 | 95 | 99 0 | 71 1 | 1.4 | 5.9 0.9 | 2032 | 0.01 | 9.19 | 0.022 0.002 | 120 6 | 0 |
| Forestville-NE (Ranch 30) | 12/12/25 | 56.4 4.2 | 1519 | 36.1 2.3 | 2020 | 40.4 1.8 | 98 | 100 0 | 73 8 | 1.5 | 7.7 0.5 | 1056 | 0.01 | 8.63 | 0.020 0.006 | 119 24 | - |
| Green Valley Vineyard | 12/12/25 | 53.7 1.6 | 1506 | 37.3 0.2 | 1959 | 40.8 1.2 | 96 | 99 0 | 73 2 | 1.2 | 5.7 0.7 | 0306 | 0.01 | 9.93 | 0.012 0.002 | 57 15 | - |
| Green Valley (Sanchietti) | 12/12/25 | 57.9 0.6 | 1520 | 36.2 0.2 | 1955 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/12/25 | 55.0 1.8 | 1534 | 36.1 1.6 | 1955 | 41.4 0.6 | 97 | 100 0 | 75 1 | - | - | - | 0.00 | 8.59 | - | - | - |
| Graton-South (Mill Station Rd) | 12/12/25 | 53.8 2.6 | 1456 | 37.0 1.6 | 1909 | 41.5 0.4 | 95 | 100 0 | 71 3 | 0.4 | 4.7 0.6 | 1414 | 0.00 | 8.34 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/12/25 | 52.4 2.8 | 1532 | 36.8 2.2 | 2148 | 40.8 1.9 | - | 100 0 | 79 3 | - | - | - | 0.00 | 8.40 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/12/25 | 53.1 2.5 | 1536 | 35.6 1.1 | 1940 | 41.4 0.6 | 95 | 100 0 | 75 2 | 2.3 | 8.3 0.8 | 0353 | 0.00 | 6.98 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/12/25 | 53.0 1.6 | 1449 | 38.7 1.4 | 0851 | 41.4 1.2 | 97 | 100 0 | 77 1 | 0.3 | 4.4 1.0 | 1427 | 0.01 | 7.41 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/12/25 | 71.3 2.5 | 1026 | 58.0 3.4 | 2353 | 32.9 1.0 | 30 | 46 4 | 17 6 | 1.8 | 6.6 5.9 | 0409 | 0.00 | 13.08 | 0.070 0.022 | 248 2 | - |
| Max | 71.3 | - | 58.0 | - | 43.2 | 100 | 100 | 80 | 2.5 | 9.4 | - | 0.02 | 13.08 | 0.070 | 248 | - | |
| Avg | - | - | - | - | 33.5 | 85 | - | - | 1.3 | - | - | - | - | - | - | - | |
| Min | 50.0 | - | 33.3 | - | -40.5 | 22 | 46 | 0 | 0.3 | 4.4 | - | 0.00 | 1.87 | 0.003 | 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 | 12/12/25 | 55.3 4.6 | 1517 | 32.7 1.6 | 0702 | 38.5 2.2 | 98 0 | 66 6 | 1.0 0.1 | 5.1 1.3 | 1316 | SSE | 154 | 0.00 | 5.39 | 0.044 0.006 | 254 10 | - |
| Lower Bennett Valley | 12/12/25 | 54.6 4.5 | 1511 | 29.9 0.6 | 1952 | 38.5 1.2 | 100 0 | 70 1 | 1.2 0.2 | 7.5 2.2 | 1414 | SSE | 154 | 0.00 | 6.53 | 0.032 0.003 | 175 4 | 0 0 |
| Kenwood (Wildwood) | 12/12/25 | 52.3 0.5 | 1418 | 38.2 0.4 | 0813 | 40.8 1.1 | 100 0 | 73 6 | 2.2 0.3 | 9.4 2.4 | 1314 | S | 174 | 0.01 | 6.89 | 0.022 0.003 | 121 15 | - |
| Sonoma Valley (Bedrock) | 12/12/25 | 51.4 1.9 | 1325 | 37.7 0.4 | 0738 | 39.8 1.0 | 99 0 | 70 1 | - | - | - | - | 0.00 | 6.71 | - | - | - |
| Sonoma-West (Arnold) | 12/12/25 | 52.5 2.9 | 1400 | 39.6 1.5 | 1738 | 41.3 1.2 | 100 0 | 68 3 | 1.7 0.3 | 9.7 2.1 | 1320 | SSE | 157 | 0.00 | 4.40 | 0.038 0.004 | 194 23 | - |
| Sonoma Valley HS | 12/12/25 | 51.2 2.1 | 1404 | 39.5 0.7 | 0820 | 41.8 1.2 | 100 0 | 77 1 | 1.6 0.1 | 8.9 2.9 | 1320 | SSE | 149 | 0.01 | 4.67 | 0.028 0.001 | 159 13 | - |
| Sonoma East (Bundschu01) | 12/12/25 | 54.6 1.0 | 1432 | 38.3 0.9 | 1759 | 40.6 1.0 | 98 0 | 64 2 | 2.2 0.1 | 10.7 3.3 | 1509 | S | 174 | 0.00 | 0.13 | 0.032 0.001 | 173 12 | - |
| 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) | 12/12/25 | 54.8 2.2 | 1416 | 38.4 1.1 | 1759 | 40.7 1.0 | 97 1 | 65 0 | 1.4 0.4 | 10.8 2.7 | 1519 | SE | 129 | 0.00 | 4.46 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/12/25 | 51.5 2.2 | 1355 | 38.0 0.3 | 1827 | 40.6 1.3 | 97 0 | 70 1 | 3.1 0.7 | 14.9 4.6 | 1124 | ESE | 122 | 0.00 | 4.89 | 0.038 0.002 | 211 22 | - |
| Carneros (Ranch 71) | 12/12/25 | 52.3 0.5 | 1356 | 38.8 1.7 | 0337 | 41.1 1.2 | 100 0 | 72 2 | 2.2 0.0 | 10.8 3.2 | 1514 | SE | 140 | 0.00 | 4.48 | 0.032 0.005 | 185 33 | 0 0 |
| Carneros Upper (Ranch 81) | 12/12/25 | 52.7 0.0 | 1324 | 39.0 1.8 | 0328 | 35.7 13.4 | - | - | 3.4 0.3 | 14.1 4.2 | 1441 | S | 182 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/12/25 | 53.6 0.6 | 1331 | 38.4 3.3 | 1846 | 41.0 0.7 | 100 0 | 67 5 | 1.3 0.1 | 10.4 1.8 | 1513 | SSE | 159 | 0.00 | 4.76 | 0.028 0.004 | 133 22 | - |
| Rohnert Park-West (Stony Point) | 12/12/25 | 51.4 2.5 | 1343 | 40.3 6.1 | 0722 | 42.0 0.7 | 100 0 | 79 3 | 4.7 0.4 | 14.9 1.5 | 0152 | ESE | 118 | 0.00 | 1.56 | - | - | - |
| Cartograph Wines Base | 12/12/25 | 50.9 2.6 | 1338 | 39.8 1.2 | 0623 | 41.9 1.3 | 100 0 | 83 2 | 4.4 0.3 | 13.6 1.7 | 0202 | E | 81 | 0.00 | 6.66 | 0.030 0.001 | 184 6 | - |
| Cartograph Wines Remote | 12/12/25 | 50.5 1.5 | 1242 | 40.2 2.8 | 1834 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/12/25 | 52.2 2.5 | 1329 | 39.7 4.2 | 1833 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/12/25 | 50.5 2.3 | 1256 | 39.9 0.8 | 0655 | 40.8 1.0 | 98 0 | 73 2 | 6.9 0.3 | 15.3 0.6 | 0240 | ESE | 106 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/12/25 | 49.3 0.8 | 1336 | 38.2 1.5 | 0616 | 40.4 1.3 | 100 0 | 78 3 | 5.6 0.6 | 14.8 2.6 | 1134 | E | 101 | 0.00 | 5.81 | 0.026 0.000 | 168 7 | 0 0 |
| Petaluma (Ranch 10) | 12/12/25 | 53.0 1.2 | 1241 | 40.7 2.1 | 1803 | 40.9 0.8 | 96 1 | 68 2 | 3.8 0.9 | 7.7 0.4 | 0950 | SE | 124 | 0.00 | 4.29 | 0.030 0.002 | 158 1 | 0 0 |
| Max | 55.3 | - | 40.7 | - | 42.0 | 100 | 83 | 6.9 | 15.3 | - | - | 0.01 | 6.89 | 0.044 | 254 | - | |
| Avg | - | - | - | - | 40.4 | - | - | 2.9 | - | - | - | - | - | - | - | - | |
| Min | 49.3 | - | 29.9 | - | 35.7 | 96 | 64 | 1.0 | 5.1 | - | - | 0.00 | 0.10 | 0.022 | 121 | - |