| 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) | 12/13/25 | 66.3 3.6 | 1318 | 43.5 1.5 | 2359 | 40.8 1.7 | 67 | 87 0 | 33 2 | 1.2 | 8.0 4.4 | 1728 | E | 86 | 0.00 | 9.81 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/13/25 | 65.7 9.8 | 1427 | 45.4 10.0 | 2319 | 32.1 1.9 | 42 | 75 18 | 26 8 | 4.6 | 14.5 0.2 | 1328 | SSE | 150 | 0.00 | 10.06 | 0.093 0.014 | 272 4 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/13/25 | 51.6 8.9 | 1425 | 32.0 2.6 | 2020 | -28.3 4.2 | - | - | - | 1.4 | 9.6 2.3 | 1406 | SSW | 206 | 0.00 | 7.74 | 0.038 0.007 | 196 19 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/13/25 | 50.4 8.4 | 1353 | 33.4 1.5 | 0744 | 39.4 2.3 | 96 | 100 0 | 82 15 | 2.9 | 11.1 1.9 | 1522 | NNW | 342 | 0.01 | 8.35 | 0.024 0.009 | 152 14 | 0 0 |
| Geyserville-North (Hoffman) | 12/13/25 | 46.7 6.6 | 1519 | 31.8 1.1 | 2056 | 33.1 6.2 | 96 | 97 1 | 95 20 | 1.3 | 8.9 0.9 | 1346 | SE | 125 | 0.00 | 0.00 | 0.020 0.010 | 121 44 | 0 0 |
| Geyserville (Ranch 3) | 12/13/25 | 46.2 6.9 | 1540 | 33.1 1.0 | 2105 | 38.7 1.5 | 99 | 100 0 | 85 11 | 1.8 | 9.3 0.2 | 1400 | ESE | 111 | 0.00 | 7.69 | 0.020 0.009 | 131 36 | 0 0 |
| Geyserville-East (Ranch 40) | 12/13/25 | 47.1 6.4 | 1618 | 32.9 1.6 | 0630 | 38.6 2.3 | 99 | 100 0 | 89 11 | 2.5 | 10.3 1.5 | 1327 | S | 188 | 0.01 | 8.00 | 0.019 0.012 | 141 51 | 0 0 |
| Geyserville-South (Nervo Station) | 12/13/25 | 46.3 7.5 | 1527 | 34.0 2.6 | 2321 | - | - | - | - | 1.0 | 7.1 1.0 | 1334 | WSW | 252 | 0.01 | 6.19 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/13/25 | 50.7 7.1 | 1559 | 33.5 0.2 | 1956 | 38.4 1.4 | 98 | 100 0 | 76 15 | 0.9 | 5.3 0.2 | 1328 | ESE | 103 | 0.01 | 7.82 | 0.014 0.006 | 87 32 | 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) | 12/13/25 | 52.8 5.2 | 1611 | 33.5 0.6 | 1944 | 38.2 1.8 | 96 | 100 0 | 68 7 | 1.3 | 6.4 0.4 | 1338 | SSW | 212 | 0.00 | 8.29 | 0.019 0.007 | 109 28 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/13/25 | 46.6 7.0 | 1604 | 34.0 0.6 | 1950 | 37.7 1.7 | 98 | 100 0 | 84 14 | 1.3 | 6.0 1.0 | 1342 | S | 178 | 0.01 | 8.35 | 0.015 0.004 | 92 16 | - |
| Knights Valley (Bavarian Lion) | 12/13/25 | 50.2 5.5 | 1512 | 33.9 1.5 | 2154 | 37.5 1.7 | 94 | 98 0 | 73 4 | 1.6 | 8.0 0.8 | 1311 | NNW | 344 | 0.01 | 8.57 | 0.032 0.003 | 196 0 | - |
| Upper Dry Creek Valley | 12/13/25 | 45.4 8.8 | 1323 | 32.0 1.6 | 2129 | 38.0 1.4 | 97 | 99 0 | 87 17 | 1.6 | 9.0 0.0 | 1353 | SE | 140 | 0.01 | 8.18 | 0.021 0.015 | 127 69 | - |
| Lower Dry Creek Valley | 12/13/25 | 48.5 4.4 | 1540 | 32.4 3.2 | 2014 | 38.4 1.9 | 99 | 100 0 | 78 10 | 1.9 | 8.5 2.3 | 1331 | SE | 131 | 0.01 | 8.49 | 0.016 0.015 | 100 70 | 0 0 |
| Max | 66.3 | - | 45.4 | - | 40.8 | 99 | 100 | 95 | 4.6 | 14.5 | - | - | 0.01 | 10.06 | 0.093 | 272 | - | |
| Avg | - | - | - | - | 32.5 | 90 | - | - | 1.8 | - | - | - | - | - | - | - | - | |
| Min | 45.4 | - | 31.8 | - | -28.3 | 42 | 75 | 26 | 0.9 | 5.3 | - | - | 0.00 | 0.00 | 0.014 | 87 | - |
| 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) | 12/13/25 | 50.1 6.2 | 1554 | 34.3 1.6 | 2031 | - | - | 100 0 | 75 12 | 0.4 | 6.5 0.6 | 1333 | 0.01 | 2.35 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/13/25 | 54.9 0.9 | 1607 | 35.9 2.4 | 2059 | 36.8 1.7 | 88 | 91 1 | 76 1 | 1.1 | 5.8 0.5 | 1413 | 0.01 | 8.78 | 0.019 0.005 | 111 23 | - |
| Windsor-East (Ranch 16) | 12/13/25 | 55.5 2.5 | 1607 | 32.5 0.9 | 2114 | 38.7 1.4 | 95 | 100 0 | 63 3 | 1.3 | 6.7 0.6 | 1329 | 0.00 | 6.50 | 0.025 0.004 | 141 13 | 0 |
| Mark West-North (Ranch 14) | 12/13/25 | 53.5 3.6 | 1446 | 35.4 1.2 | 2057 | 38.8 1.1 | 93 | 99 0 | 64 6 | 0.8 | 6.1 1.2 | 1324 | 0.00 | 7.49 | 0.002 0.001 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/13/25 | 50.7 2.6 | 1601 | 35.2 1.1 | 1944 | 39.2 1.1 | 97 | 100 0 | 76 3 | 1.1 | 5.9 0.7 | 2232 | 0.01 | 1.88 | 0.020 0.003 | 117 17 | 0 |
| Fulton-NW (Ranch 5) | 12/13/25 | 52.0 3.4 | 1548 | 33.4 0.4 | 2101 | -12.2 0.8 | 29 | 100 0 | 3 0 | 1.1 | 6.3 0.2 | 1252 | 0.01 | 7.59 | 0.029 0.003 | 105 17 | 0 |
| Windsor-South (Laughlin Rd) | 12/13/25 | 53.1 4.1 | 1529 | 35.0 2.5 | 2127 | -28.9 0.7 | 27 | 100 0 | 0 0 | - | - | - | 0.01 | 7.12 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/13/25 | 52.0 3.5 | 1612 | 34.4 2.2 | 2108 | 39.0 1.4 | 92 | 98 0 | 69 2 | 1.3 | 7.7 0.9 | 1251 | 0.00 | 7.08 | - | - | - |
| Fulton-SW (Ranch 21) | 12/13/25 | 51.3 3.6 | 1536 | 33.7 4.0 | 2047 | -37.4 3.1 | 25 | 100 0 | 0 0 | 1.2 | 5.7 1.0 | 2203 | 0.00 | 7.46 | 0.031 0.007 | 145 18 | - |
| Santa Rosa-NW (Goldfields) | 12/13/25 | 55.1 2.8 | 1439 | 34.5 4.5 | 2106 | 39.8 1.5 | 95 | 100 0 | 64 4 | 1.3 | 5.6 1.4 | 1321 | 0.01 | 7.75 | 0.018 0.005 | 98 18 | - |
| Goldfields Remote | 12/13/25 | 51.8 4.0 | 1543 | 33.6 3.4 | 2106 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/13/25 | 52.4 3.3 | 1528 | 34.4 2.9 | 2104 | 40.2 1.5 | 98 | 100 0 | 76 3 | 1.0 | 4.4 3.2 | 1151 | 0.01 | 6.02 | - | - | - |
| River Rd South (Denner Ranch) | 12/13/25 | 55.5 2.2 | 1515 | 34.0 4.3 | 2115 | 40.2 1.4 | 96 | 100 0 | 66 0 | 1.7 | 6.1 2.4 | 1133 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/13/25 | 54.3 3.1 | 1533 | 35.7 2.6 | 2059 | 39.9 1.5 | 95 | 100 0 | 65 2 | 0.8 | 5.3 1.0 | 1159 | 0.01 | 8.12 | 0.002 0.001 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/13/25 | 52.7 3.5 | 1436 | 35.8 3.5 | 2058 | 40.3 1.5 | 95 | 100 0 | 68 1 | - | - | - | 0.00 | 7.16 | - | - | - |
| Guerneville Rd West (Balletto) | 12/13/25 | 52.5 1.9 | 1509 | 33.4 2.5 | 2052 | 40.1 1.7 | 96 | 100 0 | 74 0 | 1.4 | 5.7 1.7 | 1525 | 0.00 | 5.84 | - | - | - |
| Sanchietti Ranch | 12/13/25 | 52.2 2.1 | 1454 | 37.2 2.6 | 1959 | 41.6 1.5 | - | 100 0 | 80 1 | 2.0 | 6.9 2.4 | 1242 | 0.00 | 6.97 | - | - | - |
| Occidental Rd (Sebastopol) | 12/13/25 | 53.5 1.6 | 1443 | 36.8 0.8 | 1939 | 41.4 1.4 | 99 | 100 0 | 69 10 | 1.4 | 7.0 0.7 | 1259 | 0.00 | 5.80 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/13/25 | 52.3 2.4 | 1543 | 35.6 1.1 | 1901 | 39.3 1.2 | 98 | 100 0 | 73 4 | 0.8 | 4.9 1.8 | 1319 | 0.01 | 8.46 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/13/25 | 46.7 3.6 | 1440 | 38.3 0.9 | 1719 | 39.7 1.2 | 96 | 98 0 | 85 7 | 1.1 | 5.1 0.4 | 1326 | 0.01 | 9.29 | - | - | - |
| Korbel (Winery) | 12/13/25 | 48.0 2.1 | 1453 | 38.1 0.8 | 0757 | 40.2 1.0 | 97 | 100 0 | 80 0 | 1.6 | 7.2 1.1 | 1335 | 0.00 | 9.43 | - | - | - |
| Forestville (Shone Farms) | 12/13/25 | 52.4 2.9 | 1558 | 34.6 1.9 | 2114 | 39.2 1.2 | 96 | 98 0 | 76 5 | 1.3 | 6.2 0.3 | 1034 | 0.01 | 9.20 | 0.017 0.005 | 89 31 | 0 |
| Forestville-NE (Ranch 30) | 12/13/25 | 52.3 4.1 | 1536 | 36.8 0.7 | 0721 | 39.4 1.0 | 99 | 100 0 | 81 8 | 1.4 | 6.3 1.4 | 0417 | 0.01 | 8.64 | 0.016 0.004 | 99 20 | - |
| Green Valley Vineyard | 12/13/25 | 52.4 1.4 | 1537 | 36.6 0.7 | 2228 | 39.8 0.9 | 96 | 99 0 | 73 0 | 1.3 | 6.4 0.7 | 1250 | 0.02 | 9.95 | 0.009 0.003 | 52 5 | - |
| Green Valley (Sanchietti) | 12/13/25 | 54.5 3.4 | 1517 | 37.6 1.4 | 2117 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/13/25 | 52.3 2.7 | 1550 | 36.4 0.4 | 2004 | 40.7 0.8 | 98 | 100 0 | 79 4 | - | - | - | 0.01 | 8.60 | - | - | - |
| Graton-South (Mill Station Rd) | 12/13/25 | 53.7 0.2 | 1423 | 34.8 2.2 | 2020 | 39.7 1.8 | 94 | 100 0 | 66 5 | 0.3 | 4.1 0.7 | 1213 | 0.00 | 8.34 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/13/25 | 52.1 0.2 | 1535 | 37.0 0.1 | 0830 | 40.6 0.2 | - | 100 0 | 77 2 | - | - | - | 0.01 | 8.41 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/13/25 | 52.2 0.9 | 1530 | 34.5 1.2 | 2010 | 39.8 1.5 | 96 | 100 0 | 75 0 | 1.8 | 7.2 1.1 | 0001 | 0.00 | 6.98 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/13/25 | 50.8 2.1 | 1527 | 35.7 2.9 | 2253 | 40.1 1.3 | 97 | 100 0 | 78 1 | 0.4 | 5.0 0.7 | 1451 | 0.00 | 7.41 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/13/25 | 66.3 5.0 | 1317 | 45.0 13.0 | 2132 | 37.3 4.4 | 57 | 95 50 | 22 6 | 4.0 | 12.8 6.2 | 1937 | 0.00 | 13.08 | 0.077 0.007 | 242 6 | - |
| Max | 66.3 | - | 45.0 | - | 41.6 | 99 | 100 | 85 | 4.0 | 12.8 | - | 0.02 | 13.08 | 0.077 | 242 | - | |
| Avg | - | - | - | - | 32.6 | 86 | - | - | 1.3 | - | - | - | - | - | - | - | |
| Min | 46.7 | - | 32.5 | - | -37.4 | 25 | 91 | 0 | 0.3 | 4.1 | - | 0.00 | 1.88 | 0.002 | 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 | 12/13/25 | 50.5 4.8 | 1559 | 32.7 0.0 | 0713 | 37.6 0.9 | 98 0 | 73 7 | 1.2 0.2 | 6.8 1.7 | 1715 | NNE | 31 | 0.00 | 5.39 | 0.030 0.014 | 186 68 | - |
| Lower Bennett Valley | 12/13/25 | 52.4 2.2 | 1531 | 30.9 1.0 | 2111 | 37.4 1.1 | 100 0 | 73 2 | 1.3 0.2 | 7.1 0.4 | 1357 | SSE | 167 | 0.01 | 6.54 | 0.023 0.009 | 136 40 | 0 0 |
| Kenwood (Wildwood) | 12/13/25 | 50.4 1.8 | 1430 | 36.5 1.7 | 1929 | 39.4 1.4 | 100 0 | 75 2 | 1.7 0.4 | 7.4 2.0 | 1244 | S | 176 | 0.01 | 6.90 | 0.020 0.002 | 112 10 | - |
| Sonoma Valley (Bedrock) | 12/13/25 | 50.6 0.9 | 1404 | 34.8 2.9 | 1919 | 38.1 1.7 | 99 0 | 68 2 | - | - | - | - | 0.00 | 6.71 | - | - | - |
| Sonoma-West (Arnold) | 12/13/25 | 52.0 0.5 | 1426 | 33.8 5.8 | 1909 | 39.7 1.7 | 100 0 | 65 3 | 1.6 0.1 | 8.3 1.4 | 1127 | SSW | 201 | 0.00 | 4.40 | 0.033 0.005 | 174 20 | - |
| Sonoma Valley HS | 12/13/25 | 49.8 1.3 | 1408 | 38.2 1.3 | 0759 | 40.6 1.2 | 100 0 | 76 1 | 1.3 0.2 | 5.6 3.4 | 1618 | SE | 128 | 0.00 | 4.67 | 0.026 0.002 | 148 11 | - |
| Sonoma East (Bundschu01) | 12/13/25 | 49.6 4.9 | 1402 | 37.0 1.2 | 1752 | 39.3 1.3 | 98 0 | 71 6 | 2.0 0.2 | 9.0 1.8 | 1438 | ESE | 122 | 0.00 | 0.13 | 0.027 0.005 | 150 23 | - |
| 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) | 12/13/25 | 49.7 5.1 | 1307 | 37.6 0.7 | 1914 | 39.3 1.4 | 97 0 | 72 7 | 1.3 0.2 | 8.1 2.7 | 1350 | SSE | 159 | 0.00 | 4.46 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/13/25 | 49.0 2.4 | 1306 | 35.7 2.3 | 1820 | 39.2 1.4 | 97 0 | 71 1 | 2.4 0.6 | 10.6 4.3 | 1411 | ESE | 111 | 0.00 | 4.89 | 0.032 0.006 | 184 26 | - |
| Carneros (Ranch 71) | 12/13/25 | 47.9 4.4 | 1454 | 36.6 2.2 | 0707 | 39.7 1.4 | 100 0 | 79 7 | 2.0 0.2 | 8.0 2.8 | 1232 | E | 89 | 0.00 | 4.48 | 0.024 0.008 | 152 34 | 0 0 |
| Carneros Upper (Ranch 81) | 12/13/25 | 48.8 3.9 | 1516 | 36.3 2.7 | 0739 | 29.3 6.4 | - | - | 2.9 0.6 | 12.1 2.0 | 1245 | S | 176 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/13/25 | 47.6 6.0 | 1438 | 37.0 1.4 | 1813 | 39.5 1.5 | 100 0 | 79 12 | 1.6 0.3 | 10.8 0.4 | 1243 | SSE | 161 | 0.00 | 4.76 | 0.020 0.008 | 99 34 | - |
| Rohnert Park-West (Stony Point) | 12/13/25 | 50.4 0.9 | 1501 | 38.0 2.3 | 1915 | 40.5 1.5 | 100 0 | 78 1 | 3.4 1.3 | 11.2 3.7 | 0001 | ESE | 102 | 0.00 | 1.56 | - | - | - |
| Cartograph Wines Base | 12/13/25 | 50.4 0.6 | 1422 | 37.9 2.0 | 2026 | 40.7 1.2 | 100 0 | 82 1 | 3.4 1.0 | 14.9 1.3 | 0741 | ENE | 69 | 0.00 | 6.66 | 0.028 0.002 | 171 14 | - |
| Cartograph Wines Remote | 12/13/25 | 48.9 1.7 | 1311 | 34.2 5.9 | 1943 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/13/25 | 52.1 0.1 | 1438 | 33.7 6.1 | 1854 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/13/25 | 48.9 1.6 | 1453 | 37.4 2.4 | 1852 | 39.1 1.7 | 98 0 | 74 1 | 5.2 1.7 | 14.0 1.4 | 0742 | ESE | 113 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/13/25 | 48.3 1.0 | 1413 | 36.4 1.8 | 2233 | 39.0 1.5 | 100 0 | 76 2 | 5.1 0.5 | 13.2 1.5 | 0827 | ENE | 72 | 0.01 | 5.82 | 0.025 0.001 | 164 4 | 0 0 |
| Petaluma (Ranch 10) | 12/13/25 | 51.0 2.1 | 1256 | 35.8 4.9 | 1847 | 39.4 1.6 | 98 2 | 69 1 | 2.6 1.2 | 7.8 0.1 | 0717 | ESE | 122 | 0.00 | 4.29 | 0.028 0.002 | 150 7 | 0 0 |
| Max | 52.4 | - | 38.2 | - | 40.7 | 100 | 82 | 5.2 | 14.9 | - | - | 0.01 | 6.90 | 0.033 | 186 | - | |
| Avg | - | - | - | - | 38.7 | - | - | 2.4 | - | - | - | - | - | - | - | - | |
| Min | 47.6 | - | 30.9 | - | 29.3 | 97 | 65 | 1.2 | 5.6 | - | - | 0.00 | 0.10 | 0.020 | 99 | - |