| 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) | 1/21/26 | 66.3 0.4 | 1358 | 46.2 1.8 | 0724 | 40.3 0.3 | 60 | 87 2 | 29 7 | 2.0 | 8.6 4.3 | 2013 | NNE | 13 | 0.00 | 28.82 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 1/21/26 | 62.9 2.6 | 1413 | 49.6 3.4 | 2353 | 33.8 0.1 | 45 | 75 5 | 28 3 | 3.9 | 16.7 5.7 | 2140 | NNW | 339 | 0.00 | 29.56 | 0.069 0.002 | 174 48 | 0 0 |
| Cloverdale-East (Ranch 83) | 1/21/26 | 67.2 1.6 | 1338 | 40.3 2.4 | 0705 | 6.8 33.9 | - | - | - | 2.1 | 12.7 3.5 | 1011 | NNW | 348 | 0.00 | 25.01 | 0.046 0.001 | 155 27 | 0 0 |
| Cloverdale-SE (Ranch 38) | 1/21/26 | 66.3 2.9 | 1409 | 43.6 0.7 | 0748 | 44.5 0.5 | 77 | 95 2 | 35 10 | 3.4 | 15.7 4.6 | 1036 | ENE | 58 | 0.00 | 26.49 | 0.047 0.002 | 161 20 | 0 0 |
| Geyserville-North (Hoffman) | 1/21/26 | 64.2 6.6 | 1430 | 40.4 4.0 | 0611 | 45.0 2.6 | 86 | 97 0 | 47 22 | 2.0 | 11.6 4.5 | 2150 | ESE | 122 | 0.00 | 25.50 | 0.039 0.002 | 147 14 | 0 0 |
| Geyserville (Ranch 3) | 1/21/26 | 63.4 6.4 | 1427 | 41.1 3.8 | 0732 | 45.4 2.0 | 87 | 100 0 | 51 16 | 2.0 | 15.5 7.8 | 2145 | ESE | 104 | 0.00 | 25.44 | 0.039 0.001 | 161 15 | 0 0 |
| Geyserville-East (Ranch 40) | 1/21/26 | 64.6 7.5 | 1339 | 41.6 0.3 | 0724 | 46.2 1.0 | 86 | 100 1 | 54 11 | 3.6 | 15.6 2.6 | 1759 | S | 177 | 0.00 | 25.86 | 0.044 0.003 | 184 20 | 0 0 |
| Geyserville-South (Nervo Station) | 1/21/26 | 61.8 4.9 | 1451 | 42.1 2.8 | 0745 | - | - | - | - | 1.6 | 9.8 2.0 | 2327 | W | 272 | 0.01 | 19.39 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 1/21/26 | 64.1 6.3 | 1417 | 40.2 5.3 | 0532 | 44.7 2.7 | 88 | 100 0 | 49 15 | 1.4 | 8.3 2.0 | 0712 | SSW | 202 | 0.00 | 23.63 | 0.034 0.002 | 151 2 | 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) | 1/21/26 | 65.0 6.9 | 1424 | 39.0 4.1 | 0609 | 44.9 2.9 | 88 | 100 0 | 50 13 | 1.6 | 10.2 3.4 | 0702 | NE | 38 | 0.00 | 22.79 | 0.035 0.000 | 142 14 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 1/21/26 | 62.5 5.6 | 1457 | 38.5 4.3 | 0624 | 44.0 2.5 | 88 | 100 0 | 54 13 | 1.1 | 7.8 0.8 | 1053 | ESE | 121 | 0.00 | 24.15 | 0.034 0.001 | 147 11 | - |
| Knights Valley (Bavarian Lion) | 1/21/26 | 63.0 2.5 | 1312 | 38.6 4.2 | 0628 | 43.8 2.1 | 85 | 98 0 | 50 8 | 2.0 | 9.1 0.5 | 2134 | SSE | 149 | 0.00 | 22.63 | 0.041 0.002 | 173 31 | - |
| Upper Dry Creek Valley | 1/21/26 | 64.7 7.5 | 1332 | 40.7 3.0 | 0631 | 45.0 1.9 | 86 | 98 0 | 47 20 | 1.8 | 14.1 5.0 | 2149 | SE | 139 | 0.00 | 27.46 | 0.041 0.001 | 169 19 | - |
| Lower Dry Creek Valley | 1/21/26 | 65.7 11.2 | 1330 | 41.5 3.7 | 0031 | 45.4 2.2 | 88 | 100 0 | 46 28 | 2.0 | 11.7 2.0 | 2135 | SE | 140 | 0.00 | 27.06 | 0.039 0.006 | 162 5 | 0 0 |
| Max | 67.2 | - | 49.6 | - | 46.2 | 88 | 100 | 54 | 3.9 | 16.7 | - | - | 0.01 | 29.56 | 0.069 | 184 | - | |
| Avg | - | - | - | - | 40.8 | 80 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 61.8 | - | 38.5 | - | 6.8 | 45 | 75 | 28 | 1.1 | 7.8 | - | - | 0.00 | 19.39 | 0.034 | 142 | - |
| 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) | 1/21/26 | 63.2 8.8 | 1416 | 41.1 2.5 | 0650 | - | - | 100 0 | 51 24 | 1.1 | 9.3 2.8 | 2050 | 0.00 | 19.43 | - | - | 0 |
| Windsor-NW (Ranch 8) | 1/21/26 | 63.1 9.0 | 1400 | 41.9 1.2 | 0728 | 44.1 2.4 | 84 | 91 0 | 62 20 | 0.6 | 7.5 5.0 | 1732 | 0.00 | 23.45 | 0.036 0.010 | 162 32 | - |
| Windsor-East (Ranch 16) | 1/21/26 | 62.0 6.2 | 1417 | 40.2 1.8 | 0609 | 45.0 2.2 | 90 | 100 0 | 59 13 | 1.8 | 9.2 3.0 | 2044 | 0.00 | 17.32 | 0.037 0.009 | 161 24 | 0 |
| Mark West-North (Ranch 14) | 1/21/26 | 60.5 6.1 | 1407 | 40.8 2.4 | 0536 | 44.3 1.7 | 88 | 98 0 | 58 15 | 1.2 | 6.9 1.1 | 1512 | 0.00 | 18.96 | 0.006 0.004 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 1/21/26 | 60.2 5.8 | 1404 | 40.2 3.7 | 0036 | 44.6 2.3 | 91 | 100 0 | 59 15 | 1.5 | 7.4 1.1 | 1339 | 0.00 | 15.30 | 0.033 0.009 | 149 31 | 0 |
| Fulton-NW (Ranch 5) | 1/21/26 | 59.0 5.5 | 1405 | 38.8 1.8 | 0723 | 9.9 1.8 | 47 | 100 0 | 3 0 | 1.8 | 8.6 2.5 | 1716 | 0.00 | 18.91 | 0.043 0.012 | 151 38 | 0 |
| Windsor-South (Laughlin Rd) | 1/21/26 | 59.9 6.1 | 1404 | 40.4 3.0 | 0707 | -2.6 1.2 | 47 | 100 0 | 0 0 | - | - | - | 0.00 | 18.83 | - | - | - |
| Fulton-SE (Barnes Rd) | 1/21/26 | 58.9 4.0 | 1427 | 39.9 1.4 | 0547 | 44.4 1.7 | 88 | 98 0 | 63 7 | 0.6 | 11.0 3.9 | 1711 | 0.00 | 18.16 | - | - | - |
| Fulton-SW (Ranch 21) | 1/21/26 | 58.8 5.1 | 1400 | 38.8 1.8 | 0551 | -12.6 14.2 | 40 | 100 0 | 0 0 | 2.0 | 9.1 0.7 | 1509 | 0.01 | 18.44 | 0.044 0.010 | 147 19 | - |
| Santa Rosa-NW (Goldfields) | 1/21/26 | 60.1 5.0 | 1347 | 39.6 2.5 | 0722 | 44.6 1.5 | 92 | 100 0 | 62 10 | 1.9 | 9.1 1.5 | 1706 | 0.00 | 19.41 | 0.033 0.011 | 139 38 | - |
| Goldfields Remote | 1/21/26 | 60.1 5.2 | 1359 | 44.4 7.8 | 1001 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 1/21/26 | 57.6 3.8 | 1359 | 39.2 2.9 | 0715 | 45.4 1.9 | 96 | 100 0 | 74 9 | 1.5 | 8.4 0.8 | 1457 | 0.00 | 16.67 | - | - | - |
| River Rd South (Denner Ranch) | 1/21/26 | 60.2 6.7 | 1402 | 39.9 2.6 | 0716 | 45.2 1.5 | 94 | 100 0 | 63 17 | 2.4 | 11.2 2.2 | 1459 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 1/21/26 | 60.0 5.9 | 1403 | 40.1 2.2 | 0552 | 44.4 1.3 | 91 | 100 0 | 62 13 | 1.4 | 8.9 1.4 | 1706 | 0.02 | 14.57 | 0.005 0.003 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 1/21/26 | 59.1 5.0 | 1400 | 41.0 1.9 | 0534 | 45.0 1.3 | 91 | 100 0 | 65 10 | - | - | - | 0.00 | 17.50 | - | - | - |
| Guerneville Rd West (Balletto) | 1/21/26 | 58.2 4.1 | 1357 | 40.7 2.6 | 0038 | 45.2 1.7 | 93 | 100 0 | 72 9 | 1.8 | 8.4 1.9 | 1705 | 0.01 | 17.42 | - | - | - |
| Sanchietti Ranch | 1/21/26 | 57.4 2.4 | 1334 | 41.7 2.6 | 0530 | 46.1 1.6 | - | 100 0 | 78 4 | 2.0 | 8.6 2.0 | 2057 | 0.00 | 18.32 | - | - | - |
| Occidental Rd (Sebastopol) | 1/21/26 | 58.0 3.5 | 1351 | 40.0 2.7 | 0527 | 46.7 2.4 | 100 | 100 0 | 100 0 | 1.3 | 6.4 0.7 | 2236 | 0.00 | 6.75 | - | - | - |
| Lower Westside Rd (Ranch 12) | 1/21/26 | 65.1 9.7 | 1404 | 42.0 1.2 | 0731 | 45.0 1.8 | 86 | 100 0 | 48 21 | 0.7 | 7.0 2.7 | 2108 | 0.00 | 22.83 | - | - | 0 |
| Guerneville (Laughlin Rd) | 1/21/26 | 64.1 5.2 | 1349 | 44.0 2.5 | 0736 | 47.4 2.2 | 91 | 98 0 | 57 11 | 1.1 | 7.5 1.8 | 2319 | 0.00 | 30.91 | - | - | - |
| Korbel (Winery) | 1/21/26 | 63.3 8.0 | 1348 | 43.8 1.8 | 0721 | 46.8 1.8 | 90 | 100 0 | 46 27 | 0.9 | 6.9 1.6 | 1203 | 0.00 | 28.43 | - | - | - |
| Forestville (Shone Farms) | 1/21/26 | 61.0 5.6 | 1418 | 39.8 0.7 | 0634 | 44.8 1.3 | 89 | 98 0 | 62 13 | 1.6 | 7.8 0.1 | 1156 | 0.01 | 24.18 | 0.037 0.014 | 155 47 | 0 |
| Forestville-NE (Ranch 30) | 1/21/26 | 62.7 7.5 | 1359 | 40.8 1.9 | 0733 | 45.4 1.7 | 92 | 100 0 | 61 19 | 1.7 | 8.8 1.1 | 1201 | 0.00 | 22.50 | 0.036 0.013 | 158 47 | - |
| Green Valley Vineyard | 1/21/26 | 60.3 6.1 | 1353 | 40.0 0.0 | 0706 | 44.7 1.2 | 89 | 99 0 | 56 20 | 1.4 | 8.8 3.5 | 2257 | 0.01 | 27.24 | 0.005 0.027 | 0 151 | - |
| Green Valley (Sanchietti) | 1/21/26 | 63.1 7.6 | 1351 | 39.4 2.1 | 0542 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 1/21/26 | 60.0 5.4 | 1352 | 39.3 2.6 | 0553 | 44.8 2.0 | 91 | 100 0 | 64 15 | - | - | - | 0.00 | 24.46 | - | - | - |
| Graton-South (Mill Station Rd) | 1/21/26 | 60.5 4.8 | 1355 | 40.0 3.8 | 0537 | 44.5 0.2 | 90 | 100 0 | 62 11 | 0.1 | 4.0 0.4 | 2253 | 0.00 | 21.65 | - | - | 0 |
| Occidental (Horseshoe Bend) | 1/21/26 | 60.9 5.0 | 1305 | 45.6 3.8 | 0733 | 45.5 0.6 | - | 92 3 | 58 10 | - | - | - | 0.00 | 16.07 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 1/21/26 | 59.5 4.3 | 1457 | 39.4 3.3 | 0602 | 44.9 2.3 | 91 | 100 0 | 67 9 | 1.0 | 7.5 0.9 | 1138 | 0.00 | 7.09 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 1/21/26 | 59.5 5.5 | 1346 | 42.6 1.1 | 0755 | 46.1 1.0 | 92 | 100 0 | 69 10 | 0.5 | 6.8 2.4 | 1651 | 0.00 | 21.46 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 1/21/26 | 61.9 4.4 | 1302 | 49.8 0.7 | 1031 | 40.4 3.2 | 59 | 84 2 | 40 26 | 2.2 | 8.5 1.3 | 1942 | 0.00 | 37.55 | 0.047 0.008 | 162 49 | - |
| Max | 65.1 | - | 49.8 | - | 47.4 | 100 | 100 | 100 | 2.4 | 11.2 | - | 0.02 | 37.55 | 0.047 | 162 | - | |
| Avg | - | - | - | - | 40.0 | 84 | - | - | 1.4 | - | - | - | - | - | - | - | |
| Min | 57.4 | - | 38.8 | - | -12.6 | 40 | 84 | 0 | 0.1 | 4.0 | - | 0.00 | 6.75 | 0.005 | 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 | 1/21/26 | 61.0 3.7 | 1417 | 44.0 0.5 | 0549 | 43.0 0.9 | 93 2 | 35 6 | 1.9 0.2 | 8.9 1.5 | 1201 | NNW | 341 | 0.00 | 5.41 | 0.041 0.000 | 178 28 | - |
| Lower Bennett Valley | 1/21/26 | 59.8 3.6 | 1422 | 37.8 2.3 | 0553 | 44.8 2.7 | 100 0 | 67 5 | 1.9 0.2 | 9.5 0.0 | 1957 | SSW | 202 | 0.00 | 17.51 | 0.035 0.003 | 154 4 | 0 0 |
| Kenwood (Wildwood) | 1/21/26 | 58.5 5.1 | 1411 | 39.6 2.0 | 0542 | 44.4 1.7 | 100 0 | 67 6 | 2.3 0.3 | 12.9 5.6 | 1448 | SSW | 196 | 0.00 | 21.09 | 0.033 0.007 | 160 26 | - |
| Sonoma Valley (Bedrock) | 1/21/26 | 57.4 4.1 | 1404 | 38.4 4.0 | 0556 | 42.5 1.6 | 98 0 | 65 7 | - | - | - | - | 0.00 | 17.00 | - | - | - |
| Sonoma-West (Arnold) | 1/21/26 | 56.9 3.7 | 1400 | 38.7 3.1 | 0734 | 43.6 1.3 | 100 0 | 67 8 | 1.8 0.3 | 8.9 0.1 | 1000 | S | 179 | 0.00 | 14.29 | 0.032 0.004 | 162 22 | - |
| Sonoma Valley HS | 1/21/26 | 54.4 2.3 | 1421 | 39.8 1.9 | 0522 | 44.8 1.2 | 100 0 | 76 5 | 1.4 0.3 | 7.0 1.8 | 1057 | N | 10 | 0.00 | 5.10 | 0.028 0.002 | 143 17 | - |
| Sonoma East (Bundschu01) | 1/21/26 | 54.7 2.1 | 1403 | 39.1 2.5 | 0745 | 43.3 1.1 | 98 0 | 73 2 | 2.2 0.3 | 8.6 1.3 | 1158 | SSW | 207 | 0.00 | 11.65 | 0.030 0.003 | 148 17 | - |
| Schellville (Sasaki) | 1/20/26 | 53.6 10.2 | 1425 | 36.7 3.9 | 0123 | 42.3 2.2 | 97 1 | 75 26 | 1.3 0.0 | 7.1 1.7 | 0937 | NNE | 26 | 0.00 | 0.00 | - | - | 0 0 |
| Sonoma-SE (Napoli) | 1/21/26 | 56.0 2.5 | 1400 | 39.0 2.0 | 0752 | 43.4 1.1 | 97 0 | 70 4 | 1.0 0.3 | 7.1 3.0 | 0852 | SSW | 199 | 0.00 | 10.96 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 1/21/26 | 55.8 3.2 | 1354 | 38.4 0.8 | 0718 | 43.1 0.9 | 98 0 | 69 7 | 2.3 0.3 | 9.3 0.2 | 0858 | SE | 125 | 0.00 | 13.95 | 0.030 0.003 | 150 14 | - |
| Carneros (Ranch 71) | 1/21/26 | 53.4 2.5 | 1404 | 42.1 1.8 | 0737 | 44.8 1.1 | 100 0 | 75 8 | 2.2 0.5 | 11.3 2.3 | 1057 | E | 89 | 0.00 | 11.98 | 0.027 0.001 | 137 6 | 0 0 |
| Carneros Upper (Ranch 81) | 1/21/26 | 55.9 5.1 | 1401 | 42.0 1.7 | 0749 | 15.0 7.3 | - | - | 2.9 1.1 | 11.6 2.3 | 1013 | SSE | 159 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 1/21/26 | 54.7 3.2 | 1406 | 40.2 0.3 | 0725 | -8.3 7.5 | 100 0 | 0 0 | 1.4 0.0 | 11.0 2.3 | 1602 | S | 173 | 0.00 | 12.79 | 0.031 0.002 | 96 3 | - |
| Rohnert Park-West (Stony Point) | 1/21/26 | 55.6 1.9 | 1420 | 38.4 2.8 | 0531 | 44.4 1.1 | 100 0 | 75 6 | 1.4 0.5 | 9.4 0.3 | 1645 | SE | 141 | 0.00 | 1.58 | - | - | - |
| Cartograph Wines Base | 1/21/26 | 55.7 2.0 | 1306 | 41.2 0.8 | 0638 | 45.8 0.7 | 100 0 | 76 9 | 2.0 0.5 | 11.8 0.3 | 1645 | ESE | 122 | 0.00 | 17.42 | 0.034 0.006 | 166 18 | - |
| Cartograph Wines Remote | 1/21/26 | 57.2 3.0 | 1258 | 38.8 1.8 | 0529 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 1/21/26 | 57.5 1.9 | 1309 | 36.8 3.2 | 0530 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 1/21/26 | 56.2 4.3 | 1349 | 38.8 3.3 | 0528 | 43.8 1.5 | 98 0 | 71 8 | 2.8 0.7 | 11.6 1.7 | 1209 | SSE | 160 | 0.00 | 15.11 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 1/21/26 | 54.6 4.2 | 1352 | 43.6 4.0 | 0958 | 44.3 1.2 | 100 0 | 73 4 | 3.4 0.1 | 13.2 0.3 | 1148 | NNE | 31 | 0.00 | 14.80 | 0.029 0.004 | 146 10 | 0 0 |
| Petaluma (Ranch 10) | 1/21/26 | 57.2 4.6 | 1355 | 39.8 4.2 | 0802 | 44.0 1.2 | 100 0 | 69 10 | 1.1 0.6 | 7.3 0.2 | 1415 | SSE | 166 | 0.00 | 11.56 | 0.027 0.000 | 126 3 | 0 0 |
| Max | 61.0 | - | 44.0 | - | 45.8 | 100 | 76 | 3.4 | 13.2 | - | - | 0.00 | 21.09 | 0.041 | 178 | - | |
| Avg | - | - | - | - | 39.2 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 53.4 | - | 36.8 | - | -8.3 | 93 | 0 | 1.0 | 7.0 | - | - | 0.00 | 1.58 | 0.027 | 96 | - |