| 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) | 1/20/26 | 66.7 8.0 | 1253 | 48.1 2.6 | 0743 | 40.6 0.7 | 56 | 84 7 | 36 12 | 1.8 | 12.9 6.1 | 1808 | NNE | 31 | 0.00 | 28.82 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 1/20/26 | 65.6 6.1 | 1316 | 53.0 0.9 | 1815 | 33.9 1.4 | 41 | 70 3 | 25 7 | 3.1 | 11.0 0.7 | 1855 | NNW | 344 | 0.00 | 29.56 | 0.071 0.022 | 222 82 | 0 0 |
| Cloverdale-East (Ranch 83) | 1/20/26 | 65.6 9.1 | 1314 | 37.9 0.4 | 0006 | 40.7 1.6 | - | - | - | 3.0 | 16.2 5.4 | 0438 | N | 1 | 0.00 | 25.01 | 0.047 0.030 | 182 76 | 0 0 |
| Cloverdale-SE (Ranch 38) | 1/20/26 | 63.4 11.3 | 1250 | 42.8 2.2 | 0817 | 44.1 3.6 | 78 | 92 5 | 45 12 | 4.3 | 20.3 3.3 | 0443 | NNE | 26 | 0.00 | 26.49 | 0.049 0.030 | 180 77 | 0 0 |
| Geyserville-North (Hoffman) | 1/20/26 | 57.6 12.5 | 1308 | 36.4 4.1 | 0638 | 42.5 2.2 | 89 | 97 0 | 69 32 | 1.9 | 7.1 0.1 | 1410 | ESE | 102 | 0.00 | 25.50 | 0.037 0.026 | 161 84 | 0 0 |
| Geyserville (Ranch 3) | 1/20/26 | 57.1 12.1 | 1508 | 37.3 3.4 | 0640 | 43.5 2.6 | 92 | 100 0 | 67 35 | 1.9 | 7.7 0.3 | 1414 | E | 101 | 0.00 | 25.44 | 0.038 0.021 | 176 70 | 0 0 |
| Geyserville-East (Ranch 40) | 1/20/26 | 57.0 14.0 | 1352 | 41.3 2.8 | 0724 | 45.2 1.5 | 87 | 99 9 | 65 25 | 2.9 | 12.9 0.7 | 1824 | NE | 45 | 0.00 | 25.86 | 0.041 0.033 | 204 69 | 0 0 |
| Geyserville-South (Nervo Station) | 1/20/26 | 56.9 12.8 | 1500 | 39.3 1.5 | 0748 | - | - | - | - | 1.1 | 7.8 0.7 | 1852 | W | 263 | 0.00 | 19.38 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 1/20/26 | 57.8 18.2 | 1312 | 34.9 3.2 | 0656 | 42.0 3.0 | 92 | 100 0 | 64 41 | 1.0 | 6.4 0.4 | 1856 | WSW | 241 | 0.00 | 23.63 | 0.032 0.019 | 153 76 | 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) | 1/20/26 | 58.2 14.2 | 1449 | 34.9 3.4 | 0634 | 41.9 2.3 | 91 | 100 0 | 64 26 | 1.4 | 6.8 0.7 | 1300 | S | 175 | 0.00 | 22.79 | 0.035 0.020 | 156 75 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 1/20/26 | 56.9 12.7 | 1252 | 34.2 2.8 | 0718 | 41.5 2.2 | 92 | 100 0 | 67 28 | 0.2 | 7.0 1.0 | 1304 | SE | 144 | 0.00 | 24.15 | 0.033 0.022 | 159 71 | - |
| Knights Valley (Bavarian Lion) | 1/20/26 | 60.5 13.6 | 1504 | 34.5 4.2 | 0752 | 41.6 3.2 | 88 | 98 0 | 58 26 | 1.9 | 8.6 2.8 | 1819 | W | 278 | 0.00 | 22.63 | 0.043 0.014 | 205 51 | - |
| Upper Dry Creek Valley | 1/20/26 | 57.2 13.1 | 1238 | 37.7 2.1 | 0617 | 43.1 1.5 | 90 | 98 0 | 67 30 | 1.6 | 9.0 2.1 | 1409 | SE | 131 | 0.00 | 27.46 | 0.040 0.026 | 188 82 | - |
| Lower Dry Creek Valley | 1/20/26 | 54.5 15.5 | 1553 | 37.8 3.9 | 0208 | 43.2 2.1 | 94 | 100 0 | 74 39 | 1.5 | 9.7 1.5 | 1324 | SE | 131 | 0.00 | 27.06 | 0.033 0.026 | 167 81 | 0 0 |
| Max | 66.7 | - | 53.0 | - | 45.2 | 94 | 100 | 74 | 4.3 | 20.3 | - | - | 0.00 | 29.56 | 0.071 | 222 | - | |
| Avg | - | - | - | - | 41.8 | 82 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 54.5 | - | 34.2 | - | 33.9 | 41 | 70 | 25 | 0.2 | 6.4 | - | - | 0.00 | 19.38 | 0.032 | 153 | - |
| 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) | 1/20/26 | 54.3 16.5 | 1438 | 38.7 4.7 | 0241 | - | - | 100 0 | 75 39 | 0.9 | 6.5 0.0 | 1125 | 0.00 | 19.43 | - | - | 0 |
| Windsor-NW (Ranch 8) | 1/20/26 | 54.1 16.5 | 1551 | 40.7 1.8 | 0500 | 41.8 0.9 | 86 | 90 2 | 82 37 | 0.0 | 2.5 0.2 | 0545 | 0.00 | 23.45 | 0.026 0.029 | 130 125 | - |
| Windsor-East (Ranch 16) | 1/20/26 | 55.7 14.6 | 1437 | 38.4 5.6 | 0102 | 42.8 2.1 | 94 | 100 0 | 71 36 | 1.2 | 6.2 0.3 | 0409 | 0.00 | 17.32 | 0.028 0.033 | 137 123 | 0 |
| Mark West-North (Ranch 14) | 1/20/26 | 54.4 15.8 | 1441 | 38.4 4.5 | 0248 | 42.6 2.3 | 93 | 98 0 | 73 39 | 1.0 | 5.7 0.8 | 1324 | 0.00 | 18.96 | 0.002 0.007 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 1/20/26 | 54.4 15.1 | 1600 | 36.4 5.0 | 0131 | 42.2 2.9 | 95 | 100 0 | 74 36 | 1.2 | 6.3 0.2 | 0416 | 0.00 | 15.30 | 0.024 0.037 | 118 150 | 0 |
| Fulton-NW (Ranch 5) | 1/20/26 | 53.6 13.1 | 1552 | 36.9 5.1 | 0207 | 8.2 6.9 | 51 | 100 0 | 3 0 | 1.2 | 6.1 0.8 | 0405 | 0.00 | 18.91 | 0.031 0.027 | 114 136 | 0 |
| Windsor-South (Laughlin Rd) | 1/20/26 | 53.8 14.6 | 1601 | 37.3 4.4 | 0231 | -3.8 21.2 | 51 | 100 0 | 0 0 | - | - | - | 0.01 | 18.83 | - | - | - |
| Fulton-SE (Barnes Rd) | 1/20/26 | 54.9 13.0 | 1440 | 38.4 5.5 | 0255 | 42.6 1.7 | 92 | 98 0 | 70 30 | 0.4 | 7.2 1.5 | 0402 | 0.00 | 18.16 | - | - | - |
| Fulton-SW (Ranch 21) | 1/20/26 | 53.6 13.2 | 1432 | 37.0 4.9 | 0140 | -26.9 18.4 | 32 | 100 0 | 0 0 | 1.6 | 8.4 2.0 | 0401 | 0.00 | 18.43 | 0.034 0.033 | 128 158 | - |
| Santa Rosa-NW (Goldfields) | 1/20/26 | 55.1 15.1 | 1432 | 37.2 4.6 | 0225 | 43.1 2.0 | 95 | 100 0 | 72 35 | 1.5 | 7.7 0.5 | 0400 | 0.00 | 19.41 | 0.022 0.036 | 101 138 | - |
| Goldfields Remote | 1/20/26 | 54.8 13.9 | 1430 | 36.6 4.7 | 0146 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 1/20/26 | 53.8 13.4 | 1556 | 36.3 4.8 | 0216 | 43.4 1.9 | 98 | 100 0 | 82 37 | 1.2 | 7.6 1.2 | 0357 | 0.01 | 16.67 | - | - | - |
| River Rd South (Denner Ranch) | 1/20/26 | 53.5 14.4 | 1542 | 37.4 5.6 | 0236 | 43.6 2.0 | 98 | 100 0 | 80 40 | 1.8 | 9.0 1.5 | 1816 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 1/20/26 | 54.2 13.8 | 1601 | 37.9 5.5 | 0241 | 43.1 2.3 | 95 | 100 0 | 75 37 | 1.0 | 7.5 1.6 | 1815 | 0.02 | 14.55 | 0.002 0.007 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 1/20/26 | 54.1 11.8 | 1541 | 39.1 5.3 | 0246 | 43.7 2.0 | 95 | 100 0 | 76 36 | - | - | - | 0.00 | 17.50 | - | - | - |
| Guerneville Rd West (Balletto) | 1/20/26 | 54.0 12.9 | 1551 | 38.1 6.1 | 0156 | 43.5 2.1 | 97 | 100 0 | 81 35 | 1.3 | 6.5 0.3 | 1812 | 0.00 | 17.41 | - | - | - |
| Sanchietti Ranch | 1/20/26 | 55.0 12.0 | 1543 | 39.1 5.7 | 0217 | 44.5 1.6 | - | 100 0 | 82 32 | 1.9 | 6.6 0.7 | 1807 | 0.00 | 18.32 | - | - | - |
| Occidental Rd (Sebastopol) | 1/20/26 | 54.4 12.1 | 1541 | 37.3 6.0 | 0149 | 44.3 0.9 | 100 | 100 0 | 100 26 | 1.2 | 5.7 0.7 | 0539 | 0.01 | 6.75 | - | - | - |
| Lower Westside Rd (Ranch 12) | 1/20/26 | 55.4 17.9 | 1443 | 40.8 4.4 | 0148 | 43.2 1.7 | 91 | 100 0 | 69 37 | 0.6 | 4.3 1.2 | 1334 | 0.00 | 22.83 | - | - | 0 |
| Guerneville (Laughlin Rd) | 1/20/26 | 58.9 6.6 | 1433 | 41.5 2.4 | 0509 | 45.2 0.7 | 93 | 98 0 | 68 9 | 0.7 | 5.8 2.0 | 1822 | 0.00 | 30.91 | - | - | - |
| Korbel (Winery) | 1/20/26 | 55.3 12.0 | 1356 | 42.0 1.7 | 0827 | 45.1 0.1 | 94 | 100 0 | 73 32 | 1.4 | 8.6 4.4 | 1130 | 0.00 | 28.43 | - | - | - |
| Forestville (Shone Farms) | 1/20/26 | 55.4 12.8 | 1553 | 39.1 4.8 | 0222 | 43.6 1.2 | 94 | 98 0 | 75 32 | 1.2 | 7.9 0.9 | 0329 | 0.00 | 24.17 | 0.023 0.039 | 108 150 | 0 |
| Forestville-NE (Ranch 30) | 1/20/26 | 55.2 13.2 | 1552 | 38.9 0.8 | 0159 | 43.7 0.2 | 97 | 100 0 | 80 33 | 1.1 | 7.7 0.4 | 0420 | 0.00 | 22.50 | 0.023 0.039 | 111 145 | - |
| Green Valley Vineyard | 1/20/26 | 54.2 14.2 | 1544 | 40.0 2.6 | 0220 | 43.5 0.1 | 95 | 99 0 | 76 34 | 1.2 | 5.3 1.3 | 1420 | 0.00 | 27.23 | 0.032 0.023 | 151 151 | - |
| Green Valley (Sanchietti) | 1/20/26 | 55.5 15.0 | 1539 | 37.3 1.9 | 0133 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 1/20/26 | 54.6 15.2 | 1549 | 36.8 3.4 | 0211 | 42.7 1.5 | 96 | 100 0 | 79 32 | - | - | - | 0.00 | 24.46 | - | - | - |
| Graton-South (Mill Station Rd) | 1/20/26 | 55.7 13.6 | 1539 | 36.2 4.6 | 0208 | 44.3 3.6 | 94 | 100 0 | 72 34 | 0.1 | 3.7 2.0 | 1805 | 0.00 | 21.65 | - | - | 0 |
| Occidental (Horseshoe Bend) | 1/20/26 | 55.9 11.2 | 1428 | 41.7 5.5 | 0846 | 44.9 0.7 | - | 95 6 | 68 22 | - | - | - | 0.01 | 16.07 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 1/20/26 | 55.3 13.9 | 1542 | 36.1 3.4 | 0232 | 42.6 1.2 | 96 | 100 0 | 76 29 | 1.0 | 6.6 1.3 | 1039 | 0.00 | 7.09 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 1/20/26 | 53.9 13.7 | 1544 | 41.5 1.9 | 0545 | 45.1 1.0 | 97 | 100 2 | 79 30 | 0.3 | 4.4 3.6 | 0333 | 0.00 | 21.46 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 1/20/26 | 66.4 3.3 | 1132 | 50.5 4.4 | 1803 | 37.2 6.3 | 48 | 82 9 | 13 5 | 1.9 | 9.8 0.7 | 0221 | 0.00 | 37.55 | 0.055 0.024 | 211 72 | - |
| Max | 66.4 | - | 50.5 | - | 45.2 | 100 | 100 | 100 | 1.9 | 9.8 | - | 0.02 | 37.55 | 0.055 | 211 | - | |
| Avg | - | - | - | - | 37.8 | 87 | - | - | 1.1 | - | - | - | - | - | - | - | |
| Min | 53.5 | - | 36.1 | - | -26.9 | 32 | 82 | 0 | 0.0 | 2.5 | - | 0.00 | 6.75 | 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 | 1/20/26 | 57.2 9.8 | 1437 | 43.4 2.3 | 0451 | 42.1 0.2 | 92 7 | 41 1 | 1.7 0.6 | 7.4 2.7 | 1822 | NNE | 19 | 0.00 | 5.41 | 0.041 0.032 | 206 95 | - |
| Lower Bennett Valley | 1/20/26 | 56.2 12.1 | 1449 | 35.5 3.7 | 0028 | 42.2 2.0 | 100 0 | 73 31 | 1.7 0.1 | 9.5 1.9 | 1852 | ESE | 102 | 0.00 | 17.51 | 0.032 0.029 | 159 103 | 0 0 |
| Kenwood (Wildwood) | 1/20/26 | 53.4 12.5 | 1441 | 37.6 3.5 | 0037 | 42.8 0.3 | 100 0 | 72 24 | 2.0 0.2 | 7.2 0.2 | 1042 | SSW | 198 | 0.00 | 21.09 | 0.026 0.031 | 133 98 | - |
| Sonoma Valley (Bedrock) | 1/20/26 | 53.2 10.6 | 1435 | 34.4 0.6 | 0211 | 41.0 0.4 | 98 0 | 72 20 | - | - | - | - | 0.00 | 17.00 | - | - | - |
| Sonoma-West (Arnold) | 1/20/26 | 53.2 11.6 | 1501 | 35.6 1.6 | 0156 | 42.3 1.2 | 100 0 | 74 27 | 1.4 0.1 | 8.8 1.2 | 0422 | S | 169 | 0.00 | 14.29 | 0.028 0.044 | 140 167 | - |
| Sonoma Valley HS | 1/20/26 | 52.1 10.4 | 1448 | 37.9 3.4 | 0049 | 43.6 1.2 | 100 0 | 81 25 | 1.1 0.1 | 5.3 0.8 | 1511 | SSW | 200 | 0.01 | 5.10 | 0.026 0.032 | 126 142 | - |
| Sonoma East (Bundschu01) | 1/20/26 | 52.6 10.5 | 1443 | 36.7 3.3 | 0140 | 42.2 1.7 | 98 0 | 76 26 | 1.9 0.4 | 7.2 2.2 | 0400 | NNE | 13 | 0.00 | 11.65 | 0.027 0.036 | 131 152 | - |
| 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) | 1/20/26 | 53.5 10.8 | 1437 | 37.0 3.4 | 0137 | 42.3 1.7 | 96 1 | 74 27 | 0.7 0.1 | 10.1 2.3 | 1842 | SE | 140 | 0.00 | 10.96 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 1/20/26 | 52.6 11.5 | 1450 | 37.6 5.0 | 0009 | 42.2 2.1 | 98 0 | 75 29 | 2.6 0.6 | 9.6 1.1 | 1020 | SE | 139 | 0.00 | 13.95 | 0.033 0.035 | 164 132 | - |
| Carneros (Ranch 71) | 1/20/26 | 50.9 10.7 | 1441 | 40.3 2.8 | 0339 | 43.7 1.2 | 100 5 | 83 32 | 2.7 1.3 | 13.6 7.4 | 1825 | E | 82 | 0.00 | 11.98 | 0.026 0.033 | 132 144 | 0 0 |
| Carneros Upper (Ranch 81) | 1/20/26 | 50.7 11.2 | 1442 | 40.2 3.8 | 0335 | 22.2 22.2 | - | - | 4.0 1.3 | 13.9 5.5 | 0424 | ESE | 116 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 1/20/26 | 51.5 10.6 | 1514 | 39.8 4.0 | 0044 | -0.9 17.9 | 100 0 | 0 0 | 1.4 0.1 | 13.3 6.7 | 0419 | S | 169 | 0.00 | 12.79 | 0.029 0.016 | 99 76 | - |
| Rohnert Park-West (Stony Point) | 1/20/26 | 53.7 13.8 | 1521 | 35.6 4.5 | 0049 | 43.2 2.3 | 100 0 | 82 29 | 1.9 1.1 | 9.1 1.6 | 0529 | SSE | 150 | 0.00 | 1.58 | - | - | - |
| Cartograph Wines Base | 1/20/26 | 53.6 12.8 | 1419 | 40.4 0.9 | 0250 | 45.1 1.5 | 100 0 | 85 35 | 2.4 0.8 | 12.1 2.6 | 0525 | ESE | 110 | 0.00 | 17.42 | 0.028 0.029 | 148 115 | - |
| Cartograph Wines Remote | 1/20/26 | 54.2 9.8 | 1406 | 37.1 2.3 | 0008 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 1/20/26 | 55.6 13.7 | 1424 | 33.6 3.3 | 0028 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 1/20/26 | 51.9 14.6 | 1429 | 35.5 3.6 | 0001 | 42.2 2.8 | 98 0 | 79 34 | 3.5 1.8 | 13.3 2.6 | 0454 | ESE | 110 | 0.00 | 15.11 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 1/20/26 | 50.4 13.0 | 1544 | 39.6 7.3 | 0314 | 43.1 0.7 | 100 10 | 69 26 | 3.5 1.1 | 13.5 1.1 | 0234 | NNE | 26 | 0.00 | 14.80 | 0.025 0.034 | 136 125 | 0 0 |
| Petaluma (Ranch 10) | 1/20/26 | 52.6 14.2 | 1426 | 35.6 2.5 | 0222 | 42.8 3.8 | 100 0 | 78 34 | 1.7 1.1 | 7.1 0.8 | 1224 | SSE | 167 | 0.00 | 11.56 | 0.027 0.024 | 122 97 | 0 0 |
| Max | 57.2 | - | 43.4 | - | 45.1 | 100 | 85 | 4.0 | 13.9 | - | - | 0.01 | 21.09 | 0.041 | 206 | - | |
| Avg | - | - | - | - | 39.1 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 50.4 | - | 33.6 | - | -0.9 | 92 | 0 | 0.7 | 5.3 | - | - | 0.00 | 0.00 | 0.025 | 99 | - |