| 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) | 12/23/25 | 55.2 3.0 | 2354 | 51.4 2.3 | 1815 | 52.2 0.3 | 100 | 100 0 | 94 17 | 5.0 | 37.1 27.7 | 2352 | SSE | 149 | 1.34 | 17.32 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/23/25 | 52.1 3.2 | 2345 | 48.5 2.4 | 1407 | 49.8 0.1 | 100 | 100 0 | 100 17 | 15.9 | 70.8 55.5 | 2359 | SE | 142 | 1.56 | 17.54 | 0.007 0.019 | 49 77 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/23/25 | 57.5 4.4 | 1026 | 53.8 4.2 | 0406 | 9.3 24.7 | - | - | - | 5.0 | 27.7 17.0 | 2205 | SE | 127 | 1.62 | 14.62 | 0.029 0.010 | 52 64 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/23/25 | 56.0 4.6 | 1013 | 53.2 1.3 | 0201 | 54.0 0.1 | 99 | 100 0 | 94 14 | 9.4 | 32.9 20.8 | 2325 | NNW | 339 | 1.66 | 15.15 | 0.010 0.015 | 43 60 | 0 0 |
| Geyserville-North (Hoffman) | 12/18/25 | 54.7 12.4 | 1442 | 38.7 2.9 | 0312 | 47.0 0.2 | 94 | 98 0 | 85 24 | 1.3 | 6.6 2.5 | 1512 | SE | 130 | 0.00 | 0.00 | 0.019 0.024 | 74 105 | 0 0 |
| Geyserville (Ranch 3) | 12/23/25 | 57.7 1.7 | 1129 | 54.5 1.7 | 1918 | 55.6 0.2 | 100 | 100 0 | 89 4 | 4.2 | 18.2 10.5 | 1310 | SE | 138 | 1.47 | 13.61 | 0.010 0.011 | 42 44 | 0 0 |
| Geyserville-East (Ranch 40) | 12/23/25 | 57.3 0.8 | 1629 | 52.6 1.0 | 1904 | 53.7 0.5 | 98 | 100 0 | 81 10 | 11.4 | 39.5 23.0 | 2308 | S | 190 | 1.23 | 13.77 | 0.014 0.006 | 49 36 | 0 0 |
| Geyserville-South (Nervo Station) | 12/23/25 | 57.4 2.1 | 0956 | 53.8 0.4 | 1930 | - | - | - | - | 3.7 | 18.8 12.4 | 2317 | ESE | 123 | 0.79 | 10.39 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/23/25 | 58.3 1.9 | 1121 | 54.6 0.6 | 1850 | 54.6 1.1 | 94 | 100 0 | 79 0 | 2.2 | 15.1 7.5 | 1103 | ESE | 104 | 0.81 | 13.09 | 0.016 0.003 | 49 23 | 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) | 12/23/25 | 59.3 0.9 | 1201 | 54.9 0.3 | 1839 | 54.8 1.0 | 94 | 100 0 | 82 0 | 2.2 | 19.6 10.3 | 2024 | NE | 55 | 0.55 | 13.87 | 0.017 0.003 | 49 1 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/23/25 | 56.8 1.0 | 2352 | 53.0 0.0 | 0541 | 53.3 1.2 | 96 | 100 0 | 84 2 | 3.0 | 17.0 5.9 | 2144 | SE | 141 | 0.59 | 13.75 | 0.016 0.001 | 55 1 | - |
| Knights Valley (Bavarian Lion) | 12/23/25 | 57.7 0.8 | 2223 | 54.2 0.2 | 1749 | 53.4 0.7 | 92 | 98 0 | 80 1 | 4.2 | 17.1 7.9 | 2305 | S | 179 | 0.38 | 14.09 | 0.020 0.002 | 57 5 | - |
| Upper Dry Creek Valley | 12/23/25 | 57.8 3.0 | 1009 | 54.5 1.9 | 2023 | 54.5 0.1 | 96 | 98 0 | 87 13 | 4.3 | 18.8 11.7 | 2332 | SE | 140 | 1.83 | 14.64 | 0.014 0.009 | 43 45 | - |
| Lower Dry Creek Valley | 12/23/25 | 58.3 2.4 | 1109 | 54.9 0.4 | 2016 | 55.9 0.1 | 100 | 100 0 | 92 17 | 4.5 | 18.4 9.1 | 2329 | NNW | 346 | 1.51 | 14.54 | 0.011 0.009 | 45 29 | 0 0 |
| Max | 59.3 | - | 54.9 | - | 55.9 | 100 | 100 | 100 | 15.9 | 70.8 | - | - | 1.83 | 17.54 | 0.029 | 57 | - | |
| Avg | - | - | - | - | 50.1 | 97 | - | - | 5.8 | - | - | - | - | - | - | - | - | |
| Min | 52.1 | - | 48.5 | - | 9.3 | 92 | 98 | 79 | 2.2 | 15.1 | - | - | 0.38 | 10.39 | 0.007 | 42 | - |
| 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) | 12/23/25 | 58.7 1.8 | 1055 | 54.9 0.0 | 0132 | - | - | 100 0 | 87 7 | 2.6 | 18.3 9.5 | 2247 | 0.91 | 7.80 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/23/25 | 57.9 1.4 | 1048 | 54.9 0.1 | 0216 | 51.4 0.9 | 85 | 88 1 | 81 0 | 0.2 | 12.1 9.1 | 2354 | 0.83 | 13.69 | 0.017 0.000 | 61 2 | - |
| Windsor-East (Ranch 16) | 12/23/25 | 58.7 1.0 | 1311 | 55.0 0.2 | 1729 | 54.7 1.3 | 94 | 100 0 | 78 5 | 3.6 | 20.7 10.0 | 2235 | 0.43 | 10.08 | 0.019 0.004 | 50 2 | 0 |
| Mark West-North (Ranch 14) | 12/23/25 | 58.4 0.8 | 1539 | 54.9 0.4 | 1849 | 54.6 0.8 | 94 | 98 0 | 82 2 | 1.9 | 16.3 8.4 | 2246 | 0.63 | 11.45 | 0.004 0.003 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/23/25 | 58.1 1.6 | 1008 | 55.1 0.3 | 1955 | 55.2 0.5 | 96 | 100 0 | 86 3 | 2.4 | 15.0 5.6 | 2212 | 0.80 | 6.56 | 0.016 0.000 | 54 3 | 0 |
| Fulton-NW (Ranch 5) | 12/23/25 | 58.6 0.6 | 1547 | 54.9 0.2 | 1925 | 21.4 21.2 | 55 | 100 0 | 3 0 | 3.8 | 18.6 6.2 | 2336 | 0.57 | 11.39 | 0.033 0.009 | 59 1 | 0 |
| Windsor-South (Laughlin Rd) | 12/23/25 | 58.0 1.0 | 1007 | 54.8 0.1 | 1806 | 13.1 17.1 | 50 | 100 0 | 0 0 | - | - | - | 0.66 | 11.08 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/23/25 | 59.4 0.8 | 1617 | 55.3 0.1 | 1938 | 54.7 0.9 | 93 | 98 0 | 77 9 | 3.5 | 20.0 8.3 | 2222 | 0.39 | 10.74 | - | - | - |
| Fulton-SW (Ranch 21) | 12/23/25 | 58.2 0.0 | 1607 | 54.9 0.1 | 1730 | -6.2 26.7 | 43 | 100 0 | 0 0 | 4.2 | 22.9 12.5 | 2339 | 0.56 | 11.17 | 0.046 0.002 | 59 5 | - |
| Santa Rosa-NW (Goldfields) | 12/19/25 | 58.9 1.9 | 1534 | 52.6 12.9 | 0225 | 56.1 7.5 | 100 | 100 0 | 93 25 | 3.1 | 14.0 9.1 | 1058 | 0.56 | 8.50 | 0.008 0.009 | 33 45 | - |
| Goldfields Remote | 12/23/25 | 58.7 0.0 | 1606 | 55.1 0.1 | 0642 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/23/25 | 58.4 0.4 | 1409 | 55.0 0.1 | 0635 | 56.3 0.2 | 100 | 100 0 | 92 4 | 2.9 | 21.2 10.1 | 2316 | 0.53 | 9.50 | - | - | - |
| River Rd South (Denner Ranch) | 12/23/25 | 57.6 0.7 | 1553 | 54.8 0.3 | 1811 | 55.9 0.2 | 100 | 100 0 | 97 3 | 5.5 | 22.6 10.3 | 2341 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/23/25 | 58.4 0.1 | 1605 | 55.2 0.6 | 1809 | 55.0 0.4 | 96 | 100 0 | 85 3 | 1.3 | 13.2 2.5 | 1636 | 0.63 | 9.85 | 0.002 0.000 | 0 3 | 0 |
| Guerneville Rd (Prokopakis) | 12/23/25 | 58.4 0.5 | 1610 | 55.4 0.2 | 1800 | 55.3 0.8 | 96 | 100 0 | 85 5 | - | - | - | 0.38 | 11.04 | - | - | - |
| Guerneville Rd West (Balletto) | 12/23/25 | 58.4 0.6 | 1609 | 55.3 0.4 | 0634 | 55.8 0.6 | 98 | 100 0 | 88 5 | 3.7 | 19.7 7.5 | 2351 | 0.61 | 10.05 | - | - | - |
| Sanchietti Ranch | 12/23/25 | 59.7 0.0 | 1357 | 56.4 0.5 | 0027 | 56.6 0.4 | - | 100 0 | 88 4 | 4.6 | 20.9 9.1 | 2341 | 0.58 | 11.01 | - | - | - |
| Occidental Rd (Sebastopol) | 12/23/25 | 81.3 0.9 | 1239 | 38.6 0.1 | 0229 | 56.4 0.2 | 100 | 100 0 | 100 0 | 2.2 | 16.0 1.3 | 1625 | 0.05 | 6.38 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/23/25 | 58.3 1.4 | 1059 | 54.9 0.2 | 1927 | 55.2 0.3 | 96 | 100 0 | 89 5 | 1.9 | 15.6 10.7 | 2357 | 0.80 | 13.25 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/23/25 | 60.4 0.0 | 2355 | 55.2 0.6 | 1802 | 54.8 0.6 | 95 | 98 0 | 83 1 | 1.9 | 26.4 16.7 | 2323 | 1.29 | 18.18 | - | - | - |
| Korbel (Winery) | 12/23/25 | 59.4 0.0 | 2352 | 55.4 0.1 | 0354 | 55.0 0.8 | 96 | 100 0 | 86 1 | 2.6 | 23.2 17.8 | 2306 | 1.35 | 16.79 | - | - | - |
| Forestville (Shone Farms) | 12/23/25 | 58.7 1.5 | 2228 | 54.2 0.2 | 1829 | 54.8 0.7 | 96 | 99 0 | 90 5 | 2.7 | 16.0 5.8 | 2349 | 0.96 | 14.53 | 0.013 0.002 | 40 12 | 0 |
| Forestville-NE (Ranch 30) | 12/23/25 | 57.2 1.1 | 1035 | 54.5 0.0 | 0108 | 55.0 0.7 | 99 | 100 0 | 93 0 | 4.0 | 20.2 11.2 | 2351 | 0.87 | 13.33 | 0.011 0.004 | 43 13 | - |
| Green Valley Vineyard | 12/23/25 | 59.0 0.5 | 2237 | 54.5 1.9 | 1843 | 54.5 0.4 | 96 | 99 0 | 87 0 | 2.6 | 30.2 18.2 | 2249 | 0.95 | 16.68 | 0.004 0.003 | 0 0 | - |
| Green Valley (Sanchietti) | 12/23/25 | 59.7 0.1 | 2244 | 55.7 1.4 | 0145 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/23/25 | 59.7 0.4 | 2239 | 55.5 2.8 | 0001 | 55.7 0.2 | 97 | 100 0 | 90 2 | - | - | - | 0.80 | 14.67 | - | - | - |
| Graton-South (Mill Station Rd) | 12/23/25 | 59.1 0.4 | 2240 | 54.9 1.1 | 0223 | 55.2 0.4 | 97 | 100 0 | 88 8 | 1.7 | 17.3 8.5 | 2241 | 0.71 | 13.62 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/23/25 | 58.1 1.4 | 2345 | 53.5 1.1 | 1404 | 54.4 0.2 | - | 100 0 | 90 10 | - | - | - | 0.43 | 13.29 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/23/25 | 60.1 1.3 | 2235 | 55.6 1.3 | 0423 | 55.6 0.5 | 96 | 100 0 | 88 9 | 1.7 | 21.8 10.6 | 2234 | 0.00 | 7.00 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/23/25 | 58.3 0.5 | 2236 | 54.1 1.2 | 2006 | 54.9 0.1 | 99 | 100 0 | 94 6 | 2.1 | 26.8 9.2 | 2236 | 0.67 | 13.54 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/23/25 | 53.3 1.8 | 2244 | 50.2 1.4 | 1328 | 50.8 0.5 | 97 | 97 0 | 97 8 | 7.0 | 45.9 38.4 | 2353 | 1.36 | 24.98 | 0.010 0.013 | 33 67 | - |
| Max | 81.3 | - | 56.4 | - | 56.6 | 100 | 100 | 100 | 7.0 | 45.9 | - | 1.36 | 24.98 | 0.046 | 61 | - | |
| Avg | - | - | - | - | 49.9 | 90 | - | - | 2.9 | - | - | - | - | - | - | - | |
| Min | 53.3 | - | 38.6 | - | -6.2 | 43 | 88 | 0 | 0.2 | 12.1 | - | 0.00 | 6.38 | 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 | 12/23/25 | 56.8 1.2 | 1547 | 52.5 0.3 | 1808 | 52.3 1.8 | 99 0 | 70 28 | 4.2 2.9 | 23.8 11.7 | 2158 | SSE | 162 | 0.01 | 5.41 | 0.016 0.005 | 44 2 | - |
| Lower Bennett Valley | 12/23/25 | 59.4 1.8 | 1552 | 55.0 0.7 | 2019 | 54.2 1.5 | 100 0 | 70 24 | 4.2 2.2 | 24.9 13.4 | 2224 | SSE | 149 | 0.19 | 11.51 | 0.023 0.012 | 65 24 | 0 0 |
| Kenwood (Wildwood) | 12/23/25 | 58.2 0.5 | 1609 | 54.5 0.6 | 1951 | 55.1 1.4 | 100 0 | 83 13 | 2.5 0.8 | 13.4 3.6 | 1244 | SSW | 197 | 0.40 | 12.16 | 0.016 0.005 | 58 16 | - |
| Sonoma Valley (Bedrock) | 12/23/25 | 58.0 0.0 | 1324 | 53.9 0.9 | 2009 | 54.0 1.2 | 98 0 | 81 10 | - | - | - | - | 0.19 | 8.69 | - | - | - |
| Sonoma-West (Arnold) | 12/23/25 | 61.4 1.7 | 1513 | 55.4 1.2 | 2037 | 55.7 1.7 | 100 0 | 74 15 | 1.7 0.1 | 10.2 1.7 | 1730 | ESE | 118 | 0.41 | 7.52 | 0.018 0.003 | 70 18 | - |
| Sonoma Valley HS | 12/23/25 | 61.4 2.7 | 1519 | 55.5 1.2 | 1952 | 56.4 1.4 | 100 0 | 77 23 | 1.4 0.2 | 9.5 0.1 | 1658 | E | 92 | 0.01 | 4.73 | 0.018 0.007 | 68 30 | - |
| Sonoma East (Bundschu01) | 12/23/25 | 61.4 2.0 | 1506 | 54.2 2.3 | 0458 | 54.4 2.6 | 97 0 | 67 26 | 3.9 0.8 | 21.5 4.4 | 2305 | ESE | 102 | 0.00 | 0.13 | 0.027 0.016 | 65 31 | - |
| 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) | 12/23/25 | 61.8 2.6 | 1510 | 54.3 1.9 | 0502 | 54.6 2.1 | 97 1 | 68 27 | 1.6 0.3 | 16.5 1.0 | 2356 | SE | 143 | 0.12 | 6.07 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/23/25 | 61.1 1.7 | 1500 | 54.1 2.2 | 0455 | 54.6 2.0 | 98 0 | 71 22 | 3.2 1.1 | 16.9 0.3 | 2358 | SSE | 156 | 0.17 | 7.04 | 0.024 0.009 | 68 22 | - |
| Carneros (Ranch 71) | 12/23/25 | 60.2 2.2 | 1446 | 54.6 0.9 | 1854 | 54.7 2.2 | 100 0 | 68 32 | 5.1 0.9 | 17.3 0.4 | 2322 | E | 90 | 0.15 | 6.49 | 0.024 0.014 | 61 24 | 0 0 |
| Carneros Upper (Ranch 81) | 12/23/25 | 61.0 3.2 | 1440 | 54.6 0.9 | 1829 | 38.4 18.4 | - | - | 4.5 2.7 | 22.1 2.0 | 2350 | SE | 144 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/23/25 | 60.7 2.4 | 1445 | 54.5 1.3 | 0454 | -23.5 36.8 | 100 100 | 0 0 | 1.4 0.5 | 22.0 8.7 | 2349 | SE | 133 | 0.10 | 6.79 | 0.030 0.023 | 41 16 | - |
| Rohnert Park-West (Stony Point) | 12/23/25 | 59.0 0.1 | 1604 | 55.4 0.2 | 2020 | 55.8 0.2 | 100 1 | 84 13 | 4.2 2.6 | 25.4 10.4 | 2328 | SE | 137 | 0.00 | 1.57 | - | - | - |
| Cartograph Wines Base | 12/23/25 | 58.6 0.1 | 2238 | 54.8 0.9 | 0132 | 55.5 0.1 | 100 0 | 90 4 | 4.6 2.3 | 29.6 11.2 | 2236 | SE | 142 | 0.76 | 10.34 | 0.017 0.003 | 69 15 | - |
| Cartograph Wines Remote | 12/23/25 | 59.5 0.9 | 1336 | 54.7 0.1 | 0731 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/23/25 | 59.5 0.6 | 1335 | 54.9 0.4 | 0730 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/23/25 | 59.6 1.3 | 1547 | 55.2 0.4 | 1809 | 54.4 1.0 | 98 0 | 72 21 | 4.0 3.5 | 24.0 15.5 | 2317 | ESE | 115 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/23/25 | 58.0 1.4 | 1553 | 53.4 0.8 | 1944 | 54.0 1.6 | 100 0 | 73 27 | 4.9 2.6 | 18.5 5.5 | 2356 | SE | 130 | 0.38 | 8.90 | 0.019 0.007 | 64 20 | 0 0 |
| Petaluma (Ranch 10) | 12/23/25 | 61.4 3.1 | 1326 | 54.3 1.6 | 0615 | 55.6 1.4 | 100 0 | 79 21 | 2.0 1.3 | 8.1 1.8 | 2345 | SE | 124 | 0.38 | 6.39 | 0.020 0.009 | 74 32 | 0 0 |
| Max | 61.8 | - | 55.5 | - | 56.4 | 100 | 90 | 5.1 | 29.6 | - | - | 0.76 | 12.16 | 0.030 | 74 | - | |
| Avg | - | - | - | - | 49.2 | - | - | 3.3 | - | - | - | - | - | - | - | - | |
| Min | 56.8 | - | 52.5 | - | -23.5 | 97 | 0 | 1.4 | 8.1 | - | - | 0.00 | 0.10 | 0.016 | 41 | - |