| 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) | 12/24/25 | 57.1 1.9 | 0216 | 46.4 5.0 | 0823 | 47.6 4.6 | 88 | 100 0 | 64 30 | 6.4 | 33.9 3.2 | 0200 | SSE | 148 | 2.07 | 19.39 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/24/25 | 55.4 3.3 | 1314 | 42.7 5.8 | 0819 | 46.7 3.0 | 94 | 100 0 | 68 32 | 18.5 | 85.5 14.7 | 0201 | SSE | 168 | 2.39 | 19.93 | 0.037 0.030 | 184 135 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/24/25 | 60.0 2.5 | 1402 | 49.4 4.3 | 0838 | 49.8 40.5 | - | - | - | 5.9 | 33.9 6.1 | 0332 | ESE | 123 | 1.73 | 16.35 | 0.049 0.020 | 181 130 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/24/25 | 59.3 3.3 | 1403 | 49.2 3.9 | 0840 | 50.4 3.5 | 89 | 99 1 | 63 31 | 10.5 | 44.3 11.4 | 0302 | SSE | 168 | 2.07 | 17.22 | 0.048 0.038 | 190 147 | 0 0 |
| Geyserville-North (Hoffman) | 12/24/25 | 60.0 | 1345 | 49.9 | 0831 | 49.2 | 80 | 96 | 62 | 5.5 | 24.0 | 1943 | SE | 144 | 0.00 | 0.00 | 0.059 | 268 | 0 |
| Geyserville (Ranch 3) | 12/24/25 | 59.7 2.0 | 1110 | 50.5 4.0 | 0830 | 51.7 3.9 | 88 | 100 0 | 62 27 | 5.5 | 26.2 8.0 | 0326 | SE | 124 | 1.41 | 15.02 | 0.040 0.030 | 148 107 | 0 0 |
| Geyserville-East (Ranch 40) | 12/24/25 | 58.9 1.7 | 1237 | 49.0 3.6 | 0740 | 50.5 3.2 | 90 | 100 0 | 66 15 | 14.2 | 56.6 17.1 | 0205 | S | 181 | 1.47 | 15.24 | 0.048 0.034 | 184 135 | 0 0 |
| Geyserville-South (Nervo Station) | 12/24/25 | 59.4 2.0 | 0319 | 49.7 4.0 | 0843 | - | - | - | - | 5.5 | 27.9 9.1 | 0138 | SE | 137 | 0.91 | 11.30 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/24/25 | 62.2 3.9 | 1230 | 51.0 3.6 | 0808 | 49.5 5.1 | 79 | 93 7 | 53 26 | 3.7 | 25.7 10.5 | 0353 | S | 177 | 1.12 | 14.21 | 0.043 0.027 | 146 97 | 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) | 12/24/25 | 62.4 3.1 | 1350 | 51.5 3.4 | 0829 | 50.5 4.3 | 81 | 94 6 | 53 29 | 3.6 | 24.6 5.0 | 0332 | S | 181 | 0.85 | 14.72 | 0.043 0.026 | 144 95 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/24/25 | 62.2 5.4 | 1125 | 50.5 2.6 | 0835 | 49.6 3.7 | 81 | 94 6 | 53 31 | 5.2 | 30.2 13.2 | 0350 | S | 181 | 0.86 | 14.61 | 0.046 0.030 | 146 91 | - |
| Knights Valley (Bavarian Lion) | 12/24/25 | 60.9 3.2 | 1313 | 51.0 3.3 | 0755 | 49.2 4.3 | 81 | 94 4 | 52 28 | 5.5 | 29.6 12.4 | 0215 | SSE | 166 | 1.09 | 15.18 | 0.046 0.026 | 162 105 | - |
| Upper Dry Creek Valley | 12/24/25 | 60.2 2.5 | 1329 | 49.6 4.9 | 0846 | 50.1 4.4 | 83 | 97 2 | 57 30 | 5.3 | 25.6 6.8 | 0228 | SE | 134 | 2.03 | 16.67 | 0.051 0.037 | 193 150 | - |
| Lower Dry Creek Valley | 12/24/25 | 61.5 3.2 | 1350 | 50.5 4.5 | 0816 | 50.8 5.1 | 84 | 100 0 | 54 38 | 5.8 | 30.0 11.7 | 0336 | SSE | 153 | 1.35 | 15.89 | 0.047 0.036 | 157 112 | 0 0 |
| Max | 62.4 | - | 51.5 | - | 51.7 | 94 | 100 | 68 | 18.5 | 85.5 | - | - | 2.39 | 19.93 | 0.059 | 268 | - | |
| Avg | - | - | - | - | 49.7 | 85 | - | - | 7.2 | - | - | - | - | - | - | - | - | |
| Min | 55.4 | - | 42.7 | - | 46.7 | 79 | 93 | 52 | 3.6 | 24.0 | - | - | 0.00 | 0.00 | 0.037 | 144 | - |
| 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) | 12/24/25 | 62.2 3.5 | 1414 | 50.1 4.8 | 0837 | - | - | 96 4 | 55 32 | 5.6 | 27.2 8.9 | 0333 | 1.05 | 8.85 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/24/25 | 63.2 5.3 | 1358 | 50.8 4.1 | 0827 | 50.2 1.1 | 80 | 85 3 | 63 18 | 4.0 | 30.2 18.2 | 0339 | 0.90 | 14.59 | 0.050 0.033 | 179 118 | - |
| Windsor-East (Ranch 16) | 12/24/25 | 60.7 2.1 | 1338 | 50.7 4.2 | 0832 | 50.3 4.4 | 81 | 94 6 | 55 23 | 6.3 | 31.3 10.5 | 0339 | 0.70 | 10.78 | 0.048 0.029 | 156 106 | 0 |
| Mark West-North (Ranch 14) | 12/24/25 | 63.0 4.5 | 1353 | 50.9 4.0 | 0835 | 50.0 4.7 | 80 | 95 3 | 51 30 | 3.9 | 29.3 13.1 | 0334 | 0.68 | 12.13 | 0.017 0.013 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/24/25 | 62.2 4.1 | 1423 | 51.5 3.6 | 0837 | 50.4 4.8 | 80 | 96 4 | 54 32 | 4.8 | 25.6 10.7 | 0329 | 0.83 | 7.39 | 0.052 0.036 | 193 138 | 0 |
| Fulton-NW (Ranch 5) | 12/24/25 | 61.1 2.5 | 1307 | 50.8 4.1 | 0827 | 50.6 29.2 | 82 | 96 4 | 57 54 | 6.5 | 28.7 10.1 | 0336 | 0.73 | 12.12 | 0.053 0.020 | 180 121 | 0 |
| Windsor-South (Laughlin Rd) | 12/24/25 | 61.3 3.3 | 0327 | 50.8 4.0 | 0820 | 49.6 36.5 | 79 | 91 9 | 56 56 | - | - | - | 0.67 | 11.75 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/24/25 | 61.6 2.1 | 1416 | 50.9 4.5 | 0829 | 50.7 3.9 | 81 | 94 4 | 59 18 | 5.9 | 28.6 8.7 | 0147 | 0.71 | 11.45 | - | - | - |
| Fulton-SW (Ranch 21) | 12/24/25 | 60.7 2.5 | 0324 | 50.3 4.6 | 0830 | 50.1 56.3 | 81 | 93 7 | 58 58 | 7.2 | 32.3 9.4 | 0333 | 0.68 | 11.85 | 0.058 0.012 | 208 149 | - |
| Santa Rosa-NW (Goldfields) | 12/24/25 | 62.2 | 1423 | 51.0 | 0829 | 49.1 | 76 | 100 | 56 | 6.5 | 27.4 | 2348 | 4.03 | 12.53 | 0.094 | 317 | - |
| Goldfields Remote | 12/24/25 | 61.6 2.9 | 0327 | 51.1 4.0 | 0837 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/24/25 | 61.6 3.2 | 0327 | 50.8 4.2 | 0852 | 53.0 3.3 | 89 | 100 0 | 64 28 | 5.0 | 24.4 3.2 | 0329 | 0.63 | 10.13 | - | - | - |
| River Rd South (Denner Ranch) | 12/24/25 | 62.1 4.5 | 0315 | 50.7 4.2 | 0834 | 51.6 4.3 | 85 | 100 0 | 59 38 | 9.8 | 48.9 26.3 | 0313 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/24/25 | 62.1 3.8 | 1417 | 51.2 3.9 | 0852 | 50.4 4.7 | 80 | 95 5 | 55 30 | 3.7 | 24.6 11.5 | 0320 | 0.58 | 10.43 | 0.015 0.013 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/24/25 | 62.6 4.2 | 0234 | 51.8 3.6 | 0849 | 50.7 4.6 | 81 | 97 3 | 59 26 | - | - | - | 0.48 | 11.52 | - | - | - |
| Guerneville Rd West (Balletto) | 12/24/25 | 62.8 4.4 | 0317 | 51.8 3.5 | 0841 | 51.9 3.9 | 84 | 97 3 | 63 25 | 6.6 | 31.5 11.8 | 0328 | 0.59 | 10.64 | - | - | - |
| Sanchietti Ranch | 12/24/25 | 63.2 3.5 | 0316 | 52.4 4.0 | 0849 | 53.3 3.2 | - | 96 4 | 71 17 | 7.4 | 37.7 16.8 | 0319 | 0.63 | 11.64 | - | - | - |
| Occidental Rd (Sebastopol) | 12/24/25 | 76.5 4.8 | 0200 | 47.3 8.7 | 0001 | 55.6 0.8 | 99 | 100 0 | 56 44 | 4.9 | 44.1 28.1 | 0230 | 0.03 | 6.41 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/24/25 | 65.4 7.2 | 1223 | 50.8 4.1 | 0816 | 50.1 5.1 | 79 | 95 5 | 48 41 | 3.2 | 17.6 2.0 | 0328 | 0.83 | 14.08 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/24/25 | 61.7 1.4 | 1142 | 49.7 5.5 | 0829 | 51.6 3.1 | 86 | 97 1 | 63 20 | 4.1 | 42.7 16.3 | 0148 | 1.51 | 19.69 | - | - | - |
| Korbel (Winery) | 12/24/25 | 61.6 2.2 | 0308 | 50.5 4.9 | 0817 | 51.1 3.9 | 84 | 96 3 | 61 25 | 3.5 | 35.0 11.8 | 0217 | 1.15 | 17.94 | - | - | - |
| Forestville (Shone Farms) | 12/24/25 | 63.3 4.7 | 0244 | 49.1 5.2 | 0806 | 50.6 4.3 | 82 | 96 2 | 60 30 | 5.1 | 36.7 20.7 | 0326 | 0.93 | 15.46 | 0.050 0.037 | 176 136 | 0 |
| Forestville-NE (Ranch 30) | 12/24/25 | 62.4 5.2 | 0247 | 50.0 4.5 | 0826 | 51.8 3.3 | 87 | 98 2 | 66 27 | 6.9 | 42.2 22.1 | 0243 | 0.78 | 14.11 | 0.047 0.036 | 182 139 | - |
| Green Valley Vineyard | 12/24/25 | 61.6 2.7 | 0235 | 50.1 4.4 | 0809 | 50.5 4.0 | 83 | 96 3 | 64 23 | 5.6 | 39.9 9.6 | 0110 | 0.67 | 17.35 | 0.015 0.011 | 0 0 | - |
| Green Valley (Sanchietti) | 12/24/25 | 63.2 3.5 | 0208 | 51.6 4.0 | 0846 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/24/25 | 62.6 2.9 | 0230 | 50.3 5.2 | 0831 | 52.3 3.4 | 86 | 97 3 | 71 20 | - | - | - | 0.65 | 15.32 | - | - | - |
| Graton-South (Mill Station Rd) | 12/24/25 | 60.8 1.8 | 0113 | 56.0 1.1 | 2352 | 51.2 4.0 | 80 | 87 13 | 76 12 | 7.8 | 20.6 3.3 | 0059 | 0.22 | 13.84 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/24/25 | 59.1 1.0 | 0305 | 48.8 4.6 | 0822 | 51.0 3.5 | - | 100 0 | 67 23 | - | - | - | 0.24 | 13.53 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/24/25 | 62.1 2.0 | 0239 | 50.5 5.1 | 0844 | 52.3 3.3 | 86 | 96 3 | 67 21 | 3.3 | 27.0 5.1 | 0251 | 0.00 | 7.00 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/24/25 | 60.9 2.6 | 0225 | 50.6 3.5 | 0800 | 51.6 3.2 | 88 | 99 1 | 72 22 | 4.7 | 34.8 8.0 | 0204 | 0.63 | 14.17 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/24/25 | 54.4 1.0 | 1326 | 44.9 5.4 | 0756 | 47.9 3.0 | 93 | 97 0 | 72 25 | 6.6 | 43.0 2.9 | 0041 | 1.53 | 26.51 | 0.042 0.032 | 204 171 | - |
| Max | 76.5 | - | 56.0 | - | 55.6 | 99 | 100 | 76 | 9.8 | 48.9 | - | 4.03 | 26.51 | 0.094 | 317 | - | |
| Avg | - | - | - | - | 51.1 | 84 | - | - | 5.6 | - | - | - | - | - | - | - | |
| Min | 54.4 | - | 44.9 | - | 47.9 | 76 | 85 | 48 | 3.2 | 17.6 | - | 0.00 | 6.41 | 0.015 | 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 | 12/24/25 | 57.2 0.4 | 1326 | 48.2 4.3 | 0802 | 48.5 3.8 | 97 1 | 61 9 | 4.4 0.1 | 30.6 6.7 | 1918 | SSE | 154 | 0.00 | 5.41 | 0.043 0.027 | 175 132 | - |
| Lower Bennett Valley | 12/24/25 | 59.6 0.2 | 0310 | 49.8 5.1 | 0830 | 50.6 3.6 | 95 5 | 59 11 | 6.1 1.9 | 28.0 3.0 | 0223 | WNW | 284 | 0.72 | 12.23 | 0.046 0.023 | 160 95 | 0 0 |
| Kenwood (Wildwood) | 12/24/25 | 59.5 1.3 | 1411 | 51.0 3.5 | 0810 | 50.9 4.2 | 100 0 | 61 23 | 4.7 2.2 | 23.0 9.6 | 2321 | SSW | 212 | 1.42 | 13.58 | 0.042 0.026 | 167 108 | - |
| Sonoma Valley (Bedrock) | 12/24/25 | 59.3 1.3 | 1421 | 51.5 2.4 | 0849 | 49.5 4.5 | 95 3 | 57 24 | - | - | - | - | 0.07 | 8.76 | - | - | - |
| Sonoma-West (Arnold) | 12/24/25 | 61.8 0.4 | 1250 | 52.5 2.9 | 0848 | 51.4 4.3 | 95 5 | 58 16 | 4.5 2.8 | 29.4 19.3 | 0307 | SE | 140 | 0.31 | 7.83 | 0.051 0.033 | 196 126 | - |
| Sonoma Valley HS | 12/24/25 | 60.8 0.6 | 1418 | 52.6 2.9 | 0758 | 53.5 2.8 | 100 0 | 66 11 | 3.7 2.3 | 11.4 1.9 | 2355 | ESE | 120 | 0.01 | 4.74 | 0.042 0.024 | 176 108 | - |
| Sonoma East (Bundschu01) | 12/24/25 | 60.6 0.8 | 1336 | 52.2 2.1 | 0850 | 51.4 3.0 | 93 4 | 60 7 | 6.1 2.1 | 24.3 2.8 | 0310 | SSE | 153 | 0.00 | 0.13 | 0.049 0.022 | 170 105 | - |
| 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) | 12/24/25 | 63.4 1.6 | 1319 | 53.1 1.2 | 0748 | 51.4 3.2 | 92 4 | 57 11 | 5.1 3.5 | 26.2 9.7 | 1955 | S | 180 | 0.56 | 6.63 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/24/25 | 61.5 0.4 | 1235 | 52.3 1.8 | 0806 | 51.6 3.0 | 94 4 | 59 12 | 6.8 3.6 | 23.8 6.9 | 0318 | S | 178 | 0.90 | 7.94 | 0.052 0.028 | 189 121 | - |
| Carneros (Ranch 71) | 12/24/25 | 60.3 0.1 | 1345 | 52.0 2.6 | 0756 | 51.2 3.4 | 96 4 | 60 8 | 6.6 1.6 | 21.7 4.4 | 2004 | S | 184 | 0.70 | 7.19 | 0.045 0.021 | 158 97 | 0 0 |
| Carneros Upper (Ranch 81) | 12/24/25 | 60.2 0.8 | 1336 | 52.2 2.4 | 0753 | 42.0 3.6 | - | - | 10.7 6.2 | 35.2 13.0 | 0315 | S | 172 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/24/25 | 60.9 0.2 | 1232 | 51.4 3.1 | 0825 | 34.9 58.4 | 100 0 | 0 0 | 3.9 2.5 | 21.2 0.8 | 0233 | S | 174 | 0.85 | 7.64 | 0.043 0.013 | 102 61 | - |
| Rohnert Park-West (Stony Point) | 12/24/25 | 62.2 3.2 | 0316 | 51.8 3.5 | 0849 | 52.0 3.8 | 97 3 | 68 15 | 6.9 2.7 | 37.4 12.1 | 0315 | SSE | 154 | 0.00 | 1.57 | - | - | - |
| Cartograph Wines Base | 12/24/25 | 63.1 4.5 | 0201 | 51.6 3.2 | 0759 | 52.6 2.8 | 99 1 | 74 16 | 8.6 4.1 | 45.7 16.1 | 0144 | S | 173 | 0.71 | 11.05 | 0.046 0.029 | 177 108 | - |
| Cartograph Wines Remote | 12/24/25 | 62.6 3.1 | 0233 | 50.0 4.7 | 0821 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/24/25 | 63.3 3.9 | 0226 | 51.2 3.7 | 0804 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/24/25 | 60.5 0.9 | 1408 | 51.6 3.6 | 0815 | 50.2 4.1 | 94 5 | 57 15 | 8.0 4.0 | 28.7 4.7 | 0327 | SE | 135 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/24/25 | 58.6 0.6 | 1413 | 49.9 3.4 | 0738 | 50.4 3.6 | 100 0 | 59 14 | 6.5 1.6 | 27.3 8.8 | 2122 | SE | 127 | 0.90 | 9.80 | 0.044 0.025 | 172 108 | 0 0 |
| Petaluma (Ranch 10) | 12/24/25 | 63.3 1.9 | 1144 | 51.6 2.7 | 0829 | 51.7 3.9 | 95 5 | 56 22 | 3.3 1.4 | 16.4 8.3 | 0503 | WSW | 254 | 0.76 | 7.15 | 0.044 0.024 | 173 99 | 0 0 |
| Max | 63.4 | - | 53.1 | - | 53.5 | 100 | 74 | 10.7 | 45.7 | - | - | 1.42 | 13.58 | 0.052 | 196 | - | |
| Avg | - | - | - | - | 49.6 | - | - | 6.0 | - | - | - | - | - | - | - | - | |
| Min | 57.2 | - | 48.2 | - | 34.9 | 92 | 0 | 3.3 | 11.4 | - | - | 0.00 | 0.10 | 0.042 | 102 | - |