| 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) | 12/31/25 | 55.7 4.3 | 0955 | 47.6 3.2 | 2252 | 39.5 2.6 | 69 | 100 21 | 36 2 | 0.9 | 6.6 0.1 | 1121 | E | 93 | 0.58 | 22.27 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 12/31/25 | 55.7 2.6 | 0514 | 45.0 2.8 | 2358 | 35.4 2.5 | 64 | 100 33 | 27 1 | 4.5 | 16.2 5.5 | 1123 | ESE | 114 | 0.57 | 22.81 | 0.030 0.032 | 48 170 | 0 0 |
| Cloverdale-East (Ranch 83) | 12/31/25 | 51.9 9.0 | 1058 | 36.0 3.4 | 0223 | -4.1 34.4 | - | - | - | 1.2 | 13.8 4.3 | 0906 | NNW | 327 | 0.51 | 19.64 | 0.016 0.024 | 44 135 | 0 0 |
| Cloverdale-SE (Ranch 38) | 12/31/25 | 51.1 8.3 | 0934 | 42.9 5.6 | 0049 | 44.9 3.8 | 90 | 99 3 | 69 11 | 2.7 | 19.2 3.1 | 0904 | NNW | 342 | 0.52 | 20.82 | 0.015 0.024 | 40 141 | 0 0 |
| Geyserville-North (Hoffman) | 12/31/25 | 49.8 2.1 | 1610 | 35.9 5.8 | 0109 | 43.7 6.4 | 95 | 97 0 | 88 15 | 0.9 | 4.8 3.3 | 1207 | ESE | 105 | 0.00 | 0.00 | 0.009 0.021 | 35 122 | 0 0 |
| Geyserville (Ranch 3) | 12/31/25 | 49.4 2.1 | 2128 | 37.0 6.0 | 0150 | 44.9 6.5 | 100 | 100 0 | 100 29 | 1.0 | 5.1 2.6 | 0625 | ESE | 121 | 0.61 | 18.34 | 0.009 0.019 | 40 124 | 0 0 |
| Geyserville-East (Ranch 40) | 12/31/25 | 48.5 8.1 | 2304 | 40.1 3.7 | 0658 | 44.7 3.3 | 95 | 100 2 | 83 21 | 2.5 | 9.6 1.9 | 1624 | NNW | 330 | 0.60 | 18.33 | 0.012 0.024 | 46 150 | 0 0 |
| Geyserville-South (Nervo Station) | 12/31/25 | 50.0 2.0 | 1459 | 38.0 6.0 | 0204 | - | - | - | - | 0.4 | 5.8 0.3 | 1125 | SSE | 153 | 0.54 | 13.59 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 12/31/25 | 49.6 2.7 | 1459 | 36.8 5.8 | 0001 | 44.7 7.0 | 99 | 100 0 | 91 20 | 0.4 | 4.4 1.1 | 1618 | WSW | 244 | 0.66 | 16.79 | 0.009 0.015 | 36 106 | 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) | 12/31/25 | 50.6 2.8 | 2213 | 35.4 4.9 | 0003 | 44.4 7.1 | 98 | 100 0 | 90 23 | 0.7 | 5.6 0.4 | 1319 | WNW | 300 | 0.58 | 17.26 | 0.007 0.021 | 27 120 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 12/31/25 | 48.0 4.2 | 2225 | 36.2 5.6 | 0022 | 43.4 6.0 | 99 | 100 0 | 88 17 | 1.0 | 4.7 3.8 | 1342 | N | 351 | 0.65 | 17.20 | 0.008 0.020 | 34 122 | - |
| Knights Valley (Bavarian Lion) | 12/31/25 | 51.8 3.7 | 1644 | 35.2 4.4 | 0014 | 43.4 5.8 | 94 | 98 0 | 83 17 | 2.5 | 12.8 6.4 | 2357 | S | 174 | 0.51 | 17.55 | 0.012 0.017 | 38 120 | - |
| Upper Dry Creek Valley | 12/31/25 | 50.3 0.5 | 1539 | 36.1 4.3 | 0154 | 44.1 6.2 | 96 | 98 1 | 89 16 | 0.7 | 6.4 4.3 | 1051 | SE | 126 | 0.64 | 20.29 | 0.011 0.018 | 43 136 | - |
| Lower Dry Creek Valley | 12/31/25 | 49.7 1.6 | 2318 | 36.6 4.8 | 0127 | 44.9 6.8 | 100 | 100 0 | 91 12 | 1.0 | 6.2 5.6 | 1026 | SE | 144 | 0.66 | 18.92 | 0.010 0.009 | 44 75 | 0 0 |
| Max | 55.7 | - | 47.6 | - | 44.9 | 100 | 100 | 100 | 4.5 | 19.2 | - | - | 0.66 | 22.81 | 0.030 | 48 | - | |
| Avg | - | - | - | - | 39.5 | 92 | - | - | 1.5 | - | - | - | - | - | - | - | - | |
| Min | 48.0 | - | 35.2 | - | -4.1 | 64 | 97 | 27 | 0.4 | 4.4 | - | - | 0.00 | 0.00 | 0.007 | 27 | - |
| 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) | 12/31/25 | 50.6 2.3 | 2245 | 38.3 6.6 | 0001 | - | - | 100 0 | 89 5 | 0.8 | 9.9 3.4 | 1411 | 0.49 | 11.28 | - | - | 0 |
| Windsor-NW (Ranch 8) | 12/31/25 | 50.5 3.8 | 2222 | 38.5 5.4 | 0040 | 42.1 5.5 | 88 | 92 1 | 84 1 | 0.7 | 8.2 1.7 | 1556 | 0.56 | 16.69 | 0.013 0.004 | 45 56 | - |
| Windsor-East (Ranch 16) | 12/31/25 | 54.5 5.8 | 1507 | 37.9 7.3 | 0057 | 45.1 8.1 | 96 | 100 0 | 73 6 | 0.9 | 11.4 4.8 | 1507 | 0.50 | 12.77 | 0.011 0.006 | 38 64 | 0 |
| Mark West-North (Ranch 14) | 12/31/25 | 52.2 2.9 | 1610 | 37.0 5.6 | 0002 | 44.6 7.6 | 96 | 98 1 | 86 8 | 0.2 | 3.9 1.5 | 1243 | 0.57 | 14.35 | 0.001 0.000 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 12/31/25 | 51.2 3.7 | 1600 | 36.3 4.1 | 0015 | 44.7 7.2 | 98 | 100 0 | 91 2 | 0.5 | 6.1 0.7 | 1249 | 0.63 | 9.64 | 0.010 0.006 | 43 49 | 0 |
| Fulton-NW (Ranch 5) | 12/31/25 | 51.6 4.0 | 1634 | 35.8 5.2 | 0015 | -3.6 8.3 | 36 | 100 0 | 3 0 | 0.9 | 6.6 1.4 | 1326 | 0.62 | 14.37 | 0.015 0.010 | 43 48 | 0 |
| Windsor-South (Laughlin Rd) | 12/31/25 | 50.7 3.4 | 1542 | 36.3 3.3 | 0030 | -15.0 28.3 | 30 | 100 0 | 0 0 | - | - | - | 0.68 | 13.86 | - | - | - |
| Fulton-SE (Barnes Rd) | 12/31/25 | 51.0 2.8 | 1733 | 40.0 9.0 | 0001 | 44.9 7.8 | 96 | 98 1 | 92 10 | 1.2 | 7.7 1.8 | 2340 | 0.63 | 13.99 | - | - | - |
| Fulton-SW (Ranch 21) | 12/31/25 | 50.1 3.4 | 1535 | 35.1 3.2 | 0025 | -65.2 4.1 | 0 | 0 100 | 0 0 | 1.3 | 6.9 0.9 | 1340 | 0.66 | 13.96 | 0.035 0.009 | 48 58 | - |
| Santa Rosa-NW (Goldfields) | 12/30/25 | 48.1 15.8 | 1521 | 32.9 1.7 | 0410 | 38.1 1.0 | 98 | 100 0 | 86 45 | 1.2 | 8.0 1.4 | 1036 | 0.00 | 14.06 | 0.014 0.029 | 79 133 | - |
| Goldfields Remote | 12/30/25 | 47.6 12.5 | 1629 | 32.7 1.7 | 0409 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 12/31/25 | 50.3 3.0 | 1548 | 35.2 2.9 | 0016 | 44.9 7.0 | 100 | 100 0 | 100 3 | 0.5 | 4.9 0.5 | 1313 | 0.72 | 12.26 | - | - | - |
| River Rd South (Denner Ranch) | 12/31/25 | 50.2 3.0 | 1522 | 34.9 2.8 | 0021 | 44.9 6.4 | 100 | 100 0 | 100 0 | 1.5 | 8.8 1.5 | 1346 | - | - | - | - | - |
| West Santa Rosa (LOV Vineyard) | 12/31/25 | 50.5 2.5 | 1603 | 35.6 3.0 | 0010 | 44.3 6.4 | 98 | 100 0 | 93 8 | 0.9 | 6.8 2.2 | 1257 | 0.08 | 11.97 | 0.001 0.000 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 12/31/25 | 50.5 2.6 | 1612 | 36.4 2.7 | 0004 | 44.8 6.0 | 98 | 100 0 | 92 6 | - | - | - | 0.01 | 12.92 | - | - | - |
| Guerneville Rd West (Balletto) | 12/31/25 | 50.7 3.5 | 1551 | 35.8 2.2 | 0005 | 44.9 6.9 | 99 | 100 0 | 97 6 | 0.9 | 6.6 0.2 | 1239 | 0.76 | 12.95 | - | - | - |
| Sanchietti Ranch | 12/31/25 | 51.0 2.3 | 1624 | 37.2 3.9 | 0019 | 45.8 6.2 | - | 100 0 | 96 6 | 1.4 | 8.2 1.1 | 1306 | 0.83 | 14.14 | - | - | - |
| Occidental Rd (Sebastopol) | 12/31/25 | 50.4 3.8 | 1604 | 35.8 4.0 | 0043 | 43.0 4.4 | 93 | 100 0 | 76 24 | 1.3 | 7.5 1.5 | 1315 | 0.01 | 6.58 | - | - | - |
| Lower Westside Rd (Ranch 12) | 12/31/25 | 50.5 0.5 | 2305 | 39.1 5.5 | 0001 | 44.9 6.6 | 97 | 100 0 | 88 13 | 0.4 | 5.3 0.7 | 1401 | 0.55 | 16.08 | - | - | 0 |
| Guerneville (Laughlin Rd) | 12/31/25 | 50.0 1.3 | 1711 | 39.9 4.5 | 0138 | 45.0 4.9 | 97 | 98 0 | 88 9 | 0.3 | 3.9 1.2 | 0128 | 0.80 | 22.99 | - | - | - |
| Korbel (Winery) | 12/31/25 | 50.0 2.5 | 2337 | 40.3 3.2 | 0125 | 45.5 4.5 | 98 | 100 0 | 90 5 | 0.1 | 2.7 5.2 | 2226 | 0.72 | 20.66 | - | - | - |
| Forestville (Shone Farms) | 12/31/25 | 52.8 5.3 | 2028 | 36.2 3.5 | 0048 | 44.6 6.4 | 96 | 98 0 | 90 1 | 1.3 | 7.6 1.2 | 1504 | 0.64 | 17.81 | 0.011 0.005 | 43 44 | 0 |
| Forestville-NE (Ranch 30) | 12/31/25 | 50.2 2.5 | 1518 | 37.6 3.2 | 0036 | 44.9 5.9 | 100 | 100 0 | 97 0 | 0.8 | 5.8 0.4 | 1240 | 0.72 | 16.34 | 0.010 0.004 | 44 37 | - |
| Green Valley Vineyard | 12/31/25 | 50.7 3.5 | 1452 | 37.4 5.2 | 0022 | 44.4 5.8 | 96 | 99 0 | 85 4 | 0.5 | 3.9 2.4 | 1250 | 0.94 | 19.95 | 0.001 0.016 | 0 91 | - |
| Green Valley (Sanchietti) | 12/31/25 | 50.9 2.0 | 1605 | 35.2 4.2 | 0020 | - | - | - | - | - | - | - | - | - | - | - | - |
| Keefer Ranch (Green Valley) | 12/31/25 | 50.8 3.2 | 1607 | 34.4 4.6 | 0012 | 44.7 7.7 | 99 | 100 0 | 95 4 | - | - | - | 0.86 | 17.73 | - | - | - |
| Graton-South (Mill Station Rd) | 12/31/25 | 50.0 2.8 | 1623 | 34.3 4.4 | 0047 | 44.2 7.2 | 99 | 100 0 | 95 5 | 0.1 | 3.5 0.8 | 1316 | 0.96 | 16.08 | - | - | 0 |
| Occidental (Horseshoe Bend) | 12/31/25 | 50.5 0.1 | 1401 | 40.9 3.4 | 0054 | 43.8 3.9 | - | 100 3 | 74 9 | - | - | - | 0.12 | 14.77 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 12/31/25 | 49.8 2.0 | 1646 | 33.8 4.6 | 0001 | 44.2 7.8 | 98 | 99 1 | 96 8 | 0.5 | 5.8 0.4 | 1302 | 0.00 | 7.01 | - | - | - |
| Sebastopol Hills (Burnside Rd) | 12/31/25 | 49.0 2.0 | 2313 | 39.4 4.1 | 0256 | 44.6 3.8 | 100 | 100 0 | 94 3 | 0.3 | 6.4 0.5 | 1346 | 1.01 | 16.59 | - | - | - |
| Seaview/Fort Ross (Hirsch) | 12/31/25 | 57.8 3.0 | 0451 | 46.7 2.8 | 2348 | 37.5 3.5 | 65 | 97 39 | 27 5 | 9.4 | 23.5 5.9 | 1500 | 0.94 | 29.34 | 0.050 0.020 | 45 154 | - |
| Max | 57.8 | - | 46.7 | - | 45.8 | 100 | 100 | 100 | 9.4 | 23.5 | - | 1.01 | 29.34 | 0.050 | 48 | - | |
| Avg | - | - | - | - | 36.2 | 87 | - | - | 1.1 | - | - | - | - | - | - | - | |
| Min | 49.0 | - | 33.8 | - | -65.2 | 0 | 0 | 0 | 0.1 | 2.7 | - | 0.00 | 6.58 | 0.001 | 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 | 12/31/25 | 59.1 1.9 | 1024 | 43.8 6.8 | 0116 | 40.6 3.3 | 93 1 | 29 5 | 2.6 1.0 | 16.9 4.8 | 1639 | N | 350 | 0.00 | 5.41 | 0.019 0.014 | 36 127 | - |
| Lower Bennett Valley | 12/31/25 | 53.9 5.1 | 1406 | 37.7 10.2 | 0001 | 44.6 8.3 | 100 0 | 75 4 | 2.4 1.0 | 15.5 7.0 | 1553 | NNW | 344 | 0.72 | 14.38 | 0.014 0.010 | 38 102 | 0 0 |
| Kenwood (Wildwood) | 12/31/25 | 54.1 4.6 | 1406 | 40.2 9.3 | 0307 | 44.3 5.9 | 100 0 | 72 7 | 3.7 0.9 | 18.0 6.6 | 1639 | SSW | 206 | 0.60 | 15.92 | 0.019 0.002 | 50 76 | - |
| Sonoma Valley (Bedrock) | 12/31/25 | 49.9 0.5 | 2213 | 39.4 10.9 | 0232 | 43.4 6.4 | 98 1 | 84 9 | - | - | - | - | 0.02 | 8.99 | - | - | - |
| Sonoma-West (Arnold) | 12/31/25 | 51.0 2.4 | 1557 | 40.7 10.4 | 0424 | 45.1 6.3 | 100 0 | 84 17 | 1.1 0.1 | 6.3 1.2 | 1641 | SSW | 211 | 0.48 | 11.12 | 0.012 0.011 | 48 78 | - |
| Sonoma Valley HS | 12/31/25 | 51.1 0.8 | 2314 | 41.1 9.7 | 0229 | 46.0 6.6 | 100 0 | 92 10 | 0.7 0.3 | 8.9 4.3 | 1553 | E | 98 | 0.01 | 4.82 | 0.010 0.012 | 42 76 | - |
| Sonoma East (Bundschu01) | 12/31/25 | 53.1 1.0 | 1619 | 41.0 11.5 | 0402 | 44.7 6.9 | 98 1 | 74 1 | 1.9 0.2 | 15.8 7.7 | 2350 | E | 101 | 0.00 | 0.13 | 0.014 0.009 | 43 85 | - |
| Schellville (Sasaki) | 12/29/25 | 59.7 | 1210 | 33.9 | 2316 | 38.2 | 97 | 42 | 1.3 | 9.5 | 1437 | NNE | 20 | 0.00 | 0.00 | - | - | 0 |
| Sonoma-SE (Napoli) | 12/31/25 | 53.3 1.1 | 1609 | 41.0 10.1 | 0405 | 44.7 6.7 | 96 1 | 72 2 | 1.6 1.0 | 15.2 5.7 | 2148 | E | 89 | 0.59 | 8.51 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 12/31/25 | 51.3 0.2 | 1540 | 39.6 9.1 | 0001 | 44.5 6.5 | 97 1 | 78 4 | 2.8 0.2 | 11.8 1.0 | 1109 | SE | 129 | 0.98 | 10.79 | 0.015 0.013 | 47 110 | - |
| Carneros (Ranch 71) | 12/31/25 | 52.8 1.3 | 1420 | 40.4 7.2 | 0126 | 44.5 5.1 | 100 0 | 69 5 | 5.1 2.5 | 18.9 8.6 | 1550 | NE | 43 | 0.73 | 9.43 | 0.016 0.009 | 42 96 | 0 0 |
| Carneros Upper (Ranch 81) | 12/31/25 | 52.2 0.2 | 1408 | 39.9 5.9 | 0151 | 34.5 15.0 | - | - | 6.3 2.6 | 19.4 8.9 | 2101 | ENE | 57 | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/31/25 | 51.0 0.2 | 1520 | 40.2 8.2 | 0201 | 4.6 11.5 | 100 0 | 0 0 | 2.2 0.9 | 10.7 2.3 | 2338 | NE | 39 | 0.76 | 9.61 | 0.014 0.015 | 32 72 | - |
| Rohnert Park-West (Stony Point) | 12/31/25 | 49.6 0.5 | 2342 | 38.6 6.9 | 0141 | 44.7 5.1 | 99 1 | 95 8 | 1.0 1.3 | 8.8 1.6 | 1031 | ESE | 118 | 0.00 | 1.57 | - | - | - |
| Cartograph Wines Base | 12/31/25 | 49.8 1.5 | 2332 | 39.4 3.7 | 0242 | 45.0 3.8 | 100 0 | 92 3 | 2.3 0.7 | 11.5 1.8 | 1105 | ESE | 123 | 0.97 | 13.34 | 0.010 0.011 | 46 80 | - |
| Cartograph Wines Remote | 12/31/25 | 50.1 0.9 | 2247 | 38.6 6.1 | 0134 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 12/31/25 | 50.2 0.8 | 2215 | 36.6 7.8 | 0135 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 12/31/25 | 50.6 1.2 | 2317 | 40.1 10.5 | 0159 | 43.9 5.9 | 97 1 | 76 0 | 2.6 1.5 | 12.1 3.0 | 2309 | SE | 136 | 0.00 | 0.10 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 12/31/25 | 48.7 0.0 | 2014 | 39.4 4.5 | 0331 | 43.8 4.9 | 100 0 | 88 33 | 4.5 0.4 | 14.8 0.6 | 1654 | E | 93 | 0.63 | 12.00 | 0.010 0.011 | 44 80 | 0 0 |
| Petaluma (Ranch 10) | 12/31/25 | 50.6 1.8 | 1959 | 40.6 10.1 | 0013 | 44.9 5.8 | 100 0 | 86 12 | 3.0 0.4 | 8.4 0.1 | 2245 | SE | 125 | 0.46 | 8.82 | 0.011 0.012 | 42 80 | 0 0 |
| Max | 59.1 | - | 43.8 | - | 46.0 | 100 | 95 | 6.3 | 19.4 | - | - | 0.98 | 15.92 | 0.019 | 50 | - | |
| Avg | - | - | - | - | 41.4 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 48.7 | - | 36.6 | - | 4.6 | 93 | 0 | 0.7 | 6.3 | - | - | 0.00 | 0.10 | 0.010 | 32 | - |