| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Montesol | 12/8/25 | 67.5 3.4 | 1349 | 39.1 1.0 | 0120 | - | - | - | - | - | - | - | 0.00 | 11.97 | - | - | - |
| Pope Valley (Weeks Lake) | 12/8/25 | 68.2 17.5 | 1428 | 34.8 2.3 | 2134 | 40.6 2.1 | 100 0 | 40 43 | 1.0 | 5.9 0.0 | 1051 | SE | 142 | 0.01 | 5.54 | 0.041 0.024 | 204 113 | 0 0 |
| Whiskey River Winery | 12/8/25 | 63.8 15.6 | 1422 | 34.5 4.5 | 2154 | 40.6 1.4 | 99 0 | 50 42 | 1.6 | 7.9 2.3 | 1545 | WSW | 241 | 0.01 | 6.14 | - | - | - |
| Dollarhide Base | 12/8/25 | 64.5 14.9 | 1408 | 38.9 2.4 | 0728 | 44.4 0.4 | 100 0 | 62 33 | 1.7 | 9.2 2.9 | 1545 | NE | 35 | 0.01 | 4.81 | 0.044 0.027 | 210 115 | - |
| Dollarhide 1AS Remote | 12/8/25 | 65.9 16.2 | 1405 | 35.0 6.3 | 2120 | 42.0 0.6 | 95 0 | 58 35 | 0.9 | 6.6 2.1 | 1456 | E | 92 | - | - | - | - | - |
| Dollarhide 17B Remote | 12/8/25 | 66.8 15.6 | 1452 | 37.8 1.4 | 2204 | 43.6 0.4 | 100 0 | 55 36 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 12/8/25 | 64.2 12.8 | 1402 | 34.2 5.6 | 2135 | 42.5 0.8 | 100 0 | 57 31 | - | - | - | - | - | - | - | - | - |
| Angwin | 12/8/25 | 62.2 0.1 | 1355 | 46.5 0.8 | 0049 | 37.4 1.6 | 81 10 | 33 7 | 6.2 | 15.7 1.9 | 0253 | NNW | 345 | 0.00 | 10.82 | 0.046 0.014 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 12/8/25 | 64.1 0.5 | 1503 | 39.5 2.3 | 2220 | - | - | - | 2.5 | 11.4 0.4 | 0711 | NNE | 32 | - | - | - | - | - |
| Deer Park | 12/8/25 | 49.8 4.0 | 1605 | 38.2 0.6 | 0754 | 41.7 0.1 | 99 0 | 84 14 | 1.7 | 7.5 0.4 | 1326 | S | 183 | 0.01 | 6.23 | 0.016 0.003 | 88 22 | - |
| Lower Chiles Valley (Brown) | 12/8/25 | 57.6 1.0 | 1330 | 35.0 2.5 | 2334 | 42.0 1.1 | 100 0 | 69 0 | 3.2 | 13.7 2.4 | 1412 | SSW | 194 | 0.00 | 1.47 | 0.037 0.004 | 201 15 | 0 0 |
| Moss Creek Vineyard/Reservior | 12/7/25 | 55.2 1.9 | 1353 | 36.9 0.9 | 0750 | 40.8 0.8 | 100 0 | 68 1 | - | - | - | - | 0.00 | 6.14 | - | - | - |
| Max | 68.2 | - | 46.5 | - | 44.4 | 100 | 84 | 6.2 | 15.7 | - | - | 0.01 | 11.97 | 0.046 | 210 | - | |
| Avg | - | - | - | - | 41.7 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 49.8 | - | 34.2 | - | 37.4 | 81 | 33 | 0.9 | 5.9 | - | - | 0.00 | 1.47 | 0.016 | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calistoga-North | 12/8/25 | 49.7 1.1 | 1406 | 38.1 2.1 | 2015 | 42.4 0.7 | 100 0 | 89 2 | - | - | - | - | 0.00 | 7.37 | - | - | - |
| Fotsch (Maple Lane) | 12/8/25 | 51.6 4.1 | 1404 | 36.7 3.6 | 1913 | 41.2 1.0 | 97 0 | 76 11 | 1.7 | 9.4 2.8 | 1354 | SE | 143 | 0.01 | 6.44 | - | - | - |
| Diamond Mtn (Schramsberg) | 12/8/25 | 46.1 1.0 | 1314 | 37.1 0.3 | 0726 | 41.3 0.5 | 100 0 | 100 0 | - | - | - | - | 0.01 | 6.79 | - | - | - |
| Diamond Mtn (McEachran) | 12/8/25 | 47.0 0.9 | 1449 | 38.6 0.4 | 0721 | 41.6 0.4 | 100 0 | 94 4 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 12/8/25 | 48.2 1.7 | 1416 | 39.0 1.9 | 1945 | 40.8 0.9 | 95 0 | 85 6 | 1.3 | 9.4 2.6 | 1359 | SSE | 160 | 0.01 | 5.99 | 0.016 0.004 | 71 20 | - |
| St. Helena (NVV Office) | 12/8/25 | 50.2 3.5 | 1522 | 39.1 2.8 | 1938 | - | - | - | 0.6 | 5.8 1.1 | 1353 | SSE | 166 | 0.00 | 5.85 | - | - | - |
| Tiara Fria (East St. Helena) | 12/8/25 | 51.9 5.1 | 1526 | 37.2 4.6 | 1929 | 41.5 1.4 | 97 0 | 76 14 | 1.0 | 6.5 2.3 | 1347 | SE | 130 | 0.00 | 5.68 | - | - | - |
| Rutherford Hill Estate | 12/8/25 | 54.8 5.1 | 1539 | 41.2 0.0 | 0702 | 42.8 0.2 | 100 0 | 70 15 | 0.8 | 6.4 1.1 | 1348 | SSE | 165 | 0.00 | 4.01 | 0.018 0.005 | 97 29 | 0 0 |
| Rutherford-North (Mee Ln) | 12/8/25 | 51.6 6.4 | 1456 | 34.2 1.4 | 2008 | 38.2 0.1 | 97 0 | 75 12 | 1.1 | 7.0 1.3 | 1315 | SW | 230 | 0.00 | 5.08 | 0.018 0.005 | 97 31 | 0 0 |
| Rutherford (STS) | 12/8/25 | 56.8 8.7 | 1430 | 35.9 6.3 | 2026 | 40.3 0.4 | 91 0 | 72 13 | 0.9 | 6.3 0.3 | 1417 | E | 101 | 0.00 | 5.73 | 0.022 0.005 | 108 37 | - |
| Oakville-NE (Ranch 88) | 12/8/25 | 56.6 6.6 | 1457 | 35.5 4.7 | 1931 | 40.6 1.3 | 96 0 | 60 17 | 0.6 | 6.9 0.8 | 1341 | S | 169 | 0.00 | 5.53 | 0.022 0.006 | 115 33 | 0 0 |
| OV561-East | 12/8/25 | 58.0 6.6 | 1459 | 36.1 6.3 | 1953 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 12/8/25 | 54.6 5.4 | 1452 | 35.6 6.3 | 2024 | 41.1 1.3 | 97 0 | 64 17 | 1.3 | 8.7 3.1 | 1333 | ESE | 104 | 0.00 | 5.45 | 0.024 0.007 | 123 39 | - |
| OV518-West | 12/8/25 | 52.5 4.6 | 1436 | 36.5 5.8 | 2028 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 12/8/25 | 55.5 6.0 | 1522 | 35.4 5.9 | 1934 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 12/8/25 | 56.1 7.2 | 1447 | 36.5 4.8 | 2000 | 41.9 0.9 | 99 0 | 65 22 | 1.2 | 7.2 2.5 | 1340 | E | 89 | 0.00 | 5.85 | 0.022 0.008 | 110 46 | - |
| To Kalon Remote (TKN5) | 12/8/25 | 54.9 4.5 | 1447 | 36.0 5.5 | 2037 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 12/8/25 | 52.6 2.1 | 1438 | 35.6 5.6 | 2007 | 40.8 1.2 | 96 1 | 67 7 | 1.3 | 10.0 4.0 | 1420 | S | 180 | 0.00 | 4.74 | 0.030 0.004 | 240 26 | - |
| Stags Leap Dist (Silverado Vineyards) | 12/8/25 | 52.8 0.8 | 1454 | 36.1 5.0 | 1951 | 40.6 1.1 | 96 1 | 67 3 | 0.9 | 10.1 4.6 | 1419 | E | 100 | 0.00 | 6.00 | 0.023 0.004 | 104 14 | - |
| Borreo (Soda Canyon) | 12/8/25 | 52.1 0.2 | 1417 | 36.6 3.0 | 1913 | 40.6 0.6 | 99 0 | 72 1 | 1.2 | 5.4 0.4 | 1430 | S | 171 | 0.01 | 6.83 | 0.022 0.000 | 122 1 | - |
| Wappo Hill Floor | 12/8/25 | 55.3 0.9 | 1338 | 36.2 4.9 | 1948 | 42.3 1.0 | 100 0 | 67 1 | 1.3 | 9.1 3.7 | 1421 | SSE | 162 | 0.00 | 5.87 | 0.027 0.005 | 135 22 | - |
| Stags Leap Dist (Chimney Rock) | 12/8/25 | 55.3 0.1 | 1410 | 37.0 4.8 | 1954 | - | - | - | 1.2 | 8.8 2.4 | 1423 | SSW | 196 | 0.00 | 6.24 | 0.028 0.001 | 111 9 | 0 0 |
| Yountville-South (Ranch 87) | 12/8/25 | 53.6 0.3 | 1354 | 36.5 5.2 | 1951 | 42.6 0.8 | 100 0 | 69 1 | 1.0 | 8.1 3.5 | 1410 | SSE | 153 | 0.00 | 5.90 | 0.028 0.005 | 143 23 | - |
| Yountville-SE (Ranch 85) | 12/8/25 | 53.8 0.1 | 1447 | 38.0 3.9 | 1955 | 42.5 0.7 | 100 0 | 70 0 | 0.9 | 9.6 4.4 | 1353 | SSE | 155 | 0.00 | 5.90 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 12/8/25 | 53.8 0.9 | 1412 | 37.7 4.2 | 1938 | 41.4 0.8 | 95 0 | 66 1 | 1.0 | 8.2 1.7 | 1457 | SSW | 204 | 0.00 | 6.43 | 0.030 0.004 | 148 25 | - |
| Napa-NW (Ranch 54) | 12/8/25 | 51.8 1.0 | 1305 | 37.7 3.5 | 1923 | 41.9 0.7 | 100 0 | 69 0 | 1.1 | 7.8 1.3 | 1423 | SSW | 206 | 0.00 | 6.63 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 12/8/25 | 53.7 0.9 | 1405 | 40.1 3.0 | 1915 | 42.7 0.4 | 100 0 | 66 1 | 0.9 | 8.8 2.2 | 1410 | SSW | 199 | 0.00 | 6.44 | 0.019 0.000 | 91 8 | - |
| Max | 58.0 | - | 41.2 | - | 42.8 | 100 | 100 | 1.7 | 10.1 | - | - | 0.01 | 7.37 | 0.030 | 240 | - | |
| Avg | - | - | - | - | 41.4 | - | - | 1.1 | - | - | - | - | - | - | - | - | |
| Min | 46.1 | - | 34.2 | - | 38.2 | 91 | 60 | 0.6 | 5.4 | - | - | 0.00 | 4.01 | 0.016 | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mt. Veeder | 12/8/25 | 57.2 4.0 | 1140 | 45.1 6.8 | 0346 | 41.4 1.3 | 90 10 | 51 13 | 1.2 | 7.2 0.4 | 0407 | NNE | 13 | 0.00 | 8.39 | 0.035 0.003 | 146 6 | 0 0 |
| Mount George (Napa East) | 12/8/25 | 53.5 0.5 | 1403 | 38.2 6.0 | 2117 | 42.8 1.1 | 100 3 | 73 2 | 0.9 | 7.4 0.9 | 1427 | W | 268 | 0.00 | 2.99 | 0.029 0.005 | 148 28 | - |
| Napa-East (Palmaz 300') | 12/8/25 | 55.1 1.9 | 1405 | 37.4 4.0 | 2135 | 41.0 0.9 | 100 0 | 65 5 | 0.9 | 7.6 1.8 | 1411 | WSW | 240 | 0.00 | 6.01 | 0.025 0.003 | 124 18 | - |
| Napa-East (Palmaz 1200') | 12/8/25 | 51.0 1.8 | 1335 | 36.9 0.1 | 2228 | 37.6 0.9 | 100 0 | 3 51 | 3.5 | 13.4 1.5 | 1316 | NE | 40 | - | - | 0.035 0.005 | 200 40 | - |
| Napa-East (Palmaz 1400') | 12/8/25 | 52.6 0.7 | 1212 | 35.5 0.9 | 2304 | 39.9 0.1 | 100 0 | 75 6 | 5.0 | 12.3 0.1 | 0217 | NNE | 18 | 0.01 | 8.10 | 0.034 0.005 | 212 28 | - |
| Wooden Valley | 4/30/25 | 78.8 0.4 | 1303 | 51.0 7.3 | 0600 | 49.9 1.6 | 90 5 | 34 2 | 4.0 | 16.6 0.3 | 0031 | SW | 220 | 0.00 | 30.39 | 0.212 0.008 | 668 2 | 0 0 |
| Napa-West Upper (Truchard) | 12/8/25 | 51.0 1.1 | 1527 | 41.5 0.3 | 0751 | - | - | - | 1.5 | 10.3 2.9 | 1405 | SSW | 192 | 0.00 | 6.09 | 0.026 0.009 | 111 7 | 0 0 |
| Napa-West Lower (Truchard) | 12/8/25 | 51.6 2.1 | 1519 | 37.4 5.3 | 1834 | 41.1 1.0 | 94 0 | 73 7 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 12/8/25 | 51.8 3.1 | 1505 | 42.7 0.1 | 1826 | 43.1 0.6 | 100 0 | 79 7 | 0.5 | 8.8 2.7 | 1328 | S | 175 | 0.00 | 2.34 | 0.011 0.002 | 60 11 | 0 0 |
| Toyon Remote 1 | 12/8/25 | 49.6 0.5 | 1439 | 38.1 4.5 | 1834 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 12/8/25 | 50.9 1.9 | 1445 | 38.2 4.5 | 1803 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 12/8/25 | 50.9 1.5 | 1451 | 38.2 4.4 | 1824 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 12/8/25 | 50.2 2.2 | 1457 | 39.7 2.5 | 1834 | 41.5 0.7 | 96 0 | 75 7 | 1.4 | 7.5 0.8 | 1331 | SSE | 163 | 0.00 | 5.78 | 0.019 0.002 | 93 15 | - |
| Carneros (Saintsbury) | 12/8/25 | 52.2 5.0 | 1509 | 40.3 0.3 | 1949 | 41.5 0.0 | 100 0 | 72 11 | 1.6 | 11.2 4.6 | 1405 | SSE | 154 | 0.00 | 1.64 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 12/8/25 | 52.4 3.7 | 1538 | 38.0 4.0 | 1755 | 41.4 0.3 | - | - | 1.4 | 8.0 0.4 | 1453 | N | 354 | 0.00 | 5.62 | 0.021 0.002 | 104 19 | - |
| Suscol Mtn (Ranch 93) | 12/8/25 | 48.1 0.5 | 1309 | 37.5 1.4 | 2344 | 40.4 0.2 | 100 0 | 82 3 | 3.4 | 15.7 2.7 | 1323 | ESE | 106 | 0.00 | 5.99 | - | - | - |
| Suscol Upper (Ranch 92) | 12/8/25 | 51.4 3.3 | 1418 | 38.4 1.3 | 0001 | 41.1 0.2 | 100 0 | 73 10 | 1.8 | 15.2 2.1 | 1331 | E | 88 | 0.00 | 5.73 | - | - | 0 0 |
| Stanly (Ranch 45) | 12/8/25 | 55.1 7.6 | 1524 | 36.9 3.7 | 1910 | 40.1 0.4 | 96 1 | 63 17 | 1.7 | 13.0 4.2 | 1415 | SE | 136 | 0.00 | 6.59 | 0.024 0.004 | 120 30 | 0 0 |
| Carneros Upper (Ranch 81) | 12/8/25 | 48.5 | 1437 | 37.9 | 0107 | -4.4 | - | - | 2.6 | 10.7 | 1516 | ESE | 123 | - | - | - | - | - |
| Carneros (Mitsuko) | 12/8/25 | 51.5 3.6 | 1532 | 40.8 1.7 | 1837 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/7/25 | 47.6 1.6 | 1421 | 42.0 4.3 | 0731 | 42.8 0.8 | 100 0 | 85 6 | 1.2 | 6.6 2.1 | 0151 | NNE | 32 | 0.00 | 4.76 | 0.015 0.003 | 60 12 | - |
| Carneros (Milton Rd) | 12/8/25 | 49.7 1.3 | 1454 | 38.0 5.1 | 1944 | 41.5 0.8 | 95 2 | 78 3 | - | - | - | - | 0.00 | 4.63 | - | - | - |
| Max | 57.2 | - | 45.1 | - | 43.1 | 100 | 82 | 5.0 | 15.7 | - | - | 0.01 | 8.39 | 0.035 | 212 | - | |
| Avg | - | - | - | - | 38.0 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 48.1 | - | 35.5 | - | -4.4 | 90 | 3 | 0.5 | 7.2 | - | - | 0.00 | 1.64 | 0.011 | 60 | - |