| 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 | 2/20/26 | 49.0 1.4 | 1508 | 23.9 3.8 | 0622 | - | - | - | - | - | - | - | 0.00 | 40.22 | - | - | - |
| Pope Valley (Weeks Lake) | 2/20/26 | 53.0 0.1 | 1302 | 22.7 6.7 | 0545 | 28.7 4.3 | 100 0 | 34 1 | 0.9 | 8.8 17.8 | 1241 | NE | 55 | 0.00 | 21.11 | 0.056 0.029 | 265 79 | 0 0 |
| Whiskey River Winery | 12/13/25 | 52.8 3.6 | 1548 | 37.3 0.3 | 0759 | 36.3 2.0 | 88 11 | 68 4 | 0.0 | 0.0 2.4 | 0001 | SE | 128 | 0.00 | 7.07 | - | - | - |
| Dollarhide Base | 2/20/26 | 52.9 0.4 | 1547 | 26.9 6.0 | 0652 | 33.3 2.3 | 100 2 | 36 8 | 2.1 | 11.0 23.8 | 1413 | E | 93 | 0.00 | 18.89 | 0.057 0.030 | 272 90 | - |
| Dollarhide 1AS Remote | 2/20/26 | 54.6 0.6 | 1633 | 23.8 4.8 | 0517 | 31.0 4.2 | 96 1 | 37 6 | 1.2 | 9.4 14.5 | 1329 | E | 82 | - | - | - | - | - |
| Dollarhide 17B Remote | 2/20/26 | 55.4 1.2 | 1636 | 24.7 6.1 | 0556 | 32.1 4.0 | 100 1 | 39 5 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 2/20/26 | 56.1 2.3 | 1617 | 22.6 5.1 | 0551 | 30.6 4.3 | 100 1 | 34 7 | - | - | - | - | - | - | - | - | - |
| Angwin | 2/20/26 | 45.1 1.0 | 1513 | 31.2 0.3 | 0217 | 27.5 3.2 | 84 16 | 37 6 | 4.3 | 10.9 16.6 | 2240 | ESE | 123 | 0.00 | 37.19 | 0.019 0.001 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 2/20/26 | 47.0 0.0 | 1520 | 23.5 2.5 | 0406 | - | - | - | 2.0 | 8.0 13.5 | 1559 | SSE | 154 | - | - | - | - | - |
| Deer Park | 2/20/26 | 53.7 1.4 | 1617 | 32.8 4.6 | 0331 | 31.7 3.6 | 88 8 | 34 5 | 2.9 | 10.2 17.2 | 1322 | SSE | 162 | 0.00 | 22.91 | 0.051 0.017 | 193 66 | - |
| Lower Chiles Valley (Brown) | 2/20/26 | 54.2 2.7 | 1603 | 24.1 4.2 | 0647 | 30.1 3.4 | 100 4 | 34 1 | 1.6 | 9.8 12.3 | 1027 | ENE | 62 | 0.00 | 19.98 | 0.052 0.020 | 238 58 | 0 0 |
| Moss Creek Vineyard/Reservior | 2/20/26 | 54.9 0.2 | 1609 | 27.3 4.9 | 0627 | 32.3 1.8 | 100 7 | 44 12 | - | - | - | - | 0.00 | 22.82 | - | - | - |
| Max | 56.1 | - | 32.8 | - | 33.3 | 100 | 44 | 4.3 | 11.0 | - | - | 0.00 | 40.22 | 0.057 | 272 | - | |
| Avg | - | - | - | - | 30.8 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 45.1 | - | 22.6 | - | 27.5 | 84 | 34 | 0.9 | 8.0 | - | - | 0.00 | 18.89 | 0.019 | 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 | 2/20/26 | 55.5 0.6 | 1311 | 27.2 4.9 | 0652 | 32.7 5.5 | 100 0 | 41 5 | - | - | - | - | 0.00 | 26.98 | - | - | 0 0 |
| Fotsch (Maple Lane) | 2/20/26 | 54.7 1.3 | 1526 | 27.8 4.7 | 0644 | 31.9 4.4 | 96 0 | 32 3 | 1.5 | 8.5 22.1 | 1514 | SE | 136 | 0.00 | 25.00 | - | - | - |
| Diamond Mtn (Schramsberg) | 2/20/26 | 50.3 1.7 | 1312 | 32.4 3.8 | 0358 | 31.6 4.3 | 92 8 | 46 3 | - | - | - | - | 0.00 | 25.51 | - | - | - |
| Diamond Mtn (McEachran) | 2/20/26 | 52.8 1.5 | 1325 | 31.9 3.8 | 0643 | 33.5 2.2 | 95 4 | 43 1 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 2/20/26 | 55.1 1.1 | 1319 | 28.2 4.7 | 0617 | 31.7 4.2 | 100 0 | 33 2 | 1.6 | 9.0 12.1 | 1341 | SSE | 164 | 0.00 | 25.73 | 0.050 0.026 | 206 96 | 0 0 |
| St. Helena (NVV Office) | 2/20/26 | 55.0 0.5 | 1459 | 28.8 5.6 | 0702 | - | - | - | 1.0 | 7.3 11.5 | 1336 | S | 188 | 0.00 | 22.93 | - | - | - |
| Tiara Fria (East St. Helena) | 2/20/26 | 54.2 0.3 | 1549 | 29.0 4.8 | 0645 | 32.6 3.7 | 96 1 | 34 6 | 1.6 | 8.3 15.0 | 1335 | SSE | 160 | 0.00 | 21.32 | - | - | - |
| Rutherford Hill Estate | 2/20/26 | 56.6 1.1 | 1611 | 32.9 3.6 | 0437 | 33.4 3.2 | 91 9 | 34 5 | 1.5 | 7.0 18.0 | 1230 | SW | 236 | 0.00 | 20.96 | 0.051 0.023 | 225 99 | 0 0 |
| Rutherford-North (Mee Ln) | 2/20/26 | 55.9 1.5 | 1529 | 27.7 4.7 | 0647 | 32.6 3.0 | 100 1 | 35 4 | 1.9 | 7.2 21.3 | 1508 | SE | 128 | 0.00 | 20.04 | 0.051 0.033 | 223 107 | 0 0 |
| Rutherford (STS) | 2/20/26 | 57.3 1.5 | 1534 | 29.1 2.9 | 0652 | 34.2 3.2 | 93 0 | 49 3 | 1.9 | 7.5 21.0 | 1555 | ESE | 122 | 0.00 | 21.16 | 0.055 0.033 | 257 132 | - |
| Oakville-NE (Ranch 88) | 2/20/26 | 55.2 0.7 | 1539 | 29.7 2.0 | 0548 | 32.1 3.4 | 95 1 | 36 1 | 1.2 | 7.6 19.6 | 1545 | S | 174 | 0.00 | 20.77 | 0.052 0.038 | 242 137 | 0 0 |
| OV561-East | 2/20/26 | 57.8 2.3 | 1600 | 30.0 3.2 | 0610 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 2/20/26 | 54.8 0.9 | 1519 | 30.3 2.0 | 0305 | 32.9 2.8 | 96 1 | 40 3 | 2.1 | 8.0 18.5 | 1643 | SE | 142 | 0.00 | 21.37 | 0.055 0.038 | 253 133 | - |
| OV518-West | 2/20/26 | 54.0 0.3 | 1532 | 31.0 2.5 | 0259 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 2/20/26 | 55.4 0.5 | 1529 | 30.1 2.3 | 0437 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 2/20/26 | 54.5 0.5 | 1538 | 29.6 3.4 | 0541 | 33.6 3.0 | 98 1 | 43 3 | 2.1 | 8.0 16.3 | 1600 | SE | 141 | 0.00 | 23.12 | 0.051 0.035 | 226 124 | - |
| To Kalon Remote (TKN5) | 2/20/26 | 56.2 1.0 | 1534 | 29.5 2.1 | 0544 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 2/20/26 | 53.8 0.1 | 1547 | 30.7 3.5 | 0634 | 33.3 2.0 | 96 0 | 40 3 | 2.3 | 8.6 14.8 | 1631 | S | 183 | 0.16 | 19.50 | 0.060 0.029 | 350 52 | - |
| Stags Leap Dist (Silverado Vineyards) | 2/20/26 | 53.8 1.8 | 1542 | 30.2 4.1 | 0615 | 32.6 2.9 | 94 0 | 43 7 | 1.7 | 7.5 5.9 | 1604 | S | 182 | 0.00 | 23.54 | 0.054 0.025 | 247 106 | - |
| Borreo (Soda Canyon) | 2/20/26 | 53.1 0.2 | 1545 | 28.4 4.5 | 0648 | 31.9 2.1 | 96 1 | 41 4 | 1.6 | 11.5 9.6 | 2255 | SE | 126 | 0.00 | 23.26 | 0.055 0.029 | 267 110 | - |
| Wappo Hill Floor | 2/20/26 | 58.7 4.0 | 1549 | 31.2 3.2 | 0647 | 34.8 2.0 | 100 0 | 41 2 | 1.7 | 8.5 16.8 | 0927 | N | 10 | 0.00 | 22.93 | 0.053 0.034 | 247 100 | - |
| Stags Leap Dist (Chimney Rock) | 2/20/26 | 59.1 3.1 | 1550 | 30.1 3.6 | 0257 | 28.8 7.0 | - | - | 1.8 | 14.5 14.0 | 1610 | SW | 232 | 0.00 | 20.17 | 0.049 0.033 | 229 77 | 0 0 |
| Yountville-South (Ranch 87) | 2/20/26 | 55.8 0.2 | 1528 | 29.7 3.1 | 0325 | 34.8 2.4 | 100 0 | 44 8 | 1.4 | 7.4 13.1 | 1611 | SSW | 202 | 0.00 | 23.31 | 0.048 0.039 | 216 153 | - |
| Yountville-SE (Ranch 85) | 2/20/26 | 56.6 1.9 | 1610 | 30.7 2.6 | 0307 | 34.4 2.4 | 100 3 | 43 5 | 1.4 | 7.5 16.3 | 0956 | NNW | 346 | 0.00 | 21.79 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 2/20/26 | 56.7 0.5 | 1539 | 29.6 3.5 | 0635 | 33.6 2.5 | 96 1 | 41 6 | 1.4 | 9.5 16.2 | 0922 | NNW | 343 | 0.00 | 19.99 | 0.053 0.036 | 244 114 | - |
| Napa-NW (Ranch 54) | 2/20/26 | 55.9 1.3 | 1601 | 31.1 2.6 | 0452 | 34.5 1.9 | 100 0 | 42 7 | 1.7 | 7.7 15.4 | 1535 | SSE | 147 | 0.00 | 22.13 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 2/20/26 | 57.6 1.7 | 1646 | 29.3 4.2 | 0547 | 34.6 2.8 | 100 0 | 40 3 | 0.9 | 8.0 14.3 | 1444 | SSW | 208 | 0.00 | 19.76 | 0.039 0.026 | 160 70 | - |
| Max | 59.1 | - | 32.9 | - | 34.8 | 100 | 49 | 2.3 | 14.5 | - | - | 0.16 | 26.98 | 0.060 | 350 | - | |
| Avg | - | - | - | - | 33.0 | - | - | 1.6 | - | - | - | - | - | - | - | - | |
| Min | 50.3 | - | 27.2 | - | 28.8 | 91 | 32 | 0.9 | 7.0 | - | - | 0.00 | 19.50 | 0.039 | 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 | 2/20/26 | 48.4 0.4 | 1037 | 33.6 0.8 | 0452 | 31.2 2.7 | 86 14 | 51 1 | 2.4 | 9.4 8.8 | 2233 | S | 185 | 0.00 | 28.34 | 0.084 0.002 | 539 61 | 0 0 |
| Mount George (Napa East) | 2/20/26 | 64.1 4.4 | 1407 | 28.9 3.8 | 0700 | 37.8 5.0 | 98 1 | 41 1 | 1.6 | 14.5 8.5 | 2234 | ENE | 70 | 0.00 | 11.12 | 0.065 0.028 | 290 72 | - |
| Napa-East (Palmaz 300') | 2/20/26 | 56.2 0.5 | 1542 | 30.7 5.8 | 0700 | 33.6 2.1 | 100 3 | 35 1 | 3.2 | 18.0 5.1 | 2129 | E | 84 | 0.00 | 17.56 | 0.059 0.015 | 246 64 | - |
| Napa-East (Palmaz 1200') | 2/20/26 | 50.6 1.4 | 1601 | 29.4 1.3 | 0110 | 32.4 1.0 | 100 0 | 13 9 | 3.2 | 13.4 12.1 | 2309 | NE | 53 | - | - | 0.052 0.011 | 253 29 | - |
| Napa-East (Palmaz 1400') | 2/20/26 | 50.7 1.9 | 1404 | 28.6 1.3 | 0323 | 32.8 1.5 | 100 0 | 45 1 | 3.2 | 12.4 12.5 | 2032 | SE | 138 | 0.00 | 23.67 | 0.050 0.003 | 240 10 | - |
| 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) | 2/20/26 | 57.0 1.3 | 1557 | 32.0 4.9 | 0719 | 35.4 35.2 | 100 0 | 44 44 | 2.6 | 11.2 17.5 | 0210 | NNE | 13 | 0.00 | 19.49 | 0.061 0.041 | 282 70 | 0 0 |
| Napa-West Lower (Truchard) | 2/20/26 | 57.8 1.2 | 1328 | 28.0 2.7 | 0704 | 33.3 2.4 | 100 5 | 44 8 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 2/20/26 | 57.6 0.2 | 1551 | 31.8 4.4 | 0548 | 37.2 2.2 | 100 0 | 52 9 | 0.9 | 8.8 9.9 | 1428 | SSE | 162 | 0.00 | 13.36 | 0.032 0.010 | 142 35 | 0 0 |
| Toyon Remote 1 | 2/20/26 | 56.4 0.7 | 1330 | 29.6 2.1 | 0603 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 2/20/26 | 56.4 1.8 | 1345 | 31.2 1.0 | 0423 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 2/20/26 | 56.7 0.7 | 1353 | 29.3 2.6 | 0604 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 2/20/26 | 56.0 1.1 | 1351 | 31.7 2.7 | 0702 | 35.0 1.4 | 95 0 | 47 9 | 2.4 | 9.0 14.2 | 1437 | SSE | 168 | 0.00 | 18.72 | 0.062 0.021 | 295 59 | - |
| Carneros (Saintsbury) | 2/20/26 | 56.9 1.1 | 1340 | 30.5 4.2 | 0612 | 34.3 2.1 | 100 1 | 47 10 | 2.1 | 10.3 16.4 | 1525 | SE | 133 | 0.00 | 5.12 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 2/20/26 | 56.1 0.9 | 1347 | 30.4 1.4 | 0546 | 34.1 1.3 | - | - | 3.4 | 11.4 15.0 | 1125 | SW | 222 | 0.00 | 17.81 | 0.066 0.014 | 291 5 | - |
| Suscol Mtn (Ranch 93) | 2/20/26 | 54.3 2.7 | 1353 | 36.1 1.1 | 0405 | 33.4 1.3 | 83 17 | 43 6 | 7.1 | 21.8 26.2 | 2256 | ESE | 108 | 0.00 | 13.12 | - | - | - |
| Suscol Upper (Ranch 92) | 2/20/26 | 57.3 4.7 | 1352 | 36.0 1.9 | 0553 | 34.0 1.1 | 83 17 | 42 6 | 3.3 | 15.1 15.1 | 2310 | NE | 49 | 0.00 | 17.60 | - | - | 0 0 |
| Stanly (Ranch 45) | 2/20/26 | 56.6 0.6 | 1554 | 31.7 3.8 | 0606 | 35.0 1.8 | 94 2 | 45 10 | 3.4 | 10.3 12.1 | 1225 | SE | 125 | 0.00 | 19.18 | 0.072 0.025 | 332 73 | 0 0 |
| Carneros Upper (Ranch 81) | 2/20/26 | 57.0 3.2 | 1338 | 33.2 6.2 | 0556 | 34.4 4.4 | - | - | 3.2 | 13.2 22.5 | 1230 | ESE | 104 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 2/20/26 | 56.9 1.0 | 1330 | 28.9 3.3 | 0215 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 2/20/26 | 54.3 0.6 | 1337 | 30.0 6.8 | 0527 | 34.5 1.8 | 100 0 | 0 0 | 1.3 | 8.5 13.6 | 1608 | SSE | 165 | 0.00 | 16.55 | 0.051 0.019 | 226 7 | 0 0 |
| Carneros (Milton Rd) | 2/20/26 | 55.4 0.9 | 1335 | 30.7 4.3 | 0527 | 34.2 2.7 | 93 1 | 46 9 | - | - | - | - | 0.00 | 5.75 | - | - | - |
| Max | 64.1 | - | 36.1 | - | 37.8 | 100 | 52 | 7.1 | 21.8 | - | - | 0.00 | 28.34 | 0.084 | 539 | - | |
| Avg | - | - | - | - | 34.3 | - | - | 2.9 | - | - | - | - | - | - | - | - | |
| Min | 48.4 | - | 28.0 | - | 31.2 | 83 | 0 | 0.9 | 8.5 | - | - | 0.00 | 5.12 | 0.032 | 142 | - |