| 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 | 2/27/26 | 76.3 4.6 | 1418 | 47.7 4.6 | 0536 | - | - | - | - | - | - | - | 0.00 | 42.33 | - | - | - |
| Pope Valley (Weeks Lake) | 2/27/26 | 82.1 7.7 | 1431 | 45.2 2.4 | 0410 | 52.1 0.7 | 100 0 | 33 7 | 1.1 | 7.0 0.2 | 0753 | SW | 224 | 0.00 | 21.60 | 0.098 0.009 | 342 0 | 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 | 2/27/26 | 80.1 5.0 | 1322 | 47.1 3.5 | 0724 | 55.0 0.4 | 100 0 | 45 3 | 1.9 | 9.8 0.7 | 1745 | NE | 50 | 0.00 | 19.16 | 0.109 0.012 | 366 1 | - |
| Dollarhide 1AS Remote | 2/27/26 | 81.6 4.1 | 1506 | 44.3 2.7 | 0615 | 52.7 0.3 | 95 0 | 41 2 | 0.9 | 7.7 0.1 | 1411 | S | 174 | - | - | - | - | - |
| Dollarhide 17B Remote | 2/27/26 | 80.4 2.2 | 1431 | 45.6 4.5 | 0622 | 54.5 0.5 | 100 0 | 44 2 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 2/27/26 | 81.8 3.0 | 1441 | 43.3 3.8 | 0603 | 52.7 0.2 | 100 0 | 41 2 | - | - | - | - | - | - | - | - | - |
| Angwin | 2/27/26 | 71.7 4.3 | 1503 | 55.0 4.3 | 0712 | 49.2 1.4 | 73 27 | 39 15 | 4.4 | 11.5 1.5 | 0630 | N | 8 | 0.00 | 38.60 | 0.038 0.021 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 2/27/26 | 74.3 4.7 | 1429 | 52.4 7.2 | 0531 | - | - | - | 2.6 | 10.9 3.1 | 0625 | NNE | 13 | - | - | - | - | - |
| Deer Park | 2/27/26 | 81.1 5.7 | 1413 | 53.8 4.1 | 0452 | 53.4 0.7 | 91 9 | 30 17 | 2.4 | 11.2 1.2 | 1146 | ENE | 61 | 0.00 | 23.60 | 0.092 0.016 | 257 3 | - |
| Lower Chiles Valley (Brown) | 2/27/26 | 79.9 3.5 | 1412 | 45.3 1.4 | 0507 | 51.6 0.2 | 100 0 | 38 10 | 1.4 | 9.5 0.7 | 1110 | SE | 125 | 0.00 | 20.67 | 0.112 0.018 | 368 16 | 0 0 |
| Moss Creek Vineyard/Reservior | 2/27/26 | 75.0 4.5 | 1652 | 47.1 0.9 | 0511 | 51.8 0.1 | 100 0 | 36 18 | - | - | - | - | 0.00 | 23.37 | - | - | - |
| Max | 82.1 | - | 55.0 | - | 55.0 | 100 | 45 | 4.4 | 11.5 | - | - | 0.00 | 42.33 | 0.112 | 368 | - | |
| Avg | - | - | - | - | 52.6 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 71.7 | - | 43.3 | - | 49.2 | 73 | 30 | 0.9 | 7.0 | - | - | 0.00 | 19.16 | 0.038 | 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 | 2/27/26 | 83.5 5.8 | 1350 | 49.1 2.1 | 0542 | 55.6 1.0 | 100 0 | 40 7 | - | - | - | - | 0.00 | 27.89 | - | - | 0 0 |
| Fotsch (Maple Lane) | 2/27/26 | 82.5 6.0 | 1415 | 48.9 2.5 | 0352 | 53.6 0.1 | 97 0 | 34 1 | 1.9 | 13.8 3.5 | 1138 | SSE | 151 | 0.00 | 25.78 | - | - | - |
| Diamond Mtn (Schramsberg) | 2/27/26 | 79.2 6.9 | 1424 | 55.1 4.9 | 0425 | 52.9 0.7 | 86 14 | 36 12 | - | - | - | - | 0.00 | 26.40 | - | - | - |
| Diamond Mtn (McEachran) | 2/27/26 | 81.4 6.3 | 1410 | 52.4 2.5 | 0716 | 54.3 0.3 | 97 2 | 34 11 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 2/27/26 | 83.8 6.8 | 1434 | 49.6 1.3 | 0430 | 53.1 0.8 | 100 0 | 29 9 | 1.4 | 7.5 3.1 | 1155 | SSE | 166 | 0.00 | 26.65 | 0.090 0.006 | 286 4 | 0 0 |
| St. Helena (NVV Office) | 2/27/26 | 83.4 5.5 | 1425 | 50.4 0.9 | 0426 | - | - | - | 0.9 | 7.4 0.9 | 1145 | ENE | 58 | 0.00 | 23.51 | - | - | - |
| Tiara Fria (East St. Helena) | 2/27/26 | 82.1 4.8 | 1427 | 49.8 1.8 | 0358 | 54.3 0.6 | 97 1 | 33 13 | 1.6 | 8.2 0.4 | 1134 | NNW | 346 | 0.00 | 21.80 | - | - | - |
| Rutherford Hill Estate | 2/27/26 | 82.6 4.1 | 1410 | 53.7 1.7 | 0458 | 55.3 0.8 | 93 7 | 34 11 | 1.5 | 7.5 2.8 | 1350 | WNW | 298 | 0.00 | 21.34 | 0.097 0.002 | 314 26 | 0 0 |
| Rutherford-North (Mee Ln) | 2/27/26 | 83.3 3.0 | 1415 | 45.2 0.4 | 0647 | 52.7 0.6 | 100 0 | 32 10 | 1.6 | 7.7 1.8 | 1617 | SE | 139 | 0.00 | 20.47 | 0.099 0.010 | 322 7 | 0 0 |
| Rutherford (STS) | 2/27/26 | 84.8 4.7 | 1413 | 48.3 1.9 | 0336 | 54.3 0.5 | 90 0 | 36 8 | 1.8 | 7.3 1.3 | 1611 | SE | 135 | 0.00 | 21.64 | 0.115 0.009 | 388 6 | - |
| Oakville-NE (Ranch 88) | 2/27/26 | 82.3 3.6 | 1417 | 48.2 2.2 | 0433 | 53.8 0.6 | 97 1 | 32 7 | 0.8 | 8.1 1.1 | 1611 | SSW | 199 | 0.00 | 21.18 | 0.105 0.007 | 361 3 | 0 0 |
| OV561-East | 2/27/26 | 83.5 4.3 | 1454 | 48.6 3.1 | 0454 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 2/27/26 | 81.7 2.5 | 1521 | 48.8 1.3 | 0457 | 54.4 0.1 | 98 0 | 32 4 | 1.9 | 9.2 1.7 | 1609 | SE | 146 | 0.00 | 21.73 | 0.109 0.013 | 374 18 | - |
| OV518-West | 2/27/26 | 80.2 2.6 | 1453 | 49.4 1.9 | 0452 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 2/27/26 | 82.7 3.7 | 1446 | 48.5 2.1 | 0439 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 2/27/26 | 83.1 3.0 | 1443 | 49.1 1.0 | 0401 | 55.0 0.2 | 100 0 | 32 9 | 1.7 | 8.2 1.8 | 1608 | SSE | 166 | 0.00 | 23.60 | 0.103 0.014 | 350 28 | - |
| To Kalon Remote (TKN5) | 2/27/26 | 83.4 4.9 | 1437 | 48.8 1.1 | 0345 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 2/27/26 | 81.1 4.2 | 1455 | 49.4 2.2 | 0407 | 54.3 0.3 | 98 0 | 34 3 | 1.8 | 8.5 1.0 | 1624 | SE | 146 | 0.01 | 19.96 | 0.110 0.016 | 383 30 | - |
| Stags Leap Dist (Silverado Vineyards) | 2/27/26 | 81.0 4.6 | 1354 | 50.0 2.4 | 0409 | 54.0 0.3 | 97 0 | 34 3 | 1.4 | 9.8 1.8 | 1623 | SE | 133 | 0.00 | 23.90 | 0.118 0.025 | 402 79 | - |
| Borreo (Soda Canyon) | 2/27/26 | 78.7 4.0 | 1411 | 49.8 0.5 | 0454 | 53.9 0.2 | 98 1 | 41 5 | 1.6 | 8.2 1.8 | 1018 | SW | 229 | 0.00 | 23.82 | 0.111 0.024 | 390 64 | - |
| Wappo Hill Floor | 2/27/26 | 83.5 2.1 | 1326 | 47.1 2.7 | 0457 | 55.2 0.9 | 100 0 | 37 1 | 1.7 | 7.3 3.7 | 1504 | SSW | 196 | 0.00 | 23.27 | 0.108 0.018 | 370 49 | - |
| Stags Leap Dist (Chimney Rock) | 2/27/26 | 80.2 4.0 | 1446 | 49.1 2.9 | 0420 | 56.1 0.5 | 100 3 | 45 1 | 1.8 | 8.2 0.9 | 1513 | SSE | 163 | 0.00 | 22.50 | 0.098 0.030 | 335 78 | - |
| Yountville-South (Ranch 87) | 2/27/26 | 82.5 3.9 | 1419 | 50.0 1.7 | 0307 | 56.0 0.4 | 100 0 | 38 0 | 1.4 | 9.6 0.9 | 1327 | N | 353 | 0.00 | 23.64 | 0.098 0.002 | 327 19 | - |
| Yountville-SE (Ranch 85) | 2/27/26 | 82.3 4.4 | 1432 | 49.3 2.6 | 0502 | 55.8 0.0 | 100 0 | 39 0 | 1.1 | 6.4 0.7 | 1610 | S | 187 | 0.00 | 22.18 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 2/27/26 | 81.9 2.7 | 1334 | 49.8 3.5 | 0452 | 55.1 0.2 | 97 1 | 36 1 | 1.3 | 8.2 0.7 | 1531 | S | 174 | 0.00 | 20.44 | 0.102 0.017 | 343 44 | - |
| Napa-NW (Ranch 54) | 2/27/26 | 80.0 2.7 | 1430 | 50.3 1.9 | 0500 | 55.7 0.6 | 100 0 | 41 4 | 1.4 | 8.8 0.9 | 1440 | SSE | 167 | 0.00 | 22.66 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 2/27/26 | 79.8 3.9 | 1401 | 50.1 2.8 | 0453 | 55.8 0.4 | 100 0 | 43 3 | 1.3 | 9.8 0.7 | 1501 | S | 180 | 0.00 | 20.32 | 0.073 0.001 | 216 35 | - |
| Max | 84.8 | - | 55.1 | - | 56.1 | 100 | 45 | 1.9 | 13.8 | - | - | 0.01 | 27.89 | 0.118 | 402 | - | |
| Avg | - | - | - | - | 54.6 | - | - | 1.5 | - | - | - | - | - | - | - | - | |
| Min | 78.7 | - | 45.2 | - | 52.7 | 86 | 29 | 0.8 | 6.4 | - | - | 0.00 | 19.96 | 0.073 | 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 | 2/27/26 | 75.3 5.9 | 1354 | 58.0 5.2 | 0629 | 51.1 0.2 | 77 18 | 38 2 | 1.4 | 7.1 0.4 | 0913 | N | 0 | 0.00 | 29.22 | 0.093 0.010 | 290 143 | 0 0 |
| Mount George (Napa East) | 2/27/26 | 91.6 15.1 | 0036 | 49.8 4.6 | 0602 | 56.3 1.5 | 100 0 | 45 7 | 1.1 | 7.9 0.5 | 1528 | SSE | 163 | 0.00 | 11.88 | 0.109 0.018 | 382 48 | - |
| Napa-East (Palmaz 300') | 2/27/26 | 79.9 4.2 | 1418 | 51.2 1.1 | 0514 | 55.2 0.6 | 100 0 | 42 6 | 1.6 | 9.7 1.4 | 1933 | NE | 51 | 0.00 | 18.31 | 0.102 0.017 | 342 37 | - |
| Napa-East (Palmaz 1200') | 2/27/26 | 74.2 3.2 | 1409 | 50.7 2.8 | 0450 | 53.1 7.6 | 100 0 | 44 39 | 2.4 | 10.7 1.8 | 1007 | E | 92 | - | - | 0.105 0.013 | 368 34 | - |
| Napa-East (Palmaz 1400') | 2/27/26 | 74.9 3.7 | 1330 | 50.7 4.1 | 0609 | 53.5 0.2 | 99 1 | 46 19 | 2.7 | 12.8 3.6 | 0803 | NNE | 29 | 0.00 | 24.79 | 0.110 0.017 | 377 6 | - |
| 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) | 2/27/26 | 78.4 3.4 | 1451 | 53.1 1.5 | 0640 | 49.9 46.7 | 100 0 | 0 0 | 1.9 | 10.7 0.4 | 0721 | NNE | 17 | 0.00 | 20.15 | 0.109 0.000 | 371 36 | 0 0 |
| Napa-West Lower (Truchard) | 2/27/26 | 80.4 2.7 | 1447 | 47.7 0.2 | 0241 | 54.8 0.6 | 100 0 | 48 0 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 2/27/26 | 78.0 3.1 | 1402 | 53.0 1.2 | 0235 | 58.2 0.5 | 100 0 | 56 4 | 1.1 | 7.8 0.3 | 1443 | SSW | 196 | 0.00 | 13.94 | 0.055 0.000 | 177 20 | 0 0 |
| Toyon Remote 1 | 2/27/26 | 77.9 2.3 | 1337 | 49.6 0.8 | 0129 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 2/27/26 | 77.4 2.5 | 1439 | 50.9 0.5 | 0118 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 2/27/26 | 78.9 1.1 | 1417 | 49.2 0.5 | 0202 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 2/27/26 | 77.6 2.6 | 1435 | 51.2 1.4 | 0217 | 56.0 0.8 | 97 1 | 49 4 | 2.0 | 8.3 1.2 | 0744 | NNE | 30 | 0.00 | 19.35 | 0.106 0.017 | 372 47 | - |
| Carneros (Saintsbury) | 2/27/26 | 77.3 2.2 | 1329 | 50.1 1.2 | 0651 | 55.5 2.6 | 100 0 | 49 4 | 1.9 | 8.2 0.3 | 1356 | SSW | 200 | 0.00 | 5.62 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 2/27/26 | 77.6 3.3 | 1420 | 52.1 0.0 | 0303 | 55.3 25.3 | - | - | 2.5 | 10.1 0.0 | 1058 | SE | 145 | 0.00 | 18.31 | 0.104 0.005 | 358 25 | - |
| Suscol Mtn (Ranch 93) | 2/27/26 | 75.5 3.5 | 1442 | 57.9 3.8 | 0549 | 54.4 1.2 | 82 17 | 47 9 | 3.1 | 11.0 4.3 | 1117 | NNW | 328 | 0.00 | 13.80 | - | - | - |
| Suscol Upper (Ranch 92) | 2/27/26 | 78.9 4.6 | 1625 | 57.1 3.7 | 0319 | 55.0 10.9 | 86 14 | 47 44 | 1.0 | 9.2 1.5 | 1158 | WSW | 249 | 0.00 | 18.16 | - | - | 0 0 |
| Stanly (Ranch 45) | 2/27/26 | 78.4 2.6 | 1405 | 49.2 0.6 | 0528 | 54.8 1.5 | 98 2 | 46 2 | 2.7 | 10.6 1.6 | 0554 | NNE | 33 | 0.00 | 19.65 | 0.117 0.011 | 407 22 | 0 0 |
| Carneros Upper (Ranch 81) | 2/27/26 | 76.8 2.8 | 1442 | 55.1 1.0 | 0723 | 55.0 31.8 | - | - | 2.7 | 8.1 8.9 | 1348 | SSW | 196 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 2/27/26 | 76.6 0.8 | 1420 | 48.9 1.2 | 0359 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 2/27/26 | 80.4 3.9 | 1336 | 51.6 0.8 | 0501 | 55.4 50.4 | 100 0 | 0 0 | 1.3 | 7.0 0.7 | 1050 | SSE | 163 | 0.00 | 16.94 | 0.087 0.014 | 298 77 | 0 0 |
| Carneros (Milton Rd) | 2/27/26 | 77.7 2.7 | 1409 | 51.7 0.0 | 0537 | 55.2 0.6 | 95 1 | 45 5 | - | - | - | - | 0.00 | 5.75 | - | - | - |
| Max | 91.6 | - | 58.0 | - | 58.2 | 100 | 56 | 3.1 | 12.8 | - | - | 0.00 | 29.22 | 0.117 | 407 | - | |
| Avg | - | - | - | - | 54.6 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 74.2 | - | 47.7 | - | 49.9 | 77 | 0 | 1.0 | 7.0 | - | - | 0.00 | 5.62 | 0.055 | 177 | - |