| 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 | 3/21/26 | 82.0 7.1 | 1612 | 48.6 6.3 | 2256 | - | - | - | - | - | - | - | 0.00 | 42.33 | - | - | 70 20 |
| Pope Valley (Weeks Lake) | 3/21/26 | 88.3 3.9 | 1559 | 45.0 6.0 | 0057 | 47.5 1.9 | 100 0 | 18 0 | 2.2 | 12.3 3.1 | 1707 | WSW | 238 | 0.00 | 21.60 | 0.161 0.013 | 455 18 | 40 10 |
| 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 | 3/21/26 | 89.7 4.3 | 1347 | 51.3 4.3 | 0758 | 53.6 1.7 | 100 0 | 29 8 | 3.0 | 16.0 6.7 | 1650 | WSW | 252 | 0.00 | 19.16 | 0.184 0.009 | 508 24 | 40 10 |
| Dollarhide 1AS Remote | 3/14/26 | 81.7 1.0 | 1452 | 37.8 5.1 | 0742 | 46.2 3.0 | 95 0 | 28 2 | 1.7 | 12.6 2.7 | 1558 | SW | 228 | - | - | - | - | 100 0 |
| Dollarhide 17B Remote | 3/21/26 | 88.7 7.9 | 1538 | 47.2 4.6 | 0720 | 52.1 1.4 | 100 0 | 28 8 | - | - | - | - | - | - | - | - | 30 10 |
| Dollarhide 18A Remote | 3/21/26 | 88.8 9.4 | 1647 | 43.0 2.8 | 0059 | 49.9 1.1 | 100 0 | 27 7 | - | - | - | - | - | - | - | - | 30 10 |
| Angwin | 3/21/26 | 78.9 6.7 | 1542 | 58.0 12.1 | 2337 | 42.6 4.2 | 57 19 | 25 11 | 4.9 | 24.2 11.1 | 0836 | NNW | 338 | 0.00 | 38.60 | 0.072 0.021 | 0 0 | 100 0 |
| Lower Angwin (Pioneer) | 3/21/26 | 80.7 6.8 | 1520 | 47.2 8.0 | 2337 | - | - | - | 3.2 | 18.3 6.9 | 0913 | NNW | 341 | - | - | - | - | 100 0 |
| Deer Park | 3/21/26 | 86.9 6.9 | 1539 | 56.0 7.2 | 0101 | 46.4 4.7 | 66 3 | 23 5 | 4.5 | 17.5 8.4 | 1650 | WNW | 289 | 0.00 | 23.61 | 0.164 0.030 | 344 12 | 30 10 |
| Lower Chiles Valley (Brown) | 3/21/26 | 85.3 8.1 | 1609 | 44.4 1.4 | 0059 | 47.3 4.0 | 100 0 | 23 3 | 2.6 | 18.4 9.7 | 1917 | WNW | 287 | 0.00 | 20.67 | 0.176 0.009 | 484 28 | 70 20 |
| Moss Creek Vineyard/Reservior | 3/21/26 | 88.6 2.3 | 1530 | 51.0 3.1 | 0639 | 50.9 1.8 | 100 0 | 23 10 | - | - | - | - | 0.00 | 23.37 | - | - | 0 0 |
| Max | 89.7 | - | 58.0 | - | 53.6 | 100 | 29 | 4.9 | 24.2 | - | - | 0.00 | 42.33 | 0.184 | 508 | - | |
| Avg | - | - | - | - | 48.8 | - | - | 3.4 | - | - | - | - | - | - | - | - | |
| Min | 78.9 | - | 43.0 | - | 42.6 | 57 | 18 | 2.2 | 12.3 | - | - | 0.00 | 19.16 | 0.072 | 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 | 3/21/26 | 90.7 6.6 | 1431 | 49.4 1.0 | 0049 | 48.2 5.3 | 93 3 | 26 3 | - | - | - | - | 0.00 | 27.89 | - | - | 20 10 |
| Fotsch (Maple Lane) | 3/9/26 | 75.9 3.7 | 1625 | 41.4 5.5 | 0743 | 44.5 1.8 | 97 3 | 26 3 | 3.3 | 15.6 1.3 | 1413 | WSW | 249 | 0.00 | 26.01 | - | - | 0 0 |
| Diamond Mtn (Schramsberg) | 3/21/26 | 86.6 6.2 | 1457 | 54.3 12.9 | 2357 | 46.5 2.9 | 70 12 | 25 6 | - | - | - | - | 0.00 | 26.40 | - | - | 100 0 |
| Diamond Mtn (McEachran) | 3/21/26 | 85.8 7.5 | 1617 | 54.4 6.8 | 0101 | 46.5 3.1 | 73 7 | 23 5 | - | - | - | - | - | - | - | - | 40 20 |
| St. Helena-North | 3/21/26 | 91.6 4.1 | 1509 | 51.9 2.1 | 0058 | 45.5 3.8 | 84 5 | 18 3 | 2.0 | 13.4 6.1 | 1554 | NNW | 343 | 0.00 | 26.66 | 0.142 0.003 | 393 11 | 30 10 |
| St. Helena (NVV Office) | 3/21/26 | 91.4 3.9 | 1539 | 52.2 2.1 | 0718 | - | - | - | 1.5 | 10.5 4.2 | 1604 | NNW | 328 | 0.00 | 23.51 | - | - | 30 10 |
| Tiara Fria (East St. Helena) | 3/21/26 | 89.7 3.5 | 1634 | 50.8 0.8 | 0733 | 48.4 5.1 | 96 0 | 21 0 | 3.5 | 18.3 11.3 | 1916 | NW | 326 | 0.00 | 21.80 | - | - | 30 10 |
| Rutherford Hill Estate | 3/21/26 | 90.9 4.5 | 1600 | 55.5 5.4 | 0059 | 50.3 3.6 | 89 12 | 22 0 | 1.9 | 14.9 7.5 | 1818 | WNW | 292 | 0.00 | 21.35 | 0.147 0.002 | 417 16 | 30 10 |
| Rutherford-North (Mee Ln) | 3/21/26 | 89.7 2.9 | 1600 | 46.4 1.6 | 0732 | 49.8 4.6 | 96 2 | 23 3 | 2.3 | 17.8 8.3 | 1840 | WNW | 300 | 0.00 | 20.49 | 0.156 0.007 | 425 20 | 30 10 |
| Rutherford (STS) | 3/21/26 | 91.1 1.8 | 1506 | 48.0 1.9 | 0058 | 52.7 3.8 | 91 0 | 26 3 | 1.9 | 13.9 4.9 | 1535 | WNW | 296 | 0.00 | 21.65 | 0.169 0.008 | 501 28 | 30 10 |
| Oakville-NE (Ranch 88) | 3/21/26 | 90.8 2.3 | 1557 | 48.2 1.3 | 0729 | 49.1 3.1 | 97 0 | 19 3 | 1.5 | 11.0 1.9 | 1923 | N | 8 | 0.00 | 21.19 | 0.157 0.010 | 469 30 | 0 0 |
| OV561-East | 3/21/26 | 91.7 4.3 | 1650 | 49.6 0.1 | 0747 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Oakville | 3/21/26 | 87.9 3.9 | 1701 | 48.6 0.2 | 0733 | 51.7 2.2 | 98 1 | 23 1 | 2.2 | 12.4 2.0 | 1749 | E | 96 | 0.00 | 21.73 | 0.157 0.016 | 478 30 | 30 10 |
| OV518-West | 3/21/26 | 86.7 4.6 | 1655 | 49.2 1.1 | 0724 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| To Kalon Remote (TKKE) | 3/21/26 | 92.3 2.1 | 1537 | 48.1 2.7 | 0021 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| To Kalon | 3/21/26 | 90.0 2.7 | 1630 | 49.7 0.2 | 0731 | 52.0 2.0 | 99 2 | 22 5 | 2.2 | 10.5 1.0 | 1354 | SE | 137 | 0.00 | 23.62 | 0.149 0.014 | 438 33 | 30 10 |
| To Kalon Remote (TKN5) | 3/21/26 | 90.6 4.1 | 1640 | 49.1 1.1 | 0710 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Yountville (Ranch 67) | 3/21/26 | 85.5 4.6 | 1530 | 48.5 0.3 | 0722 | 52.7 1.9 | 97 2 | 34 4 | 2.0 | 14.2 4.2 | 1733 | E | 100 | 0.00 | 19.96 | 0.157 0.016 | 486 26 | 70 20 |
| Stags Leap Dist (Silverado Vineyards) | 3/21/26 | 85.7 4.4 | 1548 | 48.0 1.7 | 0719 | 52.5 1.5 | 97 3 | 34 5 | 1.7 | 11.8 1.8 | 1736 | E | 95 | 0.00 | 23.91 | 0.152 0.019 | 464 36 | 50 10 |
| Borreo (Soda Canyon) | 3/21/26 | 83.5 6.1 | 1606 | 46.6 5.4 | 0059 | 52.0 1.9 | 96 7 | 36 6 | 1.8 | 9.3 0.3 | 1701 | S | 172 | 0.00 | 23.83 | 0.149 0.016 | 488 27 | 0 0 |
| Wappo Hill Floor | 3/21/26 | 88.1 4.9 | 1635 | 45.6 1.3 | 0745 | 52.3 1.3 | 100 0 | 32 4 | 2.2 | 13.6 3.2 | 1634 | S | 169 | 0.00 | 23.28 | 0.156 0.013 | 456 28 | 30 10 |
| Stags Leap Dist (Chimney Rock) | 3/21/26 | 86.5 5.4 | 1553 | 48.6 1.0 | 0101 | 53.8 1.8 | 100 0 | 37 5 | 2.1 | 13.9 3.6 | 1644 | SSE | 147 | 0.00 | 22.51 | 0.142 0.012 | 425 28 | 40 10 |
| Yountville-South (Ranch 87) | 3/21/26 | 86.9 5.5 | 1600 | 49.3 0.1 | 0058 | 54.0 1.9 | 100 0 | 34 4 | 1.8 | 9.6 1.2 | 1549 | S | 170 | 0.00 | 23.66 | 0.137 0.003 | 405 6 | 30 10 |
| Yountville-SE (Ranch 85) | 3/21/26 | 87.4 4.9 | 1628 | 49.2 0.7 | 0059 | 53.7 2.0 | 100 0 | 33 3 | 1.6 | 15.3 6.7 | 1526 | SSE | 155 | 0.00 | 22.19 | - | 0 0 | 40 10 |
| Oak Knoll-East (Ranch 53) | 3/21/26 | 87.3 5.0 | 1522 | 50.2 0.5 | 0058 | 51.9 1.7 | 94 0 | 30 5 | 1.8 | 12.5 3.0 | 1402 | SSW | 204 | 0.00 | 20.46 | 0.147 0.007 | 434 26 | 30 10 |
| Napa-NW (Ranch 54) | 3/21/26 | 86.3 5.4 | 1448 | 49.6 1.7 | 0059 | 52.8 1.6 | 100 9 | 33 7 | 1.4 | 10.0 1.0 | 1652 | SE | 141 | 0.00 | 22.69 | - | 0 0 | 50 10 |
| Napa-North (Ranch 29) | 3/21/26 | 86.9 6.7 | 1545 | 51.6 0.7 | 0059 | 53.6 2.5 | 100 0 | 32 9 | 1.6 | 12.9 1.6 | 1635 | S | 177 | 0.00 | 20.32 | 0.109 0.003 | 300 1 | 40 10 |
| Max | 92.3 | - | 55.5 | - | 54.0 | 100 | 37 | 3.5 | 18.3 | - | - | 0.00 | 27.89 | 0.169 | 501 | - | |
| Avg | - | - | - | - | 50.9 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 83.5 | - | 45.6 | - | 45.5 | 70 | 18 | 1.4 | 9.3 | - | - | 0.00 | 19.96 | 0.109 | 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 | 3/21/26 | 82.6 5.9 | 1442 | 58.0 12.3 | 2345 | 45.6 0.1 | 60 13 | 30 14 | 1.6 | 9.8 4.3 | 1111 | N | 354 | 0.00 | 29.29 | 0.142 0.037 | 423 160 | 100 0 |
| Mount George (Napa East) | 3/21/26 | 83.9 8.5 | 1529 | 48.5 4.0 | 0058 | 54.4 3.7 | 99 1 | 35 4 | 1.1 | 8.4 0.6 | 1616 | SSE | 160 | 0.00 | 11.88 | 0.147 0.014 | 482 23 | 20 20 |
| Napa-East (Palmaz 300') | 3/21/26 | 85.3 7.5 | 1559 | 49.9 2.2 | 0059 | 53.3 2.4 | 96 3 | 34 6 | 1.5 | 10.5 0.9 | 1611 | SE | 141 | 0.00 | 18.31 | 0.137 0.013 | 433 25 | 70 20 |
| Napa-East (Palmaz 1200') | 3/9/26 | 70.6 2.3 | 1500 | 43.0 5.0 | 0041 | 47.8 0.7 | 100 12 | 4 34 | 2.5 | 11.4 4.4 | 1611 | WNW | 292 | - | - | 0.115 0.012 | 432 5 | 0 0 |
| Napa-East (Palmaz 1400') | 3/21/26 | 80.8 5.4 | 1410 | 48.8 4.3 | 0058 | 50.4 2.8 | 90 0 | 37 12 | 2.5 | 12.1 2.1 | 2159 | W | 270 | 0.00 | 24.80 | 0.152 0.012 | 480 23 | 100 10 |
| Wooden Valley | 3/21/26 | 83.5 6.3 | 1651 | 50.4 5.8 | 0236 | 52.1 7.2 | 98 1 | 29 3 | 2.4 | 13.9 6.6 | 1551 | SW | 214 | 0.00 | 24.00 | 0.155 0.014 | 484 2 | 100 20 |
| Napa-West Upper (Truchard) | 3/21/26 | 85.6 6.0 | 1513 | 51.4 5.7 | 0055 | 53.6 1.3 | 100 23 | 33 11 | 2.5 | 14.8 3.2 | 1441 | SSW | 199 | 0.00 | 20.16 | 0.162 0.015 | 476 29 | 0 0 |
| Napa-West Lower (Truchard) | 3/21/26 | 88.1 6.0 | 1504 | 42.9 3.4 | 0041 | 51.6 2.6 | 100 0 | 32 9 | - | - | - | - | - | - | - | - | 40 10 |
| Napa-South (Toyon Farms) | 3/21/26 | 84.9 6.7 | 1506 | 50.4 4.0 | 0058 | 55.8 3.6 | 100 4 | 41 14 | 2.5 | 11.5 2.5 | 1636 | S | 191 | 0.00 | 13.94 | 0.088 0.004 | 243 4 | 50 20 |
| Toyon Remote 1 | 3/21/26 | 85.7 5.0 | 1532 | 42.8 4.7 | 0029 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 3/21/26 | 84.6 6.6 | 1545 | 45.1 4.1 | 0057 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 3/21/26 | 88.3 6.9 | 1533 | 45.2 4.0 | 0058 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 3/21/26 | 84.9 7.3 | 1509 | 47.4 5.1 | 0035 | 51.9 3.6 | 96 2 | 33 13 | 2.3 | 12.4 4.6 | 1722 | W | 273 | 0.00 | 19.35 | 0.154 0.014 | 490 25 | 0 0 |
| Carneros (Saintsbury) | 3/21/26 | 83.2 8.0 | 1532 | 47.8 2.7 | 0042 | 52.6 3.4 | 100 0 | 38 13 | 2.7 | 14.1 6.3 | 1722 | WNW | 285 | 0.00 | 5.62 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 3/21/26 | 82.8 7.7 | 1525 | 51.3 0.1 | 0059 | 52.2 3.3 | - | - | 4.6 | 17.6 8.0 | 1549 | S | 184 | 0.00 | 18.31 | 0.153 0.008 | 448 24 | 0 0 |
| Suscol Mtn (Ranch 93) | 3/21/26 | 80.6 7.4 | 1537 | 51.6 17.5 | 0045 | 50.4 2.6 | 92 31 | 38 11 | 3.4 | 14.4 1.6 | 1546 | W | 261 | 0.00 | 13.80 | - | - | 100 0 |
| Suscol Upper (Ranch 92) | 3/21/26 | 81.5 7.3 | 1439 | 51.2 15.3 | 0047 | 51.4 3.7 | 93 27 | 39 13 | 1.7 | 13.2 5.5 | 1657 | S | 177 | 0.00 | 18.16 | - | - | 100 0 |
| Stanly (Ranch 45) | 3/21/26 | 85.2 7.7 | 1514 | 50.9 1.1 | 0058 | 52.2 3.5 | 95 3 | 34 7 | 3.3 | 14.8 5.5 | 1531 | SSW | 212 | 0.00 | 19.65 | 0.176 0.009 | 524 24 | 0 0 |
| Carneros Upper (Ranch 81) | 3/21/26 | 83.3 7.6 | 1454 | 53.1 7.8 | 0042 | 51.3 2.9 | - | - | 6.8 | 24.8 12.4 | 1721 | W | 267 | - | - | - | - | 100 10 |
| Carneros (Mitsuko) | 3/21/26 | 83.0 7.6 | 1503 | 42.7 3.0 | 0043 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 3/21/26 | 89.2 10.2 | 1439 | 47.6 2.0 | 0059 | 51.8 0.1 | 100 0 | 0 0 | 1.4 | 12.4 5.5 | 1755 | WNW | 294 | 0.00 | 16.94 | 0.120 0.007 | 374 28 | 0 0 |
| Carneros (Milton Rd) | 3/21/26 | 83.6 6.6 | 1456 | 47.7 0.1 | 0101 | 51.9 3.5 | 95 0 | 38 7 | - | - | - | - | 0.00 | 17.00 | - | - | 0 0 |
| Max | 89.2 | - | 58.0 | - | 55.8 | 100 | 41 | 6.8 | 24.8 | - | - | 0.00 | 29.29 | 0.176 | 524 | - | |
| Avg | - | - | - | - | 51.9 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 80.6 | - | 42.7 | - | 45.6 | 60 | 0 | 1.1 | 8.4 | - | - | 0.00 | 5.62 | 0.088 | 243 | - |