| 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 | 4/15/26 | 66.5 4.4 | 1514 | 34.3 0.3 | 0648 | - | - | - | - | - | - | - | 0.00 | 47.36 | - | - | 20 10 |
| Pope Valley (Weeks Lake) | 4/15/26 | 69.9 1.8 | 1601 | 36.0 0.2 | 0349 | 43.2 0.5 | 100 0 | 38 0 | 2.3 | 18.6 6.1 | 1734 | W | 266 | 0.00 | 24.05 | 0.132 0.012 | 460 74 | 30 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 | 4/15/26 | 71.0 0.8 | 1551 | 39.6 1.0 | 0640 | 46.2 0.0 | 100 0 | 41 3 | 4.8 | 22.2 5.6 | 1626 | WSW | 239 | 0.00 | 21.37 | 0.157 0.007 | 524 78 | 40 10 |
| Dollarhide 1AS Remote | 4/15/26 | 70.6 1.5 | 1619 | 37.3 1.1 | 0553 | 45.1 0.1 | 95 0 | 44 1 | 3.0 | 20.4 6.4 | 1702 | WSW | 244 | - | - | - | - | 30 10 |
| Dollarhide 17B Remote | 4/15/26 | 71.8 1.3 | 1550 | 37.7 0.9 | 0541 | 45.8 0.1 | 100 0 | 43 0 | - | - | - | - | - | - | - | - | 40 10 |
| Dollarhide 18A Remote | 4/15/26 | 70.0 1.5 | 1629 | 35.5 0.9 | 0526 | 44.5 0.1 | 100 0 | 46 2 | - | - | - | - | - | - | - | - | 30 10 |
| Angwin | 4/15/26 | 61.2 1.8 | 1627 | 45.1 1.2 | 0059 | 40.8 1.7 | 100 10 | 37 12 | 2.5 | 19.3 6.4 | 0006 | W | 274 | 0.00 | 42.26 | 0.018 0.001 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 4/15/26 | 63.9 2.4 | 1653 | 35.5 1.7 | 0706 | - | - | - | 2.8 | 16.1 1.5 | 1715 | W | 278 | - | - | - | - | 0 0 |
| Deer Park | 4/15/26 | 70.6 2.5 | 1621 | 43.0 0.2 | 0529 | 44.0 0.5 | 90 5 | 39 4 | 5.3 | 20.7 7.1 | 1830 | WNW | 296 | 0.00 | 26.38 | 0.118 0.001 | 360 43 | 30 10 |
| Lower Chiles Valley (Brown) | 4/15/26 | 67.1 1.1 | 1613 | 34.7 0.9 | 0553 | 43.2 0.6 | 100 0 | 40 6 | 3.6 | 16.6 2.0 | 1929 | W | 266 | 0.00 | 23.68 | 0.140 0.008 | 532 59 | 30 10 |
| Moss Creek Vineyard/Reservior | 4/15/26 | 71.1 2.7 | 1550 | 38.9 0.5 | 0610 | 44.3 0.1 | 100 0 | 32 10 | - | - | - | - | 0.00 | 25.15 | - | - | 40 10 |
| Max | 71.8 | - | 45.1 | - | 46.2 | 100 | 46 | 5.3 | 22.2 | - | - | 0.00 | 47.36 | 0.157 | 532 | - | |
| Avg | - | - | - | - | 44.1 | - | - | 3.5 | - | - | - | - | - | - | - | - | |
| Min | 61.2 | - | 34.3 | - | 40.8 | 90 | 32 | 2.3 | 16.1 | - | - | 0.00 | 21.37 | 0.018 | 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 | 4/15/26 | 73.2 0.7 | 1552 | 38.4 0.3 | 0628 | 45.8 0.4 | 98 1 | 40 3 | - | - | - | - | 0.00 | 30.66 | - | - | 0 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) | 4/15/26 | 69.3 3.8 | 1635 | 39.8 2.4 | 0553 | 44.9 0.6 | 100 0 | 39 5 | - | - | - | - | 0.00 | 29.18 | - | - | 30 10 |
| Diamond Mtn (McEachran) | 4/15/26 | 68.5 2.5 | 1607 | 41.5 1.6 | 0649 | 44.2 0.1 | 94 3 | 39 3 | - | - | - | - | - | - | - | - | 30 10 |
| St. Helena-North | 4/15/26 | 71.5 1.7 | 1547 | 39.8 0.2 | 0607 | 42.9 0.0 | 100 0 | 31 6 | 1.9 | 15.1 2.2 | 1832 | NNW | 342 | 0.00 | 28.40 | 0.123 0.004 | 426 39 | 30 10 |
| St. Helena (NVV Office) | 4/15/26 | 71.7 1.4 | 1524 | 41.5 1.3 | 0525 | - | - | - | 1.6 | 11.8 1.8 | 1858 | WSW | 258 | 0.00 | 26.38 | - | - | 40 10 |
| Tiara Fria (East St. Helena) | 4/15/26 | 69.8 1.6 | 1537 | 41.0 1.3 | 0544 | 45.0 0.1 | 96 0 | 37 4 | 3.2 | 15.5 1.1 | 1536 | WSW | 248 | 0.00 | 24.36 | - | - | 30 10 |
| Rutherford Hill Estate | 4/15/26 | 70.9 0.8 | 1617 | 42.3 0.3 | 0600 | 45.6 0.4 | 100 0 | 37 2 | 2.2 | 13.6 0.0 | 1533 | SW | 217 | 0.00 | 23.16 | 0.132 0.001 | 473 20 | 30 10 |
| Rutherford-North (Mee Ln) | 4/15/26 | 71.3 1.5 | 1518 | 35.8 0.9 | 0614 | 44.2 0.4 | 97 0 | 35 4 | 2.6 | 16.2 2.6 | 1548 | WSW | 258 | 0.00 | 22.65 | 0.135 0.003 | 468 14 | 40 10 |
| Rutherford (STS) | 4/15/26 | 71.3 0.2 | 1540 | 38.9 0.1 | 0653 | 45.9 0.8 | 90 1 | 40 4 | 2.4 | 13.7 0.8 | 1615 | WSW | 256 | 0.00 | 23.91 | 0.148 0.009 | 547 45 | 40 10 |
| Oakville-NE (Ranch 88) | 4/15/26 | 71.3 1.4 | 1552 | 38.5 0.4 | 0610 | 43.7 0.3 | 100 0 | 31 3 | 2.0 | 15.3 0.3 | 1604 | WNW | 286 | 0.00 | 23.05 | 0.140 0.009 | 505 44 | 0 0 |
| OV561-East | 4/15/26 | 70.3 0.6 | 1625 | 39.7 0.4 | 0601 | - | - | - | - | - | - | - | - | - | - | - | 10 10 |
| Oakville | 4/15/26 | 69.2 0.5 | 1459 | 39.8 1.1 | 0540 | 44.7 0.7 | 98 0 | 38 3 | 3.3 | 18.8 3.4 | 1549 | SW | 226 | 0.00 | 23.59 | 0.150 0.003 | 545 27 | 30 10 |
| OV518-West | 4/15/26 | 68.3 0.6 | 1630 | 39.6 1.1 | 0711 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| To Kalon Remote (TKKE) | 4/15/26 | 71.2 1.3 | 1457 | 37.6 0.6 | 0608 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| To Kalon | 4/15/26 | 69.3 0.1 | 1458 | 39.6 1.0 | 0611 | 45.7 1.1 | 99 0 | 41 2 | 2.9 | 17.2 2.8 | 1511 | S | 181 | 0.00 | 25.72 | 0.137 0.007 | 500 32 | 30 10 |
| To Kalon Remote (TKN5) | 4/15/26 | 70.1 0.4 | 1453 | 39.0 0.8 | 0608 | - | - | - | - | - | - | - | - | - | - | - | 20 10 |
| Yountville (Ranch 67) | 4/15/26 | 69.2 1.1 | 1656 | 39.4 0.1 | 0615 | 43.9 0.1 | 97 0 | 34 6 | 2.2 | 12.4 3.4 | 1643 | WSW | 239 | 0.00 | 21.74 | 0.147 0.005 | 585 45 | 30 10 |
| Stags Leap Dist (Silverado Vineyards) | 4/15/26 | 71.1 4.2 | 1628 | 38.7 0.7 | 0605 | 44.3 0.6 | 97 0 | 34 10 | 0.9 | 8.5 7.7 | 1759 | NW | 321 | 0.00 | 25.83 | 0.131 0.016 | 510 45 | 40 10 |
| Borreo (Soda Canyon) | 4/15/26 | 68.2 3.9 | 1641 | 38.1 0.0 | 0632 | 43.4 0.4 | 98 0 | 35 13 | 1.5 | 14.4 3.3 | 1559 | SW | 217 | 0.00 | 25.72 | 0.141 0.002 | 550 25 | 20 10 |
| Wappo Hill Floor | 4/15/26 | 71.2 3.9 | 1611 | 37.9 0.3 | 0602 | 44.8 0.1 | 100 0 | 35 13 | 1.9 | 14.3 2.3 | 1525 | WNW | 302 | 0.00 | 25.08 | 0.142 0.006 | 515 40 | 40 10 |
| Stags Leap Dist (Chimney Rock) | 4/15/26 | 70.4 3.6 | 1549 | 38.9 0.2 | 0522 | 46.0 0.2 | 100 0 | 38 14 | 2.0 | 12.4 2.9 | 2012 | ESE | 110 | 0.00 | 24.34 | 0.131 0.007 | 479 45 | 30 10 |
| Yountville-South (Ranch 87) | 4/15/26 | 70.7 3.5 | 1546 | 40.2 0.5 | 0616 | 45.8 0.4 | 100 0 | 34 13 | 1.9 | 11.7 2.1 | 1448 | NW | 317 | 0.00 | 25.67 | 0.137 0.009 | 502 50 | 0 0 |
| Yountville-SE (Ranch 85) | 4/15/26 | 70.5 2.6 | 1542 | 40.8 0.4 | 0535 | 46.1 0.6 | 100 0 | 36 11 | 1.7 | 12.0 0.3 | 1456 | N | 5 | 0.00 | 23.95 | - | 0 0 | 10 10 |
| Oak Knoll-East (Ranch 53) | 4/15/26 | 71.5 | 1442 | 40.3 | 0626 | 47.8 | 96 | 33 | 3.0 | 14.9 | 1555 | SSW | 199 | 0.00 | 22.43 | 0.127 | 535 | 0 |
| Napa-NW (Ranch 54) | 4/15/26 | 70.0 2.8 | 1441 | 41.6 1.5 | 0514 | 45.7 0.8 | 100 0 | 34 10 | 1.5 | 14.1 1.1 | 1709 | SSW | 208 | 0.00 | 24.86 | - | 0 0 | 40 10 |
| Napa-North (Ranch 29) | 4/15/26 | 67.8 2.7 | 1428 | 40.5 0.0 | 0621 | 46.5 0.8 | 100 0 | 47 3 | 2.2 | 16.5 0.9 | 1514 | SSW | 195 | 0.00 | 22.49 | 0.102 0.005 | 348 32 | 40 10 |
| Max | 73.2 | - | 42.3 | - | 47.8 | 100 | 47 | 3.3 | 18.8 | - | - | 0.00 | 30.66 | 0.150 | 585 | - | |
| Avg | - | - | - | - | 45.1 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 67.8 | - | 35.8 | - | 42.9 | 90 | 31 | 0.9 | 8.5 | - | - | 0.00 | 21.74 | 0.102 | 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 | 4/15/26 | 63.9 3.0 | 1340 | 42.4 1.5 | 0723 | 44.1 0.7 | 95 1 | 39 10 | 1.2 | 8.8 4.6 | 1457 | NNE | 20 | 0.00 | 31.92 | 0.113 0.004 | 427 59 | 0 10 |
| Mount George (Napa East) | 4/15/26 | 69.0 3.2 | 1440 | 45.3 2.6 | 0608 | 50.1 3.7 | 100 0 | 49 0 | 1.7 | 15.0 2.6 | 1519 | SSE | 161 | 0.00 | 14.31 | 0.141 0.009 | 530 13 | 30 10 |
| Napa-East (Palmaz 300') | 4/15/26 | 68.7 1.8 | 1511 | 40.6 1.2 | 0603 | 46.0 1.0 | 100 0 | 43 2 | 2.2 | 13.7 0.6 | 1209 | SW | 215 | 0.00 | 20.64 | 0.125 0.000 | 454 15 | 40 10 |
| Napa-East (Palmaz 1200') | 4/15/26 | 63.2 2.7 | 1454 | 38.0 2.0 | 0619 | 42.1 0.6 | 100 0 | 36 25 | 2.4 | 16.2 1.7 | 1413 | NNW | 328 | - | - | 0.128 | 532 126 | 0 0 |
| Napa-East (Palmaz 1400') | 4/15/26 | 62.5 0.9 | 1454 | 39.2 0.6 | 0240 | 45.4 1.1 | 100 0 | 54 3 | 2.8 | 14.9 1.6 | 1541 | WSW | 249 | 0.00 | 27.92 | 0.123 0.002 | 504 8 | 0 0 |
| Wooden Valley | 4/15/26 | 65.6 2.1 | 1525 | 39.6 1.7 | 0556 | 44.3 1.6 | 97 1 | 47 3 | 3.6 | 17.6 1.2 | 1658 | SSW | 206 | 0.00 | 26.48 | 0.136 0.012 | 536 78 | 0 0 |
| Napa-West Upper (Truchard) | 4/15/26 | 67.9 1.5 | 1434 | 42.5 0.1 | 0620 | 13.0 2.2 | 100 0 | 0 0 | 4.5 | 21.6 3.6 | 1410 | SSW | 207 | 0.00 | 22.19 | 0.148 0.003 | 536 12 | 10 10 |
| Napa-West Lower (Truchard) | 4/15/26 | 70.9 0.1 | 1509 | 36.2 0.4 | 0621 | 44.5 1.9 | 100 0 | 38 2 | - | - | - | - | - | - | - | - | 10 10 |
| Napa-South (Toyon Farms) | 4/15/26 | 67.5 1.7 | 1428 | 42.0 0.1 | 0553 | 48.2 1.1 | 100 0 | 55 1 | 3.7 | 18.7 4.5 | 1543 | SSW | 212 | 0.00 | 15.95 | 0.074 0.004 | 256 3 | 10 10 |
| Toyon Remote 1 | 4/15/26 | 70.7 1.4 | 1457 | 34.5 0.1 | 0457 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 4/15/26 | 67.8 0.6 | 1447 | 38.2 0.5 | 0621 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 4/15/26 | 70.7 2.2 | 1447 | 38.1 0.1 | 0622 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 4/15/26 | 67.8 1.7 | 1447 | 40.1 0.5 | 0443 | 45.4 1.0 | 97 1 | 46 2 | 3.0 | 16.8 2.1 | 1631 | W | 273 | 0.00 | 21.57 | 0.138 0.007 | 519 14 | 40 10 |
| Carneros (Saintsbury) | 4/15/26 | 66.8 1.2 | 1458 | 38.7 0.4 | 0616 | 45.7 1.1 | 100 0 | 48 1 | 5.2 | 21.4 4.0 | 1656 | W | 262 | 0.00 | 7.63 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 4/15/26 | 67.9 1.5 | 1426 | 40.2 0.9 | 0613 | 45.5 0.7 | - | - | 4.6 | 19.8 0.4 | 1615 | SW | 218 | 0.00 | 20.34 | 0.133 0.003 | 476 8 | 30 10 |
| Suscol Mtn (Ranch 93) | 4/15/26 | 65.7 0.2 | 1414 | 42.7 1.9 | 0624 | 45.1 0.2 | 98 1 | 48 5 | 6.8 | 27.7 4.2 | 1516 | WNW | 287 | 0.00 | 16.11 | - | - | 0 10 |
| Suscol Upper (Ranch 92) | 4/15/26 | 63.5 1.0 | 1457 | 43.0 1.4 | 0628 | 39.0 0.3 | 100 0 | 3 0 | 4.5 | 24.2 2.7 | 1553 | SW | 220 | 0.00 | 19.99 | - | - | 0 10 |
| Stanly (Ranch 45) | 4/15/26 | 67.0 1.4 | 1443 | 39.1 0.6 | 0320 | 45.2 0.7 | 98 0 | 45 2 | 5.0 | 21.8 5.1 | 1512 | SW | 236 | 0.04 | 22.17 | 0.152 0.002 | 573 28 | 40 10 |
| Carneros Upper (Ranch 81) | 4/15/26 | 65.2 1.8 | 1441 | 43.8 2.0 | 0607 | 45.6 0.3 | - | - | 8.4 | 27.2 3.6 | 1633 | WSW | 253 | - | - | - | - | 0 10 |
| Carneros (Mitsuko) | 4/15/26 | 67.2 0.1 | 1454 | 35.8 0.8 | 0628 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 4/15/26 | 69.1 1.8 | 1438 | 39.3 0.0 | 0615 | 41.6 1.0 | 100 0 | 0 0 | 0.7 | 11.3 2.8 | 1740 | NW | 320 | 0.00 | 17.96 | 0.119 0.008 | 445 23 | 0 0 |
| Carneros (Milton Rd) | 4/15/26 | 68.2 1.3 | 1446 | 37.5 0.8 | 0613 | 45.0 1.1 | 95 1 | 45 1 | - | - | - | - | 0.00 | 18.04 | - | - | 0 0 |
| Max | 70.9 | - | 45.3 | - | 50.1 | 100 | 55 | 8.4 | 27.7 | - | - | 0.04 | 31.92 | 0.152 | 573 | - | |
| Avg | - | - | - | - | 43.1 | - | - | 3.8 | - | - | - | - | - | - | - | - | |
| Min | 62.5 | - | 34.5 | - | 13.0 | 95 | 0 | 0.7 | 8.8 | - | - | 0.00 | 7.63 | 0.074 | 256 | - |