| 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 | 3/20/26 | 89.1 2.8 | 1421 | 54.9 3.8 | 0218 | - | - | - | - | - | - | - | 0.00 | 42.33 | - | - | 50 10 |
| Pope Valley (Weeks Lake) | 3/20/26 | 92.2 1.1 | 1625 | 39.0 0.4 | 0629 | 49.4 0.9 | 100 0 | 19 4 | 0.8 | 9.2 1.3 | 1640 | SSE | 149 | 0.00 | 21.60 | 0.148 0.006 | 473 8 | 50 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 | 3/20/26 | 94.0 3.6 | 1601 | 47.0 0.9 | 0721 | 55.3 0.5 | 100 0 | 21 3 | 1.2 | 9.3 0.0 | 1751 | SW | 218 | 0.00 | 19.16 | 0.175 0.012 | 532 14 | 50 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 | 3/20/26 | 96.6 1.8 | 1603 | 42.6 1.2 | 0708 | 53.5 1.1 | 100 0 | 20 7 | - | - | - | - | - | - | - | - | 40 10 |
| Dollarhide 18A Remote | 3/20/26 | 98.2 1.5 | 1633 | 40.2 0.4 | 0653 | 51.0 0.4 | 100 0 | 20 2 | - | - | - | - | - | - | - | - | 40 10 |
| Angwin | 3/20/26 | 85.6 2.3 | 1500 | 70.1 7.5 | 0621 | 38.4 6.8 | 38 19 | 14 11 | 4.5 | 13.1 0.7 | 0816 | N | 0 | 0.00 | 38.60 | 0.093 0.017 | 0 0 | 100 0 |
| Lower Angwin (Pioneer) | 3/20/26 | 87.5 2.3 | 1328 | 55.3 3.7 | 0059 | - | - | - | 2.8 | 11.4 0.6 | 0809 | N | 3 | - | - | - | - | 100 0 |
| Deer Park | 3/20/26 | 93.8 2.4 | 1621 | 63.2 0.8 | 0656 | 51.1 1.7 | 69 6 | 18 8 | 1.6 | 9.1 0.9 | 1600 | SW | 233 | 0.00 | 23.61 | 0.134 0.002 | 356 8 | 40 10 |
| Lower Chiles Valley (Brown) | 3/20/26 | 93.4 2.2 | 1540 | 43.0 0.6 | 0722 | 51.4 1.2 | 100 0 | 20 4 | 1.1 | 8.7 0.6 | 1447 | W | 281 | 0.00 | 20.67 | 0.167 0.006 | 512 12 | 50 10 |
| Moss Creek Vineyard/Reservior | 3/20/26 | 90.9 4.4 | 1752 | 47.9 0.7 | 0737 | 52.7 1.9 | 100 0 | 12 12 | - | - | - | - | 0.00 | 23.37 | - | - | 0 0 |
| Max | 98.2 | - | 70.1 | - | 55.3 | 100 | 21 | 4.5 | 13.1 | - | - | 0.00 | 42.33 | 0.175 | 532 | - | |
| Avg | - | - | - | - | 50.3 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 85.6 | - | 39.0 | - | 38.4 | 38 | 12 | 0.8 | 8.7 | - | - | 0.00 | 19.16 | 0.093 | 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 | 3/20/26 | 97.3 2.7 | 1443 | 48.5 0.2 | 0652 | 53.5 0.9 | 97 1 | 23 4 | - | - | - | - | 0.00 | 27.89 | - | - | 30 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) | 3/20/26 | 92.8 3.5 | 1634 | 67.3 3.1 | 0308 | 49.5 1.0 | 58 7 | 19 5 | - | - | - | - | 0.00 | 26.40 | - | - | 100 0 |
| Diamond Mtn (McEachran) | 3/20/26 | 93.3 3.0 | 1549 | 61.2 2.9 | 0727 | 49.7 2.1 | 66 9 | 18 10 | - | - | - | - | - | - | - | - | 20 10 |
| St. Helena-North | 3/20/26 | 95.7 0.7 | 1616 | 49.9 0.1 | 0731 | 49.2 1.0 | 90 3 | 15 6 | 1.7 | 7.2 0.9 | 1238 | SSE | 166 | 0.00 | 26.66 | 0.139 0.002 | 404 8 | 40 10 |
| St. Helena (NVV Office) | 3/20/26 | 95.3 0.4 | 1621 | 50.1 0.2 | 0719 | - | - | - | 1.1 | 6.4 0.1 | 1509 | E | 82 | 0.00 | 23.51 | - | - | 40 10 |
| Tiara Fria (East St. Helena) | 3/20/26 | 93.2 0.7 | 1629 | 50.0 1.3 | 0721 | 53.5 0.7 | 95 0 | 21 2 | 1.5 | 7.1 0.9 | 1416 | SE | 129 | 0.00 | 21.80 | - | - | 40 10 |
| Rutherford Hill Estate | 3/20/26 | 95.4 0.4 | 1634 | 60.9 1.6 | 0518 | 53.9 1.7 | 76 2 | 22 1 | 1.3 | 7.5 2.0 | 1512 | SW | 234 | 0.00 | 21.35 | 0.145 0.003 | 433 9 | 40 10 |
| Rutherford-North (Mee Ln) | 3/20/26 | 92.6 3.8 | 1600 | 48.0 1.6 | 0700 | 54.4 0.1 | 93 2 | 26 4 | 2.0 | 9.4 0.4 | 1427 | ESE | 113 | 0.00 | 20.49 | 0.149 0.004 | 444 9 | 40 10 |
| Rutherford (STS) | 3/20/26 | 92.9 2.8 | 1531 | 49.9 1.4 | 0714 | 56.5 0.2 | 92 0 | 30 3 | 2.1 | 9.0 1.4 | 1515 | E | 93 | 0.00 | 21.65 | 0.177 0.008 | 529 10 | 40 10 |
| Oakville-NE (Ranch 88) | 3/20/26 | 93.1 1.4 | 1538 | 46.9 1.1 | 0700 | 52.2 0.5 | 97 1 | 22 6 | 1.2 | 9.1 0.5 | 1517 | SSW | 213 | 0.00 | 21.19 | 0.167 0.008 | 499 12 | 0 0 |
| OV561-East | 3/20/26 | 96.0 0.0 | 1636 | 49.7 2.1 | 0715 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| Oakville | 3/20/26 | 91.8 2.2 | 1634 | 48.4 2.0 | 0659 | 53.8 0.4 | 97 1 | 25 7 | 2.0 | 10.3 1.4 | 1457 | ESE | 116 | 0.00 | 21.73 | 0.173 0.011 | 508 12 | 40 10 |
| OV518-West | 3/20/26 | 91.3 0.8 | 1606 | 50.3 3.4 | 0713 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| To Kalon Remote (TKKE) | 3/20/26 | 94.4 2.2 | 1622 | 50.8 3.2 | 0730 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| To Kalon | 3/20/26 | 92.7 3.3 | 1535 | 49.6 1.8 | 0734 | 54.0 0.2 | 96 2 | 26 9 | 1.9 | 9.5 0.5 | 1558 | SSE | 153 | 0.00 | 23.62 | 0.163 0.006 | 471 9 | 40 10 |
| To Kalon Remote (TKN5) | 3/20/26 | 94.7 0.9 | 1529 | 48.0 1.1 | 0540 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| Yountville (Ranch 67) | 3/20/26 | 90.1 0.5 | 1554 | 48.8 2.2 | 0741 | 54.5 0.5 | 95 2 | 29 1 | 2.3 | 10.0 0.9 | 1524 | SSE | 157 | 0.00 | 19.96 | 0.173 0.013 | 513 14 | 50 10 |
| Stags Leap Dist (Silverado Vineyards) | 3/20/26 | 90.1 0.2 | 1545 | 49.7 4.0 | 0740 | 54.0 0.8 | 94 3 | 29 1 | 1.6 | 10.0 0.5 | 1522 | SSE | 152 | 0.00 | 23.91 | 0.171 0.010 | 500 12 | 60 10 |
| Borreo (Soda Canyon) | 3/20/26 | 89.6 1.2 | 1605 | 52.0 2.0 | 0731 | 54.0 1.0 | 89 5 | 30 2 | 1.8 | 9.0 1.0 | 1448 | S | 190 | 0.00 | 23.83 | 0.165 0.006 | 515 10 | 0 0 |
| Wappo Hill Floor | 3/20/26 | 93.0 0.4 | 1627 | 44.3 0.2 | 0721 | 53.6 2.1 | 100 0 | 28 1 | 1.6 | 10.4 0.6 | 1519 | ESE | 120 | 0.00 | 23.28 | 0.169 0.012 | 484 10 | 40 10 |
| Stags Leap Dist (Chimney Rock) | 3/20/26 | 91.9 1.1 | 1603 | 47.6 1.1 | 0722 | 55.6 1.2 | 100 0 | 32 2 | 1.7 | 10.2 0.1 | 1503 | SE | 139 | 0.00 | 22.51 | 0.154 0.008 | 452 8 | 50 10 |
| Yountville-South (Ranch 87) | 3/20/26 | 92.4 1.3 | 1614 | 49.2 1.9 | 0725 | 55.9 0.7 | 100 0 | 31 1 | 1.5 | 8.4 2.0 | 1405 | S | 182 | 0.00 | 23.66 | 0.140 0.006 | 399 7 | 40 10 |
| Yountville-SE (Ranch 85) | 3/20/26 | 92.3 0.5 | 1605 | 48.4 1.8 | 0703 | 55.7 1.2 | 100 0 | 30 0 | 1.2 | 8.6 0.8 | 1400 | SSE | 151 | 0.00 | 22.19 | - | 0 0 | 50 10 |
| Oak Knoll-East (Ranch 53) | 3/20/26 | 92.3 1.6 | 1745 | 49.7 1.8 | 0704 | 53.6 0.9 | 94 1 | 25 5 | 1.3 | 9.5 0.5 | 1153 | SSE | 164 | 0.00 | 20.46 | 0.154 0.003 | 460 6 | 40 10 |
| Napa-NW (Ranch 54) | 3/20/26 | 91.7 2.1 | 1704 | 51.3 2.2 | 0700 | 54.4 0.4 | 91 9 | 25 8 | 1.8 | 8.9 0.3 | 1503 | SSE | 156 | 0.00 | 22.69 | - | 0 0 | 60 10 |
| Napa-North (Ranch 29) | 3/20/26 | 93.6 3.5 | 1804 | 50.9 1.3 | 0719 | 56.1 1.3 | 100 0 | 23 13 | 1.2 | 11.3 0.2 | 1156 | S | 180 | 0.00 | 20.32 | 0.112 0.003 | 299 3 | 50 10 |
| Max | 97.3 | - | 67.3 | - | 56.5 | 100 | 32 | 2.3 | 11.3 | - | - | 0.00 | 27.89 | 0.177 | 529 | - | |
| Avg | - | - | - | - | 53.7 | - | - | 1.6 | - | - | - | - | - | - | - | - | |
| Min | 89.6 | - | 44.3 | - | 49.2 | 58 | 15 | 1.1 | 6.4 | - | - | 0.00 | 19.96 | 0.112 | 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 | 3/20/26 | 88.5 1.9 | 1409 | 70.3 4.3 | 0635 | 45.6 3.6 | 47 5 | 16 8 | 1.2 | 5.4 2.4 | 1300 | NNW | 342 | 0.00 | 29.29 | 0.179 0.055 | 583 269 | 100 0 |
| Mount George (Napa East) | 3/20/26 | 92.4 2.3 | 1746 | 52.5 0.7 | 0744 | 58.2 0.7 | 100 0 | 31 7 | 0.8 | 7.8 0.0 | 1550 | WSW | 237 | 0.00 | 11.88 | 0.161 0.005 | 505 9 | 0 0 |
| Napa-East (Palmaz 300') | 3/20/26 | 92.8 3.0 | 1826 | 52.1 1.2 | 0740 | 55.7 1.5 | 100 0 | 28 9 | 1.6 | 9.6 0.1 | 1939 | NE | 52 | 0.00 | 18.31 | 0.150 0.003 | 458 11 | 50 10 |
| 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') | 3/20/26 | 86.2 0.3 | 1407 | 53.1 1.2 | 0703 | 53.2 2.9 | 90 2 | 26 9 | 2.2 | 10.0 0.3 | 1423 | SW | 219 | 0.00 | 24.80 | 0.164 0.002 | 503 8 | 90 10 |
| Wooden Valley | 3/20/26 | 89.8 1.1 | 1639 | 44.5 1.0 | 0627 | 59.2 4.5 | 98 0 | 32 9 | 0.7 | 7.2 0.5 | 1415 | ESE | 122 | 0.00 | 24.00 | 0.141 0.011 | 482 14 | 80 10 |
| Napa-West Upper (Truchard) | 3/20/26 | 91.6 2.4 | 1702 | 57.1 3.3 | 0719 | 55.0 1.8 | 77 23 | 22 16 | 1.9 | 11.6 0.1 | 1502 | SSW | 200 | 0.00 | 20.16 | 0.177 0.012 | 505 11 | 0 0 |
| Napa-West Lower (Truchard) | 3/20/26 | 94.1 1.8 | 1644 | 46.4 2.7 | 0652 | 54.2 0.4 | 100 0 | 23 14 | - | - | - | - | - | - | - | - | 50 10 |
| Napa-South (Toyon Farms) | 3/20/26 | 91.6 2.7 | 1623 | 54.4 1.5 | 0720 | 59.4 0.2 | 96 4 | 27 18 | 1.9 | 9.0 2.7 | 1432 | S | 176 | 0.00 | 13.94 | 0.092 0.011 | 238 5 | 30 10 |
| Toyon Remote 1 | 3/20/26 | 90.7 3.2 | 1620 | 47.4 1.5 | 0733 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 3/20/26 | 91.2 2.4 | 1707 | 49.2 1.9 | 0737 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 3/20/26 | 95.1 4.3 | 1711 | 49.2 2.0 | 0720 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 3/20/26 | 92.2 3.0 | 1650 | 52.5 3.5 | 0601 | 55.5 0.3 | 94 1 | 21 17 | 2.1 | 7.7 1.2 | 1735 | SSW | 205 | 0.00 | 19.35 | 0.168 0.009 | 515 10 | 0 0 |
| Carneros (Saintsbury) | 3/20/26 | 91.2 4.1 | 1631 | 50.4 2.5 | 0722 | 55.9 0.4 | 100 0 | 25 14 | 1.7 | 7.8 2.4 | 1235 | SW | 222 | 0.00 | 5.62 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 3/20/26 | 90.5 3.2 | 1704 | 51.4 1.7 | 0731 | 55.5 0.8 | - | - | 3.0 | 9.6 1.0 | 1319 | SSW | 207 | 0.00 | 18.31 | 0.161 0.009 | 473 10 | 0 0 |
| Suscol Mtn (Ranch 93) | 3/20/26 | 88.0 1.6 | 1713 | 69.1 7.8 | 0011 | 52.9 2.8 | 61 11 | 27 12 | 2.7 | 12.8 0.6 | 1628 | WNW | 295 | 0.00 | 13.80 | - | - | 100 0 |
| Suscol Upper (Ranch 92) | 3/20/26 | 88.8 0.1 | 1655 | 66.6 7.6 | 0016 | 55.1 1.9 | 66 15 | 26 14 | 0.7 | 7.7 1.6 | 1530 | SSW | 208 | 0.00 | 18.16 | - | - | 100 0 |
| Stanly (Ranch 45) | 3/20/26 | 92.9 2.5 | 1610 | 49.7 3.3 | 0737 | 55.7 0.2 | 98 1 | 27 9 | 2.4 | 9.2 0.3 | 1457 | SW | 224 | 0.00 | 19.65 | 0.185 0.011 | 548 11 | 0 0 |
| Carneros Upper (Ranch 81) | 3/20/26 | 90.9 1.9 | 1638 | 60.9 5.4 | 0736 | 54.2 1.0 | - | - | 2.9 | 12.5 2.4 | 1757 | WSW | 256 | - | - | - | - | 90 20 |
| Carneros (Mitsuko) | 3/20/26 | 90.6 1.1 | 1616 | 45.6 2.1 | 0547 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 3/20/26 | 99.4 8.3 | 1650 | 49.6 1.7 | 0721 | 51.9 1.1 | 100 0 | 0 0 | 0.7 | 6.9 0.1 | 1144 | S | 175 | 0.00 | 16.94 | 0.127 0.001 | 402 12 | 0 0 |
| Carneros (Milton Rd) | 3/20/26 | 90.2 1.3 | 1615 | 47.6 0.3 | 0719 | 55.4 0.5 | 95 0 | 31 7 | - | - | - | - | 0.00 | 17.00 | - | - | 0 0 |
| Max | 99.4 | - | 70.3 | - | 59.4 | 100 | 32 | 3.0 | 12.8 | - | - | 0.00 | 29.29 | 0.185 | 583 | - | |
| Avg | - | - | - | - | 54.9 | - | - | 1.8 | - | - | - | - | - | - | - | - | |
| Min | 86.2 | - | 44.5 | - | 45.6 | 47 | 0 | 0.7 | 5.4 | - | - | 0.00 | 5.62 | 0.092 | 238 | - |