| 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 | 3/15/26 | 82.1 7.6 | 1703 | 45.6 0.5 | 0639 | - | - | - | - | - | - | - | 0.00 | 42.33 | - | - | 0 0 |
| Pope Valley (Weeks Lake) | 3/15/26 | 84.2 4.9 | 1553 | 37.6 0.6 | 0716 | 39.9 4.5 | 100 0 | 8 16 | 1.8 | 16.7 0.4 | 1222 | N | 4 | 0.00 | 21.60 | 0.150 0.015 | 452 12 | 100 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 | 3/15/26 | 85.7 5.5 | 1511 | 47.1 4.7 | 0717 | 44.3 4.9 | 100 1 | 12 18 | 2.7 | 16.2 0.5 | 1400 | ENE | 58 | 0.00 | 19.16 | 0.174 0.022 | 494 15 | 100 0 |
| 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 | 3/15/26 | 86.6 5.6 | 1616 | 41.2 1.4 | 0758 | 44.8 3.3 | 100 0 | 13 16 | - | - | - | - | - | - | - | - | 90 10 |
| Dollarhide 18A Remote | 3/15/26 | 88.6 7.3 | 1551 | 35.0 0.4 | 0707 | 41.5 4.2 | 100 0 | 11 17 | - | - | - | - | - | - | - | - | 90 10 |
| Angwin | 3/15/26 | 76.8 6.8 | 1618 | 56.3 1.6 | 0337 | 31.6 4.0 | 66 8 | 10 4 | 8.0 | 20.6 2.2 | 0703 | NNW | 338 | 0.00 | 38.60 | 0.120 0.048 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 3/15/26 | 80.5 7.2 | 1625 | 57.7 15.4 | 0259 | - | - | - | 4.2 | 15.6 1.0 | 0825 | NNW | 337 | - | - | - | - | 0 0 |
| Deer Park | 3/15/26 | 87.7 7.9 | 1627 | 52.4 0.0 | 0346 | 38.2 8.0 | 85 7 | 8 16 | 3.1 | 16.2 1.2 | 1405 | NNW | 341 | 0.00 | 23.61 | 0.150 0.021 | 341 7 | 90 10 |
| Lower Chiles Valley (Brown) | 3/15/26 | 85.7 7.4 | 1727 | 40.1 1.2 | 0516 | 37.9 6.2 | 100 0 | 8 18 | 1.9 | 17.8 6.4 | 1252 | N | 8 | 0.00 | 20.67 | 0.161 0.018 | 486 14 | 100 20 |
| Moss Creek Vineyard/Reservior | 3/15/26 | 84.3 2.4 | 1442 | 44.0 1.4 | 0443 | 40.1 6.2 | 100 4 | 7 18 | - | - | - | - | 0.00 | 23.37 | - | - | 0 0 |
| Max | 88.6 | - | 57.7 | - | 44.8 | 100 | 13 | 8.0 | 20.6 | - | - | 0.00 | 42.33 | 0.174 | 494 | - | |
| Avg | - | - | - | - | 39.8 | - | - | 3.6 | - | - | - | - | - | - | - | - | |
| Min | 76.8 | - | 35.0 | - | 31.6 | 66 | 7 | 1.8 | 15.6 | - | - | 0.00 | 19.16 | 0.120 | 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 | 3/15/26 | 91.9 16.0 | 1506 | 44.7 0.5 | 0745 | 46.1 5.4 | 99 4 | 9 30 | - | - | - | - | 0.00 | 27.89 | - | - | 80 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) | 3/15/26 | 86.3 7.9 | 1632 | 52.5 4.3 | 0203 | 36.6 10.4 | 85 2 | 7 24 | - | - | - | - | 0.00 | 26.40 | - | - | 0 0 |
| Diamond Mtn (McEachran) | 3/15/26 | 87.7 9.0 | 1612 | 50.8 1.4 | 0708 | 40.2 7.0 | 89 1 | 7 24 | - | - | - | - | - | - | - | - | 70 10 |
| St. Helena-North | 3/15/26 | 91.1 8.2 | 1536 | 45.3 1.9 | 0713 | 38.8 6.8 | 100 14 | 4 20 | 1.7 | 9.4 2.2 | 1345 | E | 100 | 0.00 | 26.66 | 0.130 0.012 | 385 13 | 90 10 |
| St. Helena (NVV Office) | 3/15/26 | 91.2 10.0 | 1637 | 46.0 0.1 | 0742 | - | - | - | 1.4 | 12.0 1.0 | 1351 | NE | 51 | 0.00 | 23.51 | - | - | 90 10 |
| Tiara Fria (East St. Helena) | 3/15/26 | 90.4 11.0 | 1659 | 43.5 0.5 | 0724 | 42.7 4.9 | 97 2 | 7 21 | 2.0 | 14.5 0.9 | 1307 | NW | 308 | 0.00 | 21.80 | - | - | 90 10 |
| Rutherford Hill Estate | 3/15/26 | 92.2 13.3 | 1707 | 53.6 6.2 | 0354 | 43.6 4.5 | 89 3 | 8 23 | 1.5 | 14.5 2.6 | 1254 | NNE | 16 | 0.00 | 21.35 | 0.137 0.014 | 418 15 | 90 10 |
| Rutherford-North (Mee Ln) | 3/15/26 | 92.5 14.2 | 1708 | 41.8 2.6 | 0730 | 44.5 2.6 | 96 0 | 9 23 | 1.9 | 13.4 0.2 | 1334 | ESE | 107 | 0.00 | 20.49 | 0.138 0.007 | 425 13 | 90 10 |
| Rutherford (STS) | 3/15/26 | 89.8 10.7 | 1621 | 44.8 3.9 | 0655 | 47.1 2.4 | 90 2 | 13 21 | 2.3 | 12.8 0.1 | 1222 | NNE | 20 | 0.00 | 21.65 | 0.164 0.016 | 504 14 | 90 10 |
| Oakville-NE (Ranch 88) | 3/15/26 | 89.6 11.9 | 1517 | 43.4 4.1 | 0740 | 43.3 3.0 | 99 1 | 8 22 | 1.5 | 12.8 0.8 | 1247 | ENE | 68 | 0.00 | 21.19 | 0.156 0.016 | 471 14 | 0 0 |
| OV561-East | 3/15/26 | 92.9 13.4 | 1638 | 44.6 4.8 | 0629 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| Oakville | 3/15/26 | 90.9 13.6 | 1639 | 42.7 2.6 | 0714 | 44.4 2.7 | 98 0 | 7 26 | 2.3 | 11.5 2.5 | 1211 | NNE | 18 | 0.00 | 21.73 | 0.161 0.017 | 483 12 | 90 10 |
| OV518-West | 3/15/26 | 86.9 9.8 | 1620 | 44.2 3.4 | 0714 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| To Kalon Remote (TKKE) | 3/15/26 | 91.2 12.1 | 1636 | 43.2 2.7 | 0631 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| To Kalon | 3/15/26 | 90.4 12.5 | 1625 | 43.2 1.8 | 0740 | 43.8 4.3 | 99 0 | 8 25 | 2.2 | 13.2 0.0 | 1252 | NNW | 348 | 0.00 | 23.62 | 0.155 0.019 | 450 11 | 90 10 |
| To Kalon Remote (TKN5) | 3/15/26 | 90.2 10.8 | 1620 | 41.8 1.4 | 0730 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| Yountville (Ranch 67) | 3/15/26 | 88.0 12.0 | 1550 | 44.2 4.1 | 0642 | 47.0 0.1 | 97 0 | 9 27 | 2.4 | 11.2 1.2 | 1254 | WNW | 298 | 0.00 | 19.96 | 0.156 0.015 | 485 8 | 70 10 |
| Stags Leap Dist (Silverado Vineyards) | 3/15/26 | 88.0 11.3 | 1518 | 45.3 5.4 | 0644 | 47.4 0.5 | 97 1 | 10 26 | 1.8 | 11.4 0.7 | 1731 | SE | 134 | 0.00 | 23.91 | 0.151 0.012 | 468 7 | 80 20 |
| Borreo (Soda Canyon) | 3/15/26 | 84.1 9.9 | 1450 | 44.8 3.7 | 0733 | 47.2 0.5 | 97 0 | 17 21 | 1.8 | 7.9 0.9 | 1318 | ESE | 120 | 0.00 | 23.83 | 0.146 0.015 | 490 11 | 0 0 |
| Wappo Hill Floor | 3/15/26 | 87.5 9.3 | 1426 | 42.6 4.5 | 0704 | 48.6 1.1 | 100 0 | 15 22 | 2.1 | 10.2 1.2 | 1619 | SSE | 162 | 0.00 | 23.28 | 0.150 0.013 | 463 14 | 90 10 |
| Stags Leap Dist (Chimney Rock) | 3/15/26 | 85.2 7.2 | 1456 | 43.8 3.7 | 0756 | 50.3 1.4 | 100 0 | 25 18 | 2.2 | 9.4 2.2 | 1508 | SSE | 168 | 0.00 | 22.51 | 0.137 0.013 | 431 7 | 100 20 |
| Yountville-South (Ranch 87) | 3/15/26 | 88.9 10.9 | 1452 | 43.7 3.8 | 0728 | 49.6 0.8 | 100 0 | 10 29 | 1.8 | 10.0 1.6 | 1457 | SSE | 156 | 0.00 | 23.66 | 0.131 0.012 | 395 11 | 90 10 |
| Yountville-SE (Ranch 85) | 3/15/26 | 85.7 7.4 | 1441 | 44.2 3.6 | 0718 | 49.6 1.1 | 100 0 | 16 21 | 1.5 | 8.5 3.2 | 1636 | SSE | 152 | 0.00 | 22.19 | - | 0 0 | 100 20 |
| Oak Knoll-East (Ranch 53) | 3/15/26 | 84.9 7.2 | 1543 | 43.6 2.4 | 0728 | 48.9 1.3 | 96 0 | 25 12 | 1.7 | 9.5 1.8 | 1443 | SE | 131 | 0.00 | 20.46 | 0.141 0.011 | 446 8 | 90 10 |
| Napa-NW (Ranch 54) | 3/15/26 | 83.6 5.2 | 1622 | 44.8 3.1 | 0614 | 49.3 1.1 | 100 0 | 24 14 | 1.7 | 10.6 0.2 | 1544 | SSE | 166 | 0.00 | 22.69 | - | 0 0 | 100 0 |
| Napa-North (Ranch 29) | 3/15/26 | 83.5 5.4 | 1709 | 43.1 1.2 | 0742 | 49.6 0.8 | 100 0 | 31 8 | 1.8 | 11.0 0.0 | 1515 | SSW | 207 | 0.00 | 20.32 | 0.107 0.011 | 301 5 | 100 20 |
| Max | 92.9 | - | 53.6 | - | 50.3 | 100 | 31 | 2.4 | 14.5 | - | - | 0.00 | 27.89 | 0.164 | 504 | - | |
| Avg | - | - | - | - | 45.6 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 83.5 | - | 41.8 | - | 36.6 | 85 | 4 | 1.4 | 7.9 | - | - | 0.00 | 19.96 | 0.107 | 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 | 3/15/26 | 79.5 4.7 | 1526 | 58.1 6.3 | 0356 | 36.2 7.2 | 68 5 | 12 11 | 2.0 | 13.2 3.2 | 1137 | N | 352 | 0.00 | 29.29 | 0.181 0.041 | 623 72 | 0 0 |
| Mount George (Napa East) | 3/15/26 | 86.0 9.7 | 1600 | 42.8 0.2 | 0745 | 49.6 1.2 | 98 2 | 32 7 | 1.0 | 6.6 1.6 | 1535 | SW | 223 | 0.00 | 11.88 | 0.141 0.011 | 481 7 | 40 10 |
| Napa-East (Palmaz 300') | 3/15/26 | 83.4 5.4 | 1427 | 46.6 3.6 | 0706 | 49.1 0.6 | 100 0 | 28 10 | 1.7 | 8.9 0.9 | 1935 | NE | 47 | 0.00 | 18.31 | 0.131 0.012 | 429 10 | 100 0 |
| 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') | 3/15/26 | 80.9 8.8 | 1537 | 48.1 2.3 | 0131 | 40.0 6.7 | 100 5 | 10 22 | 3.7 | 17.8 5.6 | 1312 | NNE | 12 | 0.00 | 24.80 | 0.169 0.040 | 477 11 | 0 0 |
| Wooden Valley | 3/15/26 | 84.3 9.1 | 1645 | 43.7 0.6 | 0211 | 43.5 2.6 | 98 2 | 9 19 | 2.0 | 11.2 0.1 | 1126 | W | 262 | 0.00 | 24.00 | 0.149 0.011 | 484 12 | 100 20 |
| Napa-West Upper (Truchard) | 3/15/26 | 83.2 5.8 | 1637 | 48.5 4.6 | 0637 | 40.7 7.7 | 100 0 | 0 0 | 2.2 | 10.3 1.8 | 1502 | SSE | 151 | 0.00 | 20.16 | 0.147 0.010 | 475 7 | 0 0 |
| Napa-West Lower (Truchard) | 3/15/26 | 83.5 4.9 | 1549 | 39.1 1.2 | 0736 | 49.5 2.2 | 100 0 | 37 3 | - | - | - | - | - | - | - | - | 100 0 |
| Napa-South (Toyon Farms) | 3/15/26 | 83.0 5.0 | 1626 | 47.2 2.4 | 0706 | 53.6 1.8 | 100 0 | 40 10 | 2.5 | 10.8 0.5 | 1733 | S | 171 | 0.00 | 13.94 | 0.077 0.007 | 231 7 | 50 20 |
| Toyon Remote 1 | 3/15/26 | 80.4 3.8 | 1533 | 40.3 1.4 | 0716 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 3/15/26 | 81.4 5.5 | 1630 | 41.3 0.0 | 0730 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 3/15/26 | 82.5 5.8 | 1714 | 40.6 1.6 | 0731 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 3/15/26 | 83.6 6.2 | 1638 | 44.2 2.5 | 0719 | 50.4 1.7 | 97 0 | 29 11 | 2.2 | 9.7 1.2 | 1543 | S | 178 | 0.00 | 19.35 | 0.142 0.009 | 484 4 | 0 0 |
| Carneros (Saintsbury) | 3/15/26 | 79.8 5.6 | 1611 | 42.4 2.2 | 0637 | 50.1 1.4 | 100 0 | 33 12 | 2.2 | 11.0 0.7 | 1728 | WSW | 243 | 0.00 | 5.62 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 3/15/26 | 81.2 5.2 | 1704 | 43.3 0.5 | 0611 | 49.2 1.0 | - | - | 3.5 | 9.9 0.2 | 1437 | SSW | 208 | 0.00 | 18.31 | 0.139 0.013 | 450 8 | 0 0 |
| Suscol Mtn (Ranch 93) | 3/15/26 | 80.5 6.6 | 1716 | 56.5 9.9 | 0110 | 45.8 2.5 | 81 12 | 18 21 | 4.1 | 18.6 6.6 | 0501 | NNE | 30 | 0.00 | 13.80 | - | - | 0 0 |
| Suscol Upper (Ranch 92) | 3/15/26 | 80.3 6.4 | 1746 | 55.4 8.0 | 0328 | 46.2 2.6 | 84 6 | 27 13 | 1.0 | 13.7 5.1 | 0506 | NW | 323 | 0.00 | 18.16 | - | - | 0 0 |
| Stanly (Ranch 45) | 3/15/26 | 81.4 4.6 | 1714 | 42.8 3.2 | 0656 | 49.6 1.3 | 100 0 | 31 6 | 2.7 | 11.1 1.1 | 1742 | SW | 233 | 0.00 | 19.65 | 0.155 0.008 | 518 5 | 0 0 |
| Carneros Upper (Ranch 81) | 3/15/26 | 82.7 6.0 | 1559 | 51.8 4.5 | 0807 | 49.3 0.5 | - | - | 4.0 | 16.3 2.6 | 1717 | WSW | 250 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 3/15/26 | 80.8 5.2 | 1618 | 39.5 1.7 | 0712 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 3/15/26 | 85.0 5.6 | 1630 | 43.4 1.3 | 0700 | 42.6 5.6 | 100 0 | 0 0 | 1.2 | 8.3 1.8 | 1433 | SSE | 165 | 0.00 | 16.94 | 0.111 0.007 | 369 8 | 0 0 |
| Carneros (Milton Rd) | 3/15/26 | 81.4 5.9 | 1622 | 42.0 2.1 | 0627 | 49.5 1.5 | 96 0 | 31 13 | - | - | - | - | 0.00 | 17.00 | - | - | 0 0 |
| Max | 86.0 | - | 58.1 | - | 53.6 | 100 | 40 | 4.1 | 18.6 | - | - | 0.00 | 29.29 | 0.181 | 623 | - | |
| Avg | - | - | - | - | 46.8 | - | - | 2.4 | - | - | - | - | - | - | - | - | |
| Min | 79.5 | - | 39.1 | - | 36.2 | 68 | 0 | 1.0 | 6.6 | - | - | 0.00 | 5.62 | 0.077 | 231 | - |