| 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 | 4/18/26 | 70.5 0.4 | 1515 | 37.1 0.0 | 0353 | - | - | - | - | - | - | - | 0.00 | 47.36 | - | - | 0 0 |
| Pope Valley (Weeks Lake) | 4/18/26 | 75.0 0.7 | 1522 | 34.9 1.1 | 0518 | 40.0 14.6 | 100 5 | 17 6 | 1.3 | 11.6 4.6 | 1639 | ESE | 110 | 0.00 | 24.05 | 0.156 0.031 | 524 58 | 30 20 |
| 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 | 4/18/26 | 77.7 1.9 | 1607 | 38.5 7.5 | 0600 | 40.9 12.5 | 98 23 | 19 5 | 2.5 | 14.0 8.7 | 1239 | NE | 50 | 0.00 | 21.37 | 0.185 0.035 | 594 64 | 40 20 |
| Dollarhide 1AS Remote | 4/18/26 | 77.3 0.9 | 1604 | 34.6 6.0 | 0532 | 40.5 10.6 | 95 3 | 19 5 | 1.6 | 12.7 8.6 | 0548 | NNW | 335 | - | - | - | - | 30 20 |
| Dollarhide 17B Remote | 4/18/26 | 78.1 1.4 | 1519 | 34.4 6.3 | 0612 | 41.8 10.1 | 100 8 | 19 4 | - | - | - | - | - | - | - | - | 40 20 |
| Dollarhide 18A Remote | 4/18/26 | 77.3 0.3 | 1557 | 33.9 2.9 | 0549 | 40.3 9.4 | 100 4 | 18 3 | - | - | - | - | - | - | - | - | 30 20 |
| Angwin | 4/18/26 | 69.0 1.9 | 1443 | 49.3 4.5 | 0614 | 30.9 12.0 | 57 20 | 17 5 | 3.7 | 11.9 18.1 | 1606 | SSE | 148 | 0.00 | 42.26 | 0.057 0.030 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 4/18/26 | 71.6 2.6 | 1503 | 39.7 1.4 | 0130 | - | - | - | 2.3 | 10.9 11.3 | 1413 | S | 170 | - | - | - | - | 0 0 |
| Deer Park | 4/18/26 | 76.9 1.2 | 1511 | 46.6 4.4 | 0625 | 36.1 14.1 | 74 28 | 15 5 | 2.4 | 12.8 13.0 | 1215 | SW | 235 | 0.00 | 26.38 | 0.146 0.040 | 401 34 | 30 20 |
| Lower Chiles Valley (Brown) | 4/18/26 | 75.3 0.8 | 1551 | 32.5 4.3 | 0630 | 36.6 12.0 | 100 10 | 12 0 | 1.6 | 10.9 10.4 | 1558 | WNW | 284 | 0.00 | 23.68 | 0.166 0.032 | 560 65 | 0 10 |
| Moss Creek Vineyard/Reservior | 4/18/26 | 78.2 4.6 | 1417 | 36.4 6.8 | 0701 | 37.5 12.3 | 94 7 | 12 2 | - | - | - | - | 0.00 | 25.15 | - | - | 40 20 |
| Max | 78.2 | - | 49.3 | - | 41.8 | 100 | 19 | 3.7 | 14.0 | - | - | 0.00 | 47.36 | 0.185 | 594 | - | |
| Avg | - | - | - | - | 38.3 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 69.0 | - | 32.5 | - | 30.9 | 57 | 12 | 1.3 | 10.9 | - | - | 0.00 | 21.37 | 0.057 | 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 | 4/18/26 | 82.5 1.5 | 1345 | 37.4 5.4 | 0643 | 40.7 11.8 | 96 10 | 19 6 | - | - | - | - | 0.00 | 30.66 | - | - | 60 20 |
| 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) | 4/18/26 | 74.6 1.3 | 1501 | 48.0 3.2 | 0634 | 34.8 13.0 | 69 28 | 15 3 | - | - | - | - | 0.00 | 29.18 | - | - | 0 10 |
| Diamond Mtn (McEachran) | 4/18/26 | 76.7 0.5 | 1511 | 44.3 5.6 | 0617 | 36.9 15.1 | 79 21 | 14 4 | - | - | - | - | - | - | - | - | 30 20 |
| St. Helena-North | 4/18/26 | 78.4 1.2 | 1455 | 38.5 6.1 | 0622 | 34.8 16.5 | 85 18 | 12 5 | 2.3 | 12.5 6.1 | 1311 | SSE | 162 | 0.00 | 28.40 | 0.158 0.018 | 450 58 | 60 20 |
| St. Helena (NVV Office) | 4/18/26 | 79.6 0.6 | 1511 | 39.4 6.1 | 0637 | - | - | - | 1.0 | 8.6 9.4 | 1438 | E | 97 | 0.00 | 26.38 | - | - | 70 20 |
| Tiara Fria (East St. Helena) | 4/18/26 | 78.0 0.9 | 1446 | 39.1 5.8 | 0630 | 37.8 15.6 | 93 11 | 12 3 | 1.8 | 11.2 14.2 | 1156 | SSW | 209 | 0.00 | 24.36 | - | - | 60 20 |
| Rutherford Hill Estate | 4/18/26 | 79.1 0.2 | 1438 | 43.8 6.1 | 0607 | 36.5 13.3 | 73 20 | 13 3 | 1.4 | 10.5 8.6 | 1441 | SSW | 199 | 0.00 | 23.16 | 0.148 0.026 | 468 60 | 60 20 |
| Rutherford-North (Mee Ln) | 4/18/26 | 78.0 0.9 | 1658 | 35.8 7.4 | 0600 | 39.0 12.0 | 94 9 | 15 3 | 1.9 | 13.6 12.5 | 1313 | SE | 142 | 0.00 | 22.65 | 0.161 0.032 | 496 57 | 70 20 |
| Rutherford (STS) | 4/18/26 | 80.2 1.7 | 1456 | 36.4 8.0 | 0559 | 40.9 11.7 | 92 12 | 17 3 | 1.8 | 11.4 6.1 | 1501 | SE | 126 | 0.00 | 23.91 | 0.182 0.036 | 586 61 | 70 20 |
| Oakville-NE (Ranch 88) | 4/18/26 | 78.9 0.0 | 1458 | 35.7 6.4 | 0619 | 36.5 13.8 | 92 6 | 10 2 | 1.5 | 14.2 8.3 | 1244 | WSW | 248 | 0.00 | 23.05 | 0.171 0.040 | 539 68 | 0 0 |
| OV561-East | 4/18/26 | 78.9 2.6 | 1545 | 37.9 6.9 | 0640 | - | - | - | - | - | - | - | - | - | - | - | 20 20 |
| Oakville | 4/18/26 | 77.8 1.1 | 1526 | 36.3 7.0 | 0640 | 37.2 14.0 | 96 11 | 9 1 | 2.1 | 13.2 9.0 | 1447 | SE | 141 | 0.00 | 23.59 | 0.178 0.043 | 563 62 | 60 20 |
| OV518-West | 4/18/26 | 77.6 2.3 | 1459 | 37.6 6.5 | 0458 | - | - | - | - | - | - | - | - | - | - | - | 30 20 |
| To Kalon Remote (TKKE) | 4/18/26 | 79.9 0.9 | 1407 | 36.7 5.7 | 0614 | - | - | - | - | - | - | - | - | - | - | - | 70 20 |
| To Kalon | 4/18/26 | 78.0 1.3 | 1520 | 37.3 6.7 | 0555 | 37.8 13.8 | 92 17 | 13 3 | 2.0 | 12.2 7.7 | 1459 | SE | 131 | 0.00 | 25.72 | 0.169 0.041 | 531 49 | 30 20 |
| To Kalon Remote (TKN5) | 4/18/26 | 79.5 2.4 | 1514 | 36.8 6.5 | 0621 | - | - | - | - | - | - | - | - | - | - | - | 50 20 |
| Yountville (Ranch 67) | 4/18/26 | 77.6 0.9 | 1454 | 36.5 6.8 | 0632 | 35.9 13.1 | 94 10 | 9 1 | 2.6 | 12.6 11.0 | 1419 | S | 172 | 0.00 | 21.74 | 0.185 0.042 | 608 48 | 60 20 |
| Stags Leap Dist (Silverado Vineyards) | 4/18/26 | 76.7 0.2 | 1452 | 35.5 7.6 | 0558 | 36.4 12.2 | 95 11 | 10 1 | 2.3 | 12.8 6.7 | 2052 | ESE | 120 | 0.00 | 25.83 | 0.184 0.014 | 575 39 | 10 10 |
| Borreo (Soda Canyon) | 4/18/26 | 75.7 1.0 | 1529 | 37.4 4.5 | 0500 | 36.2 13.3 | 88 9 | 10 1 | 1.5 | 9.3 14.8 | 1347 | S | 170 | 0.00 | 25.72 | 0.171 0.041 | 584 59 | 0 0 |
| Wappo Hill Floor | 4/18/26 | 79.1 1.9 | 1445 | 35.4 7.0 | 0613 | 37.6 13.3 | 100 14 | 10 1 | 2.0 | 11.5 19.1 | 0528 | ESE | 108 | 0.00 | 25.08 | 0.170 0.056 | 518 62 | 70 20 |
| Stags Leap Dist (Chimney Rock) | 4/18/26 | 77.8 1.0 | 1441 | 34.8 7.3 | 0605 | 39.9 10.7 | 99 14 | 14 1 | 2.0 | 12.0 16.3 | 1403 | S | 180 | 0.03 | 24.37 | 0.159 0.044 | 494 58 | 60 20 |
| Yountville-South (Ranch 87) | 4/18/26 | 78.3 1.7 | 1541 | 36.9 6.8 | 0646 | 38.4 12.5 | 100 12 | 10 0 | 1.8 | 12.9 4.8 | 1518 | SSE | 161 | 0.00 | 25.67 | 0.171 0.034 | 539 72 | 60 20 |
| Yountville-SE (Ranch 85) | 4/18/26 | 79.1 1.3 | 1536 | 37.5 7.6 | 0607 | 39.1 12.4 | 96 11 | 12 1 | 1.1 | 8.7 18.4 | 1218 | SW | 216 | 0.00 | 23.95 | - | 0 0 | 40 20 |
| Oak Knoll-East (Ranch 53) | 4/18/26 | 78.8 0.5 | 1451 | 37.9 7.1 | 0612 | 37.4 12.9 | 92 10 | 10 1 | 1.4 | 10.1 16.8 | 1438 | SSW | 206 | 0.00 | 22.43 | 0.173 0.047 | 566 73 | 40 20 |
| Napa-NW (Ranch 54) | 4/18/26 | 80.3 2.6 | 1532 | 38.6 6.3 | 0545 | 37.2 13.3 | 88 13 | 11 1 | 0.8 | 7.8 9.4 | 1401 | S | 185 | 0.00 | 24.86 | - | 0 0 | 70 20 |
| Napa-North (Ranch 29) | 4/18/26 | 78.4 0.9 | 1511 | 38.8 6.8 | 0658 | 39.0 14.2 | 100 22 | 13 3 | 1.4 | 10.4 6.8 | 1424 | SSE | 155 | 0.00 | 22.49 | 0.113 0.038 | 297 79 | 70 20 |
| Max | 82.5 | - | 48.0 | - | 40.9 | 100 | 19 | 2.6 | 14.2 | - | - | 0.03 | 30.66 | 0.185 | 608 | - | |
| Avg | - | - | - | - | 37.6 | - | - | 1.7 | - | - | - | - | - | - | - | - | |
| Min | 74.6 | - | 34.8 | - | 34.8 | 69 | 9 | 0.8 | 7.8 | - | - | 0.00 | 21.74 | 0.113 | 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 | 4/18/26 | 70.6 0.8 | 1255 | 52.3 5.3 | 0635 | 31.3 8.8 | 51 9 | 15 2 | 2.0 | 10.3 13.1 | 1344 | S | 175 | 0.00 | 31.92 | 0.220 0.033 | 861 220 | 0 0 |
| Mount George (Napa East) | 4/18/26 | 76.4 0.6 | 1422 | 38.2 5.0 | 0710 | 37.4 6.6 | 97 12 | 13 3 | 1.1 | 9.8 8.8 | 1437 | WSW | 253 | 0.00 | 14.31 | 0.162 0.038 | 556 65 | 60 20 |
| Napa-East (Palmaz 300') | 4/18/26 | 78.9 1.3 | 1439 | 39.1 5.1 | 0658 | 37.1 10.5 | 92 14 | 14 6 | 1.9 | 10.4 5.5 | 1321 | WSW | 252 | 0.00 | 20.64 | 0.148 0.020 | 447 66 | 70 20 |
| Napa-East (Palmaz 1200') | 4/18/26 | 72.2 1.1 | 1342 | 38.9 3.9 | 0616 | 34.7 11.5 | 82 10 | 17 7 | 2.5 | 11.8 3.2 | 1344 | N | 350 | - | - | 0.164 0.019 | 550 68 | 0 0 |
| Napa-East (Palmaz 1400') | 4/18/26 | 73.4 4.0 | 1343 | 37.7 7.5 | 0534 | 35.3 11.7 | 82 11 | 17 4 | 2.1 | 11.0 10.9 | 1508 | WSW | 251 | 0.00 | 27.92 | 0.164 0.028 | 546 59 | 0 0 |
| Wooden Valley | 4/18/26 | 75.2 1.8 | 1528 | 33.6 5.7 | 0612 | 37.3 13.2 | 98 4 | 14 5 | 1.2 | 12.5 16.2 | 1539 | SW | 226 | 0.00 | 26.48 | 0.163 0.041 | 560 79 | 0 0 |
| Napa-West Upper (Truchard) | 4/18/26 | 78.8 1.7 | 1433 | 44.3 5.4 | 0603 | 38.4 15.2 | 78 5 | 12 3 | 2.3 | 12.6 14.5 | 1459 | S | 182 | 0.00 | 22.19 | 0.181 0.047 | 546 76 | 20 20 |
| Napa-West Lower (Truchard) | 4/18/26 | 82.4 0.8 | 1433 | 34.9 4.5 | 0618 | 38.7 13.6 | 100 10 | 12 3 | - | - | - | - | - | - | - | - | 70 20 |
| Napa-South (Toyon Farms) | 4/18/26 | 79.2 1.0 | 1427 | 41.3 5.9 | 0627 | 44.0 11.9 | 92 4 | 19 4 | 1.8 | 10.5 4.7 | 1534 | S | 169 | 0.00 | 15.95 | 0.092 0.019 | 245 49 | 40 20 |
| Toyon Remote 1 | 4/18/26 | 79.1 1.8 | 1356 | 33.0 5.7 | 0515 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 4/18/26 | 78.1 0.9 | 1433 | 36.6 4.6 | 0632 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 4/18/26 | 79.4 1.0 | 1434 | 36.8 5.7 | 0633 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 4/18/26 | 77.6 1.9 | 1433 | 40.1 4.5 | 0527 | 39.8 14.5 | 90 5 | 13 1 | 2.0 | 9.6 10.3 | 1418 | SSE | 155 | 0.00 | 21.57 | 0.167 0.036 | 551 70 | 100 20 |
| Carneros (Saintsbury) | 4/18/26 | 76.9 2.3 | 1429 | 39.0 5.3 | 0558 | 40.9 14.0 | 89 5 | 15 5 | 2.0 | 10.4 4.9 | 1246 | SE | 134 | 0.00 | 7.63 | - | - | 20 20 |
| Suscol Lower (Ranch 35) | 4/18/26 | 77.8 1.1 | 1429 | 38.5 5.4 | 0630 | 38.7 13.5 | - | - | 3.5 | 12.4 7.6 | 1234 | SE | 128 | 0.00 | 20.34 | 0.170 0.037 | 509 61 | 30 20 |
| Suscol Mtn (Ranch 93) | 4/18/26 | 77.8 1.8 | 1306 | 46.5 3.0 | 0316 | 35.5 14.9 | 74 33 | 15 6 | 2.4 | 13.8 7.9 | 1514 | NW | 321 | 0.00 | 16.11 | - | - | 20 20 |
| Suscol Upper (Ranch 92) | 4/18/26 | 76.1 2.3 | 1356 | 47.8 0.4 | 0528 | 36.6 14.5 | 77 26 | 15 6 | 0.6 | 11.2 4.9 | 1442 | SSE | 158 | 0.00 | 19.99 | - | - | 20 20 |
| Stanly (Ranch 45) | 4/18/26 | 81.1 4.5 | 1418 | 38.8 6.5 | 0356 | 40.5 14.0 | 94 8 | 14 4 | 3.5 | 10.2 5.9 | 1818 | SSW | 207 | 0.00 | 22.18 | 0.189 0.040 | 590 87 | 70 20 |
| Carneros Upper (Ranch 81) | 4/18/26 | 77.6 3.0 | 1408 | 48.3 2.1 | 0519 | 37.4 13.9 | - | - | 2.4 | 11.5 12.4 | 1508 | SSW | 199 | - | - | - | - | 20 20 |
| Carneros (Mitsuko) | 4/18/26 | 78.2 2.3 | 1352 | 35.3 4.0 | 0521 | - | - | - | - | - | - | - | - | - | - | - | 20 20 |
| Carneros Lower (Ranch 81) | 4/18/26 | 79.1 1.5 | 1431 | 38.6 4.6 | 0622 | 39.6 12.2 | 100 14 | 0 14 | 0.8 | 9.7 4.2 | 1304 | SSE | 160 | 0.00 | 17.96 | 0.141 0.035 | 473 61 | 20 20 |
| Carneros (Milton Rd) | 4/18/26 | 77.6 2.0 | 1419 | 37.2 2.6 | 0457 | 40.6 12.7 | 94 2 | 16 4 | - | - | - | - | 0.00 | 18.04 | - | - | 20 20 |
| Max | 82.4 | - | 52.3 | - | 44.0 | 100 | 19 | 3.5 | 13.8 | - | - | 0.00 | 31.92 | 0.220 | 861 | - | |
| Avg | - | - | - | - | 38.0 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 70.6 | - | 33.0 | - | 31.3 | 51 | 0 | 0.6 | 9.6 | - | - | 0.00 | 7.63 | 0.092 | 245 | - |