| 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 | 8/15/26 | 78.6 2.5 | 1645 | 47.5 1.4 | 0447 | - | - | - | - | - | - | - | 0.00 | 0.00 | - | - | 40 20 |
| Pope Valley (Weeks Lake) | 8/15/26 | 84.9 5.1 | 1543 | 46.3 3.8 | 0345 | 52.0 1.1 | 100 6 | 28 12 | 1.9 0.3 | 14.2 2.0 | 1426 | SSW | 210 | 0.00 | 0.00 | 0.178 0.028 | 541 57 | 60 20 |
| Dollarhide Base | 8/15/26 | 89.5 7.0 | 1604 | 55.0 1.5 | 0307 | 56.9 0.4 | 96 4 | 28 15 | 3.0 0.5 | 14.5 0.7 | 1411 | SSE | 167 | 0.00 | 0.00 | 0.205 0.038 | 591 72 | 30 10 |
| Dollarhide 1AS Remote | 8/15/26 | 91.0 5.8 | 1631 | 51.8 4.9 | 0339 | 55.8 0.1 | 93 4 | 26 14 | 3.0 0.7 | 11.8 5.0 | 1402 | SW | 216 | - | - | - | - | 30 10 |
| Dollarhide 16A Remote | 8/15/26 | 88.3 8.3 | 1610 | 51.8 4.5 | 0334 | 56.4 0.0 | 98 5 | 29 18 | - | - | - | - | - | - | - | - | 30 10 |
| Dollarhide 18A Remote | 8/15/26 | 87.6 7.6 | 1644 | 50.1 5.8 | 0325 | 55.4 0.1 | 98 6 | 28 18 | - | - | - | - | - | - | - | - | 30 10 |
| Hardin Rd (Eakle) | 8/15/26 | 86.8 5.8 | 1503 | 52.8 4.4 | 0327 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Angwin | 8/15/26 | 76.5 4.6 | 1533 | 54.4 5.8 | 0534 | 52.6 0.1 | 94 6 | 36 15 | 2.5 0.0 | 11.4 1.7 | 1424 | SE | 146 | 0.00 | 0.00 | 0.030 0.012 | 0 0 | 70 10 |
| Lower Angwin (Pioneer) | 8/15/26 | 78.4 4.6 | 1629 | 43.7 8.2 | 0059 | - | - | - | 1.7 0.5 | 10.2 0.3 | 1429 | WSW | 240 | - | - | - | - | 60 20 |
| Las Posadas (Cal Fire) | 8/15/26 | 81.5 6.8 | 1602 | 51.9 1.0 | 0644 | 54.5 0.5 | 100 0 | 33 18 | 7.1 0.4 | 18.6 0.6 | 2036 | SW | 234 | 0.00 | 0.00 | 0.186 0.049 | 559 111 | - |
| Deer Park | 8/15/26 | 84.5 6.0 | 1639 | 54.9 0.2 | 0622 | 54.7 0.8 | 95 3 | 36 9 | 2.5 0.8 | 13.9 0.5 | 1552 | WNW | 294 | 0.00 | 0.00 | 0.126 0.022 | 342 49 | 20 20 |
| Lower Chiles Valley (Brown) | 8/15/26 | 83.4 6.5 | 1612 | 53.9 0.2 | 0116 | 54.2 0.5 | 96 2 | 30 15 | 3.2 0.4 | 14.2 1.6 | 1437 | W | 280 | 0.00 | 0.00 | 0.181 0.030 | 576 63 | 20 20 |
| Moss Creek Vineyard/Reservior | 8/14/26 | 80.0 4.3 | 1608 | 55.2 0.9 | 0048 | 53.6 0.6 | 94 4 | 40 4 | - | - | - | - | 0.00 | 0.00 | - | - | 0 0 |
| Max | 91.0 | - | 55.2 | - | 56.9 | 100 | 40 | 7.1 | 18.6 | - | - | 0.00 | 0.00 | 0.205 | 591 | - | |
| Avg | - | - | - | - | 54.6 | - | - | 3.1 | - | - | - | - | - | - | - | - | |
| Min | 76.5 | - | 43.7 | - | 52.0 | 93 | 26 | 1.7 | 10.2 | - | - | 0.00 | 0.00 | 0.030 | 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 | 8/15/26 | 84.9 1.2 | 1414 | 52.9 0.6 | 0129 | 56.2 0.4 | 95 1 | 43 1 | - | - | - | - | 0.00 | 0.00 | - | - | 80 20 |
| Diamond Mtn (Schramsberg) | 8/15/26 | 83.3 7.5 | 1602 | 53.4 0.7 | 0650 | 54.6 1.3 | 100 6 | 39 9 | - | - | - | - | 0.00 | 0.00 | - | - | 20 20 |
| Diamond Mtn (McEachran) | 8/15/26 | 82.4 3.5 | 1621 | 54.4 0.1 | 0107 | 54.6 0.6 | 94 5 | 41 3 | - | - | - | - | - | - | - | - | 50 20 |
| St. Helena-North | 8/15/26 | 87.4 7.7 | 1604 | 53.8 0.0 | 0101 | 53.1 0.8 | 84 0 | 32 8 | 1.7 | 13.2 1.1 | 1829 | SSE | 166 | 0.00 | 0.00 | 0.154 0.015 | 468 50 | 30 10 |
| St. Helena (NVV Office) | 8/15/26 | 88.1 7.7 | 1604 | 57.2 0.0 | 0101 | - | - | - | 1.4 | 8.6 2.4 | 1658 | SE | 135 | 0.00 | 0.00 | - | - | 30 10 |
| Tiara Fria (East St. Helena) | 8/15/26 | 85.1 7.4 | 1547 | 54.4 1.3 | 0059 | 55.2 0.9 | 86 2 | 36 11 | 2.0 | 12.3 0.8 | 1656 | SE | 136 | 0.00 | 0.00 | - | - | 60 20 |
| Prisoner Winery | 8/15/26 | 87.8 6.1 | 1552 | 51.6 0.5 | 0115 | 55.2 0.9 | 97 1 | 35 7 | 1.3 | 8.9 1.6 | 1658 | SSE | 167 | 0.00 | 0.00 | 0.121 0.006 | 332 45 | 30 10 |
| Rutherford Hill Estate | 8/15/26 | 85.1 6.4 | 1523 | 54.4 0.1 | 0058 | 55.3 0.9 | 93 0 | 38 8 | 1.3 | 13.2 2.2 | 1703 | ESE | 117 | 0.00 | 0.00 | 0.146 0.023 | 462 61 | 40 20 |
| Rutherford-North (Mee Ln) | 8/15/26 | 84.2 6.2 | 1538 | 50.1 0.2 | 0103 | 54.6 0.8 | 92 1 | 39 9 | 2.7 | 15.6 2.2 | 1755 | SSE | 153 | 0.00 | 0.00 | 0.154 0.030 | 446 82 | 60 20 |
| Rutherford (STS) | 8/15/26 | 86.2 6.8 | 1510 | 49.8 0.7 | 0109 | 57.1 0.7 | 92 0 | 42 9 | 2.0 | 13.2 1.9 | 1718 | NE | 47 | 0.00 | 0.00 | 0.170 0.042 | 531 122 | 0 10 |
| Oakville-NE (Ranch 88) | 8/15/26 | 85.1 7.2 | 1518 | 50.7 0.0 | 0101 | 53.5 0.6 | 86 2 | 35 9 | 2.1 | 14.9 3.1 | 1647 | S | 172 | 0.00 | 0.00 | 0.159 0.039 | 469 120 | 100 0 |
| OV561-East | 8/15/26 | 85.2 5.3 | 1619 | 53.8 0.4 | 0132 | - | - | - | - | - | - | - | - | - | - | - | 90 20 |
| Oakville | 8/15/26 | 81.9 6.2 | 1521 | 52.6 0.4 | 0117 | 54.7 0.7 | 92 2 | 41 9 | 3.2 | 16.5 2.2 | 1728 | SE | 132 | 0.00 | 0.00 | 0.172 0.047 | 530 142 | 100 20 |
| OV518-West | 8/15/26 | 81.8 6.8 | 1508 | 53.4 0.5 | 0106 | - | - | - | - | - | - | - | - | - | - | - | 100 20 |
| To Kalon Remote (TKKE) | 8/15/26 | 84.4 6.0 | 1513 | 51.4 0.9 | 0124 | - | - | - | - | - | - | - | - | - | - | - | 90 20 |
| To Kalon | 8/15/26 | 82.6 6.1 | 1525 | 52.0 1.0 | 0128 | 55.6 0.7 | 94 2 | 42 9 | 3.0 | 13.8 3.1 | 1736 | SE | 141 | 0.00 | 0.00 | 0.163 0.047 | 486 140 | 60 20 |
| To Kalon Remote (TKN5) | 8/15/26 | 85.2 6.4 | 1507 | 52.5 1.4 | 0130 | - | - | - | - | - | - | - | - | - | - | - | 90 20 |
| Yountville (Ranch 67) | 8/15/26 | 80.4 6.5 | 1455 | 53.4 2.6 | 0059 | 54.0 0.6 | 89 2 | 42 8 | 3.3 | 17.0 0.0 | 1631 | E | 88 | 0.00 | 0.00 | 0.167 0.040 | 552 120 | 100 20 |
| Stags Leap Dist (Silverado Vineyards) | 8/15/26 | 81.1 6.4 | 1505 | 53.5 2.1 | 0048 | 54.0 0.5 | 91 2 | 42 8 | 2.5 | 17.4 0.2 | 1834 | SSE | 154 | 0.00 | 0.00 | 0.153 0.042 | 466 132 | 80 10 |
| Borreo (Soda Canyon) | 8/14/26 | 73.2 2.2 | 1548 | 51.4 1.6 | 2343 | 53.2 0.1 | 94 1 | 51 1 | 2.1 | 10.6 3.8 | 1716 | E | 89 | 0.00 | 0.00 | 0.106 0.012 | 357 49 | 90 10 |
| Wappo Hill Floor | 8/15/26 | 82.0 6.0 | 1448 | 54.4 1.0 | 0139 | 55.3 0.7 | 100 10 | 43 5 | 2.8 | 16.5 2.8 | 1748 | SE | 125 | 0.00 | 0.00 | 0.161 0.044 | 495 135 | 90 20 |
| Stags Leap Dist (Chimney Rock) | 8/15/26 | 80.1 5.1 | 1508 | 55.1 1.9 | 0101 | 56.9 0.6 | 93 1 | 51 7 | 2.6 | 12.8 0.1 | 1522 | SE | 133 | 0.00 | 0.00 | 0.138 0.038 | 437 118 | 100 20 |
| Yountville-South (Ranch 87) | 8/15/26 | 82.7 5.5 | 1447 | 50.2 2.1 | 0207 | 55.2 0.2 | 97 2 | 41 8 | 1.7 | 11.3 1.4 | 1647 | SSW | 204 | 0.00 | 0.00 | 0.151 0.043 | 484 140 | 100 0 |
| Yountville-SE (Ranch 85) | 8/15/26 | 80.1 6.0 | 1449 | 53.4 3.2 | 0211 | 55.8 0.4 | 94 2 | 46 8 | 2.5 | 14.4 2.0 | 1530 | SSE | 154 | 0.00 | 0.00 | - | 0 0 | 100 20 |
| Oak Knoll-East (Ranch 53) | 8/15/26 | 80.2 5.6 | 1424 | 51.5 1.5 | 0144 | 54.5 0.4 | 91 0 | 43 8 | 2.3 | 13.3 0.5 | 1636 | SE | 143 | 0.00 | 0.00 | 0.157 0.041 | 498 122 | 90 20 |
| Napa-NW (Ranch 54) | 8/15/26 | 82.4 5.6 | 1558 | 51.2 1.2 | 0129 | 54.5 0.3 | 92 2 | 41 8 | 0.6 | 8.6 0.1 | 1423 | SW | 227 | 0.00 | 0.00 | - | 0 0 | 100 0 |
| Napa-North (Ranch 29) | 8/15/26 | 78.0 5.0 | 1555 | 55.1 2.5 | 0058 | 56.3 1.1 | 100 10 | 51 3 | 1.9 | 16.1 2.0 | 1504 | SSW | 194 | 0.00 | 0.00 | 0.120 0.023 | 383 74 | 100 20 |
| Max | 88.1 | - | 57.2 | - | 57.1 | 100 | 51 | 3.3 | 17.4 | - | - | 0.00 | 0.00 | 0.172 | 552 | - | |
| Avg | - | - | - | - | 55.0 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 73.2 | - | 49.8 | - | 53.1 | 84 | 32 | 0.6 | 8.6 | - | - | 0.00 | 0.00 | 0.106 | 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 | 8/15/26 | 77.8 5.9 | 1541 | 50.0 1.7 | 0627 | 54.0 0.4 | 100 0 | 45 9 | 1.5 | 13.5 2.2 | 1516 | SSE | 160 | 0.00 | 0.00 | 0.185 0.030 | 741 17 | 40 10 |
| Mount George (Napa East) | 8/15/26 | 76.2 4.4 | 1547 | 53.1 5.2 | 2333 | 55.2 1.9 | 94 0 | 51 5 | 1.7 | 10.8 1.8 | 1434 | WSW | 247 | 0.00 | 0.00 | 0.140 0.035 | 468 119 | 70 10 |
| Napa-East (Palmaz 300') | 8/15/26 | 82.2 6.5 | 1649 | 53.8 3.6 | 2330 | 55.7 0.8 | 96 5 | 43 6 | 1.2 | 10.9 2.0 | 1559 | W | 264 | 0.00 | 0.00 | 0.137 0.035 | 434 106 | 70 20 |
| Napa-East (Palmaz 1200') | 7/3/26 | 79.0 6.0 | 1616 | 49.0 3.8 | 0539 | 47.1 0.2 | 100 0 | 45 38 | 2.0 | 12.7 4.5 | 1533 | NW | 313 | - | - | 0.192 0.009 | 656 3 | 30 20 |
| Napa-East (Palmaz 1400') | 8/15/26 | 74.3 5.9 | 1538 | 53.5 1.0 | 0347 | 55.3 0.6 | 100 0 | 55 9 | 3.0 | 12.9 1.2 | 1511 | SW | 218 | 0.01 | 0.03 | 0.132 0.045 | 473 141 | 70 10 |
| Wooden Valley | 8/15/26 | 78.6 5.8 | 1651 | 55.4 0.0 | 0425 | 54.0 0.8 | 92 2 | 42 9 | 4.2 | 13.1 0.1 | 1455 | WSW | 252 | 0.00 | 0.00 | 0.170 0.054 | 560 167 | 60 20 |
| Napa-West Upper (Truchard) | 8/15/26 | 79.5 4.2 | 1544 | 52.3 3.3 | 0037 | 50.6 2.2 | 100 0 | 0 0 | 3.6 | 14.8 1.7 | 1556 | SSE | 163 | 0.00 | 0.00 | 0.162 0.034 | 495 104 | 100 20 |
| Napa-West Lower (Truchard) | 8/15/26 | 79.4 4.5 | 1351 | 47.6 5.3 | 0047 | 54.6 0.0 | 94 3 | 45 5 | - | - | - | - | - | - | - | - | 100 20 |
| Napa-South (Toyon Farms) | 8/15/26 | 76.6 3.5 | 1339 | 54.0 2.9 | 2358 | 57.2 0.4 | 99 4 | 56 4 | 4.1 | 14.8 3.0 | 1425 | SSE | 153 | 0.00 | 0.00 | 0.092 0.015 | 289 40 | 100 20 |
| Toyon Remote 1 | 8/15/26 | 79.0 5.3 | 1328 | 53.9 2.8 | 2350 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 8/15/26 | 76.7 3.8 | 1319 | 54.9 2.7 | 0006 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 8/15/26 | 78.0 3.8 | 1804 | 53.0 2.9 | 2352 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 8/15/26 | 77.8 4.8 | 1647 | 54.5 3.1 | 2352 | 54.8 0.2 | 95 5 | 46 7 | 2.5 | 13.7 5.3 | 1423 | SE | 145 | 0.00 | 0.00 | 0.152 0.027 | 497 80 | 100 20 |
| Carneros (Saintsbury) | 8/15/26 | 75.5 4.0 | 1452 | 51.9 4.0 | 0057 | 54.4 0.2 | 100 9 | 52 4 | 4.8 | 15.3 7.5 | 1422 | SSE | 162 | 0.00 | 0.00 | - | - | 70 20 |
| Suscol Lower (Ranch 35) | 8/15/26 | 76.0 3.0 | 1631 | 53.5 4.1 | 2334 | 54.8 0.3 | 92 4 | 50 2 | 4.1 | 15.3 5.3 | 1433 | S | 182 | 0.00 | 0.00 | 0.145 0.016 | 454 52 | 60 10 |
| Suscol Mtn (Ranch 93) | 8/15/26 | 79.0 5.5 | 1508 | 54.3 0.0 | 0049 | 55.6 1.0 | 99 0 | 52 6 | 5.5 | 16.6 2.7 | 1532 | WNW | 303 | 0.00 | 0.00 | - | - | 100 20 |
| Suscol Upper (Ranch 92) | 8/15/26 | 74.5 5.6 | 1638 | 54.8 0.2 | 0057 | 11.9 19.8 | 100 0 | 0 0 | 3.5 | 15.3 4.5 | 1349 | SSW | 194 | 0.00 | 0.00 | - | - | 40 10 |
| Stanly (Ranch 45) | 8/15/26 | 75.0 3.0 | 1516 | 52.6 4.5 | 2339 | 54.8 0.2 | 91 4 | 53 3 | 4.5 | 17.2 3.5 | 1552 | S | 178 | 0.00 | 0.00 | 0.161 0.016 | 519 45 | 100 20 |
| Carneros Upper (Ranch 81) | 8/15/26 | 77.5 4.9 | 1513 | 54.8 2.1 | 2242 | 45.3 9.3 | - | - | 7.6 | 23.4 0.7 | 1905 | W | 272 | - | - | - | - | 70 10 |
| Carneros (Mitsuko) | 8/15/26 | 76.0 3.1 | 1719 | 55.3 2.6 | 2305 | - | - | - | - | - | - | - | - | - | - | - | 100 20 |
| Carneros Lower (Ranch 81) | 8/15/26 | 78.5 5.0 | 1427 | 55.8 1.8 | 2259 | 55.7 0.3 | 92 2 | 49 4 | 1.3 | 13.2 2.4 | 1439 | SSE | 166 | 0.00 | 0.00 | 0.143 0.026 | 463 81 | 100 20 |
| Carneros (Milton Rd) | 8/15/26 | 75.2 3.1 | 1636 | 54.1 3.8 | 2328 | 55.0 0.1 | 92 4 | 53 2 | - | - | - | - | 0.00 | 0.00 | - | - | 80 20 |
| Max | 82.2 | - | 55.8 | - | 57.2 | 100 | 56 | 7.6 | 23.4 | - | - | 0.01 | 0.03 | 0.185 | 741 | - | |
| Avg | - | - | - | - | 51.7 | - | - | 3.5 | - | - | - | - | - | - | - | - | |
| Min | 74.3 | - | 47.6 | - | 11.9 | 91 | 0 | 1.2 | 10.8 | - | - | 0.00 | 0.00 | 0.092 | 289 | - |