| 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 | 9/4/26 | 72.8 8.0 | 1528 | 42.9 5.6 | 0646 | - | - | - | - | - | - | - | 0.00 | 0.82 | - | - | 50 10 |
| Pope Valley (Weeks Lake) | 9/4/26 | 77.0 8.5 | 1643 | 40.9 11.2 | 0609 | 46.3 8.1 | 100 6 | 30 24 | 1.6 1.0 | 13.6 5.0 | 1724 | W | 275 | 0.00 | 0.03 | 0.141 0.087 | 460 312 | 20 20 |
| Dollarhide Base | 9/4/26 | 81.2 9.5 | 1543 | 47.8 9.2 | 0613 | 50.8 6.3 | 99 9 | 30 31 | 2.5 1.9 | 16.9 2.3 | 1712 | SSW | 198 | 0.00 | 0.00 | 0.176 0.104 | 556 354 | 20 20 |
| Dollarhide 1AS Remote | 9/4/26 | 81.8 9.2 | 1653 | 42.4 11.0 | 0526 | 48.0 8.6 | 94 4 | 29 28 | 2.1 2.1 | 16.2 2.3 | 1737 | SW | 224 | - | - | - | - | 40 20 |
| Dollarhide 16A Remote | 9/4/26 | 80.5 8.8 | 1412 | 46.6 8.7 | 0629 | 50.3 6.6 | 99 5 | 31 27 | - | - | - | - | - | - | - | - | 20 20 |
| Dollarhide 18A Remote | 9/4/26 | 81.4 11.3 | 1508 | 40.5 9.7 | 0526 | 47.5 8.6 | 99 4 | 31 31 | - | - | - | - | - | - | - | - | 20 20 |
| Hardin Rd (Eakle) | 9/4/26 | 78.8 9.2 | 1615 | 44.5 10.4 | 0606 | - | - | - | - | - | - | - | - | - | - | - | 20 20 |
| Angwin | 9/4/26 | 69.1 11.3 | 1544 | 47.6 3.6 | 0653 | 47.4 6.4 | 100 0 | 36 46 | 2.2 1.8 | 14.4 1.4 | 1613 | SE | 129 | 0.01 | 0.30 | 0.020 0.018 | 0 0 | 50 10 |
| Lower Angwin (Pioneer) | 9/4/26 | 72.0 10.9 | 1552 | 38.5 13.8 | 0528 | - | - | - | 1.5 1.4 | 11.2 3.6 | 1847 | W | 259 | - | - | - | - | 50 10 |
| Las Posadas (Cal Fire) | 9/4/26 | 73.5 11.1 | 1635 | 47.2 7.3 | 0538 | 49.2 6.7 | 100 1 | 36 45 | 5.6 2.1 | 19.4 0.4 | 1915 | SW | 231 | 0.01 | 0.23 | 0.155 0.119 | 495 355 | - |
| Deer Park | 9/4/26 | 77.8 11.1 | 1559 | 54.3 2.5 | 0642 | 49.6 6.7 | 92 3 | 30 35 | 3.9 0.6 | 16.2 0.4 | 1648 | SW | 223 | 0.00 | 0.04 | 0.134 0.099 | 371 279 | 40 20 |
| Lower Chiles Valley (Brown) | 9/4/26 | 77.3 9.3 | 1634 | 44.8 10.4 | 0030 | 48.5 7.5 | 100 6 | 30 39 | 1.8 0.6 | 14.0 3.2 | 1756 | WNW | 290 | 0.00 | 0.14 | 0.159 0.099 | 532 339 | 20 20 |
| Moss Creek Vineyard/Reservior | 9/4/26 | 80.3 13.2 | 1521 | 47.4 5.4 | 0610 | 49.4 6.8 | 98 5 | 28 43 | - | - | - | - | 0.00 | 0.04 | - | - | 20 20 |
| Max | 81.8 | - | 54.3 | - | 50.8 | 100 | 36 | 5.6 | 19.4 | - | - | 0.01 | 0.82 | 0.176 | 556 | - | |
| Avg | - | - | - | - | 48.7 | - | - | 2.6 | - | - | - | - | - | - | - | - | |
| Min | 69.1 | - | 38.5 | - | 46.3 | 92 | 28 | 1.5 | 11.2 | - | - | 0.00 | 0.00 | 0.020 | 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 | 9/4/26 | 80.4 11.7 | 1514 | 50.3 5.1 | 0059 | 51.9 6.4 | 99 1 | 30 41 | - | - | - | - | 0.00 | 0.09 | - | - | 40 20 |
| Diamond Mtn (Schramsberg) | 9/4/26 | 75.8 6.1 | 1453 | 51.2 3.7 | 0718 | 50.1 6.9 | 100 0 | 30 30 | - | - | - | - | 0.01 | 0.13 | - | - | 10 10 |
| Diamond Mtn (McEachran) | 9/4/26 | 75.9 6.8 | 1522 | 51.7 4.4 | 0720 | 50.0 6.8 | 97 0 | 31 31 | - | - | - | - | - | - | - | - | 0 0 |
| St. Helena-North | 9/4/26 | 80.3 7.7 | 1514 | 51.7 3.9 | 0514 | 48.8 7.0 | 93 7 | 25 29 | 1.7 | 12.9 3.3 | 1502 | SSE | 167 | 0.00 | 0.11 | 0.141 0.087 | 456 284 | 20 20 |
| St. Helena (NVV Office) | 9/4/26 | 80.0 6.8 | 1600 | 49.0 8.4 | 0656 | - | - | - | 1.4 | 12.1 1.9 | 1717 | WSW | 249 | 0.00 | 0.04 | - | - | 40 20 |
| Tiara Fria (East St. Helena) | 9/4/26 | 78.9 8.5 | 1615 | 49.2 5.2 | 0704 | 49.6 7.3 | 97 4 | 31 32 | 1.8 | 14.5 1.4 | 1747 | WSW | 247 | 0.00 | 0.02 | - | - | 40 20 |
| Prisoner Winery | 9/4/26 | 80.0 6.6 | 1446 | 48.2 4.9 | 0530 | 49.6 7.5 | 98 2 | 30 27 | 1.2 | 12.1 0.7 | 1605 | SSW | 198 | 0.00 | 0.06 | 0.028 0.019 | 15 15 | 20 20 |
| Rutherford Hill Estate | 9/4/26 | 81.3 11.8 | 1457 | 51.5 4.9 | 0700 | 51.6 5.2 | 100 5 | 30 36 | 1.6 | 13.8 0.9 | 1631 | WNW | 284 | 0.01 | 0.08 | 0.144 0.103 | 465 342 | 40 20 |
| Rutherford-North (Mee Ln) | 9/4/26 | 81.1 7.7 | 1524 | 44.0 6.9 | 0704 | 48.6 7.3 | 97 3 | 30 30 | 1.8 | 14.7 0.9 | 1634 | WSW | 238 | 0.00 | 0.06 | 0.152 0.094 | 486 320 | 40 20 |
| Rutherford (STS) | 9/4/26 | 83.0 7.8 | 1526 | 45.6 5.6 | 0533 | 50.7 7.0 | 92 0 | 33 28 | 1.9 | 17.2 3.4 | 1730 | WSW | 249 | 0.01 | 0.05 | 0.174 0.106 | 558 345 | 100 20 |
| Oakville-NE (Ranch 88) | 9/4/26 | 80.9 9.6 | 1529 | 46.4 3.5 | 0057 | 49.5 6.5 | 100 0 | 28 33 | 1.1 | 13.0 2.1 | 1639 | NNW | 328 | 0.01 | 0.04 | 0.141 0.092 | 456 328 | 100 10 |
| OV561-East | 9/4/26 | 82.6 11.6 | 1545 | 50.5 3.7 | 0022 | - | - | - | - | - | - | - | - | - | - | - | 40 20 |
| Oakville | 9/4/26 | 80.2 9.1 | 1537 | 48.0 4.2 | 0101 | 50.0 6.8 | 97 2 | 29 33 | 2.2 | 17.0 1.8 | 1739 | WSW | 253 | 0.00 | 0.03 | 0.168 0.110 | 548 388 | 80 20 |
| OV518-West | 9/4/26 | 77.3 6.7 | 1543 | 49.3 4.4 | 0043 | - | - | - | - | - | - | - | - | - | - | - | 80 20 |
| To Kalon Remote (TKKE) | 9/4/26 | 80.5 5.8 | 1544 | 47.6 7.3 | 0525 | - | - | - | - | - | - | - | - | - | - | - | 100 20 |
| To Kalon | 9/4/26 | 80.1 8.1 | 1520 | 48.6 7.1 | 0531 | 50.5 7.1 | 99 3 | 31 32 | 2.2 | 15.6 1.8 | 1756 | WSW | 251 | 0.00 | 0.00 | 0.166 0.103 | 538 356 | 70 20 |
| To Kalon Remote (TKN5) | 9/4/26 | 80.3 7.4 | 1547 | 48.0 8.6 | 0541 | - | - | - | - | - | - | - | - | - | - | - | 100 20 |
| Yountville (Ranch 67) | 9/4/26 | 78.2 9.8 | 1636 | 47.4 7.2 | 0057 | 49.9 6.4 | 96 2 | 29 39 | 1.9 | 12.2 0.7 | 1743 | SW | 229 | 0.01 | 0.05 | 0.175 0.115 | 619 414 | 80 20 |
| Stags Leap Dist (Silverado Vineyards) | 9/4/26 | 79.3 11.4 | 1540 | 48.4 7.0 | 0047 | 50.4 6.4 | 96 3 | 28 41 | 1.1 | 10.3 3.4 | 1607 | NNE | 20 | 0.00 | 0.07 | 0.163 0.117 | 560 434 | 60 10 |
| Borreo (Soda Canyon) | 9/4/26 | 76.1 12.2 | 1514 | 48.9 4.7 | 0044 | 50.7 5.9 | 97 1 | 33 47 | 1.7 | 21.4 10.4 | 1537 | E | 79 | 0.00 | 0.31 | 0.164 0.135 | 572 483 | 60 10 |
| Wappo Hill Floor | 9/4/26 | 79.9 10.7 | 1541 | 48.0 6.9 | 0101 | 51.4 6.4 | 100 0 | 30 42 | 2.3 | 15.7 3.7 | 1604 | SSE | 154 | 0.01 | 0.10 | 0.163 0.125 | 526 426 | 100 20 |
| Stags Leap Dist (Chimney Rock) | 9/4/26 | 79.7 11.0 | 1536 | 47.7 7.5 | 0101 | 54.3 4.7 | 99 2 | 36 42 | 1.9 | 16.2 5.0 | 1603 | SSE | 147 | 0.00 | 0.10 | 0.151 0.118 | 507 415 | 100 20 |
| Yountville-South (Ranch 87) | 9/4/26 | 78.9 9.6 | 1612 | 48.8 5.1 | 0049 | 52.6 6.0 | 100 0 | 31 39 | 1.5 | 14.0 2.4 | 1426 | SW | 216 | 0.00 | 0.09 | 0.144 0.102 | 464 343 | 100 10 |
| Yountville-SE (Ranch 85) | 9/4/26 | 78.9 10.3 | 1627 | 49.8 4.8 | 0059 | 53.0 5.6 | 100 0 | 31 42 | 1.7 | 17.8 8.2 | 1603 | ESE | 113 | 0.01 | 0.08 | - | 0 0 | 80 20 |
| Oak Knoll-East (Ranch 53) | 9/4/26 | 79.8 10.9 | 1532 | 49.8 2.4 | 0101 | 51.8 5.9 | 96 1 | 27 44 | 1.6 | 20.9 7.8 | 1437 | SSW | 205 | 0.00 | 0.15 | 0.170 0.126 | 567 442 | 100 10 |
| Napa-NW (Ranch 54) | 9/4/26 | 79.4 8.3 | 1553 | 51.0 1.2 | 0057 | 52.0 6.2 | 100 0 | 28 39 | 1.4 | 13.0 3.9 | 1658 | SSW | 212 | 0.00 | 0.18 | - | 0 0 | 100 10 |
| Napa-North (Ranch 29) | 9/4/26 | 77.5 10.4 | 1436 | 50.4 4.0 | 0059 | 53.5 6.1 | 100 0 | 36 40 | 1.6 | 14.4 1.4 | 1639 | S | 170 | 0.00 | 0.10 | 0.110 0.084 | 337 269 | 100 20 |
| Max | 83.0 | - | 51.7 | - | 54.3 | 100 | 36 | 2.3 | 21.4 | - | - | 0.01 | 0.31 | 0.175 | 619 | - | |
| Avg | - | - | - | - | 50.9 | - | - | 1.7 | - | - | - | - | - | - | - | - | |
| Min | 75.8 | - | 44.0 | - | 48.6 | 92 | 25 | 1.1 | 10.3 | - | - | 0.00 | 0.00 | 0.028 | 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 | 9/4/26 | 71.4 9.9 | 1534 | 49.7 3.5 | 0646 | 49.6 6.6 | 100 0 | 36 55 | 1.4 | 7.9 6.0 | 1421 | NNW | 343 | 0.01 | 0.45 | 0.125 0.061 | 521 193 | 50 10 |
| Mount George (Napa East) | 9/4/26 | 75.1 0.9 | 1437 | 47.9 3.6 | 0055 | 51.6 6.2 | 98 1 | 40 36 | 1.5 | 14.1 2.8 | 1420 | W | 272 | 0.01 | 0.16 | 0.158 0.120 | 545 432 | 20 10 |
| Napa-East (Palmaz 300') | 9/4/26 | 80.0 12.7 | 1440 | 51.2 2.3 | 0016 | 52.7 5.6 | 100 0 | 35 39 | 2.1 | 14.7 2.4 | 1715 | SW | 226 | 0.01 | 0.16 | 0.151 0.122 | 481 394 | 100 10 |
| 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') | 9/4/26 | 71.6 11.6 | 1429 | 50.4 3.1 | 2204 | 52.2 4.6 | 100 0 | 46 53 | 2.4 | 13.7 1.8 | 1508 | SW | 228 | 0.00 | 0.33 | 0.145 0.126 | 532 450 | 30 10 |
| Wooden Valley | 9/4/26 | 75.2 7.6 | 1601 | 44.4 11.9 | 0641 | 48.6 7.2 | 97 4 | 34 34 | 2.8 | 16.8 0.3 | 1602 | SSW | 198 | 0.00 | 0.04 | 0.168 0.109 | 561 359 | 10 10 |
| Napa-West Upper (Truchard) | 9/4/26 | 78.9 10.5 | 1608 | 51.0 3.8 | 0457 | 9.5 8.2 | 100 0 | 0 0 | 2.7 | 17.4 0.2 | 1732 | SW | 222 | 0.01 | 0.10 | 0.173 0.112 | 536 402 | 100 20 |
| Napa-West Lower (Truchard) | 9/4/26 | 79.3 10.8 | 1355 | 45.4 3.6 | 0058 | 49.9 6.8 | 98 5 | 31 41 | - | - | - | - | - | - | - | - | 100 10 |
| Napa-South (Toyon Farms) | 9/4/26 | 77.1 9.3 | 1407 | 52.6 2.5 | 0512 | 54.7 4.9 | 100 0 | 42 38 | 3.1 | 18.5 1.2 | 1611 | S | 184 | 0.00 | 0.07 | 0.092 0.069 | 260 180 | 80 20 |
| Toyon Remote 1 | 9/4/26 | 79.4 10.7 | 1358 | 48.1 2.4 | 0034 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 9/4/26 | 76.5 8.2 | 1628 | 47.1 3.8 | 0037 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 9/4/26 | 80.2 11.0 | 1630 | 47.7 2.6 | 0059 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 9/4/26 | 77.9 8.4 | 1547 | 48.7 2.9 | 0601 | 51.4 6.3 | 97 2 | 32 37 | 2.3 | 15.6 3.1 | 1454 | SSE | 159 | 0.00 | 0.08 | 0.155 0.108 | 511 365 | 100 20 |
| Carneros (Saintsbury) | 9/4/26 | 76.3 10.1 | 1356 | 45.0 5.5 | 0556 | 49.8 5.8 | 100 0 | 34 39 | 4.4 | 21.4 2.7 | 1807 | WSW | 253 | 0.01 | 0.08 | - | - | 40 10 |
| Suscol Lower (Ranch 35) | 9/4/26 | 76.3 7.8 | 1500 | 51.4 2.5 | 0034 | 53.0 5.2 | 100 0 | 39 31 | 4.4 | 19.1 0.7 | 1604 | SSW | 193 | 0.01 | 0.15 | 0.162 0.110 | 512 385 | 60 20 |
| Suscol Mtn (Ranch 93) | 9/4/26 | 75.6 13.0 | 1459 | 51.3 4.0 | 0648 | 52.5 4.7 | 100 0 | 42 42 | 5.4 | 24.1 1.2 | 1750 | NW | 320 | 0.01 | 0.33 | - | - | 30 10 |
| Suscol Upper (Ranch 92) | 9/4/26 | 73.7 10.4 | 1515 | 52.4 3.4 | 0630 | 23.4 40.4 | 100 0 | 0 0 | 3.8 | 19.4 2.4 | 1653 | SW | 230 | 0.00 | 0.15 | - | - | 0 10 |
| Stanly (Ranch 45) | 9/4/26 | 75.1 7.6 | 1657 | 50.0 4.4 | 0431 | 51.6 4.8 | 97 2 | 40 33 | 4.3 | 18.2 2.1 | 1556 | SSW | 198 | 0.01 | 0.15 | 0.154 0.094 | 485 311 | 100 20 |
| Carneros Upper (Ranch 81) | 9/4/26 | 76.6 9.3 | 1532 | 53.4 3.7 | 0728 | 11.8 31.7 | - | - | 7.9 | 29.0 5.7 | 1530 | S | 187 | - | - | - | - | 20 10 |
| Carneros (Mitsuko) | 9/4/26 | 77.1 9.4 | 1612 | 47.2 4.6 | 0101 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Carneros Lower (Ranch 81) | 9/4/26 | 80.1 11.6 | 1554 | 52.4 1.3 | 0221 | 6.8 24.3 | 100 0 | 0 0 | 1.1 | 13.3 0.9 | 1747 | NW | 316 | 0.01 | 0.01 | 0.021 0.014 | 0 2 | 50 10 |
| Carneros (Milton Rd) | 9/4/26 | 76.0 8.5 | 1648 | 50.8 1.3 | 0059 | 53.2 4.8 | 94 1 | 38 33 | - | - | - | - | 0.00 | 0.00 | - | - | 100 20 |
| Max | 80.2 | - | 53.4 | - | 54.7 | 100 | 46 | 7.9 | 29.0 | - | - | 0.01 | 0.45 | 0.173 | 561 | - | |
| Avg | - | - | - | - | 42.5 | - | - | 3.3 | - | - | - | - | - | - | - | - | |
| Min | 71.4 | - | 44.4 | - | 6.8 | 94 | 0 | 1.1 | 7.9 | - | - | 0.00 | 0.00 | 0.021 | 0 | - |