| 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 | 9/30/26 | 91.3 1.8 | 1524 | 58.6 2.8 | 2347 | - | - | - | - | - | - | - | 0.00 | 0.82 | - | - | 80 10 |
| Pope Valley (Weeks Lake) | 9/30/26 | 97.3 0.3 | 1517 | 44.5 2.3 | 0623 | 43.1 3.7 | 90 4 | 13 4 | 1.4 0.5 | 11.4 9.6 | 1602 | WSW | 254 | 0.00 | 0.03 | 0.151 0.008 | 423 0 | 70 10 |
| Dollarhide Base | 9/30/26 | 100.3 2.2 | 1415 | 52.7 6.0 | 0727 | 47.6 3.5 | 85 8 | 16 3 | 2.3 0.6 | 14.2 6.4 | 1737 | SW | 232 | 0.00 | 0.00 | 0.178 0.010 | 440 0 | 30 10 |
| Dollarhide 1AS Remote | 9/30/26 | 100.6 3.0 | 1505 | 43.2 2.4 | 0652 | 44.6 3.1 | 84 6 | 17 4 | 1.7 0.1 | 14.2 0.7 | 1626 | SW | 221 | - | - | - | - | 30 10 |
| Dollarhide 16A Remote | 9/30/26 | 99.9 0.3 | 1428 | 50.5 4.5 | 0716 | 47.6 3.6 | 89 5 | 17 4 | - | - | - | - | - | - | - | - | 60 10 |
| Dollarhide 18A Remote | 9/30/26 | 100.9 1.4 | 1447 | 41.5 2.7 | 0652 | 44.6 3.1 | 88 7 | 16 4 | - | - | - | - | - | - | - | - | 80 10 |
| Hardin Rd (Eakle) | 9/30/26 | 97.4 0.3 | 1435 | 46.6 3.5 | 0717 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| Angwin | 9/30/26 | 88.9 0.3 | 1457 | 69.2 0.3 | 0701 | 36.7 4.3 | 29 3 | 16 6 | 4.3 1.8 | 16.7 1.6 | 0210 | NNW | 333 | 0.00 | 0.30 | 0.100 0.039 | 0 0 | 100 0 |
| Lower Angwin (Pioneer) | 9/30/26 | 91.9 0.7 | 1256 | 48.5 7.6 | 0035 | - | - | - | 2.3 0.3 | 12.4 1.5 | 1012 | NE | 36 | - | - | - | - | 100 10 |
| Las Posadas (Cal Fire) | 9/30/26 | 93.5 0.6 | 1438 | 61.5 0.1 | 0056 | 42.3 4.3 | 48 2 | 16 6 | 5.7 0.5 | 16.2 8.8 | 1639 | S | 184 | 0.00 | 0.23 | 0.218 0.018 | 420 4 | - |
| Deer Park | 9/30/26 | 96.9 1.3 | 1555 | 59.2 3.6 | 0648 | 46.4 6.8 | 67 14 | 16 7 | 2.3 1.5 | 12.2 9.0 | 1604 | SSE | 160 | 0.00 | 0.04 | 0.141 0.044 | 324 2 | 60 10 |
| Lower Chiles Valley (Brown) | 9/30/26 | 96.4 0.2 | 1352 | 47.6 1.9 | 0101 | 42.6 4.3 | 82 8 | 13 4 | 1.8 0.9 | 12.5 1.7 | 1433 | NW | 316 | 0.00 | 0.14 | 0.177 0.018 | 477 3 | 60 10 |
| Moss Creek Vineyard/Reservior | 9/30/26 | 98.9 5.2 | 1519 | 53.6 4.3 | 0624 | 45.0 3.8 | 75 15 | 12 3 | - | - | - | - | 0.00 | 0.04 | - | - | 40 10 |
| Max | 100.9 | - | 69.2 | - | 47.6 | 90 | 17 | 5.7 | 16.7 | - | - | 0.00 | 0.82 | 0.218 | 477 | - | |
| Avg | - | - | - | - | 44.0 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 88.9 | - | 41.5 | - | 36.7 | 29 | 12 | 1.4 | 11.4 | - | - | 0.00 | 0.00 | 0.100 | 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 | 9/30/26 | 99.7 1.0 | 1255 | 49.4 2.0 | 0712 | 48.4 2.5 | 83 8 | 20 7 | - | - | - | - | 0.00 | 0.09 | - | - | 80 10 |
| Diamond Mtn (Schramsberg) | 9/30/26 | 95.1 2.1 | 1525 | 61.4 4.6 | 0617 | 44.0 6.8 | 54 17 | 16 6 | - | - | - | - | 0.00 | 0.13 | - | - | 80 10 |
| Diamond Mtn (McEachran) | 9/30/26 | 96.2 0.0 | 1418 | 57.6 3.5 | 0732 | 45.1 4.9 | 67 8 | 15 5 | - | - | - | - | - | - | - | - | 80 10 |
| St. Helena-North | 9/30/26 | 99.3 1.3 | 1517 | 49.9 1.8 | 0654 | 44.0 3.7 | 79 6 | 12 6 | 2.0 | 12.9 1.1 | 1527 | SE | 129 | 0.00 | 0.11 | 0.147 0.002 | 397 4 | 20 10 |
| St. Helena (NVV Office) | 9/30/26 | 98.3 2.8 | 1623 | 49.8 2.5 | 0639 | - | - | - | 1.0 | 7.9 1.4 | 1738 | WNW | 298 | 0.00 | 0.04 | - | - | 30 10 |
| Tiara Fria (East St. Helena) | 9/30/26 | 95.3 3.8 | 1707 | 47.2 2.4 | 0649 | 48.1 3.7 | 88 3 | 16 7 | 1.6 | 9.4 3.4 | 1421 | SE | 133 | 0.00 | 0.02 | - | - | 10 10 |
| Prisoner Winery | 9/30/26 | 98.1 3.0 | 1537 | 47.8 2.4 | 0655 | 49.4 4.3 | 93 1 | 18 10 | 1.0 | 8.2 6.0 | 1356 | E | 87 | 0.00 | 0.06 | 0.027 0.014 | 0 0 | 10 10 |
| Rutherford Hill Estate | 9/30/26 | 96.8 6.4 | 1536 | 56.0 4.4 | 0718 | 51.0 4.2 | 84 3 | 19 11 | 1.3 | 9.6 4.6 | 1605 | S | 178 | 0.00 | 0.08 | 0.136 0.003 | 392 2 | 30 10 |
| Rutherford-North (Mee Ln) | 9/30/26 | 95.9 5.7 | 1531 | 45.2 2.4 | 0707 | 48.2 3.5 | 91 3 | 20 12 | 2.2 | 14.2 6.4 | 1538 | SE | 135 | 0.00 | 0.06 | 0.157 0.001 | 407 5 | 60 10 |
| Rutherford (STS) | 9/30/26 | 97.9 4.2 | 1529 | 44.8 2.3 | 0721 | 51.7 3.4 | 93 0 | 24 12 | 1.5 | 11.3 4.0 | 1535 | E | 88 | 0.00 | 0.05 | 0.164 0.004 | 472 5 | 60 10 |
| Oakville-NE (Ranch 88) | 9/30/26 | 95.8 4.4 | 1526 | 43.7 2.1 | 0642 | 45.8 3.2 | 85 3 | 18 11 | 1.6 | 12.4 3.1 | 1352 | SSE | 160 | 0.00 | 0.04 | 0.151 0.003 | 409 2 | 80 10 |
| OV561-East | 9/30/26 | 97.4 2.8 | 1558 | 46.6 3.1 | 0634 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Oakville | 9/30/26 | 93.3 5.6 | 1601 | 45.1 2.5 | 0631 | 48.4 3.4 | 89 2 | 21 13 | 2.8 | 14.2 0.4 | 1407 | SE | 144 | 0.00 | 0.03 | 0.172 0.003 | 449 4 | 70 10 |
| OV518-West | 9/30/26 | 93.8 2.7 | 1538 | 46.2 3.5 | 0623 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| To Kalon Remote (TKKE) | 9/30/26 | 96.2 5.3 | 1547 | 46.5 1.5 | 0640 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| To Kalon | 9/30/26 | 95.0 4.6 | 1555 | 47.0 2.6 | 0709 | 50.3 4.0 | 93 3 | 22 13 | 2.5 | 13.6 0.4 | 1351 | SE | 131 | 0.00 | 0.00 | 0.169 0.003 | 452 4 | 70 10 |
| To Kalon Remote (TKN5) | 9/30/26 | 96.7 3.0 | 1503 | 46.6 2.0 | 0654 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| Yountville (Ranch 67) | 9/30/26 | 93.4 0.4 | 1548 | 44.6 2.5 | 0637 | 47.6 1.2 | 89 2 | 20 3 | 2.3 | 12.1 1.4 | 1933 | SSW | 198 | 0.00 | 0.05 | 0.169 0.000 | 498 12 | 70 10 |
| Stags Leap Dist (Silverado Vineyards) | 9/30/26 | 94.1 0.4 | 1545 | 44.8 2.5 | 0648 | 48.2 1.7 | 93 2 | 20 6 | 2.1 | 14.4 1.5 | 1705 | SE | 136 | 0.00 | 0.07 | 0.170 0.002 | 443 2 | 80 10 |
| Borreo (Soda Canyon) | 9/30/26 | 91.5 0.9 | 1633 | 49.2 4.1 | 0720 | 47.1 1.0 | 91 7 | 20 1 | 1.6 | 8.8 1.4 | 1527 | S | 170 | 0.00 | 0.31 | 0.147 0.003 | 441 3 | 30 10 |
| Wappo Hill Floor | 9/30/26 | 94.3 2.7 | 1519 | 44.7 3.6 | 0639 | 49.1 1.7 | 92 8 | 21 3 | 2.1 | 11.8 0.2 | 1455 | SE | 145 | 0.00 | 0.10 | 0.163 0.005 | 449 0 | 80 10 |
| Stags Leap Dist (Chimney Rock) | 9/30/26 | 93.5 2.9 | 1536 | 44.3 2.9 | 0700 | 51.7 1.7 | 98 1 | 28 1 | 1.9 | 10.6 2.3 | 1716 | SE | 140 | 0.00 | 0.10 | 0.145 0.002 | 416 1 | 80 10 |
| Yountville-South (Ranch 87) | 9/30/26 | 94.9 1.9 | 1537 | 45.4 3.2 | 0702 | 50.4 1.1 | 100 0 | 21 4 | 1.2 | 11.8 1.6 | 1520 | S | 177 | 0.00 | 0.09 | 0.133 0.004 | 366 2 | 80 10 |
| Yountville-SE (Ranch 85) | 9/30/26 | 92.6 2.9 | 1541 | 46.0 3.5 | 0703 | 50.6 1.6 | 92 2 | 23 4 | 1.8 | 11.0 0.7 | 1632 | SSE | 148 | 0.00 | 0.08 | - | 0 0 | 80 10 |
| Oak Knoll-East (Ranch 53) | 9/30/26 | 93.4 3.0 | 1548 | 46.4 3.3 | 0637 | 50.0 1.9 | 90 2 | 20 6 | 1.6 | 11.5 0.9 | 1602 | SE | 132 | 0.00 | 0.15 | 0.160 0.003 | 473 4 | 80 10 |
| Napa-NW (Ranch 54) | 9/30/26 | 94.1 1.7 | 1548 | 47.5 3.7 | 0641 | 49.5 0.2 | 89 4 | 21 3 | 0.5 | 6.3 0.3 | 1548 | ESE | 108 | 0.00 | 0.18 | - | 0 0 | 80 10 |
| Napa-North (Ranch 29) | 9/30/26 | 92.7 3.4 | 1558 | 47.0 3.6 | 0634 | 51.6 1.7 | 100 0 | 23 0 | 1.5 | 11.5 1.0 | 1338 | WSW | 240 | 0.00 | 0.10 | 0.106 0.002 | 277 1 | 50 10 |
| Max | 99.7 | - | 61.4 | - | 51.7 | 100 | 28 | 2.8 | 14.4 | - | - | 0.00 | 0.31 | 0.172 | 498 | - | |
| Avg | - | - | - | - | 48.6 | - | - | 1.7 | - | - | - | - | - | - | - | - | |
| Min | 91.5 | - | 43.7 | - | 44.0 | 54 | 12 | 0.5 | 6.3 | - | - | 0.00 | 0.00 | 0.027 | 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 | 9/30/26 | 91.4 0.1 | 1314 | 69.6 0.2 | 0214 | 39.9 3.0 | 40 8 | 15 5 | 1.6 | 10.9 1.6 | 1457 | S | 176 | 0.00 | 0.45 | 0.215 0.039 | 732 143 | 100 20 |
| Mount George (Napa East) | 9/30/26 | 103.6 6.3 | 1608 | 46.8 1.4 | 0658 | 51.9 1.8 | 94 3 | 24 3 | 1.1 | 7.2 1.4 | 1416 | W | 263 | 0.00 | 0.16 | 0.149 0.001 | 459 4 | 80 10 |
| Napa-East (Palmaz 300') | 9/30/26 | 97.3 2.0 | 1637 | 49.9 2.5 | 0700 | 50.9 1.6 | 100 0 | 17 0 | 1.5 | 8.4 0.4 | 1515 | SW | 231 | 0.00 | 0.16 | 0.138 0.001 | 406 3 | 70 10 |
| Napa-East (Palmaz 1200') | 9/14/26 | 80.8 4.1 | 1344 | 47.1 4.1 | 0557 | 46.5 1.6 | 92 8 | 29 22 | 2.4 | 12.0 0.9 | 1614 | SW | 226 | - | - | 0.153 0.004 | 498 20 | 20 20 |
| Napa-East (Palmaz 1400') | 9/30/26 | 89.0 3.0 | 1105 | 56.2 4.3 | 0716 | 46.1 5.4 | 67 9 | 18 7 | 2.2 | 11.8 6.7 | 1109 | N | 352 | 0.00 | 0.33 | 0.160 0.020 | 454 2 | 50 10 |
| Wooden Valley | 9/30/26 | 93.9 1.9 | 1421 | 47.2 5.4 | 0543 | 43.6 4.9 | 79 8 | 17 9 | 1.8 | 11.7 5.5 | 1444 | WNW | 291 | 0.00 | 0.04 | 0.159 0.019 | 457 3 | 80 10 |
| Napa-West Upper (Truchard) | 9/30/26 | 94.9 2.4 | 1522 | 55.2 4.8 | 0710 | 50.6 2.9 | 100 0 | 0 0 | 1.8 | 11.7 1.1 | 1220 | SSE | 168 | 0.00 | 0.10 | 0.506 0.105 | - | 70 10 |
| Napa-West Lower (Truchard) | 9/30/26 | 94.3 2.8 | 1509 | 45.4 4.0 | 0708 | 49.2 1.2 | 97 0 | 18 3 | - | - | - | - | - | - | - | - | 70 10 |
| Napa-South (Toyon Farms) | 9/30/26 | 92.8 3.1 | 1524 | 52.8 3.6 | 0713 | 56.5 1.3 | 99 1 | 27 6 | 1.7 | 10.0 1.8 | 1420 | S | 191 | 0.00 | 0.07 | 0.091 0.004 | 214 3 | 30 10 |
| Toyon Remote 1 | 9/30/26 | 92.4 4.4 | 1522 | 48.1 4.7 | 0625 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 9/30/26 | 91.4 3.2 | 1525 | 48.2 3.9 | 0638 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 9/30/26 | 92.5 4.4 | 1520 | 47.3 4.1 | 0718 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 9/30/26 | 93.2 1.0 | 1515 | 50.7 5.5 | 0055 | 52.0 2.1 | 93 2 | 20 6 | 2.3 | 10.4 1.4 | 1527 | SSE | 147 | 0.00 | 0.08 | 0.152 0.002 | 451 1 | 80 10 |
| Carneros (Saintsbury) | 9/30/26 | 89.8 2.5 | 1518 | 47.4 3.9 | 0719 | 52.3 1.1 | 100 0 | 25 1 | 2.7 | 11.2 3.1 | 1658 | S | 172 | 0.00 | 0.08 | - | - | 30 10 |
| Suscol Lower (Ranch 35) | 9/30/26 | 90.6 1.6 | 1620 | 49.6 2.9 | 0722 | 52.0 2.5 | 100 0 | 24 1 | 3.6 | 11.8 0.7 | 2107 | S | 175 | 0.00 | 0.15 | 0.157 0.002 | 435 2 | 0 10 |
| Suscol Mtn (Ranch 93) | 9/30/26 | 92.3 0.5 | 1606 | 54.8 1.3 | 0059 | 50.7 0.8 | 96 0 | 22 1 | 2.5 | 12.1 7.0 | 1432 | NW | 310 | 0.00 | 0.40 | - | - | 0 0 |
| Suscol Upper (Ranch 92) | 9/30/26 | 91.5 1.3 | 1631 | 55.3 1.8 | 0036 | 49.7 9.1 | 100 0 | 0 0 | 1.0 | 9.4 0.7 | 1422 | S | 190 | 0.00 | 0.15 | - | - | 0 0 |
| Stanly (Ranch 45) | 9/30/26 | 88.6 3.9 | 1448 | 51.4 7.3 | 0715 | 55.7 4.8 | 91 5 | 28 5 | 5.2 | 11.8 0.2 | 1648 | WSW | 238 | 0.00 | 0.15 | 0.123 0.042 | 448 33 | 40 10 |
| Carneros Upper (Ranch 81) | 9/30/26 | 92.2 0.4 | 1521 | 55.4 2.7 | 0101 | 51.7 0.5 | - | - | 4.3 | 16.8 7.7 | 1823 | SW | 233 | - | - | - | - | 0 10 |
| Carneros (Mitsuko) | 9/30/26 | 90.5 2.6 | 1454 | 44.8 3.7 | 0611 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| Carneros Lower (Ranch 81) | 9/30/26 | 92.6 3.5 | 1448 | 50.1 4.8 | 0607 | 44.6 3.1 | 100 0 | 0 0 | 1.3 | 10.4 2.5 | 1613 | S | 173 | 0.00 | 0.01 | 0.031 0.005 | 0 3 | 30 10 |
| Carneros (Milton Rd) | 9/30/26 | 88.6 3.0 | 1506 | 49.0 5.3 | 0605 | 52.4 2.0 | 93 0 | 28 3 | - | - | - | - | 0.00 | 0.00 | - | - | 30 10 |
| Max | 103.6 | - | 69.6 | - | 56.5 | 100 | 28 | 5.2 | 16.8 | - | - | 0.00 | 0.45 | 0.506 | 732 | - | |
| Avg | - | - | - | - | 50.0 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 88.6 | - | 44.8 | - | 39.9 | 40 | 0 | 1.0 | 7.2 | - | - | 0.00 | 0.00 | 0.031 | 0 | - |