| 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 | 5/20/26 | 82.3 0.1 | 1459 | 50.0 2.6 | 0520 | - | - | - | - | - | - | - | 0.00 | 50.09 | - | - | 100 0 |
| Pope Valley (Weeks Lake) | 5/20/26 | 89.6 2.3 | 1401 | 41.1 4.1 | 0600 | 43.6 8.3 | 100 4 | 14 5 | 1.6 0.5 | 12.9 2.4 | 1511 | SSW | 206 | 0.00 | 26.24 | 0.215 0.010 | 617 23 | 80 10 |
| Dollarhide Base | 5/20/26 | 91.4 2.4 | 1339 | 49.4 5.0 | 0531 | 46.0 7.5 | 85 5 | 20 8 | 2.5 0.8 | 15.9 7.2 | 1806 | WSW | 241 | 0.00 | 23.14 | 0.254 0.014 | 705 29 | 80 10 |
| Dollarhide 1AS Remote | 5/20/26 | 92.0 1.5 | 1415 | 42.7 6.1 | 0553 | 46.3 7.1 | 93 1 | 19 7 | 1.5 0.4 | 18.0 4.2 | 1426 | SSW | 200 | - | - | - | - | 80 10 |
| Dollarhide 16A Remote | 5/20/26 | 91.7 1.6 | 1635 | 47.7 5.8 | 0600 | 45.9 6.4 | 90 5 | 19 6 | - | - | - | - | - | - | - | - | 80 10 |
| Dollarhide 18A Remote | 5/20/26 | 91.5 0.6 | 1323 | 40.0 5.7 | 0607 | 44.1 6.4 | 95 1 | 19 7 | - | - | - | - | - | - | - | - | 80 10 |
| Hardin Rd (Eakle) | 5/20/26 | 92.8 3.3 | 1421 | 45.1 5.3 | 0614 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| Angwin | 5/20/26 | 81.5 0.5 | 1405 | 62.9 3.2 | 0545 | 34.8 10.4 | 35 8 | 16 7 | 3.9 1.4 | 14.1 3.8 | 1335 | SSE | 163 | 0.00 | 45.12 | 0.085 0.030 | 0 0 | 100 0 |
| Lower Angwin (Pioneer) | 5/20/26 | 83.1 0.6 | 1538 | 45.5 2.5 | 0452 | - | - | - | 2.2 0.6 | 12.4 1.0 | 1622 | SW | 236 | - | - | - | - | 100 0 |
| Las Posadas (Cal Fire) | 5/20/26 | 86.2 1.0 | 1435 | 56.4 0.7 | 0257 | 39.7 10.8 | 52 7 | 18 8 | 5.5 1.8 | 18.8 6.6 | 1823 | SW | 229 | 0.00 | 34.50 | 0.264 0.038 | 614 16 | - |
| Deer Park | 5/20/26 | 88.7 0.4 | 1543 | 58.3 1.7 | 0708 | 40.7 12.7 | 60 28 | 15 7 | 2.7 2.8 | 14.0 5.5 | 1506 | SW | 223 | 0.00 | 28.72 | 0.200 0.062 | 479 14 | 90 10 |
| Lower Chiles Valley (Brown) | 5/20/26 | 87.9 1.3 | 1613 | 41.5 4.4 | 0534 | 42.2 8.2 | 93 5 | 15 6 | 2.0 0.6 | 15.4 1.0 | 1815 | WNW | 299 | 0.00 | 25.89 | 0.234 0.012 | 674 29 | 90 10 |
| Moss Creek Vineyard/Reservior | 5/20/26 | 91.7 4.6 | 1616 | 47.5 5.8 | 0602 | 43.5 9.7 | 86 4 | 16 9 | - | - | - | - | 0.00 | 27.05 | - | - | 50 10 |
| Max | 92.8 | - | 62.9 | - | 46.3 | 100 | 20 | 5.5 | 18.8 | - | - | 0.00 | 50.09 | 0.264 | 705 | - | |
| Avg | - | - | - | - | 42.7 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 81.5 | - | 40.0 | - | 34.8 | 35 | 14 | 1.5 | 12.4 | - | - | 0.00 | 23.14 | 0.085 | 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 | 5/20/26 | 93.1 | 1508 | 45.5 | 0412 | 47.9 | 83 | 12 | - | - | - | - | 0.00 | 32.79 | - | - | 70 |
| Diamond Mtn (Schramsberg) | 5/20/26 | 87.8 0.3 | 1428 | 60.7 3.5 | 0653 | 39.1 12.2 | 59 30 | 15 5 | - | - | - | - | 0.00 | 31.20 | - | - | 90 10 |
| Diamond Mtn (McEachran) | 5/20/26 | 88.7 0.7 | 1352 | 56.1 1.9 | 0626 | 41.1 12.2 | 63 23 | 13 6 | - | - | - | - | - | - | - | - | 80 10 |
| St. Helena-North | 5/20/26 | 91.6 1.0 | 1453 | 49.4 2.0 | 0552 | 39.6 10.3 | 69 4 | 12 6 | 2.5 | 13.8 2.2 | 1449 | SSE | 153 | 0.00 | 31.03 | 0.216 0.011 | 574 14 | 80 10 |
| St. Helena (NVV Office) | 5/20/26 | 93.4 0.4 | 1528 | 49.8 1.9 | 0548 | - | - | - | 1.3 | 10.8 2.6 | 1714 | W | 269 | 0.00 | 28.47 | - | - | 80 10 |
| Tiara Fria (East St. Helena) | 5/20/26 | 90.9 0.5 | 1537 | 48.7 3.3 | 0551 | 44.0 10.1 | 83 7 | 12 5 | 2.1 | 13.6 3.8 | 1859 | NW | 317 | 0.00 | 26.44 | - | - | 80 10 |
| Rutherford Hill Estate | 5/20/26 | 91.2 0.6 | 1610 | 53.9 4.3 | 0553 | 43.0 12.0 | 80 42 | 15 6 | 1.6 | 12.7 2.4 | 1509 | S | 191 | 0.00 | 25.00 | 0.203 0.013 | 590 16 | 80 10 |
| Rutherford-North (Mee Ln) | 5/20/26 | 91.7 0.9 | 1533 | 45.1 0.0 | 0556 | 45.7 7.5 | 90 6 | 15 6 | 2.5 | 22.4 6.1 | 1518 | SW | 233 | 0.00 | 24.52 | 0.222 0.006 | 600 20 | 80 10 |
| Rutherford (STS) | 5/20/26 | 91.9 1.4 | 1447 | 45.6 1.1 | 0531 | 48.2 8.6 | 90 13 | 19 6 | 2.0 | 21.1 5.6 | 1508 | SSW | 210 | 0.00 | 25.82 | 0.244 0.018 | 697 25 | 80 10 |
| Oakville-NE (Ranch 88) | 5/20/26 | 91.8 0.3 | 1537 | 45.1 2.1 | 0538 | 44.3 10.8 | 85 6 | 13 7 | 1.8 | 12.4 4.3 | 1701 | WNW | 300 | 0.00 | 24.92 | 0.207 0.025 | 578 43 | 100 10 |
| OV561-East | 5/20/26 | 93.7 0.4 | 1541 | 46.7 0.1 | 0554 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Oakville | 5/20/26 | 89.9 0.2 | 1533 | 45.8 3.2 | 0556 | 45.8 10.2 | 92 5 | 13 6 | 2.8 | 12.6 3.1 | 1328 | ESE | 117 | 0.00 | 25.51 | 0.240 0.026 | 678 28 | 80 10 |
| OV518-West | 5/20/26 | 89.1 0.1 | 1459 | 46.8 0.3 | 0609 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| To Kalon Remote (TKKE) | 5/20/26 | 91.6 2.4 | 1511 | 45.5 0.6 | 0513 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| To Kalon | 5/20/26 | 91.1 0.2 | 1528 | 45.9 0.6 | 0519 | 45.5 11.0 | 88 13 | 17 8 | 2.5 | 14.2 4.0 | 1709 | WNW | 292 | 0.00 | 27.70 | 0.227 0.023 | 623 24 | 80 10 |
| To Kalon Remote (TKN5) | 5/20/26 | 92.4 1.0 | 1530 | 45.9 2.6 | 0526 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| Yountville (Ranch 67) | 5/20/26 | 89.6 0.3 | 1653 | 45.5 0.7 | 0557 | 45.2 13.2 | 87 10 | 14 7 | 2.3 | 12.8 4.8 | 1400 | SSE | 168 | 0.00 | 23.62 | 0.235 0.033 | 710 18 | 80 10 |
| Stags Leap Dist (Silverado Vineyards) | 5/20/26 | 90.2 0.8 | 1707 | 44.5 2.8 | 0548 | 46.1 12.9 | 91 11 | 16 9 | 1.8 | 12.6 4.6 | 1321 | SSW | 193 | 0.00 | 27.62 | 0.222 0.017 | 664 32 | 90 10 |
| Borreo (Soda Canyon) | 5/20/26 | 87.3 0.8 | 1540 | 46.4 5.8 | 0550 | 45.4 17.8 | 88 27 | 17 10 | 1.9 | 12.1 2.6 | 1532 | SSE | 167 | 0.00 | 27.52 | 0.226 0.049 | 697 30 | 90 10 |
| Wappo Hill Floor | 5/20/26 | 90.9 1.6 | 1544 | 44.5 6.2 | 0546 | 47.3 14.6 | 91 13 | 17 10 | 2.1 | 12.2 5.8 | 1730 | ESE | 110 | 0.00 | 26.75 | 0.232 0.055 | 677 31 | 80 10 |
| Stags Leap Dist (Chimney Rock) | 5/20/26 | 89.3 0.0 | 1606 | 43.7 3.5 | 0540 | 50.1 10.4 | 98 12 | 22 8 | 2.3 | 14.2 4.3 | 1719 | SE | 139 | 0.00 | 26.14 | 0.211 0.039 | 603 28 | 80 10 |
| Yountville-South (Ranch 87) | 5/20/26 | 90.2 1.0 | 1552 | 46.8 4.8 | 0555 | 48.4 13.7 | 91 11 | 18 9 | 1.7 | 12.1 0.9 | 1651 | SW | 217 | 0.00 | 27.39 | 0.230 0.022 | 680 38 | 70 10 |
| Yountville-SE (Ranch 85) | 5/20/26 | 90.6 0.2 | 1544 | 47.0 5.2 | 0607 | 48.5 13.9 | 90 12 | 17 9 | 1.8 | 11.0 5.9 | 1730 | SE | 143 | 0.00 | 25.69 | - | 0 0 | 80 10 |
| Oak Knoll-East (Ranch 53) | 5/20/26 | 90.8 1.1 | 1543 | 47.6 2.5 | 0529 | 47.3 13.2 | 86 5 | 16 9 | 1.7 | 11.8 6.4 | 1652 | SSW | 203 | 0.00 | 24.30 | 0.229 0.032 | 695 28 | 80 10 |
| Napa-NW (Ranch 54) | 5/20/26 | 92.8 0.6 | 1603 | 48.4 3.3 | 0554 | 45.8 13.1 | 81 5 | 12 5 | 0.9 | 11.4 4.4 | 1534 | SSW | 196 | 0.00 | 26.77 | - | 0 0 | 80 10 |
| Napa-North (Ranch 29) | 5/20/26 | 88.8 3.2 | 1548 | 48.0 2.8 | 0536 | 48.4 12.3 | 89 7 | 20 12 | 1.8 | 12.9 0.9 | 1648 | SW | 216 | 0.00 | 25.18 | 0.155 0.013 | 405 11 | 80 10 |
| Max | 93.7 | - | 60.7 | - | 50.1 | 98 | 22 | 2.8 | 22.4 | - | - | 0.00 | 32.79 | 0.244 | 710 | - | |
| Avg | - | - | - | - | 45.6 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 87.3 | - | 43.7 | - | 39.1 | 59 | 12 | 0.9 | 10.8 | - | - | 0.00 | 23.62 | 0.155 | 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 | 5/20/26 | 82.5 0.8 | 1519 | 64.2 1.8 | 0145 | 35.7 9.3 | 44 14 | 16 5 | 2.0 | 12.8 0.1 | 1359 | SSE | 159 | 0.00 | 34.19 | 0.221 0.006 | 676 38 | 90 20 |
| Mount George (Napa East) | 5/20/26 | 86.5 2.2 | 1548 | 46.9 2.2 | 0543 | 46.3 11.3 | 89 15 | 20 12 | 1.2 | 10.2 5.7 | 1518 | WSW | 247 | 0.00 | 17.04 | 0.210 0.032 | 671 27 | 80 10 |
| Napa-East (Palmaz 300') | 5/20/26 | 90.2 1.4 | 1546 | 48.8 1.7 | 0600 | 47.3 13.3 | 92 27 | 18 10 | 1.8 | 10.1 5.2 | 1643 | SSW | 201 | 0.00 | 23.29 | 0.189 0.024 | 559 12 | 80 10 |
| Napa-East (Palmaz 1200') | 5/20/26 | 83.1 2.3 | 1549 | 49.6 2.8 | 0543 | 44.2 13.7 | 74 19 | 19 10 | 2.5 | 11.6 2.3 | 1413 | NNW | 333 | - | - | 0.212 0.024 | 676 30 | 100 10 |
| Napa-East (Palmaz 1400') | 5/20/26 | 82.5 0.9 | 1627 | 49.8 2.8 | 0612 | 44.5 13.9 | 77 19 | 20 8 | 2.5 | 12.2 4.5 | 1359 | WSW | 247 | 0.00 | 30.80 | 0.219 0.036 | 664 26 | 100 10 |
| Wooden Valley | 5/20/26 | 85.2 0.1 | 1618 | 44.5 4.6 | 0555 | 45.9 9.6 | 93 2 | 20 11 | 1.8 | 15.5 2.0 | 1655 | SW | 217 | 0.00 | 29.11 | 0.225 0.016 | 682 32 | 100 0 |
| Napa-West Upper (Truchard) | 5/20/26 | 88.0 3.3 | 1504 | 53.8 0.4 | 0549 | 49.7 17.8 | 99 37 | 21 13 | 2.8 | 14.3 3.1 | 1656 | S | 180 | 0.00 | 24.41 | 0.237 0.048 | 675 32 | 80 10 |
| Napa-West Lower (Truchard) | 5/20/26 | 89.4 5.1 | 1457 | 43.7 4.4 | 0526 | 48.1 12.0 | 100 6 | 20 11 | - | - | - | - | - | - | - | - | 70 10 |
| Napa-South (Toyon Farms) | 5/20/26 | 86.8 5.8 | 1503 | 52.0 1.3 | 0533 | 53.3 10.8 | 94 16 | 29 16 | 2.7 | 11.1 7.0 | 1701 | S | 174 | 0.00 | 18.34 | 0.134 0.018 | 351 4 | 70 10 |
| Toyon Remote 1 | 5/20/26 | 88.4 3.4 | 1449 | 43.4 5.7 | 0410 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 5/20/26 | 86.9 5.4 | 1506 | 45.2 4.2 | 0558 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 5/20/26 | 89.0 4.1 | 1512 | 47.1 5.2 | 0539 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 5/20/26 | 88.3 2.1 | 1456 | 49.2 5.2 | 0530 | 47.5 12.6 | 92 6 | 20 12 | 2.2 | 10.4 6.1 | 1427 | SSE | 151 | 0.00 | 23.58 | 0.225 0.039 | 693 30 | 70 10 |
| Carneros (Saintsbury) | 5/20/26 | 86.0 3.2 | 1446 | 48.5 2.5 | 0511 | 48.6 11.4 | 91 12 | 23 14 | 3.3 | 12.4 7.7 | 1558 | S | 180 | 0.00 | 8.68 | - | - | 100 10 |
| Suscol Lower (Ranch 35) | 5/20/26 | 85.8 4.8 | 1513 | 49.8 8.1 | 0549 | 48.4 11.8 | - | - | 4.0 | 14.4 4.8 | 1456 | SSE | 162 | 0.00 | 22.84 | 0.217 0.035 | 617 20 | 100 10 |
| Suscol Mtn (Ranch 93) | 5/20/26 | 88.8 1.1 | 1543 | 55.3 6.4 | 0053 | 46.2 20.5 | 90 36 | 19 11 | 2.6 | 14.2 10.2 | 1417 | WNW | 298 | 0.00 | 18.60 | - | - | 80 10 |
| Suscol Upper (Ranch 92) | 5/20/26 | 85.2 4.6 | 1459 | 55.0 5.2 | 0047 | 46.8 18.7 | 90 23 | 20 12 | 1.1 | 11.9 8.5 | 1434 | SSW | 213 | 0.00 | 22.35 | - | - | 100 10 |
| Stanly (Ranch 45) | 5/20/26 | 88.9 3.5 | 1507 | 46.9 4.9 | 0500 | 50.6 10.9 | 93 1 | 21 14 | 4.1 | 12.1 8.7 | 1533 | SSW | 206 | 0.00 | 22.49 | 0.247 0.042 | 725 36 | 70 10 |
| Carneros Upper (Ranch 81) | 5/20/26 | 87.4 1.9 | 1458 | 55.0 2.1 | 0542 | 46.4 13.4 | - | - | 4.0 | 15.2 10.5 | 1809 | WSW | 238 | - | - | - | - | 80 10 |
| Carneros (Mitsuko) | 5/20/26 | 87.2 3.8 | 1500 | 44.7 6.3 | 0527 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| Carneros Lower (Ranch 81) | 5/20/26 | 86.1 5.0 | 1507 | 47.7 4.6 | 0544 | 48.8 9.8 | 93 3 | 25 16 | 1.5 | 10.0 3.1 | 1347 | SSE | 161 | 0.00 | 19.42 | 0.193 0.018 | 590 19 | 100 10 |
| Carneros (Milton Rd) | 5/20/26 | 84.5 7.5 | 1440 | 45.3 5.1 | 0400 | 49.5 10.8 | 93 3 | 24 16 | - | - | - | - | 0.00 | 18.07 | - | - | 100 10 |
| Max | 90.2 | - | 64.2 | - | 53.3 | 100 | 29 | 4.1 | 15.5 | - | - | 0.00 | 34.19 | 0.247 | 725 | - | |
| Avg | - | - | - | - | 47.1 | - | - | 2.5 | - | - | - | - | - | - | - | - | |
| Min | 82.5 | - | 43.4 | - | 35.7 | 44 | 16 | 1.1 | 10.0 | - | - | 0.00 | 8.68 | 0.134 | 351 | - |