| 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 | 5/18/26 | 77.6 9.9 | 1640 | 46.6 5.5 | 0005 | - | - | - | - | - | - | - | 0.00 | 50.09 | - | - | 100 10 |
| Pope Valley (Weeks Lake) | 5/18/26 | 82.3 10.0 | 1642 | 44.6 1.6 | 0044 | 23.4 5.1 | 72 14 | 5 8 | 5.0 | 22.1 7.2 | 0546 | NNW | 337 | 0.00 | 26.24 | 0.260 0.019 | 653 14 | 100 10 |
| Dollarhide Base | 5/18/26 | 82.6 8.7 | 1615 | 53.7 3.9 | 0011 | 27.7 5.6 | 52 25 | 6 10 | 8.8 | 31.8 11.5 | 0323 | NNE | 19 | 0.00 | 23.14 | 0.330 0.043 | 746 15 | 100 0 |
| Dollarhide 1AS Remote | 5/18/26 | 83.6 9.0 | 1602 | 42.9 1.9 | 0043 | 29.2 4.1 | 88 6 | 6 9 | 6.8 | 25.9 9.4 | 0911 | NE | 35 | - | - | - | - | 100 0 |
| Dollarhide 18A Remote | 5/18/26 | 84.8 9.7 | 1710 | 40.4 1.4 | 0038 | 29.6 4.0 | 86 10 | 6 9 | - | - | - | - | - | - | - | - | 100 0 |
| Angwin | 5/18/26 | 74.9 10.8 | 1608 | 53.1 2.2 | 0547 | 17.3 7.5 | 30 26 | 4 11 | 10.1 | 29.6 8.7 | 0629 | N | 3 | 0.00 | 45.12 | 0.165 0.002 | 0 0 | 100 20 |
| Lower Angwin (Pioneer) | 5/18/26 | 77.8 10.6 | 1640 | 48.3 2.9 | 0101 | - | - | - | 5.0 | 24.9 7.8 | 0633 | N | 5 | - | - | - | - | 100 20 |
| Deer Park | 5/18/26 | 83.2 9.9 | 1539 | 58.6 10.0 | 0456 | 21.4 7.7 | 28 39 | 4 8 | 6.5 | 31.5 6.5 | 0848 | NNE | 17 | 0.00 | 28.72 | 0.264 0.042 | 507 11 | 100 0 |
| Lower Chiles Valley (Brown) | 5/18/26 | 80.6 9.1 | 1633 | 40.7 1.6 | 0059 | 26.8 3.8 | 82 9 | 7 5 | 6.9 | 33.0 3.0 | 0723 | NNE | 29 | 0.00 | 25.89 | 0.283 0.029 | 719 16 | 100 10 |
| Moss Creek Vineyard/Reservior | 5/18/26 | 81.9 10.5 | 1550 | 48.6 0.1 | 0053 | 26.8 5.5 | 74 17 | 7 4 | - | - | - | - | 0.00 | 27.05 | - | - | 40 20 |
| Max | 84.8 | - | 58.6 | - | 29.6 | 88 | 7 | 10.1 | 33.0 | - | - | 0.00 | 50.09 | 0.330 | 746 | - | |
| Avg | - | - | - | - | 25.3 | - | - | 7.0 | - | - | - | - | - | - | - | - | |
| Min | 74.9 | - | 40.4 | - | 17.3 | 28 | 4 | 5.0 | 22.1 | - | - | 0.00 | 23.14 | 0.165 | 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 | 5/18/26 | 88.5 11.5 | 1545 | 49.6 5.1 | 0059 | 28.8 5.5 | 65 21 | 6 9 | - | - | - | - | 0.00 | 32.79 | - | - | 80 10 |
| Diamond Mtn (Schramsberg) | 5/18/26 | 83.3 9.9 | 1620 | 59.9 14.5 | 0558 | 22.1 8.3 | 26 52 | 4 8 | - | - | - | - | 0.00 | 31.20 | - | - | 100 0 |
| Diamond Mtn (McEachran) | 5/18/26 | 84.9 11.1 | 1656 | 59.7 13.6 | 0041 | 21.7 6.9 | 35 47 | 3 8 | - | - | - | - | - | - | - | - | 100 0 |
| St. Helena-North | 5/18/26 | 88.0 9.4 | 1534 | 53.5 7.3 | 0059 | 19.4 6.8 | 46 29 | 1 6 | 2.2 | 18.6 4.6 | 0106 | NW | 315 | 0.00 | 31.03 | 0.209 0.009 | 601 17 | 100 0 |
| St. Helena (NVV Office) | 5/18/26 | 87.3 11.1 | 1542 | 55.1 5.3 | 0053 | - | - | - | 3.0 | 23.5 0.7 | 1000 | ENE | 57 | 0.00 | 28.47 | - | - | 100 0 |
| Tiara Fria (East St. Helena) | 5/18/26 | 86.2 10.3 | 1730 | 51.1 0.1 | 0056 | 22.2 7.2 | 61 3 | 3 7 | 4.5 | 25.1 12.4 | 0917 | NE | 56 | 0.00 | 26.44 | - | - | 100 0 |
| Rutherford Hill Estate | 5/18/26 | 87.1 9.2 | 1641 | 60.4 11.9 | 0059 | 22.7 8.4 | 29 44 | 4 6 | 2.8 | 25.2 2.8 | 1011 | N | 354 | 0.00 | 25.00 | 0.223 0.022 | 622 15 | 100 0 |
| Rutherford-North (Mee Ln) | 5/18/26 | 86.4 9.1 | 1645 | 46.9 1.7 | 0054 | 28.5 3.4 | 78 5 | 6 5 | 3.7 | 25.4 3.9 | 0932 | NE | 41 | 0.00 | 24.52 | 0.243 0.008 | 634 13 | 100 0 |
| Rutherford (STS) | 5/18/26 | 85.1 9.2 | 1624 | 49.1 3.7 | 2350 | 31.7 3.8 | 73 12 | 8 7 | 5.7 | 25.9 4.3 | 0931 | NNE | 13 | 0.00 | 25.82 | 0.293 0.028 | 737 16 | 100 0 |
| Oakville-NE (Ranch 88) | 5/18/26 | 86.0 10.0 | 1707 | 46.4 2.8 | 0036 | 21.8 6.5 | 71 15 | 3 6 | 5.7 | 24.6 8.4 | 0910 | NE | 34 | 0.00 | 24.92 | 0.283 0.021 | 647 19 | 100 0 |
| OV561-East | 5/18/26 | 89.8 10.4 | 1629 | 49.9 5.6 | 0034 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| Oakville | 5/18/26 | 85.3 9.8 | 1647 | 46.8 2.6 | 0024 | 24.8 5.5 | 80 8 | 3 6 | 6.6 | 26.7 8.6 | 1002 | N | 0 | 0.00 | 25.51 | 0.309 0.038 | 727 17 | 100 10 |
| OV518-West | 5/18/26 | 85.3 9.3 | 1713 | 50.0 4.9 | 0059 | - | - | - | - | - | - | - | - | - | - | - | 100 0 |
| To Kalon Remote (TKKE) | 5/18/26 | 88.1 10.6 | 1640 | 48.4 1.7 | 2343 | - | - | - | - | - | - | - | - | - | - | - | 100 0 |
| To Kalon | 5/18/26 | 86.7 10.9 | 1647 | 49.9 1.7 | 0025 | 24.7 6.5 | 61 16 | 4 6 | 6.1 | 23.0 4.1 | 1003 | NE | 35 | 0.00 | 27.70 | 0.297 0.033 | 663 16 | 100 0 |
| To Kalon Remote (TKN5) | 5/18/26 | 86.1 9.4 | 1655 | 49.2 0.7 | 0101 | - | - | - | - | - | - | - | - | - | - | - | 100 0 |
| Yountville (Ranch 67) | 5/18/26 | 84.2 9.3 | 1720 | 50.8 8.2 | 2235 | 22.6 7.0 | 62 27 | 4 5 | 7.6 | 33.9 4.0 | 0935 | NNW | 331 | 0.00 | 23.62 | 0.321 0.044 | 740 3 | 100 0 |
| Stags Leap Dist (Silverado Vineyards) | 5/18/26 | 83.8 9.2 | 1729 | 50.6 7.7 | 2359 | 23.1 7.4 | 61 30 | 4 5 | 6.0 | 29.5 0.7 | 0948 | NNE | 14 | 0.00 | 27.62 | 0.299 0.043 | 711 16 | 100 20 |
| Borreo (Soda Canyon) | 5/18/26 | 83.5 10.0 | 1723 | 61.0 20.6 | 0050 | 21.4 8.1 | 28 68 | 5 5 | 6.0 | 27.4 4.2 | 0905 | NNE | 28 | 0.00 | 27.52 | 0.297 0.044 | 742 17 | 100 0 |
| Wappo Hill Floor | 5/18/26 | 85.9 9.6 | 1643 | 56.5 14.0 | 0035 | 22.9 7.9 | 44 46 | 4 6 | 10.2 | 32.8 2.7 | 0847 | NNE | 31 | 0.00 | 26.75 | 0.355 0.061 | 724 33 | 100 0 |
| Stags Leap Dist (Chimney Rock) | 5/18/26 | 85.0 8.8 | 1720 | 51.5 9.5 | 2150 | 32.2 4.2 | 74 22 | 10 5 | 8.2 | 32.4 1.5 | 1006 | NNE | 18 | 0.00 | 26.14 | 0.301 0.051 | 645 17 | 100 0 |
| Yountville-South (Ranch 87) | 5/18/26 | 87.4 10.9 | 1712 | 57.5 12.7 | 2146 | 24.3 7.7 | 44 47 | 5 6 | 3.2 | 21.2 0.5 | 1015 | NW | 312 | 0.00 | 27.39 | 0.257 0.025 | 741 16 | 90 10 |
| Yountville-SE (Ranch 85) | 5/18/26 | 85.3 9.5 | 1742 | 53.8 9.2 | 0046 | 24.7 7.0 | 52 36 | 4 7 | 7.8 | 29.9 5.5 | 0905 | NE | 48 | 0.00 | 25.69 | - | 0 0 | 100 0 |
| Oak Knoll-East (Ranch 53) | 5/18/26 | 87.0 10.9 | 1654 | 50.2 5.1 | 0059 | 24.0 7.2 | 66 22 | 4 5 | 6.7 | 26.3 7.2 | 0841 | NNE | 17 | 0.00 | 24.30 | 0.314 0.044 | 740 14 | 100 20 |
| Napa-NW (Ranch 54) | 5/18/26 | 86.5 10.5 | 1719 | 52.3 6.7 | 0053 | 22.6 8.9 | 54 34 | 4 6 | 4.9 | 20.6 2.8 | 0613 | NNW | 336 | 0.00 | 26.77 | - | 0 0 | 100 0 |
| Napa-North (Ranch 29) | 5/18/26 | 86.5 9.7 | 1723 | 51.7 6.6 | 0028 | 26.2 7.2 | 65 31 | 7 4 | 3.1 | 20.5 5.6 | 1018 | NNW | 336 | 0.00 | 25.18 | 0.188 0.024 | 430 2 | 100 0 |
| Max | 89.8 | - | 61.0 | - | 32.2 | 80 | 10 | 10.2 | 33.9 | - | - | 0.00 | 32.79 | 0.355 | 742 | - | |
| Avg | - | - | - | - | 24.4 | - | - | 5.5 | - | - | - | - | - | - | - | - | |
| Min | 83.3 | - | 46.4 | - | 19.4 | 26 | 1 | 2.2 | 18.6 | - | - | 0.00 | 23.62 | 0.188 | 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 | 5/18/26 | 77.6 7.2 | 1600 | 57.9 6.9 | 0558 | 19.4 8.9 | 28 34 | 6 7 | 6.6 | 25.2 1.1 | 0649 | NNE | 15 | 0.00 | 34.19 | 0.261 0.018 | 598 10 | 50 20 |
| Mount George (Napa East) | 5/18/26 | 85.0 31.8 | 0259 | 50.5 0.6 | 0059 | 26.3 12.5 | 61 36 | 5 6 | 5.1 | 30.0 0.8 | 0900 | N | 1 | 0.00 | 17.04 | 0.285 0.036 | 708 16 | 100 0 |
| Napa-East (Palmaz 300') | 5/18/26 | 86.9 9.1 | 1645 | 54.8 10.8 | 0132 | 25.0 8.9 | 46 47 | 5 4 | 3.7 | 34.1 9.3 | 0921 | ENE | 65 | 0.00 | 23.29 | 0.233 0.040 | 584 13 | 100 0 |
| Napa-East (Palmaz 1200') | 5/17/26 | 71.4 5.1 | 1645 | 41.3 1.7 | 0549 | 31.5 10.7 | 100 13 | 11 13 | 3.7 | 25.6 10.0 | 1558 | W | 273 | - | - | 0.218 0.021 | 702 22 | 50 10 |
| Napa-East (Palmaz 1400') | 5/18/26 | 77.8 6.1 | 1514 | 53.0 7.8 | 2353 | 24.8 6.2 | 42 39 | 9 5 | 7.6 | 36.2 4.0 | 0922 | NNE | 32 | 0.00 | 30.80 | 0.278 0.031 | 700 17 | 70 20 |
| Wooden Valley | 5/18/26 | 81.7 9.5 | 1752 | 45.4 0.9 | 2256 | 28.0 3.2 | 84 10 | 8 3 | 5.7 | 24.3 6.7 | 1149 | N | 2 | 0.00 | 29.11 | 0.276 0.026 | 733 19 | 100 10 |
| Napa-West Upper (Truchard) | 5/18/26 | 85.0 9.2 | 1738 | 59.1 12.9 | 0040 | 22.1 9.8 | 32 56 | 6 5 | 6.7 | 27.6 4.8 | 0448 | N | 4 | 0.00 | 24.41 | 0.304 0.039 | 721 19 | 100 0 |
| Napa-West Lower (Truchard) | 5/18/26 | 90.2 9.2 | 1628 | 43.3 2.8 | 0059 | 27.6 5.2 | 79 21 | 7 4 | - | - | - | - | - | - | - | - | 90 10 |
| Napa-South (Toyon Farms) | 5/18/26 | 87.7 9.5 | 1717 | 55.9 9.4 | 0057 | 33.6 4.9 | 58 37 | 10 5 | 3.1 | 14.6 2.5 | 0409 | ENE | 64 | 0.00 | 18.34 | 0.151 0.015 | 360 12 | 90 10 |
| Toyon Remote 1 | 5/18/26 | 86.6 8.4 | 1747 | 42.7 4.0 | 0057 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 5/18/26 | 88.0 10.6 | 1743 | 45.8 3.8 | 0100 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 5/18/26 | 88.4 10.8 | 1530 | 47.2 5.3 | 0100 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 5/18/26 | 85.3 8.3 | 1651 | 50.1 6.3 | 2347 | 24.7 7.4 | 63 29 | 5 5 | 6.2 | 28.1 1.5 | 0941 | NNE | 17 | 0.00 | 23.58 | 0.303 0.047 | 740 26 | 90 10 |
| Carneros (Saintsbury) | 5/18/26 | 84.6 9.2 | 1645 | 51.2 8.1 | 0035 | 25.3 7.9 | 58 35 | 6 4 | 5.7 | 26.3 0.4 | 0902 | N | 353 | 0.00 | 8.68 | - | - | 100 0 |
| Suscol Lower (Ranch 35) | 5/18/26 | 86.0 9.1 | 1619 | 50.3 5.5 | 0018 | 24.6 7.8 | - | - | 7.2 | 25.5 4.5 | 0832 | NNW | 345 | 0.00 | 22.84 | 0.301 0.046 | 652 18 | 100 0 |
| Suscol Mtn (Ranch 93) | 5/18/26 | 82.7 6.6 | 1721 | 60.2 13.4 | 0548 | 19.4 11.1 | 25 55 | 6 4 | 9.6 | 36.2 8.2 | 0905 | NNE | 19 | 0.00 | 18.60 | - | - | 100 0 |
| Suscol Upper (Ranch 92) | 5/18/26 | 84.4 9.7 | 1536 | 61.4 14.7 | 0612 | 21.0 10.2 | 24 57 | 6 5 | 6.7 | 31.7 5.7 | 0402 | NNW | 333 | 0.00 | 22.35 | - | - | 100 20 |
| Stanly (Ranch 45) | 5/18/26 | 87.4 11.2 | 1518 | 48.4 5.2 | 0056 | 27.6 6.3 | 78 14 | 6 4 | 9.2 | 29.4 2.0 | 0926 | NNE | 20 | 0.00 | 22.49 | 0.349 0.064 | 785 23 | 90 10 |
| Carneros Upper (Ranch 81) | 5/18/26 | 84.1 9.5 | 1739 | 62.9 15.5 | 0052 | 19.2 10.1 | - | - | 10.0 | 38.1 3.2 | 0723 | NNE | 28 | - | - | - | - | 100 20 |
| Carneros (Mitsuko) | 5/18/26 | 86.1 8.3 | 1701 | 43.2 4.2 | 0101 | - | - | - | - | - | - | - | - | - | - | - | 100 0 |
| Carneros Lower (Ranch 81) | 5/18/26 | 86.0 10.4 | 1740 | 49.4 4.9 | 0051 | 27.0 5.9 | 68 24 | 6 6 | 5.4 | 28.9 2.9 | 0928 | NE | 38 | 0.00 | 19.42 | 0.271 0.037 | 623 14 | 100 0 |
| Carneros (Milton Rd) | 5/18/26 | 87.2 9.2 | 1704 | 43.6 2.8 | 0102 | 25.5 7.6 | 78 15 | 7 4 | - | - | - | - | 0.00 | 18.07 | - | - | 100 0 |
| Max | 90.2 | - | 62.9 | - | 33.6 | 84 | 10 | 10.0 | 38.1 | - | - | 0.00 | 34.19 | 0.349 | 785 | - | |
| Avg | - | - | - | - | 24.8 | - | - | 6.6 | - | - | - | - | - | - | - | - | |
| Min | 77.6 | - | 42.7 | - | 19.2 | 24 | 5 | 3.1 | 14.6 | - | - | 0.00 | 8.68 | 0.151 | 360 | - |