| 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 | 5/28/26 | 66.1 0.5 | 1711 | 46.0 9.1 | 0628 | - | - | - | - | - | - | - | 0.40 | 50.53 | - | - | 40 10 |
| Pope Valley (Weeks Lake) | 5/28/26 | 71.3 1.2 | 1739 | 50.6 12.1 | 0516 | 49.1 2.1 | 100 0 | 39 7 | 2.1 0.7 | 16.2 5.5 | 1506 | SE | 128 | 0.21 | 26.63 | 0.141 0.047 | 480 162 | 60 10 |
| Dollarhide Base | 5/28/26 | 73.4 1.8 | 1739 | 51.5 8.3 | 0550 | 51.5 1.7 | 99 1 | 43 7 | 4.0 1.5 | 16.2 1.4 | 1118 | NE | 49 | 0.16 | 23.55 | 0.175 0.052 | 596 179 | 60 10 |
| Dollarhide 1AS Remote | 5/28/26 | 74.4 0.0 | 1705 | 51.7 12.2 | 0458 | 51.1 2.6 | 94 1 | 43 6 | 2.7 1.1 | 13.7 0.6 | 1940 | WSW | 254 | - | - | - | - | 60 10 |
| Dollarhide 16A Remote | 5/28/26 | 71.1 2.2 | 1734 | 51.6 8.8 | 0602 | 51.1 1.8 | 99 1 | 45 7 | - | - | - | - | - | - | - | - | 60 10 |
| Dollarhide 18A Remote | 5/28/26 | 72.8 0.1 | 1719 | 51.3 13.7 | 0508 | 51.2 3.1 | 99 1 | 43 6 | - | - | - | - | - | - | - | - | 60 10 |
| Hardin Rd (Eakle) | 5/28/26 | 70.8 2.0 | 1611 | 51.6 10.5 | 0611 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| Angwin | 5/28/26 | 62.1 0.1 | 1638 | 44.9 0.9 | 0622 | 45.9 3.4 | 100 6 | 52 8 | 2.9 0.5 | 12.5 0.4 | 1938 | SE | 129 | 0.32 | 46.17 | 0.017 0.008 | 0 0 | 40 10 |
| Lower Angwin (Pioneer) | 5/28/26 | 65.3 0.4 | 1720 | 46.8 8.2 | 0556 | - | - | - | 2.3 0.5 | 11.8 2.0 | 2341 | SW | 224 | - | - | - | - | 40 10 |
| Las Posadas (Cal Fire) | 5/28/26 | 67.0 0.2 | 1657 | 48.2 4.7 | 0542 | 48.0 1.3 | 98 2 | 48 5 | 5.7 1.7 | 17.8 2.6 | 2334 | WSW | 248 | 0.31 | 35.41 | 0.120 0.004 | 395 12 | - |
| Deer Park | 5/28/26 | 70.6 2.5 | 1647 | 50.8 3.8 | 0602 | 48.6 1.1 | 97 5 | 42 6 | 3.6 0.5 | 13.2 1.4 | 1941 | NW | 307 | 0.28 | 29.37 | 0.112 0.000 | 328 19 | 40 10 |
| Lower Chiles Valley (Brown) | 5/28/26 | 70.1 0.9 | 1629 | 50.2 12.7 | 0530 | 48.6 1.5 | 95 5 | 41 3 | 2.6 0.9 | 12.6 1.0 | 1102 | SE | 138 | 0.14 | 26.23 | 0.144 0.034 | 508 110 | 40 10 |
| Moss Creek Vineyard/Reservior | 5/28/26 | 69.5 5.3 | 1634 | 50.9 8.9 | 0620 | 47.8 1.2 | 96 4 | 39 9 | - | - | - | - | 0.08 | 27.15 | - | - | 30 10 |
| Max | 74.4 | - | 51.7 | - | 51.5 | 100 | 52 | 5.7 | 17.8 | - | - | 0.40 | 50.53 | 0.175 | 596 | - | |
| Avg | - | - | - | - | 49.3 | - | - | 3.2 | - | - | - | - | - | - | - | - | |
| Min | 62.1 | - | 44.9 | - | 45.9 | 94 | 39 | 2.1 | 11.8 | - | - | 0.08 | 23.55 | 0.017 | 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 | 5/25/26 | 55.0 18.5 | 0908 | 50.5 1.6 | 0548 | 48.1 3.9 | 96 1 | 81 29 | - | - | - | - | 0.00 | 32.79 | - | - | 30 10 |
| Diamond Mtn (Schramsberg) | 5/28/26 | 68.4 3.0 | 1644 | 49.6 4.6 | 0538 | 48.6 2.8 | 100 8 | 44 8 | - | - | - | - | 0.24 | 31.46 | - | - | 40 10 |
| Diamond Mtn (McEachran) | 5/28/26 | 72.0 1.2 | 1650 | 51.0 5.1 | 0538 | 49.7 2.7 | 98 7 | 40 4 | - | - | - | - | - | - | - | - | 30 10 |
| St. Helena-North | 5/28/26 | 71.6 1.8 | 1747 | 52.3 8.4 | 0537 | 48.8 1.8 | 92 1 | 36 3 | 2.7 | 16.7 3.9 | 1909 | NNW | 333 | 0.27 | 31.48 | 0.137 0.030 | 434 100 | 30 10 |
| St. Helena (NVV Office) | 5/28/26 | 75.1 2.0 | 1740 | 53.0 6.9 | 0534 | - | - | - | 1.2 | 10.0 0.6 | 1132 | ENE | 61 | 0.26 | 29.13 | - | - | 50 10 |
| Tiara Fria (East St. Helena) | 5/28/26 | 72.0 1.5 | 1713 | 53.0 8.6 | 0458 | 50.9 2.5 | 95 0 | 40 5 | 2.2 | 12.4 0.9 | 1719 | S | 188 | 0.26 | 27.01 | - | - | 50 10 |
| Rutherford Hill Estate | 5/28/26 | 74.1 2.8 | 1644 | 51.5 5.8 | 0445 | 50.1 1.5 | 100 3 | 38 6 | 1.5 | 11.6 2.4 | 1408 | SSW | 202 | 0.22 | 25.35 | 0.134 0.010 | 448 25 | 60 10 |
| Rutherford-North (Mee Ln) | 5/28/26 | 73.5 1.3 | 1712 | 50.2 10.5 | 0654 | 49.8 2.8 | 96 1 | 38 3 | 2.5 | 14.2 0.0 | 1311 | SE | 132 | 0.32 | 24.87 | 0.134 0.006 | 423 11 | 30 10 |
| Rutherford (STS) | 5/28/26 | 73.0 1.6 | 1611 | 52.6 11.4 | 0455 | 51.8 2.9 | 91 1 | 45 5 | 1.6 | 10.9 2.6 | 1132 | E | 100 | 0.27 | 26.10 | 0.126 0.009 | 424 40 | 60 10 |
| Oakville-NE (Ranch 88) | 5/28/26 | 73.8 0.1 | 1643 | 52.9 11.8 | 0415 | 50.5 2.7 | 99 1 | 36 3 | 1.1 | 12.5 0.1 | 1135 | ESE | 107 | 0.25 | 25.32 | 0.120 0.009 | 387 52 | 80 10 |
| OV561-East | 5/28/26 | 76.7 5.4 | 1707 | 53.1 8.8 | 0440 | - | - | - | - | - | - | - | - | - | - | - | 50 10 |
| Oakville | 5/28/26 | 72.5 0.3 | 1618 | 53.0 9.5 | 0433 | 50.5 2.1 | 96 1 | 38 2 | 2.4 | 16.6 3.9 | 1358 | WSW | 237 | 0.25 | 26.11 | 0.140 0.002 | 469 18 | 30 10 |
| OV518-West | 5/28/26 | 71.9 0.3 | 1736 | 53.0 9.2 | 0454 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| To Kalon Remote (TKKE) | 5/28/26 | 73.4 0.7 | 1743 | 53.4 11.8 | 0445 | - | - | - | - | - | - | - | - | - | - | - | 50 10 |
| To Kalon | 5/28/26 | 72.1 0.7 | 1646 | 53.1 10.0 | 0642 | 51.0 3.2 | 97 1 | 41 3 | 2.2 | 12.2 0.2 | 1657 | SE | 142 | 0.27 | 28.00 | 0.132 0.000 | 429 15 | 30 10 |
| To Kalon Remote (TKN5) | 5/28/26 | 72.9 0.6 | 1628 | 53.4 10.4 | 0411 | - | - | - | - | - | - | - | - | - | - | - | 50 10 |
| Yountville (Ranch 67) | 5/28/26 | 70.7 0.4 | 1643 | 52.4 9.0 | 0401 | 49.6 2.2 | 95 2 | 38 1 | 2.5 | 14.2 0.4 | 1142 | ENE | 76 | 0.27 | 24.03 | 0.144 0.006 | 507 47 | 30 10 |
| Stags Leap Dist (Silverado Vineyards) | 5/28/26 | 70.9 1.3 | 1603 | 52.6 8.9 | 0631 | 49.6 1.9 | 94 2 | 38 2 | 1.8 | 12.0 1.0 | 1149 | NNE | 26 | 0.27 | 28.04 | 0.135 0.011 | 452 74 | 10 10 |
| Borreo (Soda Canyon) | 5/28/26 | 69.6 1.0 | 1636 | 51.1 10.5 | 0604 | 48.2 2.8 | 96 2 | 40 4 | 1.8 | 13.6 1.8 | 1203 | SE | 130 | 0.20 | 27.74 | 0.121 0.026 | 413 112 | 10 10 |
| Wappo Hill Floor | 5/28/26 | 73.2 0.0 | 1608 | 51.7 10.6 | 0625 | 50.6 2.7 | 100 0 | 39 2 | 2.8 | 13.0 3.7 | 1158 | ESE | 117 | 0.28 | 27.12 | 0.149 0.001 | 490 13 | 60 10 |
| Stags Leap Dist (Chimney Rock) | 5/28/26 | 72.3 1.5 | 1609 | 53.5 11.7 | 0553 | 52.0 2.9 | 98 2 | 44 0 | 2.7 | 14.5 6.1 | 1044 | ESE | 103 | 0.29 | 26.50 | 0.140 0.002 | 461 4 | 0 10 |
| Yountville-South (Ranch 87) | 5/28/26 | 73.4 0.3 | 1702 | 53.5 9.8 | 0526 | 51.7 2.7 | 100 0 | 40 0 | 2.0 | 11.0 1.1 | 1146 | E | 85 | 0.30 | 27.76 | 0.154 0.006 | 526 2 | 90 20 |
| Yountville-SE (Ranch 85) | 5/28/26 | 71.7 3.1 | 1702 | 53.2 9.0 | 0524 | 51.2 2.5 | 98 2 | 41 3 | 2.7 | 12.6 4.2 | 1126 | S | 177 | 0.30 | 26.09 | - | 0 0 | 30 10 |
| Oak Knoll-East (Ranch 53) | 5/28/26 | 72.1 1.2 | 1800 | 53.6 9.8 | 0621 | 50.4 2.1 | 94 1 | 38 1 | 2.3 | 18.1 4.5 | 1405 | SE | 143 | 0.31 | 24.76 | 0.153 0.004 | 526 0 | 60 10 |
| Napa-NW (Ranch 54) | 5/28/26 | 76.7 0.9 | 1622 | 53.4 8.9 | 0619 | 51.1 3.0 | 100 8 | 35 3 | 0.8 | 8.7 1.0 | 1230 | NE | 45 | 0.28 | 27.13 | - | 0 0 | 60 10 |
| Napa-North (Ranch 29) | 5/28/26 | 74.1 2.0 | 1758 | 53.4 8.2 | 0706 | 51.1 2.2 | 100 0 | 37 2 | 1.1 | 11.8 0.7 | 1718 | SSE | 156 | 0.32 | 25.63 | 0.116 0.024 | 393 113 | 0 10 |
| Max | 76.7 | - | 53.6 | - | 52.0 | 100 | 45 | 2.8 | 18.1 | - | - | 0.32 | 31.48 | 0.154 | 526 | - | |
| Avg | - | - | - | - | 50.4 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 68.4 | - | 49.6 | - | 48.2 | 91 | 35 | 0.8 | 8.7 | - | - | 0.20 | 24.03 | 0.116 | 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 | 5/28/26 | 63.8 1.6 | 1606 | 48.1 0.2 | 0706 | 46.9 1.3 | 100 6 | 51 2 | 2.7 | 13.9 0.9 | 1052 | SW | 218 | 0.30 | 34.60 | 0.108 0.009 | 398 31 | 30 10 |
| Mount George (Napa East) | 5/28/26 | 71.3 0.8 | 1758 | 52.8 8.5 | 0546 | 50.0 2.6 | 95 3 | 41 2 | 2.5 | 19.1 1.1 | 1144 | ENE | 71 | 0.19 | 17.27 | 0.167 0.015 | 598 48 | 0 10 |
| Napa-East (Palmaz 300') | 5/28/26 | 74.3 1.1 | 1646 | 52.4 7.7 | 0607 | 49.9 1.8 | 100 0 | 37 2 | 2.5 | 20.0 7.6 | 1006 | ESE | 105 | 0.17 | 23.51 | 0.149 0.020 | 486 66 | 0 10 |
| Napa-East (Palmaz 1200') | 5/28/26 | 67.1 0.0 | 1657 | 49.4 8.2 | 0256 | 46.2 1.8 | 100 0 | 6 3 | 3.1 | 17.0 0.4 | 1045 | ESE | 106 | - | - | 0.152 0.012 | 580 47 | 30 10 |
| Napa-East (Palmaz 1400') | 5/28/26 | 66.2 2.6 | 1508 | 48.3 6.2 | 0515 | 48.5 1.2 | 100 0 | 49 4 | 3.4 | 14.9 1.7 | 1244 | ENE | 64 | 0.16 | 31.01 | 0.146 0.005 | 574 44 | 30 10 |
| Wooden Valley | 5/28/26 | 68.7 0.8 | 1624 | 50.5 8.6 | 0525 | 48.3 1.0 | 95 2 | 43 1 | 1.9 | 15.6 1.6 | 1541 | ESE | 106 | 0.12 | 29.45 | 0.141 0.011 | 520 39 | 40 10 |
| Napa-West Upper (Truchard) | 5/28/26 | 73.1 1.9 | 1606 | 51.7 5.7 | 0626 | 22.8 2.2 | 100 0 | 0 0 | 2.7 | 14.8 0.3 | 1416 | E | 83 | 0.25 | 24.70 | 0.170 0.002 | 553 4 | 0 10 |
| Napa-West Lower (Truchard) | 5/28/26 | 74.2 2.3 | 1535 | 52.7 12.0 | 0604 | 50.1 3.0 | 94 6 | 38 3 | - | - | - | - | - | - | - | - | 20 10 |
| Napa-South (Toyon Farms) | 5/28/26 | 74.7 0.5 | 1511 | 53.0 6.1 | 0425 | 53.2 2.7 | 100 0 | 46 0 | 0.4 | 10.8 3.2 | 1707 | S | 179 | 0.25 | 18.70 | 0.076 0.010 | 273 0 | 20 10 |
| Toyon Remote 1 | 5/28/26 | 72.8 2.0 | 1512 | 52.9 11.5 | 0434 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 5/28/26 | 74.0 0.9 | 1510 | 53.5 10.3 | 0635 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 5/28/26 | 72.4 2.6 | 1723 | 53.3 10.0 | 0433 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 5/28/26 | 71.7 1.4 | 1731 | 53.3 8.5 | 0604 | 49.7 2.9 | 95 0 | 38 1 | 3.4 | 15.6 0.8 | 1254 | ESE | 121 | 0.22 | 23.81 | 0.154 0.017 | 520 73 | 20 10 |
| Carneros (Saintsbury) | 5/28/26 | 71.2 1.6 | 1511 | 50.8 6.9 | 0642 | 49.7 2.3 | 100 0 | 39 0 | 3.9 | 18.9 3.3 | 1149 | E | 82 | 0.23 | 8.94 | - | - | 30 10 |
| Suscol Lower (Ranch 35) | 5/28/26 | 71.7 1.7 | 1444 | 52.5 8.0 | 0534 | 49.8 2.6 | - | - | 4.1 | 17.5 2.6 | 1205 | ESE | 103 | 0.35 | 23.25 | 0.162 0.003 | 538 6 | 30 10 |
| Suscol Mtn (Ranch 93) | 5/28/26 | 70.2 7.3 | 1432 | 50.0 3.1 | 0510 | 48.0 0.3 | 98 3 | 44 10 | 6.3 | 25.6 6.2 | 1139 | SSE | 158 | 0.62 | 19.27 | - | - | 0 10 |
| Suscol Upper (Ranch 92) | 5/28/26 | 71.3 0.1 | 1728 | 50.5 3.7 | 0508 | 36.3 10.7 | 100 5 | 3 32 | 3.0 | 19.9 3.0 | 1146 | NE | 51 | 0.38 | 22.76 | - | - | 30 10 |
| Stanly (Ranch 45) | 5/28/26 | 73.1 1.8 | 1659 | 51.6 7.7 | 0555 | 49.6 2.1 | 95 1 | 37 1 | 5.6 | 20.2 5.0 | 1218 | ESE | 121 | 0.02 | 22.51 | 0.192 0.005 | 656 6 | 20 10 |
| Carneros Upper (Ranch 81) | 5/28/26 | 72.6 0.9 | 1723 | 52.2 4.4 | 0326 | 37.7 9.2 | - | - | 6.3 | 20.8 4.3 | 1227 | ENE | 71 | - | - | - | - | 30 10 |
| Carneros (Mitsuko) | 5/28/26 | 73.2 0.3 | 1519 | 53.1 12.5 | 0405 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Carneros Lower (Ranch 81) | 5/28/26 | 72.1 1.9 | 1726 | 53.0 9.2 | 0458 | 44.0 3.7 | 100 0 | 0 0 | 1.8 | 13.7 1.0 | 1204 | SSE | 163 | 0.04 | 19.46 | 0.142 0.009 | 474 45 | 30 10 |
| Carneros (Milton Rd) | 5/28/26 | 71.4 2.0 | 1716 | 54.0 13.0 | 0349 | 49.9 3.0 | 92 2 | 38 1 | - | - | - | - | 0.00 | 18.07 | - | - | 30 10 |
| Max | 74.7 | - | 54.0 | - | 53.2 | 100 | 51 | 6.3 | 25.6 | - | - | 0.62 | 34.60 | 0.192 | 656 | - | |
| Avg | - | - | - | - | 46.1 | - | - | 3.4 | - | - | - | - | - | - | - | - | |
| Min | 63.8 | - | 48.1 | - | 22.8 | 92 | 0 | 0.4 | 10.8 | - | - | 0.00 | 8.94 | 0.076 | 273 | - |