| 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 | 5/27/26 | 65.7 0.5 | 1349 | 36.9 0.4 | 0600 | - | - | - | - | - | - | - | 0.04 | 50.13 | - | - | 50 10 |
| Pope Valley (Weeks Lake) | 5/27/26 | 72.5 0.6 | 1133 | 38.5 3.9 | 0550 | 47.0 3.6 | 100 0 | 32 6 | 1.4 1.1 | 10.7 5.3 | 1049 | SE | 132 | 0.17 | 26.42 | 0.094 0.029 | 318 82 | 70 10 |
| Dollarhide Base | 5/27/26 | 75.1 1.0 | 1201 | 43.3 4.3 | 0552 | 49.8 2.8 | 100 2 | 36 3 | 2.5 1.4 | 17.5 6.3 | 1512 | NNE | 27 | 0.22 | 23.39 | 0.123 0.018 | 417 54 | 70 10 |
| Dollarhide 1AS Remote | 5/27/26 | 74.5 0.7 | 1215 | 39.4 3.1 | 0523 | 48.5 2.3 | 95 1 | 37 5 | 1.6 1.2 | 13.2 5.2 | 1158 | S | 172 | - | - | - | - | 70 10 |
| Dollarhide 16A Remote | 5/27/26 | 73.3 0.4 | 1155 | 42.8 2.7 | 0523 | 49.4 2.6 | 100 2 | 39 5 | - | - | - | - | - | - | - | - | 70 10 |
| Dollarhide 18A Remote | 5/27/26 | 72.7 0.4 | 1156 | 37.6 4.2 | 0522 | 48.1 2.6 | 100 1 | 37 2 | - | - | - | - | - | - | - | - | 70 10 |
| Hardin Rd (Eakle) | 5/27/26 | 72.8 1.8 | 1200 | 41.1 5.1 | 0556 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Angwin | 5/27/26 | 62.2 0.7 | 1158 | 44.0 1.1 | 0511 | 42.5 0.8 | 94 6 | 44 4 | 3.4 0.6 | 12.1 6.0 | 1352 | SSE | 148 | 0.47 | 45.85 | 0.025 0.005 | 0 0 | 50 10 |
| Lower Angwin (Pioneer) | 5/27/26 | 64.9 2.7 | 1210 | 38.6 1.8 | 0615 | - | - | - | 1.8 0.6 | 9.9 5.3 | 2014 | SW | 224 | - | - | - | - | 50 10 |
| Las Posadas (Cal Fire) | 5/27/26 | 66.8 0.3 | 1230 | 43.5 1.6 | 0450 | 46.6 1.9 | 96 1 | 44 6 | 4.0 2.1 | 15.3 9.5 | 1411 | SW | 215 | 0.34 | 35.10 | 0.116 0.022 | 406 80 | - |
| Deer Park | 5/27/26 | 73.1 2.0 | 1247 | 47.0 2.3 | 0559 | 47.5 2.8 | 92 4 | 36 4 | 3.1 1.6 | 14.6 11.8 | 1306 | WSW | 237 | 0.17 | 29.09 | 0.112 0.017 | 347 24 | 50 10 |
| Lower Chiles Valley (Brown) | 5/27/26 | 71.0 0.1 | 1252 | 37.5 5.5 | 0541 | 47.2 2.4 | 100 0 | 38 8 | 1.7 1.5 | 13.7 3.8 | 1350 | NE | 37 | 0.11 | 26.09 | 0.110 0.022 | 398 66 | 50 10 |
| Moss Creek Vineyard/Reservior | 5/27/26 | 74.8 4.1 | 1310 | 42.1 4.4 | 0559 | 46.6 1.5 | 100 3 | 30 1 | - | - | - | - | 0.00 | 27.07 | - | - | 40 10 |
| Max | 75.1 | - | 47.0 | - | 49.8 | 100 | 44 | 4.0 | 17.5 | - | - | 0.47 | 50.13 | 0.123 | 417 | - | |
| Avg | - | - | - | - | 47.3 | - | - | 2.4 | - | - | - | - | - | - | - | - | |
| Min | 62.2 | - | 36.9 | - | 42.5 | 92 | 30 | 1.4 | 9.9 | - | - | 0.00 | 23.39 | 0.025 | 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) | 5/27/26 | 71.4 1.6 | 1410 | 45.0 2.6 | 0516 | 45.8 2.2 | 92 6 | 37 5 | - | - | - | - | 0.02 | 31.22 | - | - | 50 10 |
| Diamond Mtn (McEachran) | 5/27/26 | 73.2 3.5 | 1411 | 45.9 2.5 | 0601 | 46.9 3.4 | 91 8 | 35 2 | - | - | - | - | - | - | - | - | 40 10 |
| St. Helena-North | 5/27/26 | 73.5 1.8 | 1248 | 43.9 3.0 | 0614 | 47.0 3.8 | 91 6 | 33 8 | 2.1 | 12.7 3.3 | 1500 | S | 191 | 0.12 | 31.21 | 0.107 0.044 | 334 145 | 40 10 |
| St. Helena (NVV Office) | 5/27/26 | 77.1 0.8 | 1321 | 46.1 4.1 | 0541 | - | - | - | 1.1 | 10.6 5.5 | 1456 | ENE | 72 | 0.38 | 28.87 | - | - | 60 10 |
| Tiara Fria (East St. Helena) | 5/27/26 | 73.5 0.5 | 1322 | 44.4 5.0 | 0533 | 48.4 3.0 | 96 5 | 35 6 | 2.2 | 13.3 6.9 | 1506 | E | 90 | 0.29 | 26.75 | - | - | 60 10 |
| Rutherford Hill Estate | 5/27/26 | 76.9 0.4 | 1324 | 45.8 3.2 | 0551 | 48.6 2.5 | 97 8 | 32 3 | 1.6 | 14.0 7.0 | 0021 | SSW | 198 | 0.09 | 25.13 | 0.124 0.012 | 423 17 | 70 10 |
| Rutherford-North (Mee Ln) | 5/27/26 | 74.8 0.7 | 1339 | 39.6 5.5 | 0615 | 47.1 1.6 | 96 1 | 35 6 | 2.7 | 14.2 9.4 | 2359 | SSE | 158 | 0.02 | 24.55 | 0.128 0.025 | 412 77 | 40 10 |
| Rutherford (STS) | 5/27/26 | 74.6 0.1 | 1236 | 41.1 2.7 | 0533 | 48.8 1.2 | 92 1 | 40 7 | 2.2 | 13.5 7.2 | 0031 | ESE | 107 | 0.00 | 25.83 | 0.135 0.022 | 464 59 | 70 10 |
| Oakville-NE (Ranch 88) | 5/27/26 | 73.7 0.4 | 1404 | 41.0 5.0 | 0604 | 47.8 3.4 | 100 6 | 33 7 | 1.9 | 12.6 9.8 | 0009 | SSE | 158 | 0.10 | 25.07 | 0.129 0.017 | 439 32 | 90 10 |
| OV561-East | 5/27/26 | 71.3 3.2 | 1257 | 44.4 4.0 | 0556 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| Oakville | 5/27/26 | 72.1 1.5 | 1252 | 43.5 3.2 | 0601 | 48.3 2.8 | 97 2 | 36 9 | 2.8 | 12.6 8.6 | 0040 | SE | 124 | 0.19 | 25.86 | 0.138 0.033 | 487 88 | 40 10 |
| OV518-West | 5/27/26 | 72.2 0.0 | 1241 | 43.8 3.1 | 0612 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| To Kalon Remote (TKKE) | 5/27/26 | 74.1 0.4 | 1233 | 41.6 4.5 | 0553 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| To Kalon | 5/27/26 | 71.4 2.6 | 1418 | 43.1 3.2 | 0537 | 47.7 1.6 | 98 3 | 38 7 | 2.9 | 12.4 6.7 | 1246 | SSE | 153 | 0.00 | 27.73 | 0.132 0.023 | 444 65 | 40 10 |
| To Kalon Remote (TKN5) | 5/27/26 | 73.6 0.4 | 1213 | 43.0 4.0 | 0602 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| Yountville (Ranch 67) | 5/27/26 | 71.1 1.6 | 1415 | 43.5 1.8 | 0549 | 47.4 2.8 | 97 2 | 37 9 | 2.7 | 13.8 10.1 | 2329 | SE | 130 | 0.02 | 23.76 | 0.150 0.025 | 554 67 | 40 10 |
| Stags Leap Dist (Silverado Vineyards) | 5/27/26 | 72.2 0.8 | 1410 | 43.6 1.9 | 0614 | 47.7 2.4 | 96 2 | 37 8 | 1.8 | 13.0 3.2 | 1125 | S | 170 | 0.02 | 27.77 | 0.146 0.014 | 526 35 | 20 10 |
| Borreo (Soda Canyon) | 5/27/26 | 70.7 1.1 | 1332 | 40.6 3.3 | 0542 | 45.4 1.4 | 98 3 | 36 5 | 2.0 | 15.3 0.2 | 1502 | ENE | 75 | 0.00 | 27.54 | 0.147 0.011 | 525 56 | 20 10 |
| Wappo Hill Floor | 5/27/26 | 73.2 1.5 | 1437 | 41.1 4.1 | 0620 | 47.9 1.9 | 100 0 | 37 9 | 2.7 | 16.7 8.1 | 1501 | ENE | 60 | 0.00 | 26.84 | 0.148 0.009 | 503 14 | 70 10 |
| Stags Leap Dist (Chimney Rock) | 5/27/26 | 73.8 0.9 | 1427 | 41.8 3.4 | 0608 | 49.1 1.4 | 100 3 | 44 10 | 2.7 | 20.5 0.9 | 1459 | NE | 41 | 0.00 | 26.21 | 0.138 0.005 | 465 8 | 10 10 |
| Yountville-South (Ranch 87) | 5/27/26 | 73.2 0.3 | 1335 | 43.7 2.7 | 0555 | 49.1 2.1 | 100 0 | 40 11 | 1.8 | 12.1 2.2 | 1513 | E | 100 | 0.00 | 27.46 | 0.148 0.008 | 524 8 | 70 10 |
| Yountville-SE (Ranch 85) | 5/27/26 | 74.8 1.5 | 1339 | 44.2 3.5 | 0611 | 48.7 1.8 | 100 3 | 39 9 | 2.3 | 16.8 2.0 | 1507 | E | 80 | 0.00 | 25.79 | - | 0 0 | 40 10 |
| Oak Knoll-East (Ranch 53) | 5/27/26 | 73.3 0.6 | 1350 | 43.8 4.6 | 0558 | 48.3 2.1 | 95 2 | 37 11 | 1.9 | 13.7 4.2 | 1513 | E | 99 | 0.11 | 24.45 | 0.149 0.001 | 526 27 | 70 10 |
| Napa-NW (Ranch 54) | 5/27/26 | 77.6 4.0 | 1344 | 44.6 4.1 | 0623 | 48.1 2.0 | 92 2 | 32 4 | 0.9 | 9.7 18.8 | 1500 | SSW | 209 | 0.08 | 26.85 | - | 0 0 | 70 10 |
| Napa-North (Ranch 29) | 5/27/26 | 72.0 0.8 | 1420 | 45.1 3.4 | 0619 | 49.0 1.0 | 100 0 | 39 7 | 1.7 | 11.1 5.2 | 1447 | SSE | 164 | 0.03 | 25.31 | 0.092 0.006 | 279 46 | 10 10 |
| Max | 77.6 | - | 46.1 | - | 49.1 | 100 | 44 | 2.9 | 20.5 | - | - | 0.38 | 31.22 | 0.150 | 554 | - | |
| Avg | - | - | - | - | 47.9 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 70.7 | - | 39.6 | - | 45.4 | 91 | 32 | 0.9 | 9.7 | - | - | 0.00 | 23.76 | 0.092 | 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 | 5/27/26 | 65.4 2.5 | 1255 | 48.4 1.7 | 0059 | 45.7 2.5 | 94 2 | 49 14 | 1.7 | 13.0 5.5 | 1308 | SE | 145 | 0.11 | 34.30 | 0.099 0.039 | 367 122 | 40 10 |
| Mount George (Napa East) | 5/27/26 | 70.5 0.5 | 1405 | 44.3 2.2 | 0601 | 47.4 0.7 | 98 2 | 40 7 | 1.6 | 18.0 0.9 | 1523 | N | 6 | 0.00 | 17.08 | 0.152 0.026 | 550 121 | 10 10 |
| Napa-East (Palmaz 300') | 5/27/26 | 75.4 1.5 | 1417 | 44.7 3.2 | 0551 | 48.1 0.6 | 100 5 | 35 6 | 1.8 | 12.4 5.0 | 1322 | WSW | 239 | 0.00 | 23.34 | 0.129 0.014 | 420 61 | 10 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') | 5/27/26 | 68.8 0.7 | 1425 | 42.1 1.4 | 0545 | 47.3 0.8 | 100 0 | 45 7 | 2.5 | 13.2 4.8 | 1516 | NE | 38 | 0.01 | 30.85 | 0.141 0.013 | 530 57 | 40 10 |
| Wooden Valley | 5/27/26 | 69.5 1.7 | 1418 | 41.9 1.4 | 0304 | 47.3 2.3 | 98 1 | 42 4 | 2.4 | 14.0 4.5 | 1510 | NW | 320 | 0.07 | 29.33 | 0.130 0.016 | 481 72 | 50 10 |
| Napa-West Upper (Truchard) | 5/27/26 | 75.0 2.6 | 1433 | 46.0 2.5 | 0539 | 25.1 23.1 | 100 0 | 0 0 | 3.3 | 15.1 9.8 | 1428 | SSE | 157 | 0.00 | 24.45 | 0.168 0.011 | 557 47 | 10 10 |
| Napa-West Lower (Truchard) | 5/27/26 | 76.5 0.5 | 1409 | 40.7 4.3 | 0602 | 47.1 0.2 | 100 6 | 35 6 | - | - | - | - | - | - | - | - | 30 10 |
| Napa-South (Toyon Farms) | 5/27/26 | 74.2 1.7 | 1419 | 47.0 2.3 | 0556 | 50.4 0.4 | 100 1 | 45 5 | 2.6 | 14.0 5.4 | 1439 | SSE | 160 | 0.00 | 18.45 | 0.086 0.010 | 273 39 | 30 10 |
| Toyon Remote 1 | 5/27/26 | 74.8 3.6 | 1808 | 41.4 4.7 | 0613 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 5/27/26 | 73.0 0.3 | 1429 | 43.2 4.3 | 0622 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 5/27/26 | 75.0 2.8 | 1759 | 43.3 4.3 | 0603 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 5/27/26 | 73.0 1.3 | 1426 | 44.8 4.6 | 0531 | 46.8 0.3 | 94 5 | 37 2 | 2.8 | 14.8 5.7 | 1422 | S | 170 | 0.00 | 23.59 | 0.171 0.008 | 593 18 | 30 10 |
| Carneros (Saintsbury) | 5/27/26 | 72.8 0.7 | 1710 | 43.9 3.6 | 0611 | 47.4 0.3 | 100 8 | 39 6 | 4.3 | 15.6 8.8 | 1429 | S | 171 | 0.00 | 8.71 | - | - | 40 10 |
| Suscol Lower (Ranch 35) | 5/27/26 | 73.4 0.2 | 1425 | 44.5 1.9 | 0532 | 47.2 0.6 | - | - | 4.3 | 14.8 15.1 | 1431 | SSW | 196 | 0.00 | 22.90 | 0.165 0.010 | 532 54 | 40 10 |
| Suscol Mtn (Ranch 93) | 5/27/26 | 77.5 6.2 | 1439 | 46.9 0.5 | 0600 | 47.7 1.4 | 95 4 | 35 5 | 4.8 | 19.4 13.0 | 1901 | NW | 313 | 0.00 | 18.65 | - | - | 10 10 |
| Suscol Upper (Ranch 92) | 5/27/26 | 71.5 3.7 | 1434 | 46.8 1.2 | 0640 | 47.0 19.0 | 95 5 | 35 32 | 3.4 | 16.9 12.3 | 1304 | WSW | 251 | 0.00 | 22.38 | - | - | 40 10 |
| Stanly (Ranch 45) | 5/27/26 | 74.9 1.0 | 1428 | 43.9 3.4 | 0554 | 47.5 0.6 | 96 4 | 36 5 | 5.0 | 15.2 9.7 | 1842 | WSW | 256 | 0.00 | 22.49 | 0.197 0.004 | 651 1 | 30 10 |
| Carneros Upper (Ranch 81) | 5/27/26 | 73.5 4.0 | 1424 | 47.8 1.7 | 0538 | 46.9 0.9 | - | - | 5.3 | 25.1 7.3 | 1530 | W | 263 | - | - | - | - | 40 10 |
| Carneros (Mitsuko) | 5/27/26 | 73.4 1.2 | 1420 | 40.6 3.1 | 0547 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| Carneros Lower (Ranch 81) | 5/27/26 | 74.0 1.1 | 1400 | 43.8 5.0 | 0614 | 47.7 0.1 | 100 7 | 0 36 | 1.8 | 12.6 1.7 | 1419 | S | 169 | 0.00 | 19.42 | 0.151 0.013 | 518 50 | 40 10 |
| Carneros (Milton Rd) | 5/27/26 | 73.4 0.7 | 1707 | 40.9 3.8 | 0605 | 47.0 0.2 | 95 4 | 37 4 | - | - | - | - | 0.00 | 18.07 | - | - | 40 10 |
| Max | 77.5 | - | 48.4 | - | 50.4 | 100 | 49 | 5.3 | 25.1 | - | - | 0.11 | 34.30 | 0.197 | 651 | - | |
| Avg | - | - | - | - | 46.1 | - | - | 3.2 | - | - | - | - | - | - | - | - | |
| Min | 65.4 | - | 40.6 | - | 25.1 | 94 | 0 | 1.6 | 12.4 | - | - | 0.00 | 8.71 | 0.086 | 273 | - |