| 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 | 4/21/26 | 55.6 2.4 | 1544 | 41.1 1.1 | 2312 | - | - | - | - | - | - | - | 0.15 | 49.15 | - | - | 0 0 |
| Pope Valley (Weeks Lake) | 4/21/26 | 63.7 5.3 | 1438 | 39.6 0.1 | 2353 | 45.8 0.1 | 100 0 | 47 13 | 2.9 | 17.1 4.8 | 1451 | SW | 235 | 0.29 | 25.29 | 0.092 0.060 | 312 210 | 30 10 |
| Dollarhide Base | 4/21/26 | 62.8 1.3 | 1441 | 47.0 1.6 | 2326 | 48.2 0.9 | 100 0 | 52 14 | 5.4 | 25.9 1.5 | 1755 | WSW | 248 | 0.22 | 22.40 | 0.099 0.049 | 343 193 | 40 10 |
| Dollarhide 1AS Remote | 4/21/26 | 62.2 1.8 | 1452 | 44.0 0.5 | 2352 | 47.4 0.1 | 94 0 | 52 1 | 3.8 | 22.4 4.6 | 1813 | SW | 214 | - | - | - | - | 30 10 |
| Dollarhide 17B Remote | 4/21/26 | 62.7 2.4 | 1440 | 44.6 0.6 | 2257 | 48.2 0.3 | 100 0 | 52 5 | - | - | - | - | - | - | - | - | 40 10 |
| Dollarhide 18A Remote | 4/21/26 | 61.5 1.5 | 1504 | 41.6 0.2 | 2339 | 47.7 0.1 | 100 0 | 54 2 | - | - | - | - | - | - | - | - | 0 10 |
| Angwin | 4/21/26 | 52.0 1.6 | 1423 | 42.1 2.0 | 2310 | 42.8 1.3 | 100 0 | 62 23 | 4.6 | 19.9 0.6 | 1339 | S | 172 | 0.36 | 44.00 | 0.012 0.004 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 4/21/26 | 55.4 1.7 | 1430 | 42.6 0.2 | 2320 | - | - | - | 3.6 | 18.6 2.6 | 1425 | WNW | 295 | - | - | - | - | 0 0 |
| Deer Park | 4/21/26 | 61.9 3.9 | 1337 | 47.5 0.0 | 0010 | 46.3 0.5 | 98 1 | 46 9 | 3.7 | 19.8 2.2 | 1408 | WSW | 238 | 0.36 | 27.78 | 0.083 0.048 | 277 198 | 0 10 |
| Lower Chiles Valley (Brown) | 4/21/26 | 61.3 2.5 | 1516 | 45.0 4.0 | 2258 | 45.8 1.2 | 96 0 | 49 14 | 3.1 | 19.1 0.9 | 1715 | W | 273 | 0.30 | 24.99 | 0.095 0.030 | 353 154 | 0 0 |
| Moss Creek Vineyard/Reservior | 4/21/26 | 62.1 0.8 | 1407 | 46.0 4.6 | 2351 | 46.6 2.0 | 100 0 | 49 24 | - | - | - | - | 0.40 | 26.32 | - | - | 10 10 |
| Max | 63.7 | - | 47.5 | - | 48.2 | 100 | 62 | 5.4 | 25.9 | - | - | 0.40 | 49.15 | 0.099 | 353 | - | |
| Avg | - | - | - | - | 46.5 | - | - | 3.9 | - | - | - | - | - | - | - | - | |
| Min | 52.0 | - | 39.6 | - | 42.8 | 94 | 46 | 2.9 | 17.1 | - | - | 0.15 | 22.40 | 0.012 | 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 | 4/21/26 | 66.6 7.9 | 1325 | 46.5 1.7 | 2311 | 48.8 0.6 | 100 0 | 49 18 | - | - | - | - | 0.16 | 31.95 | - | - | 30 10 |
| Diamond Mtn (Schramsberg) | 4/21/26 | 60.9 5.7 | 1409 | 46.7 0.5 | 2327 | 46.6 0.2 | 100 0 | 49 11 | - | - | - | - | 0.16 | 30.34 | - | - | 0 0 |
| Diamond Mtn (McEachran) | 4/21/26 | 61.0 3.5 | 1413 | 46.2 0.4 | 2345 | 46.8 0.6 | 99 0 | 47 14 | - | - | - | - | - | - | - | - | 0 10 |
| St. Helena-North | 4/21/26 | 64.2 4.5 | 1505 | 45.4 0.7 | 2323 | 46.7 0.2 | 100 0 | 42 14 | 1.6 | 16.5 2.6 | 1730 | SW | 214 | 0.33 | 29.94 | 0.088 0.061 | 321 241 | 30 10 |
| St. Helena (NVV Office) | 4/21/26 | 64.7 3.3 | 1349 | 47.4 1.5 | 2331 | - | - | - | 1.2 | 12.9 4.6 | 1458 | W | 266 | 0.21 | 27.60 | - | - | 70 10 |
| Tiara Fria (East St. Helena) | 4/21/26 | 62.9 0.9 | 1418 | 46.4 1.7 | 2331 | 48.0 1.0 | 97 0 | 49 1 | 3.0 | 18.2 4.8 | 1447 | SW | 215 | 0.28 | 25.49 | - | - | 30 10 |
| Rutherford Hill Estate | 4/21/26 | 61.7 0.7 | 1614 | 48.3 1.5 | 0046 | 47.8 1.3 | 100 0 | 48 3 | 2.3 | 24.6 10.5 | 1648 | SW | 220 | 0.30 | 24.24 | 0.095 0.057 | 359 241 | 30 10 |
| Rutherford-North (Mee Ln) | 4/21/26 | 63.8 1.3 | 1432 | 44.1 2.6 | 2351 | 46.1 0.3 | 97 1 | 48 3 | 3.5 | 21.5 4.4 | 1411 | W | 275 | 0.21 | 23.67 | 0.109 0.073 | 389 281 | 40 10 |
| Rutherford (STS) | 4/21/26 | 64.4 1.3 | 1445 | 46.6 4.2 | 0036 | 48.2 0.9 | 91 1 | 55 8 | 3.1 | 20.2 6.6 | 1614 | WSW | 244 | 0.28 | 24.97 | 0.114 0.076 | 428 307 | 70 10 |
| Oakville-NE (Ranch 88) | 4/21/26 | 64.3 0.4 | 1440 | 46.6 4.3 | 2258 | 48.1 1.8 | 100 1 | 46 10 | 2.5 | 16.6 2.1 | 1450 | W | 280 | 0.22 | 24.08 | 0.111 0.069 | 411 282 | 0 0 |
| OV561-East | 4/21/26 | 64.8 2.1 | 1649 | 48.1 5.2 | 2314 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Oakville | 4/21/26 | 63.2 0.7 | 1541 | 48.0 5.1 | 2309 | 48.0 1.2 | 98 1 | 48 12 | 4.1 | 20.1 0.9 | 1602 | W | 274 | 0.48 | 24.66 | 0.118 0.067 | 449 292 | 30 10 |
| OV518-West | 4/21/26 | 62.5 1.6 | 1704 | 47.3 3.4 | 2309 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| To Kalon Remote (TKKE) | 4/21/26 | 65.2 0.9 | 1611 | 47.1 5.5 | 0052 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| To Kalon | 4/21/26 | 63.6 0.3 | 1441 | 46.4 4.2 | 0040 | 48.6 1.1 | 99 1 | 49 10 | 3.2 | 19.6 4.0 | 1416 | WSW | 240 | 0.26 | 26.87 | 0.103 0.059 | 385 251 | 0 10 |
| To Kalon Remote (TKN5) | 4/21/26 | 64.1 0.3 | 1556 | 46.9 4.5 | 0051 | - | - | - | - | - | - | - | - | - | - | - | 50 10 |
| Yountville (Ranch 67) | 4/21/26 | 62.6 1.2 | 1514 | 47.7 4.4 | 2232 | 47.4 1.4 | 97 1 | 46 12 | 3.2 | 18.4 2.2 | 1741 | W | 259 | 0.28 | 22.85 | 0.119 0.058 | 477 242 | 30 10 |
| Stags Leap Dist (Silverado Vineyards) | 4/21/26 | 64.6 1.2 | 1623 | 47.9 5.1 | 2238 | 47.5 1.7 | 96 0 | 44 11 | 1.9 | 15.0 0.4 | 1237 | NNW | 335 | 0.21 | 26.89 | 0.102 0.054 | 388 245 | 10 10 |
| Borreo (Soda Canyon) | 4/21/26 | 61.5 0.4 | 1602 | 44.1 0.8 | 2300 | 46.4 0.6 | 98 1 | 46 14 | 1.7 | 15.9 1.8 | 1649 | S | 183 | 0.28 | 26.86 | 0.106 0.058 | 414 265 | 0 10 |
| Wappo Hill Floor | 4/21/26 | 64.4 0.7 | 1519 | 46.7 2.7 | 0045 | 47.5 0.4 | 100 0 | 45 13 | 3.1 | 17.4 1.9 | 1709 | NNW | 340 | 0.19 | 26.10 | 0.111 0.062 | 407 267 | 70 10 |
| Stags Leap Dist (Chimney Rock) | 4/21/26 | 64.8 0.0 | 1525 | 48.0 3.9 | 0053 | 49.6 1.6 | 100 1 | 50 15 | 3.1 | 15.6 0.7 | 1502 | SSW | 201 | 0.21 | 25.45 | 0.104 0.057 | 380 252 | 30 10 |
| Yountville-South (Ranch 87) | 4/21/26 | 64.2 2.3 | 1525 | 47.0 3.4 | 0026 | 48.8 1.1 | 100 0 | 47 12 | 2.8 | 14.3 0.1 | 1553 | W | 261 | 0.18 | 26.71 | 0.110 0.061 | 404 253 | 60 10 |
| Yountville-SE (Ranch 85) | 4/21/26 | 65.9 1.1 | 1449 | 48.2 3.9 | 0038 | 49.0 1.3 | 100 0 | 45 12 | 2.3 | 15.1 2.7 | 1505 | NW | 310 | 0.20 | 25.00 | - | 0 0 | 10 10 |
| Oak Knoll-East (Ranch 53) | 4/21/26 | 64.4 1.9 | 1454 | 47.3 3.0 | 0041 | 48.2 1.8 | 97 1 | 47 15 | 2.6 | 17.0 1.3 | 1640 | W | 263 | 0.24 | 23.56 | 0.110 0.058 | 396 240 | 40 10 |
| Napa-NW (Ranch 54) | 4/21/26 | 65.1 1.8 | 1615 | 46.0 0.1 | 0023 | 49.0 1.8 | 100 0 | 43 10 | 1.7 | 14.1 0.5 | 1754 | SW | 236 | 0.21 | 25.99 | - | 0 0 | 70 10 |
| Napa-North (Ranch 29) | 4/21/26 | 63.8 2.7 | 1529 | 48.6 2.0 | 2315 | 50.1 2.2 | 100 0 | 49 20 | 2.0 | 16.7 2.0 | 1703 | W | 279 | 0.78 | 24.17 | 0.063 0.031 | 211 116 | 40 10 |
| Max | 66.6 | - | 48.6 | - | 50.1 | 100 | 55 | 4.1 | 24.6 | - | - | 0.78 | 31.95 | 0.119 | 477 | - | |
| Avg | - | - | - | - | 48.0 | - | - | 2.6 | - | - | - | - | - | - | - | - | |
| Min | 60.9 | - | 44.1 | - | 46.1 | 91 | 42 | 1.2 | 12.9 | - | - | 0.16 | 22.85 | 0.063 | 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 | 4/21/26 | 56.8 0.5 | 1555 | 45.0 2.4 | 0009 | 45.7 0.7 | 100 0 | 60 20 | 1.9 | 11.7 6.3 | 1019 | S | 185 | 0.20 | 33.33 | 0.135 0.039 | 744 181 | 0 0 |
| Mount George (Napa East) | 4/21/26 | 69.0 4.8 | 1446 | 52.4 5.2 | 2302 | 54.0 5.6 | 99 0 | 55 30 | 1.8 | 15.9 2.3 | 1827 | W | 267 | 0.76 | 15.94 | 0.087 0.027 | 305 126 | 30 10 |
| Napa-East (Palmaz 300') | 4/21/26 | 63.0 1.9 | 1501 | 48.2 2.3 | 2248 | 49.3 2.0 | 100 0 | 50 25 | 2.0 | 15.9 3.0 | 1759 | W | 259 | 0.77 | 22.26 | 0.073 0.016 | 261 110 | 40 10 |
| Napa-East (Palmaz 1200') | 4/21/26 | 56.9 3.2 | 1458 | 43.7 1.3 | 2258 | 43.0 2.4 | 100 0 | 50 37 | 1.8 | 15.6 0.1 | 1717 | NW | 321 | - | - | 0.072 0.018 | 285 140 | 0 0 |
| Napa-East (Palmaz 1400') | 4/21/26 | 56.1 2.1 | 1553 | 43.3 4.3 | 2300 | 47.2 2.1 | 100 0 | 64 34 | 2.2 | 19.5 3.0 | 1719 | W | 259 | 0.72 | 29.60 | 0.062 0.014 | 269 116 | 0 0 |
| Wooden Valley | 4/21/26 | 59.3 1.0 | 1416 | 42.8 1.0 | 0056 | 46.7 1.1 | 97 0 | 53 15 | 2.5 | 17.5 2.1 | 1851 | SSW | 207 | 0.64 | 27.95 | 0.082 0.031 | 320 150 | 0 0 |
| Napa-West Upper (Truchard) | 4/21/26 | 63.4 1.8 | 1444 | 47.6 0.1 | 0031 | 2.2 1.7 | 100 0 | 0 0 | 4.1 | 21.6 1.1 | 1445 | SW | 231 | 0.37 | 23.45 | 0.105 0.020 | 353 191 | 0 0 |
| Napa-West Lower (Truchard) | 4/21/26 | 66.5 0.3 | 1442 | 42.0 0.6 | 0047 | 48.5 1.4 | 100 4 | 48 15 | - | - | - | - | - | - | - | - | 70 10 |
| Napa-South (Toyon Farms) | 4/21/26 | 63.7 2.6 | 1451 | 47.1 0.2 | 0032 | 50.8 0.2 | 100 0 | 61 18 | 3.1 | 17.8 0.3 | 1426 | WSW | 256 | 0.66 | 17.46 | 0.052 0.024 | 198 95 | 10 10 |
| Toyon Remote 1 | 4/21/26 | 66.3 0.7 | 1450 | 40.6 0.4 | 0021 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 4/21/26 | 64.7 2.9 | 1438 | 43.6 0.2 | 0100 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 4/21/26 | 65.8 1.0 | 1451 | 44.3 0.7 | 0033 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 4/21/26 | 64.6 0.8 | 1447 | 45.2 0.8 | 0059 | 48.7 0.7 | 97 1 | 50 14 | 2.2 | 16.6 2.8 | 1653 | W | 269 | 0.28 | 22.76 | 0.097 0.040 | 359 182 | 70 10 |
| Carneros (Saintsbury) | 4/21/26 | 63.2 2.5 | 1355 | 44.4 1.7 | 0047 | 47.7 0.1 | 100 0 | 52 17 | 3.8 | 18.6 0.7 | 1422 | WSW | 249 | 0.35 | 8.52 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 4/21/26 | 64.1 1.5 | 1444 | 46.2 0.7 | 2252 | 44.6 3.7 | - | - | 4.6 | 19.0 1.5 | 1222 | SSW | 196 | 0.48 | 21.76 | 0.102 0.039 | 339 165 | 0 10 |
| Suscol Mtn (Ranch 93) | 4/21/26 | 63.4 1.8 | 1355 | 48.1 1.5 | 2210 | 46.9 1.0 | 99 0 | 53 21 | 7.5 | 30.8 7.9 | 1638 | NW | 321 | 0.46 | 17.58 | - | - | 0 0 |
| Suscol Upper (Ranch 92) | 4/21/26 | 61.3 3.7 | 1311 | 48.3 0.9 | 0018 | 25.2 0.6 | 100 0 | 3 0 | 4.4 | 26.5 2.6 | 1513 | SW | 220 | 0.47 | 21.40 | - | - | 0 0 |
| Stanly (Ranch 45) | 4/21/26 | 63.3 2.2 | 1439 | 45.1 1.5 | 0058 | 47.7 0.1 | 100 2 | 52 17 | 5.0 | 19.1 2.1 | 1425 | SW | 227 | 0.23 | 22.46 | 0.101 0.036 | 367 180 | 40 10 |
| Carneros Upper (Ranch 81) | 4/21/26 | 63.0 2.3 | 1235 | 49.8 1.0 | 2249 | 8.2 13.9 | - | - | 5.8 | 26.3 8.0 | 1717 | WSW | 242 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 4/21/26 | 63.8 3.9 | 1348 | 41.1 0.1 | 0034 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 4/21/26 | 65.3 0.8 | 1458 | 45.3 0.6 | 0055 | 3.1 6.9 | 100 0 | 0 0 | 0.9 | 10.8 1.9 | 1204 | S | 174 | 0.57 | 18.86 | 0.095 0.041 | 324 193 | 0 0 |
| Carneros (Milton Rd) | 4/21/26 | 65.0 0.3 | 1436 | 42.9 2.6 | 0050 | 48.5 0.1 | 95 1 | 48 11 | - | - | - | - | 0.02 | 18.06 | - | - | 0 0 |
| Max | 69.0 | - | 52.4 | - | 54.0 | 100 | 64 | 7.5 | 30.8 | - | - | 0.77 | 33.33 | 0.135 | 744 | - | |
| Avg | - | - | - | - | 39.3 | - | - | 3.3 | - | - | - | - | - | - | - | - | |
| Min | 56.1 | - | 40.6 | - | 2.2 | 95 | 0 | 0.9 | 10.8 | - | - | 0.02 | 8.52 | 0.052 | 198 | - |