| 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 | 5/4/26 | 60.6 0.2 | 1123 | 41.4 3.4 | 0447 | - | - | - | - | - | - | - | 0.40 | 50.03 | - | - | 10 10 |
| Pope Valley (Weeks Lake) | 5/4/26 | 67.7 0.2 | 1138 | 41.3 4.1 | 0250 | 47.8 0.8 | 100 0 | 42 5 | 1.2 | 10.3 4.4 | 1308 | S | 181 | 0.59 | 26.22 | 0.066 0.061 | 224 214 | 50 10 |
| Dollarhide Base | 5/4/26 | 67.8 1.4 | 1102 | 47.6 2.6 | 0622 | 50.3 0.6 | 99 4 | 54 1 | 2.4 | 13.0 6.6 | 1204 | S | 182 | 0.48 | 23.12 | 0.073 0.068 | 251 240 | 60 10 |
| Dollarhide 1AS Remote | 5/4/26 | 67.0 1.4 | 1131 | 44.7 4.8 | 0623 | 49.1 0.0 | 94 2 | 54 1 | 1.7 | 11.5 5.8 | 1203 | S | 182 | - | - | - | - | 50 10 |
| Dollarhide 17B Remote | 5/4/26 | 68.1 1.5 | 1133 | 44.2 4.0 | 0446 | 49.9 0.2 | 100 1 | 51 1 | - | - | - | - | - | - | - | - | 50 10 |
| Dollarhide 18A Remote | 5/4/26 | 64.1 3.1 | 1142 | 42.0 6.3 | 0613 | 48.9 0.1 | 100 6 | 56 2 | - | - | - | - | - | - | - | - | 30 10 |
| Angwin | 5/4/26 | 57.8 0.4 | 1317 | 44.6 0.6 | 0609 | 45.6 0.1 | 100 0 | 57 6 | 2.8 | 15.0 3.9 | 1820 | W | 260 | 0.62 | 45.10 | 0.007 0.005 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 5/4/26 | 59.8 0.6 | 1128 | 44.0 2.3 | 0435 | - | - | - | 2.7 | 13.5 2.3 | 2003 | W | 273 | - | - | - | - | 10 10 |
| Deer Park | 5/4/26 | 65.0 1.2 | 1315 | 46.6 3.6 | 0452 | 48.6 1.5 | 97 8 | 49 0 | 2.7 | 13.4 1.0 | 1117 | WNW | 295 | 0.52 | 28.71 | 0.058 0.040 | 188 107 | 0 10 |
| Lower Chiles Valley (Brown) | 5/4/26 | 62.4 2.6 | 1115 | 43.5 4.6 | 0257 | 47.3 0.5 | 97 5 | 53 2 | 2.6 | 10.5 6.3 | 1300 | WNW | 282 | 0.59 | 25.84 | 0.063 0.058 | 216 225 | 30 10 |
| Moss Creek Vineyard/Reservior | 5/4/26 | 64.5 4.4 | 1115 | 43.2 5.2 | 0617 | 47.1 0.3 | 100 6 | 48 5 | - | - | - | - | 0.54 | 27.04 | - | - | 30 10 |
| Max | 68.1 | - | 47.6 | - | 50.3 | 100 | 57 | 2.8 | 15.0 | - | - | 0.62 | 50.03 | 0.073 | 251 | - | |
| Avg | - | - | - | - | 48.3 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 57.8 | - | 41.3 | - | 45.6 | 94 | 42 | 1.2 | 10.3 | - | - | 0.40 | 23.12 | 0.007 | 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 | 5/4/26 | 70.2 13.5 | 1308 | 48.3 2.7 | 0409 | 51.0 1.6 | 99 0 | 49 6 | - | - | - | - | 0.45 | 32.77 | - | - | 10 10 |
| Diamond Mtn (Schramsberg) | 5/4/26 | 64.2 0.8 | 1314 | 47.3 1.8 | 0615 | 49.0 2.1 | 100 8 | 50 0 | - | - | - | - | 0.47 | 31.19 | - | - | 0 10 |
| Diamond Mtn (McEachran) | 5/4/26 | 64.6 0.0 | 1143 | 47.4 3.6 | 0451 | 49.0 2.0 | 98 9 | 49 2 | - | - | - | - | - | - | - | - | 0 10 |
| St. Helena-North | 5/4/26 | 67.2 0.7 | 1113 | 46.4 5.6 | 0459 | 48.7 3.0 | 100 22 | 43 1 | 1.0 | 9.4 6.2 | 1111 | NNW | 338 | 0.56 | 31.02 | 0.060 0.044 | 199 142 | 50 10 |
| St. Helena (NVV Office) | 5/4/26 | 70.1 0.6 | 1257 | 46.0 6.5 | 0612 | - | - | - | 0.8 | 8.6 3.4 | 1613 | W | 274 | 0.50 | 28.45 | - | - | 70 10 |
| Tiara Fria (East St. Helena) | 5/4/26 | 66.9 1.0 | 1324 | 45.7 5.7 | 0543 | 48.9 1.5 | 96 10 | 46 0 | 1.6 | 9.4 5.8 | 1416 | SW | 236 | 0.48 | 26.43 | - | - | 20 10 |
| Rutherford Hill Estate | 5/4/26 | 66.8 2.4 | 1321 | 46.7 4.0 | 0605 | 49.3 1.6 | 100 13 | 49 3 | 1.1 | 8.1 5.5 | 1431 | SSW | 192 | 0.49 | 24.99 | 0.061 0.049 | 212 166 | 20 10 |
| Rutherford-North (Mee Ln) | 5/4/26 | 68.8 1.0 | 1316 | 41.3 6.6 | 0619 | 47.3 0.0 | 96 5 | 43 0 | 1.6 | 9.4 5.7 | 1254 | ESE | 107 | 0.52 | 24.50 | 0.066 0.053 | 217 168 | 30 10 |
| Rutherford (STS) | 5/4/26 | 68.0 1.8 | 1245 | 42.9 5.2 | 0433 | 48.6 0.9 | 92 0 | 51 1 | 1.6 | 10.4 5.9 | 1628 | WNW | 298 | 0.45 | 25.71 | 0.073 0.060 | 251 216 | 60 10 |
| Oakville-NE (Ranch 88) | 5/4/26 | 68.7 1.7 | 1304 | 42.6 5.8 | 0516 | 47.3 1.1 | 99 11 | 38 2 | 0.6 | 10.0 5.3 | 1258 | NW | 304 | 0.51 | 24.90 | 0.068 0.058 | 236 175 | 0 0 |
| OV561-East | 5/4/26 | 66.3 3.2 | 1304 | 44.2 6.6 | 0516 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| Oakville | 5/4/26 | 66.8 1.4 | 1311 | 43.5 6.3 | 0603 | 47.8 0.8 | 97 9 | 40 4 | 2.0 | 11.4 5.0 | 1542 | W | 278 | 0.39 | 25.35 | 0.078 0.053 | 262 175 | 0 10 |
| OV518-West | 5/4/26 | 66.6 0.9 | 1258 | 43.6 5.8 | 0617 | - | - | - | - | - | - | - | - | - | - | - | 20 10 |
| To Kalon Remote (TKKE) | 5/4/26 | 68.6 1.2 | 1313 | 42.9 6.0 | 0609 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| To Kalon | 5/4/26 | 66.8 2.1 | 1312 | 43.6 6.7 | 0616 | 48.6 0.5 | 98 9 | 45 3 | 1.8 | 10.0 3.7 | 1606 | WNW | 291 | 0.53 | 27.68 | 0.068 0.051 | 230 162 | 0 10 |
| To Kalon Remote (TKN5) | 5/4/26 | 67.1 2.1 | 1311 | 43.6 7.3 | 0625 | - | - | - | - | - | - | - | - | - | - | - | 20 10 |
| Yountville (Ranch 67) | 5/4/26 | 65.2 2.8 | 1257 | 43.2 6.2 | 0525 | 47.1 1.0 | 96 8 | 42 1 | 1.5 | 9.8 5.2 | 1503 | WSW | 246 | 0.53 | 23.59 | 0.084 0.042 | 330 111 | 0 10 |
| Stags Leap Dist (Silverado Vineyards) | 5/4/26 | 64.9 3.1 | 1247 | 43.5 6.5 | 0624 | 47.4 0.5 | 96 8 | 47 4 | 1.2 | 9.4 3.5 | 1343 | S | 171 | 0.51 | 27.60 | 0.075 0.037 | 271 118 | 0 0 |
| Borreo (Soda Canyon) | 5/4/26 | 61.8 4.4 | 1245 | 41.6 4.7 | 0529 | 46.4 0.0 | 98 4 | 52 5 | 1.3 | 11.3 0.1 | 1057 | NW | 326 | 0.48 | 27.50 | 0.073 0.044 | 269 155 | 0 0 |
| Wappo Hill Floor | 5/4/26 | 66.3 2.9 | 1347 | 42.2 6.8 | 0624 | 48.2 0.6 | 100 11 | 48 5 | 1.8 | 10.4 3.8 | 1631 | N | 351 | 0.46 | 26.72 | 0.070 0.061 | 233 200 | 30 10 |
| Stags Leap Dist (Chimney Rock) | 5/4/26 | 65.2 3.1 | 1333 | 42.8 6.6 | 0615 | 49.3 0.2 | 100 7 | 54 2 | 1.7 | 10.2 4.8 | 1637 | N | 354 | 0.50 | 26.13 | 0.065 0.046 | 223 144 | 0 0 |
| Yountville-South (Ranch 87) | 5/4/26 | 65.5 3.8 | 1333 | 43.5 6.0 | 0455 | 49.2 1.0 | 100 8 | 49 6 | 1.2 | 10.0 3.2 | 1450 | SW | 220 | 0.47 | 27.37 | 0.068 0.055 | 237 180 | 50 10 |
| Yountville-SE (Ranch 85) | 5/4/26 | 65.5 4.4 | 1326 | 43.8 6.6 | 0608 | 48.9 0.5 | 100 9 | 48 4 | 1.2 | 7.9 2.8 | 1637 | NNE | 25 | 0.49 | 25.68 | - | 0 0 | 0 10 |
| Oak Knoll-East (Ranch 53) | 5/4/26 | 65.5 3.3 | 1329 | 43.8 5.3 | 0527 | 47.9 0.9 | 95 5 | 42 0 | 1.2 | 10.0 2.8 | 1402 | S | 182 | 0.51 | 24.28 | 0.078 0.051 | 272 160 | 30 10 |
| Napa-NW (Ranch 54) | 5/4/26 | 69.0 0.8 | 1149 | 45.3 3.8 | 0516 | 48.6 1.4 | 100 10 | 40 3 | 0.7 | 9.7 0.8 | 1356 | SW | 216 | 0.53 | 26.76 | - | 0 0 | 60 10 |
| Napa-North (Ranch 29) | 5/4/26 | 64.7 1.9 | 1237 | 44.4 5.6 | 0632 | 49.1 1.5 | 100 1 | 45 3 | 1.1 | 11.8 1.1 | 1424 | SSE | 164 | 0.49 | 25.16 | 0.041 0.044 | 106 128 | 0 0 |
| Max | 70.2 | - | 48.3 | - | 51.0 | 100 | 54 | 2.0 | 11.8 | - | - | 0.56 | 32.77 | 0.084 | 330 | - | |
| Avg | - | - | - | - | 48.5 | - | - | 1.3 | - | - | - | - | - | - | - | - | |
| Min | 61.8 | - | 41.3 | - | 46.4 | 92 | 38 | 0.6 | 7.9 | - | - | 0.39 | 23.59 | 0.041 | 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 | 5/4/26 | 61.4 0.4 | 1051 | 45.9 1.1 | 0538 | 46.1 0.3 | 100 0 | 52 4 | 1.1 | 9.4 2.7 | 1058 | NNE | 12 | 0.54 | 34.16 | 0.124 0.010 | 612 47 | 0 0 |
| Mount George (Napa East) | 5/4/26 | 66.2 3.6 | 0105 | 44.4 14.0 | 0554 | 50.0 4.7 | 100 0 | 48 4 | 0.9 | 8.8 3.8 | 1529 | SW | 227 | 0.47 | 17.01 | 0.067 0.037 | 236 96 | 0 0 |
| Napa-East (Palmaz 300') | 5/4/26 | 64.3 3.2 | 1131 | 44.4 4.7 | 0543 | 48.4 0.6 | 100 7 | 49 1 | 1.2 | 9.0 4.2 | 1547 | SW | 225 | 0.45 | 23.26 | 0.058 0.038 | 186 110 | 0 0 |
| Napa-East (Palmaz 1200') | 5/4/26 | 58.4 3.6 | 1321 | 41.0 3.6 | 0605 | 43.0 1.3 | 100 0 | 11 4 | 1.6 | 9.0 4.6 | 1029 | NW | 316 | - | - | 0.059 0.035 | 219 123 | 0 0 |
| Napa-East (Palmaz 1400') | 5/4/26 | 59.1 2.8 | 1119 | 43.6 2.3 | 0539 | 47.3 0.1 | 100 0 | 63 4 | 2.1 | 10.3 7.8 | 1909 | WSW | 244 | 0.51 | 30.77 | 0.060 0.037 | 237 140 | 0 0 |
| Wooden Valley | 5/4/26 | 60.6 5.1 | 1123 | 43.2 6.6 | 0610 | 46.1 0.2 | 96 8 | 53 3 | 2.3 | 12.4 3.8 | 1538 | SW | 216 | 0.52 | 29.09 | 0.066 0.070 | 230 277 | 0 10 |
| Napa-West Upper (Truchard) | 5/4/26 | 64.9 2.5 | 1140 | 45.6 4.4 | 0647 | 3.0 45.5 | 100 0 | 0 48 | 2.5 | 14.4 0.4 | 1437 | SSW | 203 | 0.45 | 24.38 | 0.080 0.026 | 239 90 | 0 0 |
| Napa-West Lower (Truchard) | 5/4/26 | 68.9 0.1 | 1147 | 40.7 5.3 | 0623 | 46.7 1.2 | 100 8 | 42 3 | - | - | - | - | - | - | - | - | 60 10 |
| Napa-South (Toyon Farms) | 5/4/26 | 65.0 1.5 | 1138 | 46.6 3.3 | 0640 | 50.0 0.4 | 100 6 | 50 9 | 1.6 | 11.8 1.3 | 1552 | SW | 226 | 0.43 | 18.32 | 0.034 0.021 | 102 59 | 0 0 |
| Toyon Remote 1 | 5/4/26 | 69.6 0.3 | 1145 | 39.4 4.9 | 0617 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 5/4/26 | 66.6 0.6 | 1139 | 41.2 6.4 | 0607 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 5/4/26 | 68.5 1.0 | 1132 | 42.7 5.0 | 0616 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 5/4/26 | 65.7 1.5 | 1227 | 43.8 6.3 | 0518 | 47.7 0.2 | 97 8 | 40 10 | 1.9 | 12.6 0.9 | 1545 | WNW | 297 | 0.43 | 23.55 | 0.080 0.016 | 271 45 | 0 0 |
| Carneros (Saintsbury) | 5/4/26 | 65.4 1.0 | 1141 | 43.1 5.7 | 0610 | 47.8 0.3 | 100 7 | 44 7 | 3.2 | 14.3 0.7 | 1559 | W | 274 | 0.00 | 8.68 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 5/4/26 | 64.6 2.6 | 1137 | 45.1 2.9 | 0603 | 48.4 0.5 | - | - | 3.0 | 13.8 2.7 | 1316 | S | 185 | 0.41 | 22.82 | 0.078 0.027 | 248 66 | 0 0 |
| Suscol Mtn (Ranch 93) | 5/4/26 | 60.0 7.8 | 1326 | 47.3 1.5 | 0544 | 47.3 0.0 | 99 4 | 51 3 | 6.4 | 20.5 3.1 | 1612 | NW | 306 | 0.53 | 18.57 | - | - | 0 0 |
| Suscol Upper (Ranch 92) | 5/4/26 | 61.0 3.6 | 1331 | 48.0 1.5 | 0537 | 24.7 22.9 | 100 7 | 3 51 | 2.3 | 15.5 7.0 | 1623 | W | 267 | 0.35 | 22.33 | - | - | 0 0 |
| Stanly (Ranch 45) | 5/4/26 | 65.7 2.1 | 1151 | 42.8 6.5 | 0607 | 47.6 0.5 | 97 7 | 43 6 | 3.6 | 13.9 3.9 | 1547 | W | 278 | 0.00 | 22.49 | 0.090 0.018 | 285 33 | 0 0 |
| Carneros Upper (Ranch 81) | 5/4/26 | 64.5 0.2 | 1151 | 46.7 2.9 | 0635 | 28.6 19.3 | - | - | 5.9 | 17.2 2.0 | 1442 | W | 261 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 5/4/26 | 65.5 1.0 | 1152 | 40.2 6.9 | 0617 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 5/4/26 | 68.5 0.9 | 1235 | 42.6 6.4 | 0627 | 33.4 15.8 | 100 8 | 0 47 | - | 8.6 0.8 | 1519 | NW | 321 | 0.04 | 19.33 | 0.071 0.006 | 247 9 | 0 0 |
| Carneros (Milton Rd) | 5/4/26 | 65.3 2.0 | 1204 | 42.1 6.8 | 0615 | 48.6 0.1 | 95 3 | 44 9 | - | - | - | - | 0.00 | 18.07 | - | - | 0 0 |
| Max | 69.6 | - | 48.0 | - | 50.0 | 100 | 63 | 6.4 | 20.5 | - | - | 0.54 | 34.16 | 0.124 | 612 | - | |
| Avg | - | - | - | - | 41.9 | - | - | 2.6 | - | - | - | - | - | - | - | - | |
| Min | 58.4 | - | 39.4 | - | 3.0 | 95 | 0 | 0.9 | 8.6 | - | - | 0.00 | 8.68 | 0.034 | 102 | - |