| 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 | 9/20/26 | 84.2 2.7 | 1452 | 53.6 1.4 | 0637 | - | - | - | - | - | - | - | 0.00 | 0.82 | - | - | 100 10 |
| Pope Valley (Weeks Lake) | 9/20/26 | 83.3 9.2 | 1532 | 47.5 3.9 | 0710 | 50.2 2.8 | 94 6 | 30 12 | 1.3 0.2 | 11.2 0.7 | 1328 | SE | 141 | 0.00 | 0.03 | 0.102 0.058 | 301 155 | 20 20 |
| Dollarhide Base | 9/20/26 | 86.6 7.5 | 1244 | 52.1 1.4 | 0658 | 53.5 1.0 | 92 6 | 33 10 | 2.3 0.7 | 11.8 5.8 | 1547 | SSE | 164 | 0.00 | 0.00 | 0.117 0.077 | 324 166 | 40 20 |
| Dollarhide 1AS Remote | 9/20/26 | 85.4 8.2 | 1256 | 47.1 3.5 | 0643 | 51.2 2.1 | 89 1 | 32 9 | 1.7 0.7 | 12.1 6.6 | 1310 | SSW | 205 | - | - | - | - | 40 20 |
| Dollarhide 16A Remote | 9/20/26 | 84.5 9.7 | 1451 | 51.9 2.4 | 0650 | 53.2 1.1 | 91 5 | 36 12 | - | - | - | - | - | - | - | - | 40 20 |
| Dollarhide 18A Remote | 9/20/26 | 84.6 8.3 | 1251 | 45.5 3.8 | 0647 | 50.9 2.4 | 94 1 | 34 11 | - | - | - | - | - | - | - | - | 20 20 |
| Hardin Rd (Eakle) | 9/20/26 | 83.9 8.2 | 1242 | 48.8 2.8 | 0708 | - | - | - | - | - | - | - | - | - | - | - | 20 20 |
| Angwin | 9/20/26 | 77.5 5.9 | 1225 | 61.9 3.2 | 2027 | 42.2 0.2 | 69 20 | 22 1 | 2.6 1.4 | 8.5 6.2 | 0908 | NW | 320 | 0.00 | 0.30 | 0.050 0.027 | 0 0 | 90 10 |
| Lower Angwin (Pioneer) | 9/20/26 | 79.1 5.3 | 1119 | 47.5 1.8 | 0410 | - | - | - | 1.5 0.8 | 8.8 3.5 | 1408 | W | 259 | - | - | - | - | 90 10 |
| Las Posadas (Cal Fire) | 9/20/26 | 75.4 11.1 | 1442 | 49.3 0.2 | 0623 | 52.1 0.9 | 98 1 | 46 21 | 7.6 0.1 | 18.5 3.5 | 2046 | SW | 222 | 0.00 | 0.23 | 0.112 0.079 | 309 157 | - |
| Deer Park | 9/20/26 | 72.4 18.9 | 1430 | 52.0 0.9 | 0635 | 52.7 0.6 | 96 1 | 51 30 | 3.2 0.3 | 11.5 0.4 | 1227 | SE | 146 | 0.00 | 0.04 | 0.079 0.045 | 221 100 | 40 10 |
| Lower Chiles Valley (Brown) | 9/20/26 | 75.3 12.1 | 1529 | 51.5 5.6 | 0634 | 52.6 1.1 | 96 4 | 46 19 | 3.4 0.5 | 11.3 2.5 | 1117 | SSW | 207 | 0.00 | 0.14 | 0.100 0.059 | 318 190 | 10 10 |
| Moss Creek Vineyard/Reservior | 9/20/26 | 86.4 6.8 | 1516 | 51.5 2.8 | 0704 | 51.1 1.7 | 91 3 | 29 11 | - | - | - | - | 0.00 | 0.04 | - | - | 20 20 |
| Max | 86.6 | - | 61.9 | - | 53.5 | 98 | 51 | 7.6 | 18.5 | - | - | 0.00 | 0.82 | 0.117 | 324 | - | |
| Avg | - | - | - | - | 51.0 | - | - | 3.0 | - | - | - | - | - | - | - | - | |
| Min | 72.4 | - | 45.5 | - | 42.2 | 69 | 22 | 1.3 | 8.5 | - | - | 0.00 | 0.00 | 0.050 | 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 | 9/20/26 | 79.7 10.9 | 1438 | 50.2 2.1 | 0607 | 54.3 1.9 | 95 2 | 47 20 | - | - | - | - | 0.00 | 0.09 | - | - | 30 20 |
| Diamond Mtn (Schramsberg) | 9/20/26 | 72.7 17.1 | 1520 | 50.9 0.7 | 0654 | 52.5 1.9 | 100 0 | 51 29 | - | - | - | - | 0.00 | 0.13 | - | - | 80 10 |
| Diamond Mtn (McEachran) | 9/20/26 | 74.7 14.4 | 1429 | 51.3 1.4 | 0650 | 52.8 2.1 | 93 3 | 49 28 | - | - | - | - | - | - | - | - | 80 10 |
| St. Helena-North | 9/20/26 | 74.1 16.9 | 1432 | 51.0 0.4 | 0642 | 51.1 1.2 | 87 5 | 46 28 | 3.1 | 12.9 2.0 | 1238 | SE | 124 | 0.00 | 0.11 | 0.100 0.037 | 273 121 | 30 10 |
| St. Helena (NVV Office) | 9/20/26 | 72.6 19.3 | 1543 | 53.3 2.2 | 0608 | - | - | - | 1.3 | 8.5 0.1 | 1341 | E | 94 | 0.00 | 0.04 | - | - | 40 10 |
| Tiara Fria (East St. Helena) | 9/20/26 | 71.0 16.1 | 1519 | 50.9 1.9 | 0413 | 52.7 0.1 | 89 5 | 56 21 | 1.9 | 10.4 3.7 | 1231 | ESE | 117 | 0.00 | 0.02 | - | - | 30 10 |
| Prisoner Winery | 9/20/26 | 73.5 16.4 | 1633 | 49.9 1.4 | 0357 | 52.6 0.4 | 95 2 | 52 19 | 1.1 | 9.3 2.1 | 1352 | E | 89 | 0.00 | 0.06 | 0.014 0.006 | 0 0 | 10 10 |
| Rutherford Hill Estate | 9/20/26 | 71.5 17.8 | 1632 | 53.4 0.1 | 0509 | 53.2 0.9 | 92 8 | 55 23 | 1.4 | 10.3 1.1 | 1206 | SSW | 195 | 0.00 | 0.08 | 0.077 0.047 | 258 136 | 0 0 |
| Rutherford-North (Mee Ln) | 9/20/26 | 72.0 15.1 | 1629 | 48.9 2.0 | 0552 | 51.9 0.4 | 91 2 | 54 19 | 2.6 | 12.7 3.3 | 1317 | SSE | 157 | 0.00 | 0.06 | 0.090 0.049 | 276 123 | 70 10 |
| Rutherford (STS) | 9/20/26 | 73.7 14.7 | 1503 | 48.8 1.4 | 0358 | 54.1 0.8 | 92 0 | 58 18 | 1.8 | 11.1 1.2 | 1401 | E | 101 | 0.00 | 0.05 | 0.093 0.056 | 317 146 | 70 10 |
| Oakville-NE (Ranch 88) | 9/20/26 | 72.6 14.8 | 1528 | 48.9 0.5 | 0413 | 50.9 0.5 | 87 1 | 50 18 | 1.8 | 14.2 1.0 | 1221 | S | 182 | 0.00 | 0.04 | 0.086 0.048 | 264 132 | 100 0 |
| OV561-East | 9/20/26 | 73.6 14.9 | 1624 | 51.0 0.2 | 0401 | - | - | - | - | - | - | - | - | - | - | - | 30 10 |
| Oakville | 9/20/26 | 71.6 12.5 | 1524 | 50.4 0.0 | 0350 | 52.1 0.8 | 90 1 | 54 15 | 3.0 | 15.2 1.2 | 1312 | SE | 144 | 0.00 | 0.03 | 0.093 0.053 | 302 139 | 80 10 |
| OV518-West | 9/20/26 | 70.4 12.4 | 1521 | 50.4 1.0 | 0541 | - | - | - | - | - | - | - | - | - | - | - | 90 10 |
| To Kalon Remote (TKKE) | 9/20/26 | 72.7 14.5 | 1530 | 49.1 0.8 | 0615 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| To Kalon | 9/20/26 | 71.6 13.1 | 1409 | 48.9 1.7 | 0615 | 52.9 0.8 | 94 1 | 55 15 | 2.8 | 14.2 2.8 | 1323 | SE | 136 | 0.00 | 0.00 | 0.091 0.055 | 295 149 | 80 10 |
| To Kalon Remote (TKN5) | 9/20/26 | 72.8 13.6 | 1402 | 49.4 1.4 | 0616 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Yountville (Ranch 67) | 9/20/26 | 69.6 12.4 | 1511 | 50.6 0.7 | 0425 | 51.6 0.5 | 90 0 | 55 15 | 3.6 | 14.0 2.0 | 1204 | SSW | 194 | 0.00 | 0.05 | 0.097 0.054 | 370 123 | 80 10 |
| Stags Leap Dist (Silverado Vineyards) | 9/20/26 | 70.6 11.7 | 1515 | 51.0 1.4 | 0434 | 52.0 0.3 | 92 0 | 54 14 | 2.9 | 15.0 0.2 | 1310 | S | 181 | 0.00 | 0.07 | 0.091 0.053 | 308 122 | 90 20 |
| Borreo (Soda Canyon) | 9/20/26 | 70.0 12.4 | 1508 | 48.9 0.0 | 0431 | 51.7 0.1 | 93 1 | 54 16 | 1.6 | 9.2 0.3 | 1520 | S | 176 | 0.00 | 0.31 | 0.085 0.048 | 316 125 | 100 0 |
| Wappo Hill Floor | 9/20/26 | 70.9 12.3 | 1510 | 50.5 0.3 | 0331 | 53.0 0.5 | 100 0 | 56 15 | 2.7 | 11.2 1.2 | 1231 | SE | 133 | 0.00 | 0.10 | 0.088 0.056 | 294 157 | 90 10 |
| Stags Leap Dist (Chimney Rock) | 9/20/26 | 69.7 12.5 | 1510 | 50.3 1.1 | 0247 | 54.3 0.7 | 96 0 | 63 16 | 2.5 | 11.8 0.4 | 1520 | SSW | 210 | 0.00 | 0.10 | 0.079 0.049 | 272 136 | 90 10 |
| Yountville-South (Ranch 87) | 9/20/26 | 71.9 12.3 | 1507 | 48.9 3.0 | 0611 | 53.2 0.9 | 100 4 | 55 14 | 1.7 | 11.0 1.5 | 1258 | SSE | 164 | 0.00 | 0.09 | 0.080 0.051 | 267 153 | 90 10 |
| Yountville-SE (Ranch 85) | 9/20/26 | 70.4 11.0 | 1645 | 49.4 2.5 | 0411 | 53.5 0.8 | 94 0 | 58 14 | 2.3 | 12.0 1.4 | 1255 | SE | 143 | 0.00 | 0.08 | - | 0 0 | 90 10 |
| Oak Knoll-East (Ranch 53) | 9/20/26 | 71.1 9.7 | 1644 | 49.7 1.9 | 0622 | 52.3 0.5 | 90 1 | 55 11 | 1.9 | 10.1 1.8 | 1514 | SE | 130 | 0.00 | 0.15 | 0.084 0.056 | 292 160 | 90 10 |
| Napa-NW (Ranch 54) | 9/20/26 | 73.1 11.1 | 1501 | 49.0 3.6 | 0621 | 52.2 0.7 | 91 2 | 52 12 | 0.5 | 6.0 0.5 | 1516 | ESE | 116 | 0.00 | 0.18 | - | 0 0 | 90 10 |
| Napa-North (Ranch 29) | 9/20/26 | 71.1 9.5 | 1457 | 52.6 1.8 | 0242 | 54.4 0.2 | 100 0 | 56 11 | 1.7 | 10.2 0.7 | 1632 | S | 180 | 0.00 | 0.10 | 0.053 0.044 | 161 142 | 90 10 |
| Max | 79.7 | - | 53.4 | - | 54.4 | 100 | 63 | 3.6 | 15.2 | - | - | 0.00 | 0.31 | 0.100 | 370 | - | |
| Avg | - | - | - | - | 52.7 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 69.6 | - | 48.8 | - | 50.9 | 87 | 46 | 0.5 | 6.0 | - | - | 0.00 | 0.00 | 0.014 | 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 | 9/20/26 | 68.7 15.3 | 1358 | 50.1 5.1 | 0716 | 51.5 1.3 | 95 11 | 50 24 | 1.7 | 11.1 3.6 | 1743 | SSE | 151 | 0.00 | 0.45 | 0.322 0.123 | - | 90 10 |
| Mount George (Napa East) | 9/20/26 | 80.0 33.7 | 0948 | 50.7 2.8 | 0318 | 54.1 3.5 | 96 3 | 60 20 | 1.4 | 8.6 0.3 | 1232 | WSW | 258 | 0.00 | 0.16 | 0.074 0.064 | 261 189 | 90 10 |
| Napa-East (Palmaz 300') | 9/20/26 | 73.1 14.8 | 1634 | 52.1 0.7 | 0239 | 53.4 0.1 | 100 6 | 52 18 | 0.3 | 7.8 2.0 | 1357 | W | 267 | 0.00 | 0.16 | 0.065 0.064 | 229 182 | 80 10 |
| Napa-East (Palmaz 1200') | 9/14/26 | 80.8 4.1 | 1344 | 47.1 4.1 | 0557 | 46.5 1.6 | 92 8 | 29 22 | 2.4 | 12.0 0.9 | 1614 | SW | 226 | - | - | 0.153 0.004 | 498 20 | 20 20 |
| Napa-East (Palmaz 1400') | 9/20/26 | 68.2 11.1 | 1625 | 50.9 1.1 | 0518 | 53.1 0.5 | 100 0 | 62 18 | 2.3 | 11.1 0.1 | 1337 | WSW | 242 | 0.00 | 0.33 | 0.081 0.056 | 321 156 | 90 10 |
| Wooden Valley | 9/20/26 | 73.1 10.7 | 1501 | 53.1 2.6 | 0728 | 51.6 0.8 | 91 2 | 48 14 | 4.1 | 15.7 2.1 | 0654 | WSW | 242 | 0.00 | 0.04 | 0.099 0.063 | 331 164 | 90 10 |
| Napa-West Upper (Truchard) | 9/20/26 | 70.4 10.6 | 1454 | 49.8 2.5 | 0602 | 25.3 5.5 | 100 0 | 0 0 | 2.2 | 13.0 2.7 | 1508 | SSE | 156 | 0.00 | 0.10 | 0.240 0.037 | 1,253 426 | 80 10 |
| Napa-West Lower (Truchard) | 9/20/26 | 70.4 10.0 | 1448 | 44.9 0.5 | 0358 | 51.3 1.0 | 94 1 | 55 15 | - | - | - | - | - | - | - | - | 80 10 |
| Napa-South (Toyon Farms) | 9/20/26 | 69.6 9.7 | 1449 | 51.0 0.7 | 0542 | 54.8 0.8 | 99 1 | 64 12 | 2.9 | 14.0 0.8 | 1503 | SSE | 160 | 0.00 | 0.07 | 0.040 0.043 | 134 114 | 70 10 |
| Toyon Remote 1 | 9/20/26 | 68.8 9.9 | 1449 | 47.1 0.1 | 0347 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 9/20/26 | 69.4 8.3 | 1450 | 47.7 0.0 | 0354 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 9/20/26 | 68.6 9.9 | 1343 | 46.9 0.7 | 0359 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 9/20/26 | 68.0 10.5 | 1339 | 48.0 1.6 | 0350 | 52.3 0.2 | 95 1 | 61 22 | 2.1 | 11.7 2.0 | 1324 | SSE | 153 | 0.00 | 0.08 | 0.074 0.057 | 254 176 | 90 10 |
| Carneros (Saintsbury) | 9/20/26 | 66.7 9.6 | 1341 | 47.0 0.2 | 0600 | 51.9 0.2 | 100 0 | 63 15 | 3.3 | 14.6 0.2 | 1249 | SSW | 201 | 0.00 | 0.08 | - | - | 70 10 |
| Suscol Lower (Ranch 35) | 9/20/26 | 68.0 10.0 | 1444 | 52.2 1.0 | 0245 | 53.3 0.3 | 100 0 | 60 15 | 3.8 | 13.5 0.7 | 1622 | SSW | 206 | 0.00 | 0.15 | 0.067 0.055 | 213 169 | 70 10 |
| Suscol Mtn (Ranch 93) | 9/20/26 | 70.1 10.1 | 1549 | 51.8 1.8 | 0644 | 53.4 0.6 | 99 1 | 63 21 | 4.0 | 12.8 1.2 | 1314 | WNW | 296 | 0.00 | 0.33 | - | - | 60 10 |
| Suscol Upper (Ranch 92) | 9/20/26 | 66.4 12.4 | 1550 | 52.4 2.0 | 0723 | -0.8 24.3 | 100 0 | 0 0 | 2.0 | 12.0 0.9 | 1404 | WSW | 238 | 0.00 | 0.15 | - | - | 20 10 |
| Stanly (Ranch 45) | 9/20/26 | 66.8 9.6 | 1551 | 49.7 1.9 | 0316 | 52.6 0.1 | 92 2 | 64 15 | 4.0 | 15.6 2.1 | 1321 | W | 275 | 0.00 | 0.15 | 0.070 0.058 | 230 190 | 80 10 |
| Carneros Upper (Ranch 81) | 9/20/26 | 67.8 12.0 | 1340 | 52.5 1.4 | 0522 | 39.0 10.3 | - | - | 4.1 | 17.2 7.5 | 1504 | S | 184 | - | - | - | - | 70 10 |
| Carneros (Mitsuko) | 9/20/26 | 67.8 9.2 | 1452 | 45.8 1.1 | 0544 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Carneros Lower (Ranch 81) | 9/20/26 | 67.8 12.0 | 1452 | 51.1 3.5 | 0536 | 53.2 5.4 | 94 6 | 63 62 | 1.4 | 12.6 0.1 | 1455 | SSE | 147 | 0.00 | 0.01 | 0.013 0.006 | 7 5 | 70 10 |
| Carneros (Milton Rd) | 9/20/26 | 67.1 9.0 | 1523 | 49.4 1.8 | 0308 | 53.1 0.8 | 92 1 | 64 13 | - | - | - | - | 0.00 | 0.00 | - | - | 70 10 |
| Max | 80.0 | - | 53.1 | - | 54.8 | 100 | 64 | 4.1 | 17.2 | - | - | 0.00 | 0.45 | 0.322 | 1,253 | - | |
| Avg | - | - | - | - | 47.2 | - | - | 2.6 | - | - | - | - | - | - | - | - | |
| Min | 66.4 | - | 44.9 | - | -0.8 | 91 | 0 | 0.3 | 7.8 | - | - | 0.00 | 0.00 | 0.013 | 7 | - |