| 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 | 12/13/25 | 68.3 3.7 | 1428 | 40.1 3.4 | 0708 | - | - | - | - | - | - | - | 0.00 | 11.97 | - | - | - |
| Pope Valley (Weeks Lake) | 12/13/25 | 71.9 3.0 | 1440 | 30.0 0.1 | 2359 | 36.2 1.6 | 100 0 | 30 6 | 0.8 | 4.6 0.2 | 1120 | ESE | 110 | 0.01 | 5.59 | 0.038 0.001 | 193 9 | 0 0 |
| Whiskey River Winery | 12/13/25 | 52.8 3.6 | 1548 | 37.3 0.3 | 0759 | 36.3 2.0 | 88 11 | 68 4 | 0.0 | 0.0 2.4 | 0001 | SE | 128 | 0.00 | 7.07 | - | - | - |
| Dollarhide Base | 12/13/25 | 66.3 0.8 | 1503 | 33.6 2.7 | 0806 | 40.1 0.7 | 100 0 | 46 12 | 1.2 | 6.3 2.8 | 2325 | W | 267 | 0.01 | 4.89 | 0.044 0.003 | 212 5 | - |
| Dollarhide 1AS Remote | 12/13/25 | 71.2 1.3 | 1443 | 29.7 0.3 | 0001 | 36.7 1.6 | 95 0 | 42 10 | 0.9 | 5.4 0.0 | 1520 | ESE | 116 | - | - | - | - | - |
| Dollarhide 17B Remote | 12/13/25 | 69.5 3.0 | 1446 | 30.5 1.5 | 0153 | 38.9 1.7 | 100 0 | 47 11 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 12/13/25 | 69.1 3.9 | 1428 | 29.9 1.1 | 2314 | 37.3 1.6 | 100 0 | 43 11 | - | - | - | - | - | - | - | - | - |
| Angwin | 12/13/25 | 61.4 2.9 | 1316 | 52.4 0.7 | 0710 | 27.8 2.4 | 40 6 | 27 10 | 5.8 | 11.5 6.7 | 0027 | NNW | 345 | 0.00 | 10.82 | 0.075 0.044 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 12/13/25 | 65.0 1.8 | 1225 | 38.0 7.1 | 2356 | - | - | - | 3.0 | 8.7 7.2 | 0856 | ENE | 62 | - | - | - | - | - |
| Deer Park | 12/13/25 | 53.8 4.7 | 1544 | 30.4 1.4 | 0629 | 37.8 2.2 | 99 0 | 64 2 | 1.6 | 9.3 2.6 | 2315 | NNW | 342 | 0.01 | 6.27 | 0.031 0.001 | 172 7 | - |
| Lower Chiles Valley (Brown) | 12/13/25 | 63.2 8.4 | 1311 | 29.4 1.2 | 0446 | 36.0 1.0 | 100 0 | 42 16 | 2.9 | 11.1 0.5 | 1237 | NE | 56 | 0.02 | 1.50 | 0.054 0.012 | 239 6 | 0 0 |
| Moss Creek Vineyard/Reservior | 12/13/25 | 60.5 1.2 | 1418 | 28.5 3.8 | 0638 | 36.6 2.9 | 100 0 | 49 1 | - | - | - | - | 0.01 | 6.19 | - | - | - |
| Max | 71.9 | - | 52.4 | - | 40.1 | 100 | 68 | 5.8 | 11.5 | - | - | 0.02 | 11.97 | 0.075 | 239 | - | |
| Avg | - | - | - | - | 36.4 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 52.8 | - | 28.5 | - | 27.8 | 40 | 27 | 0.0 | 0.0 | - | - | 0.00 | 1.50 | 0.031 | 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 | 12/13/25 | 50.5 3.3 | 1442 | 34.6 0.4 | 0736 | 39.4 1.5 | 100 0 | 79 3 | - | - | - | - | 0.00 | 7.39 | - | - | - |
| Fotsch (Maple Lane) | 12/13/25 | 51.6 3.2 | 1522 | 33.8 1.4 | 1915 | 37.5 1.1 | 98 0 | 69 5 | 1.9 | 10.4 2.1 | 1308 | ESE | 111 | 0.00 | 6.47 | - | - | - |
| Diamond Mtn (Schramsberg) | 12/13/25 | 51.1 1.9 | 1235 | 31.8 1.1 | 0650 | 38.8 1.7 | 100 0 | 70 7 | - | - | - | - | 0.00 | 6.82 | - | - | - |
| Diamond Mtn (McEachran) | 12/13/25 | 46.8 6.9 | 1414 | 32.0 2.0 | 0736 | 38.3 2.0 | 100 0 | 83 13 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 12/13/25 | 52.7 2.7 | 1504 | 34.1 1.9 | 0823 | 36.9 1.8 | 95 0 | 66 2 | 1.6 | 9.2 0.2 | 1302 | S | 175 | 0.01 | 6.02 | 0.020 0.005 | 115 15 | - |
| St. Helena (NVV Office) | 12/13/25 | 53.7 2.8 | 1524 | 34.3 0.6 | 0805 | - | - | - | 0.6 | 6.4 1.0 | 2310 | WNW | 290 | 0.00 | 5.88 | - | - | - |
| Tiara Fria (East St. Helena) | 12/13/25 | 53.5 5.2 | 1550 | 33.2 0.9 | 2131 | 36.9 1.5 | 97 0 | 70 7 | 1.1 | 6.5 0.3 | 2315 | W | 278 | 0.01 | 5.72 | - | - | - |
| Rutherford Hill Estate | 12/13/25 | 55.7 4.3 | 1604 | 33.1 2.7 | 0714 | 38.1 2.3 | 100 0 | 64 5 | 0.8 | 5.5 0.4 | 1328 | S | 178 | 0.00 | 4.02 | 0.022 0.003 | 133 11 | 0 0 |
| Rutherford-North (Mee Ln) | 12/13/25 | 53.4 6.0 | 1609 | 29.2 1.6 | 0800 | 33.2 1.3 | 98 0 | 69 7 | 1.0 | 7.7 1.5 | 1248 | SE | 136 | 0.01 | 5.12 | 0.019 0.003 | 126 10 | 0 0 |
| Rutherford (STS) | 12/13/25 | 56.9 4.5 | 1531 | 32.5 0.7 | 2112 | 35.6 1.5 | 91 0 | 70 7 | 0.9 | 6.1 0.7 | 1241 | E | 94 | 0.01 | 5.77 | 0.021 0.004 | 111 17 | - |
| Oakville-NE (Ranch 88) | 12/13/25 | 54.5 3.4 | 1502 | 31.6 0.3 | 2051 | 36.2 1.1 | 97 0 | 62 4 | 0.7 | 5.9 1.1 | 1212 | S | 171 | 0.01 | 5.57 | 0.025 0.004 | 139 11 | 0 0 |
| OV561-East | 12/13/25 | 58.1 3.8 | 1519 | 34.0 2.3 | 2054 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 12/13/25 | 52.7 4.8 | 1519 | 32.9 0.2 | 2104 | 37.1 1.2 | 98 0 | 67 7 | 1.4 | 8.5 0.1 | 1226 | SE | 136 | 0.01 | 5.48 | 0.025 0.006 | 145 18 | - |
| OV518-West | 12/13/25 | 52.3 4.1 | 1505 | 33.4 0.3 | 2103 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 12/13/25 | 54.7 4.2 | 1502 | 32.8 1.4 | 2035 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 12/13/25 | 54.2 3.4 | 1520 | 33.9 1.6 | 0833 | 38.0 1.2 | 100 0 | 69 5 | 1.3 | 6.5 0.7 | 1218 | SE | 140 | 0.01 | 5.88 | 0.022 0.005 | 122 23 | - |
| To Kalon Remote (TKN5) | 12/13/25 | 55.8 3.5 | 1504 | 33.0 0.2 | 2035 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 12/13/25 | 52.6 3.9 | 1453 | 32.8 1.0 | 2102 | 36.8 0.7 | 98 0 | 65 6 | 1.5 | 9.0 0.5 | 1308 | SSW | 193 | 0.00 | 4.76 | 0.031 0.006 | 265 16 | - |
| Stags Leap Dist (Silverado Vineyards) | 12/13/25 | 53.3 3.1 | 1500 | 32.4 1.2 | 2058 | 36.7 0.7 | 98 0 | 64 5 | 1.2 | 8.2 1.2 | 1602 | SE | 138 | 0.01 | 6.03 | 0.026 0.006 | 135 19 | - |
| Borreo (Soda Canyon) | 12/13/25 | 52.8 3.3 | 1530 | 30.2 1.3 | 0246 | 34.8 2.0 | 99 0 | 65 4 | 1.1 | 6.3 0.8 | 1209 | S | 180 | 0.00 | 6.85 | 0.031 0.005 | 183 16 | - |
| Wappo Hill Floor | 12/13/25 | 53.5 3.9 | 1442 | 34.2 2.8 | 2047 | 38.0 0.8 | 100 0 | 66 6 | 1.8 | 7.4 0.9 | 1323 | S | 176 | 0.00 | 5.88 | 0.027 0.006 | 153 15 | - |
| Stags Leap Dist (Chimney Rock) | 12/13/25 | 53.0 5.5 | 1431 | 34.6 3.3 | 2025 | - | - | - | 1.7 | 8.1 0.0 | 1322 | SSW | 208 | 0.01 | 6.25 | 0.033 0.003 | 136 14 | 0 0 |
| Yountville-South (Ranch 87) | 12/13/25 | 53.9 3.4 | 1416 | 33.4 1.4 | 2023 | 38.9 0.6 | 100 0 | 66 5 | 1.2 | 7.3 0.8 | 1257 | ESE | 120 | 0.01 | 5.92 | 0.029 0.005 | 157 15 | - |
| Yountville-SE (Ranch 85) | 12/13/25 | 53.4 3.2 | 1531 | 36.3 2.9 | 0424 | 38.9 0.7 | 100 0 | 67 4 | 1.6 | 9.6 1.8 | 1255 | SW | 227 | 0.01 | 5.91 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 12/13/25 | 53.2 3.9 | 1430 | 35.6 2.5 | 1948 | 38.7 0.3 | 98 1 | 64 6 | 1.6 | 7.6 0.9 | 1309 | SE | 127 | 0.00 | 6.43 | 0.029 0.005 | 156 15 | - |
| Napa-NW (Ranch 54) | 12/13/25 | 51.5 5.5 | 1356 | 34.4 1.2 | 2015 | 38.8 0.6 | 100 0 | 68 9 | 1.5 | 7.8 0.3 | 1356 | S | 173 | 0.00 | 6.63 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 12/13/25 | 54.1 4.0 | 1403 | 36.9 1.1 | 0740 | 39.7 0.7 | 100 0 | 61 4 | 1.0 | 8.1 1.4 | 1207 | SW | 214 | 0.00 | 6.44 | 0.024 0.003 | 118 11 | - |
| Max | 58.1 | - | 36.9 | - | 39.7 | 100 | 83 | 1.9 | 10.4 | - | - | 0.01 | 7.39 | 0.033 | 265 | - | |
| Avg | - | - | - | - | 37.5 | - | - | 1.3 | - | - | - | - | - | - | - | - | |
| Min | 46.8 | - | 29.2 | - | 33.2 | 91 | 61 | 0.6 | 5.5 | - | - | 0.00 | 4.02 | 0.019 | 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 | 12/13/25 | 65.4 3.1 | 1133 | 50.5 0.5 | 2359 | 32.0 3.4 | 66 2 | 25 4 | 1.3 | 7.1 3.0 | 1004 | NNE | 16 | 0.00 | 8.39 | 0.050 0.012 | 145 3 | 0 0 |
| Mount George (Napa East) | 12/13/25 | 56.6 8.0 | 1438 | 36.8 2.6 | 1951 | 41.2 0.2 | 100 0 | 68 5 | 1.0 | 5.8 1.3 | 1244 | W | 263 | 0.00 | 2.99 | 0.031 0.010 | 171 32 | - |
| Napa-East (Palmaz 300') | 12/13/25 | 54.5 3.5 | 1451 | 34.7 0.9 | 0747 | 38.4 0.8 | 100 0 | 62 6 | 1.1 | 5.8 1.5 | 1409 | W | 263 | 0.00 | 6.01 | 0.026 0.010 | 143 41 | - |
| Napa-East (Palmaz 1200') | 12/13/25 | 62.6 0.9 | 1139 | 36.5 0.0 | 0001 | 36.3 0.6 | 100 0 | 4 0 | 2.7 | 11.2 4.2 | 0925 | NE | 51 | - | - | 0.050 0.008 | 225 4 | - |
| Napa-East (Palmaz 1400') | 12/13/25 | 62.4 1.4 | 1231 | 35.8 1.7 | 0009 | 36.5 0.1 | 97 3 | 38 6 | 4.8 | 12.5 1.2 | 0442 | ESE | 105 | 0.00 | 8.11 | 0.065 0.014 | 231 6 | - |
| Wooden Valley | 4/30/25 | 78.8 0.4 | 1303 | 51.0 7.3 | 0600 | 49.9 1.6 | 90 5 | 34 2 | 4.0 | 16.6 0.3 | 0031 | SW | 220 | 0.00 | 30.39 | 0.212 0.008 | 668 2 | 0 0 |
| Napa-West Upper (Truchard) | 12/13/25 | 52.0 2.9 | 1503 | 37.4 1.0 | 0723 | - | - | - | 2.5 | 11.3 0.2 | 1208 | SSW | 192 | 0.01 | 6.10 | 0.041 0.001 | 153 29 | 0 0 |
| Napa-West Lower (Truchard) | 12/13/25 | 51.9 3.6 | 1459 | 38.0 4.7 | 0756 | 39.4 0.0 | 100 0 | 69 5 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 12/13/25 | 51.9 2.2 | 1438 | 38.0 0.8 | 0843 | 40.8 1.2 | 100 0 | 75 3 | 1.9 | 7.3 1.5 | 1526 | SW | 236 | 0.00 | 2.35 | 0.015 0.006 | 91 24 | 0 0 |
| Toyon Remote 1 | 12/13/25 | 51.6 4.1 | 1342 | 37.7 1.5 | 1806 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 12/13/25 | 51.3 2.3 | 1453 | 38.4 0.6 | 0642 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 12/13/25 | 53.5 2.7 | 1422 | 37.8 1.0 | 1814 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 12/13/25 | 51.2 2.6 | 1454 | 36.9 0.5 | 0347 | 39.0 1.1 | 98 0 | 69 3 | 1.8 | 8.6 0.6 | 1150 | SSW | 213 | 0.00 | 5.78 | 0.029 0.006 | 163 19 | - |
| Carneros (Saintsbury) | 12/13/25 | 50.8 2.0 | 1409 | 34.1 2.3 | 0830 | 37.8 1.3 | 100 0 | 72 3 | 2.4 | 8.1 0.2 | 1558 | SSW | 211 | 0.00 | 1.64 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 12/13/25 | 52.6 3.9 | 1354 | 32.8 1.8 | 2006 | 39.1 1.2 | - | - | 1.7 | 7.7 0.3 | 1429 | S | 186 | 0.00 | 5.63 | 0.028 0.006 | 159 20 | - |
| Suscol Mtn (Ranch 93) | 12/13/25 | 52.8 2.4 | 1413 | 33.2 1.6 | 0650 | 38.2 1.0 | 100 0 | 75 15 | 2.8 | 13.4 6.9 | 1449 | NW | 305 | 0.01 | 6.02 | - | - | - |
| Suscol Upper (Ranch 92) | 12/13/25 | 50.5 5.2 | 1509 | 34.5 0.7 | 0215 | 38.6 0.7 | 100 0 | 74 16 | 1.7 | 8.7 10.0 | 1521 | WSW | 245 | 0.01 | 5.75 | - | - | 0 0 |
| Stanly (Ranch 45) | 12/13/25 | 51.6 2.4 | 1613 | 35.4 0.7 | 0800 | 37.6 1.0 | 99 1 | 67 3 | 2.5 | 9.6 3.1 | 1401 | SSE | 162 | 0.00 | 6.59 | 0.037 0.003 | 213 0 | 0 0 |
| Carneros Upper (Ranch 81) | 12/13/25 | 48.8 3.9 | 1516 | 36.3 2.7 | 0739 | 29.3 6.4 | - | - | 2.9 | 12.1 2.0 | 1245 | S | 176 | - | - | - | - | - |
| Carneros (Mitsuko) | 12/13/25 | 51.5 2.3 | 1428 | 37.4 1.6 | 0826 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/13/25 | 47.6 6.0 | 1438 | 37.0 1.4 | 1813 | 39.5 1.5 | 100 0 | 79 12 | 1.6 | 10.8 0.4 | 1243 | SSE | 161 | 0.00 | 4.76 | 0.020 0.008 | 99 34 | - |
| Carneros (Milton Rd) | 12/13/25 | 49.7 2.0 | 1353 | 38.8 4.7 | 0759 | 39.5 0.6 | 96 0 | 72 2 | - | - | - | - | 0.00 | 4.63 | - | - | - |
| Max | 65.4 | - | 50.5 | - | 41.2 | 100 | 79 | 4.8 | 13.4 | - | - | 0.01 | 8.39 | 0.065 | 231 | - | |
| Avg | - | - | - | - | 37.7 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 47.6 | - | 32.8 | - | 29.3 | 66 | 4 | 1.0 | 5.8 | - | - | 0.00 | 1.64 | 0.015 | 91 | - |