| 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 | 12/12/25 | 72.0 3.4 | 1344 | 43.5 2.0 | 2310 | - | - | - | - | - | - | - | 0.00 | 11.97 | - | - | - |
| Pope Valley (Weeks Lake) | 12/12/25 | 68.9 1.6 | 1516 | 29.9 2.2 | 2331 | 37.7 2.6 | 100 0 | 36 4 | 0.9 | 4.4 0.2 | 1222 | SE | 129 | 0.01 | 5.58 | 0.037 0.000 | 184 0 | 0 0 |
| Whiskey River Winery | 12/12/25 | 56.4 9.4 | 1514 | 37.0 3.6 | 0605 | 38.4 1.4 | 99 0 | 63 13 | 0.0 | 2.4 10.6 | 0129 | NNW | 341 | 0.32 | 7.07 | - | - | - |
| Dollarhide Base | 12/12/25 | 67.1 2.1 | 1411 | 36.2 0.8 | 2349 | 40.8 3.0 | 100 0 | 34 25 | 1.5 | 9.1 4.5 | 1511 | NE | 48 | 0.02 | 4.88 | 0.047 0.007 | 207 12 | - |
| Dollarhide 1AS Remote | 12/12/25 | 72.5 4.3 | 1450 | 29.4 2.3 | 2355 | 38.3 2.3 | 95 0 | 33 22 | 1.0 | 5.4 0.5 | 0421 | S | 183 | - | - | - | - | - |
| Dollarhide 17B Remote | 12/12/25 | 72.5 4.3 | 1513 | 31.9 3.4 | 2357 | 40.6 2.6 | 100 0 | 36 19 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 12/12/25 | 73.0 6.5 | 1450 | 28.9 2.8 | 2336 | 38.8 2.7 | 100 0 | 32 27 | - | - | - | - | - | - | - | - | - |
| Angwin | 12/12/25 | 64.3 3.7 | 0001 | 51.7 4.7 | 0551 | 25.4 2.6 | 47 4 | 17 0 | 9.6 | 18.2 1.2 | 1227 | N | 351 | 0.00 | 10.82 | 0.119 0.002 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 12/12/25 | 66.8 4.5 | 1427 | 45.0 1.1 | 2208 | - | - | - | 4.7 | 15.9 5.2 | 1241 | NE | 45 | - | - | - | - | - |
| Deer Park | 12/12/25 | 58.5 1.3 | 1504 | 31.9 4.9 | 0652 | 40.0 2.2 | 99 0 | 62 6 | 1.3 | 6.6 0.3 | 1546 | S | 190 | 0.00 | 6.26 | 0.032 0.007 | 165 35 | - |
| Lower Chiles Valley (Brown) | 12/12/25 | 71.6 5.0 | 1429 | 30.6 2.1 | 0742 | 37.0 2.4 | 100 0 | 26 21 | 2.1 | 10.6 0.1 | 1201 | E | 93 | 0.00 | 1.48 | 0.066 0.014 | 245 18 | 0 0 |
| Moss Creek Vineyard/Reservior | 12/12/25 | 61.7 0.1 | 1209 | 32.3 1.9 | 0741 | 39.5 1.1 | 100 0 | 47 12 | - | - | - | - | 0.01 | 6.18 | - | - | - |
| Max | 73.0 | - | 51.7 | - | 40.8 | 100 | 63 | 9.6 | 18.2 | - | - | 0.32 | 11.97 | 0.119 | 245 | - | |
| Avg | - | - | - | - | 37.7 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 56.4 | - | 28.9 | - | 25.4 | 47 | 17 | 0.0 | 2.4 | - | - | 0.00 | 1.48 | 0.032 | 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 | 12/12/25 | 53.8 0.3 | 1513 | 35.0 2.2 | 2116 | 40.9 1.2 | 100 0 | 76 5 | - | - | - | - | 0.00 | 7.39 | - | - | - |
| Fotsch (Maple Lane) | 12/12/25 | 54.8 0.5 | 1445 | 32.3 1.6 | 2048 | 38.6 1.8 | 98 0 | 64 3 | 1.7 | 8.3 0.8 | 1451 | ESE | 109 | 0.01 | 6.47 | - | - | - |
| Diamond Mtn (Schramsberg) | 12/12/25 | 53.0 1.5 | 1227 | 32.8 2.8 | 0602 | 40.5 1.3 | 100 0 | 63 11 | - | - | - | - | 0.01 | 6.82 | - | - | - |
| Diamond Mtn (McEachran) | 12/12/25 | 53.7 2.0 | 1413 | 34.0 2.8 | 0657 | 40.3 1.7 | 100 0 | 70 14 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 12/12/25 | 55.4 0.1 | 1455 | 36.0 2.2 | 2059 | 38.7 1.8 | 95 0 | 64 3 | 1.7 | 9.4 2.8 | 1213 | SE | 145 | 0.00 | 6.01 | 0.025 0.004 | 130 25 | - |
| St. Helena (NVV Office) | 12/12/25 | 56.5 0.1 | 1449 | 34.9 3.8 | 2218 | - | - | - | 0.6 | 5.4 1.7 | 1235 | SE | 130 | 0.01 | 5.88 | - | - | - |
| Tiara Fria (East St. Helena) | 12/12/25 | 58.7 2.8 | 1535 | 32.3 2.9 | 2134 | 38.4 2.5 | 98 0 | 62 6 | 1.0 | 6.8 1.5 | 1251 | SE | 128 | 0.01 | 5.71 | - | - | - |
| Rutherford Hill Estate | 12/12/25 | 60.0 0.1 | 1520 | 35.8 3.6 | 0704 | 40.4 2.4 | 100 0 | 59 4 | 0.8 | 5.9 0.4 | 1410 | SSW | 208 | 0.00 | 4.02 | 0.025 0.000 | 144 7 | 0 0 |
| Rutherford-North (Mee Ln) | 12/12/25 | 59.4 0.8 | 1541 | 30.8 2.8 | 2102 | 34.5 2.0 | 98 0 | 62 2 | 1.1 | 6.1 1.1 | 1235 | ESE | 109 | 0.01 | 5.11 | 0.022 0.000 | 136 9 | 0 0 |
| Rutherford (STS) | 12/12/25 | 61.4 1.7 | 1510 | 31.8 4.0 | 2227 | 37.0 2.1 | 91 0 | 64 6 | 1.0 | 5.4 0.7 | 1219 | E | 99 | 0.01 | 5.76 | 0.025 0.001 | 128 9 | - |
| Oakville-NE (Ranch 88) | 12/12/25 | 57.9 2.6 | 1454 | 31.8 2.8 | 2103 | 37.3 2.6 | 97 0 | 58 2 | 0.8 | 7.0 2.3 | 1406 | SSW | 193 | 0.00 | 5.56 | 0.029 0.002 | 150 9 | 0 0 |
| OV561-East | 12/12/25 | 61.9 0.6 | 1515 | 31.6 2.7 | 2215 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 12/12/25 | 57.4 1.1 | 1446 | 32.7 2.1 | 2109 | 38.3 2.2 | 98 0 | 60 1 | 1.4 | 8.4 4.0 | 1421 | SE | 127 | 0.01 | 5.47 | 0.031 0.005 | 164 26 | - |
| OV518-West | 12/12/25 | 56.5 1.6 | 1452 | 33.1 3.0 | 2113 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 12/12/25 | 59.0 0.6 | 1506 | 31.5 1.8 | 2027 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 12/12/25 | 57.6 0.2 | 1512 | 32.4 2.4 | 2136 | 39.3 2.1 | 100 0 | 64 4 | 1.3 | 7.2 3.1 | 1453 | SSE | 154 | 0.01 | 5.87 | 0.027 0.004 | 145 22 | - |
| To Kalon Remote (TKN5) | 12/12/25 | 59.4 1.0 | 1446 | 32.8 1.3 | 2039 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 12/12/25 | 56.6 1.3 | 1444 | 31.9 1.4 | 2107 | 37.5 2.2 | 98 0 | 59 1 | 1.4 | 9.5 2.6 | 1443 | S | 185 | 0.01 | 4.76 | 0.037 0.000 | 282 7 | - |
| Stags Leap Dist (Silverado Vineyards) | 12/12/25 | 56.4 2.1 | 1450 | 31.2 1.8 | 2117 | 37.4 2.1 | 98 0 | 59 3 | 1.0 | 9.4 3.5 | 1554 | SSE | 148 | 0.00 | 6.02 | 0.032 0.001 | 153 4 | - |
| Borreo (Soda Canyon) | 12/12/25 | 56.0 1.5 | 1416 | 31.6 0.2 | 0001 | 36.8 2.1 | 99 0 | 61 0 | 1.5 | 5.5 0.2 | 1354 | S | 172 | 0.01 | 6.85 | 0.036 0.001 | 200 1 | - |
| Wappo Hill Floor | 12/12/25 | 57.4 2.0 | 1422 | 31.4 0.9 | 2141 | 38.8 2.0 | 100 0 | 60 1 | 1.5 | 8.3 2.0 | 1455 | S | 189 | 0.01 | 5.88 | 0.033 0.001 | 168 3 | - |
| Stags Leap Dist (Chimney Rock) | 12/12/25 | 58.5 1.7 | 1448 | 31.2 1.1 | 2210 | - | - | - | 1.6 | 8.1 0.4 | 1516 | S | 174 | 0.00 | 6.24 | 0.036 0.003 | 150 2 | 0 0 |
| Yountville-South (Ranch 87) | 12/12/25 | 57.3 2.4 | 1406 | 32.0 1.5 | 2152 | 39.5 1.8 | 100 0 | 61 2 | 1.0 | 8.1 2.1 | 1413 | SSE | 155 | 0.00 | 5.91 | 0.034 0.000 | 173 6 | - |
| Yountville-SE (Ranch 85) | 12/12/25 | 56.6 2.7 | 1445 | 33.4 1.5 | 2150 | 39.7 1.8 | 100 0 | 62 1 | 1.3 | 7.8 1.5 | 1420 | SSE | 158 | 0.00 | 5.90 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 12/12/25 | 57.2 2.9 | 1341 | 33.1 1.0 | 2119 | 39.0 1.6 | 97 1 | 58 3 | 1.2 | 6.7 0.4 | 1533 | S | 182 | 0.00 | 6.43 | 0.034 0.001 | 171 0 | - |
| Napa-NW (Ranch 54) | 12/12/25 | 57.0 0.1 | 1458 | 33.2 1.1 | 2208 | 39.4 1.7 | 100 0 | 59 3 | 1.2 | 7.5 0.1 | 1255 | SE | 141 | 0.00 | 6.63 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 12/12/25 | 58.1 1.3 | 1423 | 35.8 0.4 | 2049 | 40.4 1.9 | 100 0 | 57 1 | 0.9 | 6.7 0.4 | 1326 | SSW | 197 | 0.00 | 6.44 | 0.027 0.001 | 128 7 | - |
| Max | 61.9 | - | 36.0 | - | 40.9 | 100 | 76 | 1.7 | 9.5 | - | - | 0.01 | 7.39 | 0.037 | 282 | - | |
| Avg | - | - | - | - | 38.7 | - | - | 1.2 | - | - | - | - | - | - | - | - | |
| Min | 53.0 | - | 30.8 | - | 34.5 | 91 | 57 | 0.6 | 5.4 | - | - | 0.00 | 4.02 | 0.022 | 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 | 12/12/25 | 68.5 0.0 | 1221 | 50.0 5.2 | 0218 | 28.6 5.9 | 64 5 | 21 3 | 1.7 | 10.0 3.4 | 1247 | N | 352 | 0.00 | 8.39 | 0.062 0.009 | 148 1 | 0 0 |
| Mount George (Napa East) | 12/12/25 | 64.6 1.2 | 1504 | 34.2 1.9 | 2209 | 41.0 4.4 | 100 0 | 63 1 | 0.9 | 7.2 1.1 | 1301 | WSW | 246 | 0.00 | 2.99 | 0.041 0.001 | 203 9 | - |
| Napa-East (Palmaz 300') | 12/12/25 | 58.0 0.4 | 1419 | 33.8 0.8 | 2219 | 39.3 1.8 | 100 0 | 57 2 | 1.0 | 7.3 1.5 | 1312 | SSW | 197 | 0.00 | 6.01 | 0.036 0.002 | 184 16 | - |
| Napa-East (Palmaz 1200') | 12/12/25 | 63.6 2.8 | 1339 | 36.5 2.4 | 0122 | 35.7 3.5 | 100 0 | 4 1 | 4.1 | 15.4 1.3 | 0318 | N | 11 | - | - | 0.058 0.005 | 229 1 | - |
| Napa-East (Palmaz 1400') | 12/12/25 | 61.0 1.1 | 1339 | 34.0 0.9 | 0100 | 36.6 2.4 | 100 0 | 44 2 | 5.4 | 11.2 1.0 | 0947 | N | 9 | 0.00 | 8.11 | 0.051 0.000 | 226 4 | - |
| 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) | 12/12/25 | 54.8 0.9 | 1401 | 36.4 2.1 | 2202 | - | - | - | 2.0 | 11.5 1.6 | 1418 | SW | 214 | 0.00 | 6.09 | 0.040 0.001 | 182 15 | 0 0 |
| Napa-West Lower (Truchard) | 12/12/25 | 55.4 0.6 | 1403 | 33.3 0.4 | 1947 | 39.4 1.4 | 100 5 | 64 2 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 12/12/25 | 54.1 1.1 | 1407 | 38.8 1.3 | 2319 | 41.9 1.6 | 100 0 | 72 2 | 1.5 | 8.8 0.5 | 1315 | SW | 221 | 0.01 | 2.35 | 0.021 0.003 | 114 1 | 0 0 |
| Toyon Remote 1 | 12/12/25 | 55.7 0.1 | 1327 | 36.1 0.8 | 2213 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 12/12/25 | 53.6 0.5 | 1435 | 39.1 0.6 | 2327 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 12/12/25 | 56.2 0.2 | 1321 | 36.8 0.8 | 2225 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 12/12/25 | 53.8 1.1 | 1350 | 37.4 0.9 | 2235 | 40.2 1.3 | 97 1 | 66 2 | 1.7 | 9.1 0.6 | 1241 | SW | 234 | 0.00 | 5.78 | 0.035 0.002 | 182 7 | - |
| Carneros (Saintsbury) | 12/12/25 | 52.8 1.5 | 1507 | 36.4 1.8 | 0827 | 39.1 1.5 | 100 0 | 69 0 | 2.2 | 8.3 1.5 | 1528 | SE | 146 | 0.00 | 1.64 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 12/12/25 | 56.5 0.9 | 1350 | 34.6 0.3 | 1945 | 40.3 1.3 | - | - | 1.8 | 8.0 0.6 | 1554 | SW | 217 | 0.01 | 5.63 | 0.034 0.002 | 179 1 | - |
| Suscol Mtn (Ranch 93) | 12/12/25 | 55.2 1.9 | 1328 | 34.7 2.7 | 0621 | 39.2 1.8 | 100 0 | 60 5 | 3.0 | 20.3 4.2 | 0340 | E | 79 | 0.00 | 6.01 | - | - | - |
| Suscol Upper (Ranch 92) | 12/12/25 | 55.8 1.0 | 1436 | 35.3 1.2 | 2359 | 39.3 1.8 | 100 0 | 58 8 | - | 18.7 7.8 | 1318 | NNE | 33 | 0.00 | 5.74 | - | - | 0 0 |
| Stanly (Ranch 45) | 12/12/25 | 54.0 0.1 | 1427 | 34.7 1.2 | 1942 | 38.5 1.2 | 99 1 | 64 4 | 2.3 | 12.7 0.2 | 1253 | SE | 132 | 0.00 | 6.59 | 0.040 0.001 | 213 3 | 0 0 |
| Carneros Upper (Ranch 81) | 12/12/25 | 52.7 0.0 | 1324 | 39.0 1.8 | 0328 | 35.7 13.4 | - | - | 3.4 | 14.1 4.2 | 1441 | S | 182 | - | - | - | - | - |
| Carneros (Mitsuko) | 12/12/25 | 53.8 0.8 | 1412 | 39.0 0.0 | 1826 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/12/25 | 53.6 0.6 | 1331 | 38.4 3.3 | 1846 | 41.0 0.7 | 100 0 | 67 5 | 1.3 | 10.4 1.8 | 1513 | SSE | 159 | 0.00 | 4.76 | 0.028 0.004 | 133 22 | - |
| Carneros (Milton Rd) | 12/12/25 | 51.8 0.3 | 1427 | 34.0 1.9 | 2059 | 40.0 1.4 | 95 0 | 70 3 | - | - | - | - | 0.00 | 4.63 | - | - | - |
| Max | 68.5 | - | 50.0 | - | 41.9 | 100 | 72 | 5.4 | 20.3 | - | - | 0.01 | 8.39 | 0.062 | 229 | - | |
| Avg | - | - | - | - | 38.5 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 51.8 | - | 33.3 | - | 28.6 | 64 | 4 | 0.9 | 7.2 | - | - | 0.00 | 1.64 | 0.021 | 114 | - |