| 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 | 2/28/26 | 71.1 5.2 | 1559 | 51.1 3.3 | 0323 | - | - | - | - | - | - | - | 0.00 | 42.33 | - | - | - |
| Pope Valley (Weeks Lake) | 2/28/26 | 76.8 5.3 | 1313 | 48.2 3.0 | 0647 | 54.0 1.9 | 100 0 | 42 8 | 1.1 | 8.8 1.8 | 1310 | WSW | 242 | 0.00 | 21.60 | 0.079 0.019 | 267 76 | 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 | 2/28/26 | 79.8 0.3 | 1200 | 51.4 4.3 | 0656 | 57.7 2.7 | 100 0 | 49 4 | 2.3 | 12.1 2.3 | 2347 | S | 182 | 0.00 | 19.16 | 0.090 0.019 | 296 71 | - |
| Dollarhide 1AS Remote | 2/28/26 | 78.5 3.1 | 1209 | 48.3 3.9 | 0644 | 55.3 2.6 | 95 0 | 49 8 | 1.2 | 10.4 2.7 | 1343 | W | 266 | - | - | - | - | - |
| Dollarhide 17B Remote | 2/28/26 | 78.6 1.8 | 1157 | 50.2 4.6 | 0643 | 57.1 2.6 | 100 0 | 50 6 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 2/28/26 | 77.7 4.1 | 1309 | 46.8 3.4 | 0645 | 55.2 2.6 | 100 0 | 50 9 | - | - | - | - | - | - | - | - | - |
| Angwin | 2/28/26 | 69.4 2.3 | 1210 | 54.4 0.6 | 2325 | 50.2 1.0 | 87 15 | 49 10 | 3.3 | 10.9 0.6 | 2310 | SSE | 168 | 0.00 | 38.60 | 0.029 0.009 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 2/28/26 | 71.9 2.5 | 1207 | 47.0 5.4 | 2253 | - | - | - | 2.1 | 11.7 0.8 | 1326 | WSW | 239 | - | - | - | - | - |
| Deer Park | 2/28/26 | 76.2 4.9 | 1152 | 55.9 2.1 | 2359 | 55.5 2.1 | 94 3 | 44 13 | 2.8 | 14.5 3.3 | 1305 | NW | 324 | 0.00 | 23.60 | 0.080 0.012 | 218 40 | - |
| Lower Chiles Valley (Brown) | 2/28/26 | 76.4 3.5 | 1341 | 49.0 3.7 | 0644 | 54.5 2.9 | 100 0 | 46 8 | 1.9 | 11.0 1.5 | 1242 | NW | 320 | 0.00 | 20.67 | 0.089 0.023 | 274 94 | 0 0 |
| Moss Creek Vineyard/Reservior | 2/28/26 | 79.7 4.7 | 1345 | 50.9 3.8 | 0703 | 55.6 3.8 | 100 0 | 42 6 | - | - | - | - | 0.00 | 23.37 | - | - | - |
| Max | 79.8 | - | 55.9 | - | 57.7 | 100 | 50 | 3.3 | 14.5 | - | - | 0.00 | 42.33 | 0.090 | 296 | - | |
| Avg | - | - | - | - | 55.0 | - | - | 2.1 | - | - | - | - | - | - | - | - | |
| Min | 69.4 | - | 46.8 | - | 50.2 | 87 | 42 | 1.1 | 8.8 | - | - | 0.00 | 19.16 | 0.029 | 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 | 2/28/26 | 76.7 6.8 | 1045 | 53.4 4.3 | 0646 | 57.6 1.9 | 100 0 | 49 9 | - | - | - | - | 0.00 | 27.89 | - | - | 60 60 |
| Fotsch (Maple Lane) | 2/28/26 | 77.2 5.3 | 1114 | 52.7 3.8 | 0652 | 55.9 2.2 | 97 0 | 41 7 | 2.5 | 15.6 1.8 | 1313 | WNW | 298 | 0.00 | 25.78 | - | - | - |
| Diamond Mtn (Schramsberg) | 2/28/26 | 74.5 4.7 | 1344 | 56.5 1.3 | 2341 | 54.8 1.8 | 90 3 | 46 10 | - | - | - | - | 0.00 | 26.40 | - | - | - |
| Diamond Mtn (McEachran) | 2/28/26 | 75.8 5.6 | 1125 | 56.4 4.1 | 2314 | 55.6 1.3 | 91 6 | 44 10 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 2/28/26 | 78.1 5.7 | 1141 | 53.2 3.5 | 0637 | 55.6 2.5 | 100 0 | 41 11 | 1.9 | 10.1 2.6 | 1301 | NW | 307 | 0.00 | 26.65 | 0.079 0.011 | 242 44 | 0 0 |
| St. Helena (NVV Office) | 2/28/26 | 77.7 5.7 | 1208 | 55.0 4.6 | 0701 | - | - | - | 1.2 | 11.2 3.8 | 1250 | NNW | 328 | 0.00 | 23.51 | - | - | - |
| Tiara Fria (East St. Helena) | 2/28/26 | 76.0 6.1 | 1249 | 53.9 4.2 | 0701 | 57.2 2.8 | 97 0 | 48 15 | 1.9 | 11.5 3.3 | 1256 | NW | 310 | 0.00 | 21.80 | - | - | - |
| Rutherford Hill Estate | 2/28/26 | 78.8 3.8 | 1340 | 56.5 2.8 | 2337 | 57.3 2.1 | 91 2 | 47 13 | 1.2 | 8.3 0.9 | 1348 | WSW | 241 | 0.00 | 21.34 | 0.075 0.022 | 250 64 | 0 0 |
| Rutherford-North (Mee Ln) | 2/28/26 | 77.6 5.7 | 1310 | 48.3 3.1 | 0643 | 55.6 2.9 | 100 0 | 52 20 | 1.9 | 9.9 2.2 | 1321 | NNW | 327 | 0.00 | 20.47 | 0.079 0.020 | 254 68 | 0 0 |
| Rutherford (STS) | 2/28/26 | 79.3 5.5 | 1311 | 52.6 4.3 | 0631 | 57.4 3.1 | 91 1 | 54 18 | 2.0 | 8.3 1.0 | 1454 | NW | 314 | 0.00 | 21.64 | 0.091 0.024 | 304 84 | - |
| Oakville-NE (Ranch 88) | 2/28/26 | 78.6 3.6 | 1337 | 52.2 4.0 | 0635 | 56.4 2.6 | 99 2 | 47 15 | 1.2 | 8.2 0.1 | 1811 | S | 188 | 0.00 | 21.18 | 0.085 0.020 | 285 76 | 0 0 |
| OV561-East | 2/28/26 | 78.9 4.6 | 1337 | 51.9 3.2 | 0650 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 2/28/26 | 78.2 3.5 | 1311 | 52.1 3.3 | 0648 | 56.7 2.3 | 98 0 | 49 16 | 2.5 | 12.8 3.6 | 1957 | SSE | 159 | 0.00 | 21.73 | 0.091 0.018 | 296 78 | - |
| OV518-West | 2/28/26 | 77.6 2.6 | 1338 | 52.8 3.4 | 0640 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 2/28/26 | 80.3 2.4 | 1340 | 52.4 3.9 | 0638 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 2/28/26 | 78.4 4.7 | 1316 | 52.2 3.2 | 0646 | 57.5 2.5 | 100 0 | 50 18 | 2.3 | 10.4 2.3 | 2001 | SE | 144 | 0.00 | 23.60 | 0.085 0.018 | 267 84 | - |
| To Kalon Remote (TKN5) | 2/28/26 | 79.0 4.4 | 1336 | 51.7 2.9 | 0647 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 2/28/26 | 77.4 3.8 | 1507 | 53.1 3.8 | 0620 | 56.1 1.8 | 98 0 | 47 13 | 2.0 | 12.1 3.6 | 1928 | ESE | 122 | 0.00 | 19.96 | 0.091 0.019 | 310 73 | - |
| Stags Leap Dist (Silverado Vineyards) | 2/28/26 | 77.6 3.4 | 1341 | 52.9 2.9 | 0647 | 55.7 1.8 | 96 1 | 46 11 | 1.8 | 12.7 2.9 | 1938 | SE | 134 | 0.00 | 23.90 | 0.095 0.023 | 314 89 | - |
| Borreo (Soda Canyon) | 2/28/26 | 75.0 3.7 | 1351 | 52.1 2.3 | 2357 | 54.9 1.0 | 96 2 | 46 6 | 1.4 | 6.7 1.5 | 1207 | SSE | 164 | 0.00 | 23.82 | 0.088 0.023 | 309 82 | - |
| Wappo Hill Floor | 2/28/26 | 80.2 3.3 | 1351 | 52.0 4.9 | 0636 | 57.0 1.8 | 100 0 | 45 7 | 1.8 | 9.4 2.2 | 1928 | SE | 124 | 0.00 | 23.27 | 0.087 0.021 | 282 88 | - |
| Stags Leap Dist (Chimney Rock) | 2/28/26 | 77.5 2.7 | 1347 | 53.8 4.7 | 0529 | 57.8 1.7 | 100 0 | 50 6 | 2.1 | 11.0 2.8 | 1920 | SE | 142 | 0.00 | 22.50 | 0.081 0.017 | 258 76 | - |
| Yountville-South (Ranch 87) | 2/28/26 | 78.2 4.3 | 1342 | 53.5 3.6 | 2340 | 57.6 1.6 | 100 0 | 49 11 | 1.8 | 7.4 2.2 | 1219 | S | 182 | 0.00 | 23.64 | 0.079 0.019 | 249 78 | - |
| Yountville-SE (Ranch 85) | 2/28/26 | 78.8 3.5 | 1342 | 53.3 4.0 | 0604 | 57.1 1.3 | 100 0 | 47 8 | 1.9 | 10.0 3.6 | 1934 | SSE | 164 | 0.00 | 22.18 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 2/28/26 | 80.5 1.4 | 1349 | 53.7 3.9 | 0657 | 56.3 1.2 | 97 0 | 40 5 | 1.7 | 8.3 0.1 | 1939 | SE | 139 | 0.00 | 20.44 | 0.087 0.015 | 273 70 | - |
| Napa-NW (Ranch 54) | 2/28/26 | 78.4 1.6 | 1351 | 53.7 3.4 | 2358 | 57.1 1.4 | 100 0 | 43 2 | 1.6 | 9.6 0.8 | 1148 | SSE | 164 | 0.00 | 22.66 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 2/28/26 | 78.8 1.0 | 1355 | 53.7 3.6 | 0712 | 56.7 0.9 | 100 0 | 45 3 | 1.3 | 9.3 0.5 | 1904 | SSW | 204 | 0.00 | 20.32 | 0.062 0.011 | 164 52 | - |
| Max | 80.5 | - | 56.5 | - | 57.8 | 100 | 54 | 2.5 | 15.6 | - | - | 0.00 | 27.89 | 0.095 | 314 | - | |
| Avg | - | - | - | - | 56.5 | - | - | 1.8 | - | - | - | - | - | - | - | - | |
| Min | 74.5 | - | 48.3 | - | 54.8 | 90 | 40 | 1.2 | 6.7 | - | - | 0.00 | 19.96 | 0.062 | 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 | 2/28/26 | 73.2 2.1 | 1312 | 55.7 2.4 | 0001 | 52.4 1.3 | 81 4 | 50 12 | 1.3 | 7.3 0.2 | 1027 | SSW | 197 | 0.00 | 29.22 | 0.077 0.016 | 258 32 | 0 0 |
| Mount George (Napa East) | 2/28/26 | 78.8 12.8 | 1055 | 51.9 2.1 | 0657 | 55.9 0.4 | 98 2 | 49 4 | 1.2 | 8.9 1.0 | 0755 | S | 169 | 0.00 | 11.88 | 0.091 0.018 | 313 70 | - |
| Napa-East (Palmaz 300') | 2/28/26 | 78.3 1.5 | 1219 | 54.6 3.4 | 0649 | 56.5 1.2 | 100 0 | 47 4 | 1.4 | 7.2 2.6 | 1409 | ESE | 114 | 0.00 | 18.31 | 0.084 0.018 | 275 67 | - |
| Napa-East (Palmaz 1200') | 2/28/26 | 73.4 0.8 | 1222 | 51.9 1.2 | 2313 | 54.0 0.9 | 100 0 | 4 40 | 2.2 | 14.8 4.1 | 0933 | ENE | 65 | - | - | 0.088 0.017 | 297 71 | - |
| Napa-East (Palmaz 1400') | 2/28/26 | 74.6 0.4 | 1226 | 53.8 3.2 | 2358 | 55.1 1.6 | 100 1 | 54 8 | 2.6 | 12.6 0.2 | 0904 | ENE | 77 | 0.00 | 24.79 | 0.091 0.019 | 315 63 | - |
| 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) | 2/28/26 | 79.6 1.1 | 1349 | 54.3 1.2 | 2304 | 57.7 7.8 | 100 0 | 0 0 | 2.6 | 12.2 1.5 | 0209 | NNE | 19 | 0.00 | 20.15 | 0.095 0.014 | 306 66 | 0 0 |
| Napa-West Lower (Truchard) | 2/28/26 | 80.2 0.2 | 1353 | 49.5 1.8 | 2251 | 56.0 1.2 | 100 0 | 46 2 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 2/28/26 | 78.1 0.1 | 1356 | 55.2 2.2 | 0658 | 59.1 0.9 | 100 0 | 55 1 | 1.4 | 11.5 3.7 | 2307 | W | 276 | 0.00 | 13.94 | 0.046 0.009 | 138 39 | 0 0 |
| Toyon Remote 1 | 2/28/26 | 78.8 0.9 | 1311 | 50.7 1.1 | 2247 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 2/28/26 | 78.1 0.7 | 1343 | 52.5 1.6 | 2248 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 2/28/26 | 79.6 0.7 | 1353 | 50.8 1.6 | 2258 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 2/28/26 | 77.6 0.0 | 1403 | 53.4 2.1 | 2238 | 56.6 0.5 | 96 1 | 47 1 | 1.8 | 14.7 6.4 | 2304 | W | 267 | 0.00 | 19.35 | 0.094 0.012 | 315 57 | - |
| Carneros (Saintsbury) | 2/28/26 | 77.4 0.2 | 1349 | 52.0 1.9 | 0657 | 56.4 0.9 | 100 0 | 50 1 | 2.7 | 19.3 11.1 | 2305 | WSW | 255 | 0.00 | 5.62 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 2/28/26 | 77.7 0.1 | 1350 | 54.0 1.9 | 0702 | 56.2 0.9 | - | - | 3.2 | 9.9 0.2 | 1040 | ESE | 120 | 0.00 | 18.31 | 0.097 0.007 | 304 54 | - |
| Suscol Mtn (Ranch 93) | 2/28/26 | 74.0 1.5 | 1347 | 53.0 4.9 | 2353 | 54.8 0.4 | 98 16 | 51 4 | 4.4 | 23.5 12.5 | 0845 | E | 97 | 0.00 | 13.80 | - | - | - |
| Suscol Upper (Ranch 92) | 2/28/26 | 76.7 2.2 | 1211 | 53.6 3.5 | 2359 | 54.5 0.5 | 100 14 | 3 44 | 1.6 | 13.4 4.2 | 2320 | WSW | 247 | 0.00 | 18.16 | - | - | 0 0 |
| Stanly (Ranch 45) | 2/28/26 | 78.1 0.3 | 1350 | 52.4 3.2 | 0645 | 56.1 1.3 | 99 1 | 47 1 | 3.6 | 13.6 3.1 | 1955 | SW | 214 | 0.00 | 19.65 | 0.105 0.012 | 340 67 | 0 0 |
| Carneros Upper (Ranch 81) | 2/28/26 | 76.1 0.7 | 1501 | 55.1 0.0 | 2358 | 56.2 1.2 | - | - | 5.8 | 24.3 16.2 | 2301 | W | 272 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 2/28/26 | 76.3 0.3 | 1345 | 52.4 3.5 | 0437 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 2/28/26 | 81.0 0.6 | 1355 | 55.3 3.6 | 0716 | 57.1 1.7 | 94 6 | 44 44 | 1.1 | 11.0 3.9 | 1007 | SSE | 162 | 0.00 | 16.94 | 0.075 0.012 | 257 41 | 0 0 |
| Carneros (Milton Rd) | 2/28/26 | 78.3 0.6 | 1346 | 53.0 1.4 | 0706 | 56.6 1.3 | 95 1 | 48 3 | - | - | - | - | 0.00 | 5.75 | - | - | - |
| Max | 81.0 | - | 55.7 | - | 59.1 | 100 | 55 | 5.8 | 24.3 | - | - | 0.00 | 29.22 | 0.105 | 340 | - | |
| Avg | - | - | - | - | 55.9 | - | - | 2.5 | - | - | - | - | - | - | - | - | |
| Min | 73.2 | - | 49.5 | - | 52.4 | 81 | 0 | 1.1 | 7.2 | - | - | 0.00 | 5.62 | 0.046 | 138 | - |