| 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 | 2/23/26 | 62.7 6.2 | 1323 | 46.5 4.5 | 0706 | - | - | - | - | - | - | - | 0.17 | 40.51 | - | - | - |
| Pope Valley (Weeks Lake) | 2/23/26 | 69.1 4.5 | 1246 | 46.4 10.2 | 0500 | 48.2 4.8 | 100 0 | 43 6 | 1.6 | 11.0 1.1 | 1226 | ESE | 111 | 0.03 | 21.14 | 0.076 0.008 | 246 14 | 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 | 2/23/26 | 69.4 2.8 | 1301 | 47.2 7.5 | 0544 | 50.8 4.5 | 100 3 | 49 7 | 2.9 | 14.4 4.9 | 1420 | SSW | 198 | 0.02 | 18.91 | 0.086 0.001 | 272 62 | - |
| Dollarhide 1AS Remote | 2/23/26 | 69.4 2.9 | 1249 | 44.4 10.5 | 0506 | 49.1 4.2 | 95 1 | 48 6 | 1.7 | 14.0 7.7 | 1417 | S | 183 | - | - | - | - | - |
| Dollarhide 17B Remote | 2/23/26 | 70.0 3.0 | 1255 | 47.3 10.0 | 0513 | 50.7 4.6 | 100 2 | 50 6 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 2/23/26 | 69.3 2.8 | 1255 | 43.5 10.5 | 0444 | 49.2 4.5 | 100 0 | 48 8 | - | - | - | - | - | - | - | - | - |
| Angwin | 2/23/26 | 59.2 4.7 | 1336 | 47.4 6.8 | 0522 | 45.8 4.3 | 100 0 | 51 18 | 5.0 | 14.2 3.6 | 2257 | SSE | 167 | 0.08 | 37.29 | 0.024 0.005 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 2/23/26 | 61.8 5.4 | 1220 | 45.1 2.2 | 0458 | - | - | - | 2.7 | 14.0 1.0 | 1142 | SE | 146 | - | - | - | - | - |
| Deer Park | 2/23/26 | 67.8 3.9 | 1348 | 51.0 3.8 | 0644 | 48.9 5.6 | 98 5 | 38 14 | 3.1 | 17.5 1.5 | 1347 | SE | 144 | 0.04 | 22.95 | 0.076 0.017 | 194 64 | - |
| Lower Chiles Valley (Brown) | 2/23/26 | 69.4 4.8 | 1403 | 43.0 2.0 | 0655 | 47.1 4.1 | 100 5 | 37 12 | 1.6 | 11.8 4.1 | 1304 | SE | 133 | 0.01 | 19.99 | 0.079 0.019 | 264 108 | 0 0 |
| Moss Creek Vineyard/Reservior | 2/23/26 | 69.8 2.8 | 1413 | 44.9 6.7 | 0705 | 46.8 3.4 | 100 6 | 36 9 | - | - | - | - | 0.00 | 22.82 | - | - | - |
| Max | 70.0 | - | 51.0 | - | 50.8 | 100 | 51 | 5.0 | 17.5 | - | - | 0.17 | 40.51 | 0.086 | 272 | - | |
| Avg | - | - | - | - | 48.5 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 59.2 | - | 43.0 | - | 45.8 | 95 | 36 | 1.6 | 11.0 | - | - | 0.00 | 18.91 | 0.024 | 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 | 2/23/26 | 72.3 8.4 | 1326 | 50.5 4.5 | 0456 | 52.1 4.3 | 100 2 | 43 13 | - | - | - | - | 0.05 | 27.04 | - | - | 0 0 |
| Fotsch (Maple Lane) | 2/23/26 | 69.6 3.9 | 1332 | 50.0 5.8 | 0540 | 50.4 4.8 | 97 2 | 40 7 | 2.1 | 13.8 0.2 | 1210 | ESE | 114 | 0.05 | 25.05 | - | - | - |
| Diamond Mtn (Schramsberg) | 2/23/26 | 64.3 2.2 | 1333 | 51.0 6.2 | 0339 | 50.2 6.1 | 100 0 | 50 5 | - | - | - | - | 0.05 | 25.57 | - | - | - |
| Diamond Mtn (McEachran) | 2/23/26 | 66.9 2.0 | 1328 | 50.6 7.0 | 0508 | 51.0 5.4 | 99 2 | 44 7 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 2/23/26 | 69.3 3.9 | 1334 | 49.6 7.3 | 0507 | 50.2 5.7 | 100 10 | 38 8 | 1.7 | 11.2 2.0 | 1352 | SSE | 151 | 0.04 | 25.77 | 0.071 0.023 | 212 64 | 0 0 |
| St. Helena (NVV Office) | 2/23/26 | 69.5 0.9 | 1409 | 51.7 8.1 | 0516 | - | - | - | 1.5 | 9.8 2.6 | 1315 | SE | 143 | 0.02 | 22.95 | - | - | - |
| Tiara Fria (East St. Helena) | 2/23/26 | 68.6 3.4 | 1355 | 50.4 10.3 | 0510 | 50.7 5.5 | 97 4 | 39 12 | 1.9 | 11.4 2.1 | 1352 | ESE | 102 | 0.01 | 21.33 | - | - | - |
| Rutherford Hill Estate | 2/23/26 | 70.8 5.3 | 1359 | 51.6 5.5 | 0540 | 50.0 5.6 | 94 6 | 41 9 | 1.5 | 11.8 0.4 | 1337 | S | 185 | 0.01 | 20.97 | 0.070 0.015 | 229 50 | 0 0 |
| Rutherford-North (Mee Ln) | 2/23/26 | 69.2 0.2 | 1400 | 46.9 9.7 | 0612 | 49.8 4.9 | 99 2 | 39 9 | 2.3 | 13.8 0.9 | 1249 | ESE | 110 | 0.02 | 20.06 | 0.077 0.011 | 240 15 | 0 0 |
| Rutherford (STS) | 2/23/26 | 70.3 2.7 | 1358 | 49.1 11.4 | 0522 | 51.4 4.7 | 91 1 | 48 9 | 2.0 | 12.5 2.4 | 1246 | ESE | 117 | 0.02 | 21.18 | 0.082 0.027 | 284 81 | - |
| Oakville-NE (Ranch 88) | 2/23/26 | 68.9 4.9 | 1359 | 47.8 11.3 | 0608 | 49.6 5.5 | 96 1 | 41 7 | 1.4 | 12.5 2.3 | 1236 | S | 170 | 0.02 | 20.79 | 0.077 0.017 | 263 72 | 0 0 |
| OV561-East | 2/23/26 | 70.6 5.9 | 1400 | 47.8 10.5 | 0603 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 2/23/26 | 69.1 6.2 | 1357 | 47.9 11.0 | 0624 | 49.8 5.4 | 98 1 | 41 7 | 2.6 | 13.7 1.3 | 1232 | SE | 142 | 0.01 | 21.38 | 0.081 0.012 | 262 49 | - |
| OV518-West | 2/23/26 | 69.0 5.5 | 1358 | 48.3 10.5 | 0636 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 2/23/26 | 69.7 5.8 | 1357 | 48.0 9.7 | 0612 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 2/23/26 | 68.4 4.5 | 1355 | 48.1 9.4 | 0612 | 50.5 5.0 | 100 3 | 42 6 | 2.6 | 11.9 2.6 | 1236 | SE | 143 | 0.02 | 23.14 | 0.077 0.016 | 239 47 | - |
| To Kalon Remote (TKN5) | 2/23/26 | 69.3 5.0 | 1353 | 47.4 9.5 | 0617 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 2/23/26 | 68.0 4.5 | 1407 | 46.4 9.5 | 0638 | 49.2 5.5 | 98 2 | 46 1 | 2.7 | 11.8 2.6 | 1233 | S | 169 | 0.04 | 19.65 | 0.081 0.001 | 282 30 | - |
| Stags Leap Dist (Silverado Vineyards) | 2/23/26 | 67.3 4.0 | 1401 | 46.8 9.5 | 0615 | 48.9 5.6 | 96 3 | 46 1 | 2.3 | 14.7 1.8 | 1232 | S | 174 | 0.01 | 23.55 | 0.084 0.002 | 285 4 | - |
| Borreo (Soda Canyon) | 2/23/26 | 66.7 2.4 | 1417 | 45.1 6.4 | 0643 | 48.4 5.3 | 96 2 | 46 1 | 1.3 | 8.4 5.0 | 1227 | SSE | 152 | 0.01 | 23.27 | 0.075 0.017 | 284 80 | - |
| Wappo Hill Floor | 2/23/26 | 68.5 2.9 | 1404 | 44.5 7.8 | 0611 | 50.2 5.3 | 100 0 | 47 0 | 1.8 | 9.8 2.9 | 1218 | SSE | 158 | 0.01 | 22.94 | 0.074 0.008 | 251 31 | - |
| Stags Leap Dist (Chimney Rock) | 2/23/26 | 68.8 2.2 | 1414 | 46.0 8.8 | 0632 | 35.4 8.5 | - | - | 2.1 | 11.4 3.7 | 1303 | SSW | 195 | 0.01 | 20.18 | 0.073 0.009 | 233 51 | 0 0 |
| Yountville-South (Ranch 87) | 2/23/26 | 67.9 2.8 | 1302 | 45.4 7.5 | 0654 | 50.8 5.8 | 100 0 | 49 1 | 1.8 | 10.2 4.8 | 1350 | WSW | 243 | 0.01 | 23.32 | 0.072 0.004 | 243 15 | - |
| Yountville-SE (Ranch 85) | 2/23/26 | 69.3 2.3 | 1408 | 46.0 8.1 | 0651 | 50.5 5.6 | 100 3 | 47 1 | 1.3 | 9.8 1.5 | 1408 | W | 262 | 0.01 | 21.80 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 2/23/26 | 69.6 3.1 | 1414 | 45.3 6.9 | 0644 | 49.2 5.3 | 96 4 | 36 7 | 1.6 | 9.5 2.8 | 1356 | SW | 221 | 0.02 | 20.01 | 0.075 0.009 | 248 40 | - |
| Napa-NW (Ranch 54) | 2/23/26 | 68.3 3.8 | 1413 | 46.3 6.8 | 0712 | 50.0 5.9 | 100 3 | 46 3 | 1.3 | 9.9 1.3 | 1403 | SSE | 155 | 0.02 | 22.15 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 2/23/26 | 69.9 3.4 | 1333 | 45.6 7.4 | 0617 | 49.7 4.6 | 100 0 | 41 4 | 1.2 | 11.8 0.9 | 1413 | SW | 214 | 0.01 | 19.77 | 0.058 0.007 | 177 19 | - |
| Max | 72.3 | - | 51.7 | - | 52.1 | 100 | 50 | 2.7 | 14.7 | - | - | 0.05 | 27.04 | 0.084 | 285 | - | |
| Avg | - | - | - | - | 49.4 | - | - | 1.8 | - | - | - | - | - | - | - | - | |
| Min | 64.3 | - | 44.5 | - | 35.4 | 91 | 36 | 1.2 | 8.4 | - | - | 0.01 | 19.65 | 0.058 | 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 | 2/23/26 | 61.7 4.5 | 1345 | 50.3 5.9 | 0006 | 46.3 3.9 | 100 0 | 44 16 | 2.9 | 11.8 3.5 | 1359 | S | 173 | 0.02 | 28.36 | 0.095 0.004 | 448 55 | 0 0 |
| Mount George (Napa East) | 2/23/26 | 75.8 3.3 | 1323 | 45.1 0.8 | 0653 | 49.2 2.0 | 98 2 | 38 9 | 1.3 | 10.6 3.4 | 2318 | ESE | 115 | 0.00 | 11.12 | 0.083 0.012 | 290 71 | - |
| Napa-East (Palmaz 300') | 2/23/26 | 71.6 4.1 | 1358 | 47.8 4.9 | 0548 | 48.6 4.5 | 100 9 | 33 10 | 1.8 | 13.5 4.7 | 1943 | E | 81 | 0.00 | 17.56 | 0.080 0.010 | 263 60 | - |
| Napa-East (Palmaz 1200') | 2/23/26 | 65.6 3.4 | 1415 | 44.0 3.8 | 0624 | 45.1 2.8 | 100 0 | 3 0 | 2.2 | 9.6 3.1 | 1305 | SSE | 159 | - | - | 0.078 0.001 | 277 35 | - |
| Napa-East (Palmaz 1400') | 2/23/26 | 65.3 3.4 | 1318 | 44.2 2.2 | 0621 | 46.4 3.4 | 100 0 | 42 10 | 2.3 | 13.4 2.9 | 2312 | S | 181 | 0.01 | 23.68 | 0.078 0.007 | 280 41 | - |
| 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) | 2/23/26 | 69.7 4.2 | 1411 | 48.9 2.5 | 0656 | 23.4 21.4 | 100 5 | 0 43 | 2.2 | 12.6 3.5 | 1258 | S | 181 | 0.01 | 19.50 | 0.083 0.007 | 284 32 | 0 0 |
| Napa-West Lower (Truchard) | 2/23/26 | 70.8 3.3 | 1412 | 42.0 5.6 | 0612 | 49.2 5.0 | 100 6 | 49 7 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 2/23/26 | 69.8 3.4 | 1408 | 48.9 5.2 | 0601 | 52.4 5.0 | 100 6 | 55 2 | 0.9 | 10.6 2.5 | 1259 | SSE | 161 | 0.01 | 13.37 | 0.040 0.008 | 146 9 | 0 0 |
| Toyon Remote 1 | 2/23/26 | 67.9 0.5 | 1411 | 43.9 5.9 | 0622 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 2/23/26 | 67.8 2.0 | 1414 | 44.7 6.1 | 0336 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 2/23/26 | 69.1 0.7 | 1410 | 43.4 5.6 | 0604 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 2/23/26 | 67.5 0.6 | 1418 | 45.0 2.4 | 0612 | 50.2 5.5 | 97 4 | 51 7 | 1.7 | 10.0 1.3 | 1258 | SE | 130 | 0.01 | 18.73 | 0.074 0.012 | 279 52 | - |
| Carneros (Saintsbury) | 2/23/26 | 68.1 2.2 | 1411 | 44.6 3.1 | 0614 | 49.6 4.8 | 100 10 | 49 3 | 1.9 | 10.4 3.7 | 2327 | S | 182 | 0.01 | 5.13 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 2/23/26 | 68.2 0.6 | 1417 | 46.9 4.9 | 0709 | 49.1 5.2 | - | - | 3.5 | 13.7 1.8 | 1243 | S | 169 | 0.01 | 17.82 | 0.082 0.023 | 268 110 | - |
| Suscol Mtn (Ranch 93) | 2/23/26 | 66.1 1.3 | 1419 | 51.5 2.9 | 0046 | 47.5 5.3 | 92 2 | 44 3 | 4.0 | 18.8 3.4 | 1258 | SE | 139 | 0.00 | 13.12 | - | - | - |
| Suscol Upper (Ranch 92) | 2/23/26 | 70.0 3.5 | 1420 | 51.3 2.9 | 0118 | 48.3 5.6 | 93 4 | 40 4 | 1.9 | 14.2 3.2 | 1637 | ENE | 77 | 0.00 | 17.60 | - | - | 0 0 |
| Stanly (Ranch 45) | 2/23/26 | 70.4 3.5 | 1413 | 44.7 1.5 | 0703 | 49.2 4.3 | 98 9 | 44 1 | 3.1 | 12.3 3.6 | 2325 | SSW | 207 | 0.01 | 19.19 | 0.088 0.017 | 310 75 | 0 0 |
| Carneros Upper (Ranch 81) | 2/23/26 | 68.6 3.5 | 1402 | 51.4 3.9 | 0708 | 50.3 7.0 | - | - | 3.1 | 12.1 6.6 | 2336 | S | 184 | - | - | - | - | 0 0 |
| Carneros (Mitsuko) | 2/23/26 | 69.7 3.8 | 1407 | 43.6 6.3 | 0601 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 2/23/26 | 69.2 4.3 | 1416 | 45.8 1.8 | 0633 | 38.6 6.2 | 100 8 | 0 46 | 1.0 | 7.7 4.4 | 1213 | SSE | 162 | 0.01 | 16.56 | 0.063 0.003 | 231 3 | 0 0 |
| Carneros (Milton Rd) | 2/23/26 | 70.8 3.6 | 1419 | 45.0 4.4 | 0606 | 50.0 5.4 | 95 5 | 46 1 | - | - | - | - | 0.00 | 5.75 | - | - | - |
| Max | 75.8 | - | 51.5 | - | 52.4 | 100 | 55 | 4.0 | 18.8 | - | - | 0.02 | 28.36 | 0.095 | 448 | - | |
| Avg | - | - | - | - | 46.7 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 61.7 | - | 42.0 | - | 23.4 | 92 | 0 | 0.9 | 7.7 | - | - | 0.00 | 5.13 | 0.040 | 146 | - |