| 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 | 12/16/25 | 65.4 2.9 | 1112 | 49.0 8.5 | 0038 | - | - | - | - | - | - | - | 0.03 | 12.00 | - | - | - |
| Pope Valley (Weeks Lake) | 12/16/25 | 62.5 7.2 | 1355 | 37.7 8.5 | 0018 | 46.8 8.6 | 100 0 | 63 30 | 1.0 | 10.5 4.4 | 0855 | ESE | 110 | 0.00 | 5.60 | 0.024 0.015 | 94 83 | 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 | 12/16/25 | 64.1 4.2 | 1358 | 40.6 7.5 | 0117 | 49.7 8.0 | 100 0 | 70 29 | 2.5 | 12.0 1.8 | 0825 | WNW | 302 | 0.00 | 4.90 | 0.029 0.017 | 115 83 | - |
| Dollarhide 1AS Remote | 12/16/25 | 65.6 4.7 | 1402 | 37.3 8.0 | 0025 | 47.8 9.1 | 95 0 | 66 27 | 1.6 | 13.7 7.7 | 2330 | S | 173 | - | - | - | - | - |
| Dollarhide 17B Remote | 12/16/25 | 64.8 6.2 | 1401 | 39.3 8.8 | 0053 | 49.3 8.8 | 100 0 | 69 31 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 12/16/25 | 65.6 6.1 | 1402 | 37.2 8.4 | 0018 | 47.9 8.6 | 100 0 | 66 24 | - | - | - | - | - | - | - | - | - |
| Angwin | 12/16/25 | 64.1 1.5 | 1042 | 46.5 5.2 | 0651 | 53.6 15.6 | 100 17 | 67 40 | 4.0 | 14.4 0.1 | 2331 | S | 190 | 0.08 | 10.90 | 0.009 0.030 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 12/16/25 | 66.0 0.3 | 1147 | 43.6 0.2 | 0050 | - | - | - | 2.1 | 10.5 1.2 | 1321 | WSW | 250 | - | - | - | - | - |
| Deer Park | 12/16/25 | 62.1 7.4 | 1347 | 41.9 8.4 | 0345 | 45.6 5.6 | 99 1 | 63 3 | 2.0 | 8.0 0.7 | 1514 | SSW | 200 | 0.03 | 6.31 | 0.025 0.001 | 87 44 | - |
| Lower Chiles Valley (Brown) | 12/16/25 | 63.8 3.0 | 1407 | 37.8 6.8 | 0116 | 44.9 5.3 | 100 0 | 59 6 | 2.7 | 11.3 0.7 | 1519 | SW | 214 | 0.00 | 1.50 | 0.040 0.006 | 134 54 | 0 0 |
| Moss Creek Vineyard/Reservior | 12/16/25 | 65.7 1.7 | 1354 | 38.6 6.3 | 0118 | 44.4 4.9 | 100 0 | 57 19 | - | - | - | - | 0.00 | 6.19 | - | - | - |
| Max | 66.0 | - | 49.0 | - | 53.6 | 100 | 70 | 4.0 | 14.4 | - | - | 0.08 | 12.00 | 0.040 | 134 | - | |
| Avg | - | - | - | - | 47.8 | - | - | 2.3 | - | - | - | - | - | - | - | - | |
| Min | 62.1 | - | 37.2 | - | 44.4 | 95 | 57 | 1.0 | 8.0 | - | - | 0.00 | 1.50 | 0.009 | 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 | 12/16/25 | 61.8 7.0 | 1349 | 39.7 3.4 | 0051 | 47.3 5.8 | 100 0 | 76 1 | - | - | - | - | 0.05 | 7.45 | - | - | - |
| Fotsch (Maple Lane) | 12/16/25 | 62.4 8.9 | 1341 | 37.0 0.2 | 0004 | 45.3 5.7 | 97 0 | 63 6 | 1.7 | 8.6 0.8 | 1500 | ESE | 120 | 0.03 | 6.52 | - | - | - |
| Diamond Mtn (Schramsberg) | 12/16/25 | 59.0 5.0 | 1350 | 42.9 7.9 | 0459 | 47.1 4.2 | 100 0 | 73 2 | - | - | - | - | 0.05 | 6.87 | - | - | - |
| Diamond Mtn (McEachran) | 12/16/25 | 60.4 8.0 | 1350 | 40.7 6.3 | 0527 | 46.2 5.6 | 99 0 | 70 5 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 12/16/25 | 62.0 9.8 | 1349 | 39.0 2.7 | 0005 | 44.4 5.5 | 95 0 | 59 12 | 1.4 | 10.5 1.8 | 0807 | SSE | 157 | 0.02 | 6.05 | 0.026 0.001 | 89 28 | - |
| St. Helena (NVV Office) | 12/16/25 | 60.4 10.4 | 1358 | 40.1 3.3 | 0003 | - | - | - | 0.8 | 6.5 0.0 | 1428 | NE | 53 | 0.01 | 5.90 | - | - | - |
| Tiara Fria (East St. Helena) | 12/16/25 | 58.8 8.9 | 1357 | 39.6 3.6 | 0001 | 44.9 5.8 | 97 0 | 67 10 | 1.1 | 5.8 0.3 | 1422 | SE | 127 | 0.00 | 5.72 | - | - | - |
| Rutherford Hill Estate | 12/16/25 | 60.2 9.2 | 1446 | 39.7 4.0 | 0606 | 45.0 4.3 | 100 0 | 65 15 | 0.9 | 6.6 0.7 | 1335 | SE | 142 | 0.00 | 4.03 | 0.026 0.008 | 116 16 | 0 0 |
| Rutherford-North (Mee Ln) | 12/16/25 | 60.0 15.4 | 1410 | 33.4 8.1 | 0553 | 41.1 10.0 | 98 1 | 65 19 | 1.4 | 7.7 0.4 | 1303 | SE | 129 | 0.00 | 5.13 | 0.026 0.011 | 122 16 | 0 0 |
| Rutherford (STS) | 12/16/25 | 62.6 12.1 | 1352 | 38.3 2.1 | 0010 | 44.0 6.4 | 90 1 | 67 15 | 1.1 | 6.6 0.1 | 1425 | ESE | 111 | 0.01 | 5.79 | 0.028 0.009 | 122 32 | - |
| Oakville-NE (Ranch 88) | 12/16/25 | 60.4 9.1 | 1440 | 37.4 0.5 | 0001 | 43.5 4.6 | 97 0 | 60 13 | 1.1 | 7.5 0.9 | 1738 | S | 185 | 0.01 | 5.59 | 0.030 0.010 | 137 29 | 0 0 |
| OV561-East | 12/16/25 | 62.0 9.1 | 1446 | 38.0 0.5 | 0057 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 12/16/25 | 58.9 7.8 | 1546 | 38.4 1.2 | 0107 | 43.8 4.3 | 98 0 | 64 9 | 1.7 | 8.7 2.1 | 0822 | SSE | 148 | 0.00 | 5.48 | 0.030 0.010 | 135 23 | - |
| OV518-West | 12/16/25 | 58.3 7.9 | 1456 | 38.4 1.2 | 0013 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 12/16/25 | 59.7 8.2 | 1449 | 39.0 2.3 | 0018 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 12/16/25 | 58.8 7.9 | 1441 | 38.7 2.2 | 0017 | 45.0 4.7 | 100 0 | 66 15 | 1.5 | 8.4 2.3 | 1349 | SSE | 159 | 0.00 | 5.89 | 0.027 0.010 | 115 26 | - |
| To Kalon Remote (TKN5) | 12/16/25 | 60.4 9.0 | 1435 | 38.7 1.7 | 0023 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 12/16/25 | 58.5 6.8 | 1455 | 36.7 0.3 | 0030 | 42.7 3.6 | 97 0 | 62 8 | 1.9 | 11.2 4.4 | 1944 | SSE | 154 | 0.00 | 4.77 | 0.036 0.009 | 231 1 | - |
| Stags Leap Dist (Silverado Vineyards) | 12/16/25 | 58.1 5.9 | 1448 | 36.9 0.2 | 0107 | 42.7 3.7 | 97 1 | 63 7 | 1.5 | 12.0 5.5 | 1933 | SSE | 164 | 0.00 | 6.04 | 0.030 0.009 | 134 23 | - |
| Borreo (Soda Canyon) | 12/16/25 | 57.8 6.2 | 1358 | 37.4 4.3 | 0006 | 43.2 4.5 | 98 0 | 63 10 | 1.0 | 5.6 0.4 | 0931 | SSW | 193 | 0.00 | 6.86 | 0.029 0.006 | 144 13 | - |
| Wappo Hill Floor | 12/16/25 | 59.8 6.9 | 1445 | 36.2 0.5 | 0111 | 43.6 3.7 | 100 0 | 63 8 | 1.7 | 7.2 1.6 | 0836 | S | 179 | 0.00 | 5.88 | 0.030 0.008 | 139 18 | - |
| Stags Leap Dist (Chimney Rock) | 12/16/25 | 60.4 5.4 | 1417 | 36.6 1.2 | 0137 | - | - | - | 1.6 | 7.9 2.2 | 0823 | S | 183 | 0.00 | 6.26 | 0.032 0.001 | 121 17 | 0 0 |
| Yountville-South (Ranch 87) | 12/16/25 | 60.5 7.4 | 1415 | 37.2 0.6 | 0100 | 44.4 3.7 | 100 0 | 61 10 | 1.5 | 7.7 2.3 | 1951 | SSE | 168 | 0.00 | 5.93 | 0.030 0.009 | 139 28 | - |
| Yountville-SE (Ranch 85) | 12/16/25 | 59.2 6.9 | 1539 | 37.3 0.9 | 0132 | 44.1 3.4 | 100 0 | 63 10 | 1.2 | 7.5 1.7 | 1439 | SSE | 149 | 0.00 | 5.92 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 12/16/25 | 60.0 5.8 | 1416 | 37.8 0.5 | 0126 | 43.3 3.1 | 97 1 | 58 6 | 1.3 | 7.7 2.1 | 1604 | S | 181 | 0.01 | 6.45 | 0.029 0.006 | 133 18 | - |
| Napa-NW (Ranch 54) | 12/16/25 | 58.2 5.3 | 1517 | 38.4 0.7 | 0014 | 44.0 3.3 | 100 0 | 63 6 | 1.6 | 7.9 2.4 | 1610 | SSE | 159 | 0.01 | 6.64 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 12/16/25 | 60.5 5.9 | 1447 | 38.5 0.1 | 0103 | 44.1 2.8 | 100 0 | 58 7 | 0.9 | 7.0 0.7 | 1554 | S | 180 | 0.00 | 6.44 | 0.023 0.005 | 94 14 | - |
| Max | 62.6 | - | 42.9 | - | 47.3 | 100 | 76 | 1.9 | 12.0 | - | - | 0.05 | 7.45 | 0.036 | 231 | - | |
| Avg | - | - | - | - | 44.3 | - | - | 1.3 | - | - | - | - | - | - | - | - | |
| Min | 57.8 | - | 33.4 | - | 41.1 | 90 | 58 | 0.8 | 5.6 | - | - | 0.00 | 4.03 | 0.023 | 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 | 12/16/25 | 64.9 3.4 | 1140 | 50.0 0.1 | 0547 | 50.2 10.1 | 100 18 | 64 23 | 1.0 | 6.8 0.8 | 1938 | SSE | 160 | 0.01 | 8.40 | 0.024 0.018 | 86 48 | 0 0 |
| Mount George (Napa East) | 12/16/25 | 62.5 7.7 | 1336 | 40.2 0.9 | 0118 | 46.2 1.4 | 100 0 | 63 4 | 0.7 | 5.0 1.8 | 1156 | WSW | 242 | 0.00 | 2.99 | 0.030 0.004 | 145 11 | - |
| Napa-East (Palmaz 300') | 12/16/25 | 62.1 7.0 | 1542 | 37.9 0.8 | 0106 | 43.8 2.8 | 100 0 | 59 5 | 0.7 | 5.1 0.4 | 1327 | W | 260 | 0.01 | 6.03 | 0.027 0.004 | 126 16 | - |
| Napa-East (Palmaz 1200') | 12/16/25 | 60.0 4.1 | 1140 | 41.4 5.3 | 0006 | 42.6 2.8 | 100 0 | 3 49 | 1.9 | 10.7 0.5 | 0902 | WNW | 291 | - | - | 0.032 0.004 | 138 51 | - |
| Napa-East (Palmaz 1400') | 12/16/25 | 65.4 2.0 | 1155 | 40.5 2.8 | 0601 | 46.6 6.3 | 100 7 | 58 16 | 2.4 | 10.4 0.1 | 0659 | NNE | 22 | 0.01 | 8.12 | 0.035 0.010 | 149 47 | - |
| 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) | 12/16/25 | 58.4 4.4 | 1352 | 39.2 1.0 | 0309 | - | - | - | 2.3 | 10.7 3.2 | 0837 | SSW | 210 | 0.01 | 6.12 | 0.038 0.000 | 140 16 | 0 0 |
| Napa-West Lower (Truchard) | 12/16/25 | 58.7 4.1 | 1423 | 39.9 1.2 | 0301 | 44.1 3.5 | 100 0 | 64 3 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 12/16/25 | 59.8 5.5 | 1349 | 41.0 1.2 | 0240 | 45.4 3.3 | 100 0 | 70 3 | 1.2 | 9.1 1.2 | 1337 | SSE | 158 | 0.00 | 2.35 | 0.017 0.003 | 80 5 | 0 0 |
| Toyon Remote 1 | 12/16/25 | 57.6 5.0 | 1330 | 41.0 2.6 | 0251 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 12/16/25 | 57.3 5.6 | 1327 | 41.3 2.3 | 0224 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 12/16/25 | 58.4 5.2 | 1325 | 41.3 2.9 | 0300 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 12/16/25 | 57.6 5.1 | 1329 | 40.5 1.2 | 0241 | 43.8 3.3 | 97 0 | 64 6 | 1.6 | 10.2 3.2 | 1353 | ESE | 119 | 0.00 | 5.78 | 0.030 0.007 | 143 19 | - |
| Carneros (Saintsbury) | 12/16/25 | 56.4 4.3 | 1344 | 37.8 1.6 | 0635 | 42.6 3.5 | 100 0 | 69 1 | 2.3 | 10.4 2.3 | 0900 | SE | 138 | 0.00 | 1.64 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 12/16/25 | 58.4 5.4 | 1357 | 39.1 0.7 | 0227 | 45.9 5.2 | - | - | 1.6 | 10.5 0.4 | 0931 | N | 353 | 0.00 | 5.64 | 0.026 0.001 | 120 8 | - |
| Suscol Mtn (Ranch 93) | 12/16/25 | 58.4 3.3 | 1350 | 39.4 3.9 | 0329 | 44.1 3.4 | 98 2 | 67 11 | 2.7 | 15.9 3.4 | 0718 | ESE | 110 | 0.00 | 6.03 | - | - | - |
| Suscol Upper (Ranch 92) | 12/16/25 | 60.1 6.5 | 1332 | 39.7 3.3 | 0658 | 45.0 4.4 | 100 0 | 67 7 | 1.7 | 15.1 14.9 | 0601 | NE | 43 | 0.00 | 5.76 | - | - | 0 0 |
| Stanly (Ranch 45) | 12/16/25 | 57.0 5.7 | 1258 | 38.1 1.2 | 0601 | 42.2 3.3 | 99 0 | 62 7 | 3.3 | 13.7 3.4 | 1318 | SE | 131 | 0.00 | 6.59 | 0.035 0.007 | 166 18 | 0 0 |
| Carneros Upper (Ranch 81) | 12/16/25 | 59.2 6.2 | 1355 | 40.5 1.5 | 0108 | 34.7 2.7 | - | - | 3.3 | 11.7 1.2 | 0843 | SE | 131 | - | - | - | - | - |
| Carneros (Mitsuko) | 12/16/25 | 58.7 5.3 | 1324 | 41.2 3.5 | 0626 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 12/16/25 | 57.8 5.8 | 1333 | 41.1 1.5 | 0402 | 44.3 3.1 | 100 0 | 66 6 | 1.5 | 8.9 1.8 | 0846 | SE | 140 | 0.00 | 4.77 | 0.025 0.004 | 108 4 | - |
| Carneros (Milton Rd) | 12/16/25 | 57.1 3.8 | 1425 | 41.4 0.9 | 0148 | 43.6 2.8 | 96 0 | 67 0 | - | - | - | - | 0.00 | 4.63 | - | - | - |
| Max | 65.4 | - | 50.0 | - | 50.2 | 100 | 70 | 3.3 | 15.9 | - | - | 0.01 | 8.40 | 0.038 | 166 | - | |
| Avg | - | - | - | - | 44.1 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 56.4 | - | 37.8 | - | 34.7 | 96 | 3 | 0.7 | 5.0 | - | - | 0.00 | 1.64 | 0.017 | 80 | - |