| 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 | 1/4/26 | 49.7 0.9 | 0018 | 43.2 4.9 | 2031 | - | - | - | - | - | - | - | 1.56 | 32.25 | - | - | - |
| Pope Valley (Weeks Lake) | 1/4/26 | 53.6 3.9 | 0011 | 42.1 9.0 | 1951 | 45.8 3.7 | 100 0 | 74 6 | 3.0 | 21.9 1.3 | 0351 | WSW | 238 | 0.40 | 15.91 | 0.021 0.010 | 60 19 | 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 | 1/4/26 | 54.6 4.0 | 0018 | 46.8 5.7 | 2242 | 48.6 3.2 | 98 1 | 84 12 | 5.4 | 33.4 0.7 | 0400 | WSW | 241 | 0.49 | 13.79 | 0.023 0.010 | 79 10 | - |
| Dollarhide 1AS Remote | 1/4/26 | 54.9 3.1 | 1515 | 43.5 9.2 | 2254 | 48.1 3.2 | 96 1 | 83 12 | 3.8 | 24.5 6.7 | 0107 | SE | 142 | - | - | - | - | - |
| Dollarhide 17B Remote | 1/4/26 | 54.4 5.0 | 1510 | 43.5 9.3 | 2328 | 48.6 3.5 | 99 0 | 85 12 | - | - | - | - | - | - | - | - | - |
| Dollarhide 18A Remote | 1/4/26 | 54.6 3.3 | 0143 | 42.3 9.8 | 2311 | 47.8 3.2 | 100 2 | 82 11 | - | - | - | - | - | - | - | - | - |
| Angwin | 1/4/26 | 47.2 2.9 | 0012 | 41.3 5.1 | 2312 | 44.0 3.3 | 100 0 | 100 17 | 6.6 | 26.0 4.6 | 0410 | S | 172 | 0.75 | 29.99 | 0.000 0.002 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 1/4/26 | 49.3 4.3 | 0002 | 42.9 5.7 | 1931 | - | - | - | 4.5 | 17.8 8.2 | 0204 | SW | 219 | - | - | - | - | - |
| Deer Park | 1/4/26 | 54.9 4.5 | 1507 | 46.2 5.7 | 2206 | 47.6 2.8 | 98 1 | 80 20 | 3.5 | 18.8 6.0 | 0348 | NW | 312 | 0.66 | 17.20 | 0.018 0.020 | 60 42 | - |
| Lower Chiles Valley (Brown) | 1/4/26 | 54.1 2.5 | 0218 | 46.8 5.4 | 2001 | 46.4 3.1 | 92 2 | 75 5 | 3.0 | 22.5 0.3 | 0146 | W | 280 | 0.50 | 13.19 | 0.024 0.006 | 67 11 | 0 0 |
| Moss Creek Vineyard/Reservior | 1/4/26 | 53.3 5.7 | 0019 | 47.0 4.7 | 1939 | 47.4 2.5 | 95 1 | 79 9 | - | - | - | - | 2.02 | 17.93 | - | - | - |
| Max | 54.9 | - | 47.0 | - | 48.6 | 100 | 100 | 6.6 | 33.4 | - | - | 2.02 | 32.25 | 0.024 | 79 | - | |
| Avg | - | - | - | - | 47.1 | - | - | 4.2 | - | - | - | - | - | - | - | - | |
| Min | 47.2 | - | 41.3 | - | 44.0 | 92 | 74 | 3.0 | 17.8 | - | - | 0.40 | 13.19 | 0.000 | 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 | 12/21/25 | 60.3 0.8 | 1104 | 56.9 0.7 | 1918 | 58.1 0.7 | 100 0 | 94 6 | - | - | - | - | 2.50 | 11.63 | - | - | - |
| Fotsch (Maple Lane) | 1/4/26 | 56.4 4.4 | 0259 | 45.3 6.9 | 2342 | 48.6 2.2 | 97 0 | 73 14 | 2.4 | 26.0 2.4 | 0329 | W | 261 | 0.62 | 18.90 | - | - | - |
| Diamond Mtn (Schramsberg) | 1/4/26 | 53.2 3.5 | 1237 | 44.8 6.2 | 2331 | 48.0 2.5 | 100 0 | 80 9 | - | - | - | - | 0.62 | 19.18 | - | - | - |
| Diamond Mtn (McEachran) | 1/4/26 | 54.1 3.3 | 0232 | 45.1 6.6 | 2336 | 48.7 2.7 | 99 0 | 82 13 | - | - | - | - | - | - | - | - | - |
| St. Helena-North | 1/4/26 | 55.4 4.9 | 0323 | 44.1 8.1 | 2321 | 49.2 2.0 | 100 0 | 74 15 | 1.6 | 16.2 3.9 | 0321 | S | 174 | 0.82 | 19.17 | 0.014 0.015 | 54 19 | - |
| St. Helena (NVV Office) | 1/4/26 | 56.6 4.2 | 1514 | 44.2 8.3 | 2350 | - | - | - | 1.2 | 14.9 2.3 | 0249 | S | 178 | 0.56 | 16.81 | - | - | - |
| Tiara Fria (East St. Helena) | 1/4/26 | 56.8 4.7 | 1523 | 43.3 10.1 | 2356 | 48.9 2.7 | 97 0 | 71 12 | 2.5 | 20.8 0.1 | 0356 | W | 280 | 0.41 | 15.55 | - | - | - |
| Rutherford Hill Estate | 1/4/26 | 58.6 3.9 | 1531 | 47.0 5.3 | 2205 | 48.9 3.2 | 100 0 | 73 13 | 2.2 | 16.9 1.8 | 0216 | SE | 127 | 0.00 | 4.15 | 0.018 0.013 | 84 35 | 0 0 |
| Rutherford-North (Mee Ln) | 1/4/26 | 55.5 7.5 | 0337 | 39.7 9.1 | 2339 | 46.7 2.9 | 100 2 | 71 16 | 3.5 | 23.2 3.1 | 0402 | WSW | 244 | 0.23 | 14.13 | 0.021 0.023 | 74 35 | 0 0 |
| Rutherford (STS) | 12/19/25 | 58.0 1.5 | 1314 | 50.6 6.1 | 0008 | 49.5 3.1 | 84 6 | 79 2 | 3.6 | 16.7 9.8 | 1453 | ESE | 111 | 0.70 | 6.72 | 0.023 0.005 | 33 38 | - |
| Oakville-NE (Ranch 88) | 1/4/26 | 56.2 6.7 | 1331 | 45.7 7.4 | 2254 | 48.8 2.6 | 95 0 | 82 27 | 2.0 | 17.9 2.0 | 0408 | WSW | 241 | 0.27 | 14.81 | 0.020 0.027 | 84 59 | 0 0 |
| OV561-East | 1/4/26 | 56.7 5.2 | 1332 | 45.9 7.5 | 2249 | - | - | - | - | - | - | - | - | - | - | - | - |
| Oakville | 1/4/26 | 55.7 7.4 | 1331 | 45.6 7.5 | 1955 | 49.1 2.6 | 97 0 | 75 20 | 4.1 | 17.6 11.5 | 0304 | S | 187 | 0.32 | 15.25 | 0.022 0.027 | 92 50 | - |
| OV518-West | 1/4/26 | 56.1 7.3 | 1331 | 45.4 7.9 | 2006 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon Remote (TKKE) | 1/4/26 | 57.2 6.1 | 1430 | 44.6 8.6 | 2341 | - | - | - | - | - | - | - | - | - | - | - | - |
| To Kalon | 1/4/26 | 57.0 6.1 | 0103 | 44.9 8.5 | 1955 | 49.0 2.7 | 98 1 | 74 15 | 3.4 | 19.6 4.1 | 0133 | SE | 146 | 0.38 | 16.13 | 0.021 0.025 | 70 41 | - |
| To Kalon Remote (TKN5) | 1/4/26 | 57.1 5.7 | 1433 | 44.8 9.2 | 1958 | - | - | - | - | - | - | - | - | - | - | - | - |
| Yountville (Ranch 67) | 1/4/26 | 54.6 7.2 | 0001 | 46.6 6.1 | 2305 | 49.2 2.3 | 96 0 | 79 17 | 3.8 | 15.8 6.6 | 0303 | SSE | 168 | 0.53 | 14.27 | 0.025 0.018 | 124 28 | - |
| Stags Leap Dist (Silverado Vineyards) | 1/4/26 | 54.5 6.9 | 0003 | 47.8 4.8 | 1910 | 48.9 2.3 | 94 0 | 85 22 | 4.4 | 16.1 2.8 | 0154 | SE | 128 | 0.65 | 17.48 | 0.023 0.020 | 77 54 | - |
| Borreo (Soda Canyon) | 1/4/26 | 53.3 7.2 | 1455 | 46.0 5.2 | 1947 | 48.8 2.3 | 98 0 | 89 22 | 1.8 | 15.0 1.3 | 0300 | SSW | 193 | 0.80 | 17.90 | 0.016 0.016 | 74 46 | - |
| Wappo Hill Floor | 1/4/26 | 55.2 7.9 | 1509 | 46.8 5.6 | 2210 | 50.8 2.3 | 100 0 | 86 22 | 2.7 | 11.9 9.5 | 0305 | SSW | 207 | 1.03 | 17.31 | 0.016 0.018 | 73 44 | - |
| Stags Leap Dist (Chimney Rock) | 1/4/26 | 57.5 4.8 | 1451 | 47.2 5.8 | 2154 | - | - | - | 3.1 | 16.0 9.6 | 0300 | S | 182 | 0.75 | 15.40 | 0.041 0.008 | 69 37 | 0 0 |
| Yountville-South (Ranch 87) | 1/4/26 | 56.3 6.5 | 1444 | 45.0 8.1 | 2234 | 51.0 2.4 | 100 0 | 86 21 | 2.6 | 15.6 2.2 | 0301 | S | 176 | 0.92 | 17.28 | 0.017 0.017 | 73 39 | - |
| Yountville-SE (Ranch 85) | 1/4/26 | 56.8 6.2 | 1453 | 48.1 5.3 | 2015 | 50.8 2.4 | 100 0 | 85 19 | 2.3 | 10.5 5.6 | 0305 | SSW | 203 | 0.82 | 16.30 | - | 0 0 | 0 0 |
| Oak Knoll-East (Ranch 53) | 1/4/26 | 57.2 5.3 | 1457 | 45.8 7.1 | 2230 | 50.0 2.2 | 96 0 | 79 14 | 2.6 | 14.1 6.9 | 0247 | SE | 140 | 0.59 | 15.25 | 0.018 0.020 | 75 43 | - |
| Napa-NW (Ranch 54) | 1/4/26 | 55.9 6.0 | 1455 | 46.0 6.8 | 2239 | 50.9 2.0 | 100 0 | 83 17 | 2.2 | 15.0 5.0 | 0251 | SE | 136 | 0.65 | 16.25 | - | 0 0 | 0 0 |
| Napa-North (Ranch 29) | 12/30/25 | 57.2 4.9 | 1404 | 30.1 0.7 | 0731 | 37.8 1.0 | 100 0 | 57 19 | 0.4 | 5.0 2.2 | 1447 | SW | 225 | 0.00 | 11.12 | 0.019 0.014 | 83 36 | - |
| Max | 58.6 | - | 48.1 | - | 51.0 | 100 | 89 | 4.4 | 26.0 | - | - | 1.03 | 19.18 | 0.041 | 124 | - | |
| Avg | - | - | - | - | 49.2 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 53.2 | - | 39.7 | - | 46.7 | 94 | 71 | 1.2 | 10.5 | - | - | 0.00 | 4.15 | 0.014 | 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 | 1/4/26 | 50.4 3.5 | 0001 | 43.7 5.7 | 1915 | 46.7 3.3 | 100 0 | 92 13 | 2.4 | 16.4 4.2 | 0054 | S | 171 | 0.70 | 21.40 | 0.011 0.003 | 44 12 | 0 0 |
| Mount George (Napa East) | 1/4/26 | 58.7 5.4 | 0026 | 48.4 4.1 | 2238 | 52.2 0.5 | 99 3 | 81 9 | 1.6 | 18.9 4.2 | 0053 | S | 175 | 0.59 | 6.47 | 0.019 0.020 | 82 58 | - |
| Napa-East (Palmaz 300') | 1/4/26 | 56.3 6.5 | 1408 | 46.6 6.1 | 2207 | 49.6 1.9 | 100 0 | 77 8 | 1.9 | 16.9 6.7 | 0154 | SE | 139 | 0.48 | 13.46 | 0.016 0.021 | 66 51 | - |
| Napa-East (Palmaz 1200') | 1/4/26 | 52.4 4.0 | 0053 | 45.1 4.6 | 2034 | 40.4 1.9 | 100 0 | 4 1 | 2.1 | 15.5 6.4 | 0035 | W | 271 | - | - | 0.022 0.017 | 54 25 | - |
| Napa-East (Palmaz 1400') | 1/4/26 | 51.2 3.6 | 0020 | 45.2 3.8 | 2021 | 47.9 2.6 | 100 0 | 100 17 | 4.1 | 23.7 3.7 | 0019 | S | 183 | 0.60 | 18.52 | 0.010 0.007 | 53 30 | - |
| 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) | 1/4/26 | 54.5 6.5 | 1449 | 46.5 4.6 | 2145 | - | - | - | 3.7 | 23.3 5.1 | 0051 | SSW | 207 | 1.08 | 14.81 | 0.062 0.008 | 73 57 | 0 0 |
| Napa-West Lower (Truchard) | 1/4/26 | 53.9 8.0 | 1445 | 39.9 10.8 | 2215 | 47.6 3.8 | 100 4 | 89 17 | - | - | - | - | - | - | - | - | 0 0 |
| Napa-South (Toyon Farms) | 1/4/26 | 56.7 5.1 | 1342 | 47.0 6.3 | 2201 | 51.6 2.5 | 100 0 | 97 17 | 2.7 | 18.8 3.2 | 0217 | SSE | 168 | 1.07 | 9.14 | 0.007 0.015 | 42 48 | 0 0 |
| Toyon Remote 1 | 1/4/26 | 56.7 5.5 | 1340 | 43.5 9.6 | 2209 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 1/4/26 | 56.9 5.2 | 1343 | 43.9 9.6 | 2211 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 1/4/26 | 57.3 5.3 | 1340 | 43.3 9.8 | 2208 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 1/4/26 | 55.8 6.4 | 1341 | 43.5 9.4 | 2207 | 49.4 2.9 | 96 2 | 85 15 | 1.8 | 17.1 2.2 | 0050 | SW | 231 | 1.19 | 14.14 | 0.018 0.021 | 79 65 | - |
| Carneros (Saintsbury) | 1/4/26 | 53.9 7.5 | 1343 | 44.3 7.0 | 2227 | 49.0 2.9 | 100 0 | 90 17 | 3.5 | 18.4 5.4 | 0306 | SSW | 201 | 0.00 | 1.65 | - | - | 0 0 |
| Suscol Lower (Ranch 35) | 1/4/26 | 55.7 5.6 | 0015 | 46.7 6.4 | 1947 | 49.7 1.8 | - | - | 4.6 | 19.5 3.8 | 0041 | SSE | 158 | 0.90 | 13.48 | 0.020 0.026 | 71 52 | - |
| Suscol Mtn (Ranch 93) | 1/4/26 | 53.1 4.9 | 0046 | 47.2 3.6 | 1951 | 48.8 1.3 | 100 2 | 83 10 | 6.0 | 31.0 1.5 | 0154 | SSW | 198 | 0.00 | 9.81 | - | - | - |
| Suscol Upper (Ranch 92) | 1/4/26 | 53.8 6.2 | 1412 | 47.4 4.0 | 1955 | 42.6 4.9 | 100 0 | 3 0 | 4.4 | 25.7 0.8 | 0156 | SE | 124 | 0.75 | 12.94 | - | - | 0 0 |
| Stanly (Ranch 45) | 1/4/26 | 53.6 7.1 | 0021 | 46.0 5.9 | 2146 | 47.8 3.2 | 95 2 | 88 13 | 4.7 | 23.9 0.3 | 0247 | S | 178 | 1.00 | 14.65 | 0.019 0.026 | 80 69 | 0 0 |
| Carneros Upper (Ranch 81) | 1/4/26 | 55.1 5.9 | 1457 | 48.6 3.7 | 2108 | 5.2 25.4 | - | - | 5.9 | 23.4 8.0 | 0245 | S | 191 | - | - | - | - | - |
| Carneros (Mitsuko) | 1/4/26 | 57.0 5.2 | 1335 | 41.7 11.6 | 2208 | - | - | - | - | - | - | - | - | - | - | - | - |
| Carneros Lower (Ranch 81) | 1/4/26 | 54.8 7.0 | 1337 | 44.5 7.8 | 2205 | -56.3 78.2 | 100 0 | 0 0 | 1.8 | 18.5 1.8 | 0205 | S | 178 | 1.20 | 12.19 | 0.045 0.002 | 54 44 | - |
| Carneros (Milton Rd) | 1/4/26 | 58.3 3.4 | 1346 | 45.6 8.4 | 2147 | 49.8 2.5 | 95 3 | 83 10 | - | - | - | - | 0.00 | 5.74 | - | - | - |
| Max | 58.7 | - | 48.6 | - | 52.2 | 100 | 100 | 6.0 | 31.0 | - | - | 1.20 | 21.40 | 0.062 | 82 | - | |
| Avg | - | - | - | - | 38.9 | - | - | 3.4 | - | - | - | - | - | - | - | - | |
| Min | 50.4 | - | 39.9 | - | -56.3 | 95 | 0 | 1.6 | 15.5 | - | - | 0.00 | 1.65 | 0.007 | 42 | - |