| 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 | 4/20/26 | 53.2 13.8 | 1341 | 42.2 2.1 | 0335 | - | - | - | - | - | - | - | 1.64 | 49.00 | - | - | 0 0 |
| Pope Valley (Weeks Lake) | 4/20/26 | 58.5 15.8 | 1355 | 39.4 0.8 | 0253 | 45.8 6.9 | 100 0 | 34 15 | 1.5 | 12.3 2.8 | 1653 | ESE | 113 | 0.95 | 25.00 | 0.032 0.135 | 102 426 | 40 10 |
| Dollarhide Base | 4/20/26 | 61.5 14.3 | 1127 | 48.6 4.3 | 0639 | 47.3 6.8 | 100 3 | 38 15 | 3.1 | 24.5 7.7 | 1732 | S | 184 | 0.81 | 22.18 | 0.050 0.149 | 151 443 | 50 10 |
| Dollarhide 1AS Remote | 4/20/26 | 60.4 15.0 | 1127 | 43.5 2.4 | 0221 | 47.3 6.4 | 94 1 | 53 29 | 2.0 | 17.8 2.7 | 1720 | SSW | 192 | - | - | - | - | 40 10 |
| Dollarhide 17B Remote | 4/20/26 | 60.3 16.8 | 1301 | 45.2 3.6 | 0207 | 47.9 5.7 | 100 1 | 57 32 | - | - | - | - | - | - | - | - | 50 10 |
| Dollarhide 18A Remote | 4/20/26 | 60.0 15.7 | 1308 | 41.8 3.6 | 0220 | 47.6 6.9 | 100 0 | 52 27 | - | - | - | - | - | - | - | - | 10 10 |
| Angwin | 4/20/26 | 50.4 15.5 | 1344 | 44.1 2.2 | 0517 | 41.5 15.3 | 100 43 | 39 22 | 6.0 | 20.5 2.9 | 1631 | SSE | 156 | 1.38 | 43.64 | 0.016 0.048 | 0 0 | 0 0 |
| Lower Angwin (Pioneer) | 4/20/26 | 53.8 14.7 | 1119 | 42.4 1.7 | 0315 | - | - | - | 3.1 | 16.1 1.9 | 1648 | S | 180 | - | - | - | - | 0 0 |
| Deer Park | 4/20/26 | 58.0 17.0 | 1236 | 47.5 0.7 | 0602 | 45.7 7.4 | 98 15 | 55 37 | 3.7 | 17.6 3.1 | 1613 | E | 90 | 1.04 | 27.42 | 0.035 0.108 | 79 307 | 10 10 |
| Lower Chiles Valley (Brown) | 4/20/26 | 63.8 8.0 | 1115 | 41.0 1.9 | 0233 | 44.6 9.4 | 96 0 | 35 22 | 2.2 | 20.0 3.3 | 1650 | SE | 146 | 1.01 | 24.69 | 0.065 0.111 | 200 363 | 0 0 |
| Moss Creek Vineyard/Reservior | 4/20/26 | 62.9 12.3 | 1125 | 50.6 7.7 | 0101 | 44.7 10.9 | 100 7 | 26 14 | - | - | - | - | 0.77 | 25.92 | - | - | 20 10 |
| Max | 63.8 | - | 50.6 | - | 47.9 | 100 | 57 | 6.0 | 24.5 | - | - | 1.64 | 49.00 | 0.065 | 200 | - | |
| Avg | - | - | - | - | 45.8 | - | - | 3.1 | - | - | - | - | - | - | - | - | |
| Min | 50.4 | - | 39.4 | - | 41.5 | 94 | 26 | 1.5 | 12.3 | - | - | 0.77 | 22.18 | 0.016 | 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 | 4/20/26 | 58.6 18.0 | 1215 | 44.8 1.6 | 0249 | 48.2 8.5 | 100 3 | 67 53 | - | - | - | - | 1.13 | 31.79 | - | - | 40 10 |
| Diamond Mtn (Schramsberg) | 4/20/26 | 55.2 16.2 | 1158 | 47.2 1.5 | 0414 | 46.4 8.4 | 100 24 | 60 46 | - | - | - | - | 1.00 | 30.18 | - | - | 0 0 |
| Diamond Mtn (McEachran) | 4/20/26 | 57.4 16.2 | 1206 | 46.7 1.6 | 0353 | 47.4 10.6 | 99 22 | 62 49 | - | - | - | - | - | - | - | - | 10 10 |
| St. Helena-North | 4/20/26 | 59.7 16.2 | 1228 | 44.7 0.1 | 0417 | 47.0 10.5 | 100 15 | 56 45 | 1.5 | 13.8 0.2 | 1412 | SE | 145 | 1.21 | 29.61 | 0.027 0.114 | 80 352 | 40 10 |
| St. Helena (NVV Office) | 4/20/26 | 61.4 16.7 | 1344 | 45.9 0.3 | 0420 | - | - | - | 0.9 | 8.3 1.3 | 1403 | SE | 125 | 1.01 | 27.39 | - | - | 80 10 |
| Tiara Fria (East St. Helena) | 4/20/26 | 62.0 14.0 | 1247 | 44.7 1.8 | 0301 | 47.0 7.3 | 96 4 | 51 35 | 2.3 | 13.4 3.7 | 1249 | SW | 222 | 0.85 | 25.21 | - | - | 40 10 |
| Rutherford Hill Estate | 4/20/26 | 61.0 15.8 | 1238 | 46.7 1.4 | 0615 | 46.5 6.2 | 100 12 | 45 28 | 1.5 | 14.0 0.2 | 1718 | E | 101 | 0.78 | 23.94 | 0.038 0.112 | 118 364 | 40 10 |
| Rutherford-North (Mee Ln) | 4/20/26 | 62.6 14.2 | 1255 | 41.5 1.3 | 0311 | 46.4 5.3 | 96 1 | 45 27 | 2.3 | 17.1 4.0 | 1704 | SE | 138 | 0.81 | 23.46 | 0.036 0.123 | 108 375 | 50 10 |
| Rutherford (STS) | 4/20/26 | 63.1 14.6 | 1229 | 42.3 1.6 | 0258 | 47.3 4.9 | 90 1 | 47 26 | 1.9 | 13.6 0.9 | 1305 | SSE | 163 | 0.78 | 24.69 | 0.038 0.138 | 121 455 | 80 10 |
| Oakville-NE (Ranch 88) | 4/20/26 | 63.9 13.8 | 1228 | 42.3 0.6 | 0250 | 46.3 7.7 | 99 7 | 36 21 | 1.1 | 14.5 6.0 | 1300 | SSW | 193 | 0.81 | 23.86 | 0.042 0.133 | 129 403 | 0 0 |
| OV561-East | 4/20/26 | 62.7 14.0 | 1226 | 43.0 1.0 | 0255 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| Oakville | 4/20/26 | 63.8 12.1 | 1237 | 43.0 0.9 | 0252 | 46.8 7.1 | 97 0 | 36 20 | 2.5 | 19.1 2.0 | 1256 | S | 174 | 0.59 | 24.18 | 0.051 0.136 | 156 412 | 40 10 |
| OV518-West | 4/20/26 | 64.1 11.1 | 1216 | 43.9 0.4 | 0408 | - | - | - | - | - | - | - | - | - | - | - | 10 10 |
| To Kalon Remote (TKKE) | 4/20/26 | 64.2 13.3 | 1231 | 41.6 1.1 | 0306 | - | - | - | - | - | - | - | - | - | - | - | 80 10 |
| To Kalon | 4/20/26 | 63.9 12.0 | 1230 | 42.2 1.9 | 0311 | 47.6 7.4 | 98 3 | 40 23 | 2.4 | 15.6 0.8 | 1256 | S | 181 | 0.89 | 26.61 | 0.044 0.126 | 134 391 | 10 10 |
| To Kalon Remote (TKN5) | 4/20/26 | 64.4 12.5 | 1215 | 42.4 1.2 | 0310 | - | - | - | - | - | - | - | - | - | - | - | 60 10 |
| Yountville (Ranch 67) | 4/20/26 | 63.9 9.8 | 1233 | 43.3 0.7 | 0301 | 45.9 7.0 | 96 2 | 34 18 | 2.5 | 16.2 0.7 | 1700 | ESE | 105 | 0.83 | 22.57 | 0.061 0.120 | 235 352 | 40 10 |
| Stags Leap Dist (Silverado Vineyards) | 4/20/26 | 63.5 9.7 | 1233 | 42.8 0.4 | 0306 | 45.8 6.6 | 95 1 | 33 21 | 1.6 | 15.4 0.5 | 1639 | ESE | 123 | 0.85 | 26.68 | 0.048 0.124 | 142 398 | 20 10 |
| Borreo (Soda Canyon) | 4/20/26 | 61.9 9.3 | 1139 | 43.3 0.1 | 0302 | 45.8 7.9 | 97 5 | 32 15 | 1.4 | 14.0 3.1 | 1259 | SE | 144 | 0.86 | 26.58 | 0.048 0.121 | 149 438 | 10 10 |
| Wappo Hill Floor | 4/20/26 | 65.1 9.9 | 1114 | 44.0 1.6 | 0413 | 47.1 7.1 | 100 0 | 32 15 | 2.6 | 15.5 0.1 | 1304 | S | 178 | 0.83 | 25.91 | 0.049 0.127 | 139 397 | 80 10 |
| Stags Leap Dist (Chimney Rock) | 4/20/26 | 64.8 8.8 | 1159 | 44.1 1.4 | 0320 | 48.1 6.0 | 99 1 | 35 13 | 2.4 | 14.9 0.5 | 1648 | SSE | 160 | 0.87 | 25.24 | 0.047 0.116 | 128 372 | 40 10 |
| Yountville-South (Ranch 87) | 4/20/26 | 66.5 8.1 | 1121 | 43.5 0.4 | 0253 | 47.7 7.5 | 100 0 | 35 16 | 1.8 | 14.2 0.2 | 1248 | SSW | 202 | 0.86 | 26.53 | 0.049 0.128 | 150 402 | 70 10 |
| Yountville-SE (Ranch 85) | 4/20/26 | 64.8 9.6 | 1154 | 44.3 0.2 | 0258 | 47.6 6.7 | 100 0 | 32 15 | 1.7 | 12.4 0.9 | 1640 | S | 170 | 0.85 | 24.80 | - | 0 0 | 20 10 |
| Oak Knoll-East (Ranch 53) | 4/20/26 | 66.2 8.2 | 1122 | 44.3 0.5 | 0302 | 46.4 7.7 | 96 3 | 32 16 | 1.7 | 15.7 3.8 | 1251 | S | 179 | 0.89 | 23.32 | 0.052 0.126 | 156 428 | 50 10 |
| Napa-NW (Ranch 54) | 4/20/26 | 66.9 9.8 | 1123 | 45.9 0.5 | 0639 | 47.1 9.5 | 100 14 | 33 18 | 0.8 | 13.6 4.5 | 1239 | WSW | 241 | 0.92 | 25.78 | - | 0 0 | 80 10 |
| Napa-North (Ranch 29) | 4/20/26 | 66.5 7.2 | 1124 | 46.6 0.7 | 0620 | 47.9 6.8 | 100 0 | 30 16 | 1.0 | 18.7 5.7 | 1249 | S | 171 | 0.90 | 23.39 | 0.032 0.094 | 95 261 | 50 10 |
| Max | 66.9 | - | 47.2 | - | 48.2 | 100 | 67 | 2.6 | 19.1 | - | - | 1.21 | 31.79 | 0.061 | 235 | - | |
| Avg | - | - | - | - | 47.0 | - | - | 1.8 | - | - | - | - | - | - | - | - | |
| Min | 55.2 | - | 41.5 | - | 45.8 | 90 | 30 | 0.8 | 8.3 | - | - | 0.59 | 22.57 | 0.027 | 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 | 4/20/26 | 56.3 12.0 | 1228 | 47.3 1.7 | 0258 | 45.0 17.8 | 100 43 | 39 26 | 3.7 | 17.9 3.9 | 1707 | SSE | 168 | 1.21 | 33.13 | 0.096 0.126 | 563 367 | 0 0 |
| Mount George (Napa East) | 4/20/26 | 64.3 7.8 | 1127 | 47.1 1.2 | 0636 | 48.5 8.3 | 99 1 | 25 14 | 1.5 | 18.3 6.8 | 1038 | ENE | 68 | 0.87 | 15.18 | 0.060 0.102 | 179 385 | 40 10 |
| Napa-East (Palmaz 300') | 4/20/26 | 64.9 9.7 | 1131 | 45.9 0.2 | 0544 | 47.3 8.2 | 100 6 | 24 15 | 1.8 | 18.8 5.4 | 1052 | E | 88 | 0.85 | 21.49 | 0.057 0.089 | 151 306 | 50 10 |
| Napa-East (Palmaz 1200') | 4/20/26 | 60.1 8.0 | 1136 | 45.0 2.2 | 0630 | 40.6 5.7 | 100 19 | 13 0 | 1.9 | 15.6 3.1 | 1646 | NW | 318 | - | - | 0.054 0.101 | 145 398 | 0 0 |
| Napa-East (Palmaz 1400') | 4/20/26 | 58.1 10.2 | 1123 | 47.6 4.8 | 0425 | 45.2 9.5 | 100 16 | 30 14 | 2.6 | 16.5 2.2 | 1300 | WSW | 245 | 0.96 | 28.88 | 0.048 0.108 | 153 381 | 0 0 |
| Wooden Valley | 4/20/26 | 60.3 10.2 | 1245 | 43.9 3.5 | 0127 | 45.5 10.3 | 96 2 | 38 25 | 1.7 | 15.3 0.6 | 1622 | SSW | 199 | 0.83 | 27.31 | 0.051 0.131 | 169 420 | 0 0 |
| Napa-West Upper (Truchard) | 4/20/26 | 65.2 8.4 | 1045 | 47.7 1.5 | 0450 | 3.8 36.5 | 100 6 | 0 13 | 3.2 | 20.6 4.2 | 1244 | S | 172 | 0.89 | 23.08 | 0.085 0.107 | 162 410 | 0 10 |
| Napa-West Lower (Truchard) | 4/20/26 | 66.9 9.2 | 1048 | 41.5 0.1 | 0543 | 47.2 7.5 | 96 4 | 33 19 | - | - | - | - | - | - | - | - | 80 10 |
| Napa-South (Toyon Farms) | 4/20/26 | 66.4 6.3 | 1127 | 47.4 0.2 | 0614 | 50.5 5.7 | 100 1 | 43 26 | 1.3 | 17.5 3.2 | 1628 | S | 173 | 0.85 | 16.80 | 0.028 0.074 | 103 171 | 20 10 |
| Toyon Remote 1 | 4/20/26 | 67.0 6.6 | 1049 | 41.0 0.1 | 0614 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 2 | 4/20/26 | 67.6 4.9 | 1048 | 43.4 1.2 | 0348 | - | - | - | - | - | - | - | - | - | - | - | - |
| Toyon Remote 3 | 4/20/26 | 66.9 7.0 | 1054 | 43.5 0.4 | 0608 | - | - | - | - | - | - | - | - | - | - | - | - |
| Dealy Lane (Ranch 80) | 4/20/26 | 65.4 8.2 | 1049 | 46.0 0.5 | 0643 | 48.0 7.6 | 96 4 | 35 21 | 2.4 | 13.7 0.8 | 1054 | SSE | 165 | 0.91 | 22.48 | 0.057 0.115 | 177 397 | 80 10 |
| Carneros (Saintsbury) | 4/20/26 | 65.7 5.3 | 1133 | 46.2 2.4 | 0545 | 47.9 5.8 | 100 4 | 36 23 | 2.5 | 17.9 4.7 | 1629 | SSE | 167 | 0.54 | 8.17 | - | - | 0 10 |
| Suscol Lower (Ranch 35) | 4/20/26 | 65.7 6.5 | 1103 | 45.5 0.9 | 0527 | 48.3 7.4 | - | - | 3.7 | 17.5 1.0 | 0956 | ESE | 117 | 0.94 | 21.28 | 0.063 0.108 | 174 340 | 10 10 |
| Suscol Mtn (Ranch 93) | 4/20/26 | 65.2 8.3 | 1118 | 49.6 0.6 | 0350 | 45.9 8.5 | 99 16 | 32 22 | 5.1 | 22.9 6.1 | 1129 | ESE | 121 | 1.01 | 17.12 | - | - | 0 10 |
| Suscol Upper (Ranch 92) | 4/20/26 | 65.1 6.3 | 1118 | 49.2 1.1 | 0401 | 25.9 12.5 | 100 15 | 3 5 | 1.7 | 23.9 7.9 | 1749 | SW | 232 | 0.94 | 20.93 | - | - | 0 10 |
| Stanly (Ranch 45) | 4/20/26 | 65.5 6.8 | 1130 | 46.6 3.2 | 0527 | 47.7 5.4 | 97 2 | 35 26 | 4.5 | 17.0 1.4 | 1644 | SW | 219 | 0.05 | 22.23 | 0.065 0.129 | 187 423 | 50 10 |
| Carneros Upper (Ranch 81) | 4/20/26 | 65.3 7.8 | 1115 | 50.8 0.9 | 0710 | 22.2 16.5 | - | - | 3.7 | 18.3 0.3 | 1737 | SW | 229 | - | - | - | - | 0 10 |
| Carneros (Mitsuko) | 4/20/26 | 67.6 5.4 | 1053 | 41.2 0.6 | 0606 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| Carneros Lower (Ranch 81) | 4/20/26 | 64.5 8.8 | 1115 | 44.6 1.1 | 0553 | 10.0 30.5 | 100 0 | 0 0 | 1.5 | 12.7 0.0 | 1622 | S | 172 | 0.33 | 18.29 | 0.054 0.091 | 131 363 | 0 10 |
| Carneros (Milton Rd) | 4/20/26 | 65.2 7.1 | 1131 | 45.6 3.6 | 0612 | 48.6 6.3 | 94 2 | 37 29 | - | - | - | - | 0.00 | 18.04 | - | - | 0 10 |
| Max | 67.6 | - | 50.8 | - | 50.5 | 100 | 43 | 5.1 | 23.9 | - | - | 1.21 | 33.13 | 0.096 | 563 | - | |
| Avg | - | - | - | - | 39.9 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 56.3 | - | 41.0 | - | 3.8 | 94 | 0 | 1.3 | 12.7 | - | - | 0.00 | 8.17 | 0.028 | 103 | - |