Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/18/26 3:43 AM PDT
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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)
Upper Rincon Valley 8/17/26 81.0   3.7 1548 52.2   4.8 0426 53.1   0.0 98   0 34   3 1.5   0.0 9.2   1.3 1313 SE | 140 0.00 0.01 0.126   0.014 393   44 80   20
Lower Bennett Valley 8/17/26 83.7   1.7 1429 53.9   1.7 0013 55.0   0.0 100   0 35   0 3.7   0.6 11.4   0.5 1208 NW | 320 0.00 0.00 0.170   0.012 538   29 100   20
Kenwood (Wildwood) 8/17/26 88.5   0.8 1617 54.1   1.0 0231 54.0   0.3 97   3 29   2 3.3   0.7 11.1   0.6 1718 NNW | 347 0.00 0.00 0.173   0.010 533   27 20   10
Sonoma Valley (Bedrock) 8/17/26 85.1   0.0 1540 54.0   1.9 0401 52.6   0.3 92   4 31   3 - - - - 0.00 0.00 - - 100   10
Sonoma-West (Arnold) 8/17/26 88.0   0.5 1451 52.4   2.0 0101 53.2   1.0 92   3 30   2 2.9   0.3 15.3   3.9 1251 SE | 129 0.00 0.00 0.204   0.001 608   10 20   10
Sonoma Valley HS 8/17/26 83.0   1.7 1733 54.3   0.4 0331 56.4   0.1 98   2 43   1 2.3   0.0 8.0   2.8 1844 S | 178 0.00 0.00 0.168   0.002 535   18 80   20
Sonoma East (Bundschu01) 8/17/26 81.4   0.8 1600 51.8   2.4 0357 54.0   0.2 93   1 41   0 3.2   0.0 14.5   0.2 1629 SSE | 155 0.00 0.00 0.171   0.008 519   33 100   0
Schellville (Sasaki) 2/4/26 70.2 1502 39.9 0001 48.4 98 51 2.9 11.8 1113 NE | 34 0.00 0.00 - - 0
Sonoma-SE (Napoli) 8/17/26 83.0   0.0 1550 52.5   1.7 0353 54.1   0.1 92   1 41   3 2.4   0.1 11.5   1.0 1823 SW | 214 0.00 0.00 - - 100   0
Ricci Vineyards (Carneros) 8/17/26 81.0   0.0 1538 54.9   0.2 0321 54.6   0.2 94   1 43   1 5.2   1.6 16.4   3.1 2048 WNW | 299 0.00 0.01 0.173   0.003 526   0 100   0
Carneros (Ranch 71) 8/17/26 78.7   0.4 1549 54.0   0.8 0355 54.6   0.3 95   5 47   1 4.0   1.3 16.4   5.8 1848 W | 274 0.00 0.00 0.161   0.004 517   17 100   10
Carneros Upper (Ranch 81) 8/17/26 80.7   0.3 1606 54.0   0.6 0409 44.3   26.0 - - 7.4   3.2 17.5   0.5 2026 W | 266 - - - - 100   10
Carneros Lower (Ranch 81) 8/17/26 80.0   0.2 1551 54.8   0.4 0405 55.4   0.3 93   2 48   0 1.7   0.0 12.3   0.1 1356 S | 173 0.00 0.00 0.149   0.005 490   16 100   0
Rohnert Park-West (Stony Point) 8/17/26 77.0   6.6 1443 55.1   0.2 0205 56.6   0.4 99   0 52   11 2.7   0.7 16.3   2.1 1648 W | 279 0.00 0.00 - - 0   0
Cartograph Wines Base 8/17/26 76.1   5.2 1420 54.3   0.2 0202 56.4   0.3 99   0 56   5 4.0   0.6 21.5   1.4 1653 S | 181 0.00 0.07 0.138   0.013 495   39 0   0
Cartograph Wines Remote 8/17/26 75.7   5.4 1408 55.0   0.1 0143 - - - - - - - - - - - 10   10
Rice-Spivak Vineyard 8/17/26 78.3   6.4 1414 54.8   0.2 0141 - - - - - - - - - - - 0   0
Penngrove (Asellus) 8/17/26 82.1   3.5 1450 54.8   0.3 0158 54.6   0.5 96   1 34   6 3.4   0.9 13.7   0.5 1343 NW | 306 0.00 0.00 - - 60   10
Petaluma (Ranch 10) 8/17/26 85.7   2.9 1527 55.6   0.2 0307 54.8   0.2 93   1 32   3 3.2   0.9 12.0   0.3 1829 NNW | 343 0.00 0.00 0.169   0.001 532   3 80   10
Max   88.5 - 55.6 - 56.6 100 56 7.4 21.5 - - 0.00 0.07 0.204 608 -
Avg   - - - - 54.0 - - 3.4 - - - - - - - -
Min   75.7 - 51.8 - 44.3 92 29 1.5 8.0 - - 0.00 0.00 0.126 393 -