Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 9/21/26 5:57 PM 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 9/20/26 72.1   11.2 1456 50.0   0.4 0654 52.0   1.1 98   3 52   21 1.3   0.2 7.1   2.1 1100 SSE | 149 0.00 0.02 0.068   0.049 220   150 100   0
Lower Bennett Valley 9/20/26 74.2   11.8 1447 52.3   10.8 0122 53.6   2.6 100   0 51   22 2.8   0.7 11.0   2.6 1345 S | 181 0.00 0.39 0.091   0.058 294   191 80   10
Kenwood (Wildwood) 9/20/26 73.7   13.3 1441 50.8   6.0 0330 53.0   2.4 100   0 51   23 1.9   0.5 11.8   0.2 1527 WSW | 256 0.00 0.21 0.092   0.054 326   118 50   10
Sonoma Valley (Bedrock) 9/20/26 69.6   18.6 1347 46.8   2.5 0414 50.7   2.1 96   0 55   33 - - - - 0.00 0.29 - - 80   10
Sonoma-West (Arnold) 9/20/26 69.1   20.1 1337 48.0   2.3 0614 51.3   2.4 91   1 58   35 2.0   0.1 10.8   4.4 1510 ESE | 108 0.00 0.35 0.086   0.086 299   209 70   10
Sonoma Valley HS 9/20/26 68.4   18.2 1339 50.4   2.8 0547 54.7   1.0 100   0 66   35 1.8   0.1 7.2   4.8 1858 SE | 134 0.00 0.01 0.077   0.064 273   182 80   10
Sonoma East (Bundschu01) 9/20/26 69.1   13.3 1345 49.4   4.2 0548 52.7   1.9 95   0 58   24 3.0   0.3 13.2   1.1 1506 S | 182 0.00 0.23 0.085   0.063 284   177 90   10
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) 9/20/26 70.4   12.5 1401 50.1   4.8 0325 52.8   1.9 93   1 55   20 1.8   0.1 10.1   2.3 1158 SSE | 153 0.00 0.18 - - 90   10
Ricci Vineyards (Carneros) 9/20/26 67.7   12.7 1314 48.7   2.6 0336 52.8   1.2 95   1 60   23 2.8   0.5 11.8   4.7 1547 SE | 129 0.00 0.12 0.082   0.066 277   186 100   0
Carneros (Ranch 71) 9/20/26 66.1   12.5 1450 52.4   0.5 0340 53.3   0.1 95   0 64   25 2.1   1.1 9.8   11.7 1504 ESE | 116 0.00 0.07 0.073   0.063 260   173 70   10
Carneros Upper (Ranch 81) 9/20/26 67.8   12.0 1340 52.5   1.4 0522 39.0   10.3 - - 4.1   1.5 17.2   7.5 1504 S | 184 - - - - 70   10
Carneros Lower (Ranch 81) 9/20/26 67.8   12.0 1452 51.1   3.5 0536 53.2   5.4 94   6 63   62 1.4   0.1 12.6   0.1 1455 SSE | 147 0.00 0.01 0.013   0.006 7   5 70   10
Rohnert Park-West (Stony Point) 9/20/26 73.0   4.8 1401 53.8   8.6 0348 54.4   1.1 96   2 56   10 1.6   0.2 15.0   0.9 1419 WNW | 287 0.00 0.20 - - 40   10
Cartograph Wines Base 9/20/26 71.5   2.5 1355 52.8   1.1 0330 54.4   0.1 98   0 62   8 3.4   0.1 15.3   5.9 1917 SSE | 159 0.00 0.30 0.083   0.040 290   165 0   10
Cartograph Wines Remote 9/20/26 72.6   0.7 1353 53.7   4.7 0337 - - - - - - - - - - - 40   10
Rice-Spivak Vineyard 9/20/26 74.9   2.5 1313 53.3   8.9 0333 - - - - - - - - - - - 40   10
Penngrove (Asellus) 9/20/26 74.1   7.4 1440 53.5   6.4 2141 52.7   1.0 92   5 48   14 2.3   0.3 13.3   0.8 1026 E | 90 0.00 0.57 - - 10   10
Petaluma (Ranch 10) 9/20/26 74.6   9.8 1458 53.9   7.6 0129 53.1   1.7 91   5 49   19 1.2   0.8 7.1   5.3 1313 SW | 231 0.00 0.09 0.083   0.053 279   156 80   10
Max   74.9 - 53.9 - 54.7 100 66 4.1 17.2 - - 0.00 0.57 0.092 326 -
Avg   - - - - 52.1 - - 2.2 - - - - - - - -
Min   66.1 - 46.8 - 39.0 91 48 1.2 7.1 - - 0.00 0.01 0.013 7 -