Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/21/26 6:42 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 8/20/26 77.9   7.8 1530 50.4   1.1 0508 52.4   1.3 98   0 44   7 1.4   0.0 8.9   1.4 1546 SSE | 148 0.00 0.01 0.118   0.027 392   53 100   10
Lower Bennett Valley 8/20/26 78.7   9.5 1440 52.3   0.9 0540 54.4   1.0 100   0 45   8 4.0   0.7 15.6   1.8 1626 SSW | 208 0.00 0.00 0.153   0.035 518   53 70   10
Kenwood (Wildwood) 8/20/26 83.5   8.1 1516 52.2   0.8 0635 53.2   1.3 100   3 36   5 3.5   0.4 13.5   2.2 1601 NNW | 331 0.00 0.00 0.174   0.015 565   11 20   20
Sonoma Valley (Bedrock) 8/20/26 85.2   0.7 1548 52.7   3.0 0618 51.7   1.2 93   1 31   4 - - - - 0.00 0.00 - - 100   20
Sonoma-West (Arnold) 8/20/26 86.6   3.0 1445 48.3   0.7 0110 52.3   1.0 92   0 34   2 3.6   1.4 15.9   1.9 1525 SW | 226 0.00 0.00 0.212   0.014 640   42 0   0
Sonoma Valley HS 8/20/26 83.5   0.9 1518 52.0   0.8 0136 55.4   1.4 100   0 44   1 2.8   0.7 13.4   4.0 1627 SSW | 211 0.00 0.00 0.176   0.008 582   46 100   0
Sonoma East (Bundschu01) 8/20/26 82.9   0.1 1512 52.8   2.1 0101 53.2   1.2 94   0 38   4 3.0   0.4 17.1   1.8 1612 SW | 228 0.00 0.00 0.179   0.000 582   32 100   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) 8/20/26 84.3   0.8 1516 53.0   0.9 0158 53.1   1.4 93   1 35   6 3.5   1.1 14.8   3.7 1831 W | 277 0.00 0.00 - - 100   0
Ricci Vineyards (Carneros) 8/20/26 84.4   3.8 1521 53.7   0.0 0157 53.4   1.3 95   0 34   12 6.7   3.1 20.8   8.2 1808 W | 270 0.00 0.01 0.186   0.018 566   43 100   0
Carneros (Ranch 71) 8/20/26 81.7   2.4 1523 53.0   0.5 0647 53.2   1.8 96   0 38   10 7.1   4.3 21.4   7.7 1705 WSW | 258 0.00 0.00 0.181   0.027 571   54 100   0
Carneros Upper (Ranch 81) 8/20/26 82.6   1.6 1526 53.1   0.5 0207 33.9   6.1 - - 10.4   5.6 29.4   13.4 1913 WSW | 254 - - - - 100   0
Carneros Lower (Ranch 81) 8/20/26 89.7   10.0 1443 53.8   0.1 0156 54.2   1.3 93   0 32   17 0.9   0.8 13.8   1.6 1536 SSE | 166 0.00 0.00 0.161   0.013 526   48 90   10
Rohnert Park-West (Stony Point) 8/20/26 71.2   7.5 1354 53.2   0.9 0555 55.4   0.9 99   1 60   8 2.0   0.3 15.5   2.6 1617 SSW | 210 0.00 0.00 - - 0   0
Cartograph Wines Base 8/20/26 69.9   6.1 1402 52.7   0.5 0542 55.2   0.9 99   0 67   8 4.4   1.3 20.7   1.5 1602 SSW | 200 0.01 0.08 0.123   0.024 493   33 0   0
Cartograph Wines Remote 8/20/26 69.5   8.7 1355 53.5   0.5 0543 - - - - - - - - - - - 0   0
Rice-Spivak Vineyard 8/20/26 72.6   6.5 1349 53.1   0.5 0542 - - - - - - - - - - - 0   0
Penngrove (Asellus) 8/20/26 74.7   10.1 1333 53.4   0.7 0430 53.8   0.7 97   1 48   12 2.8   0.2 14.5   0.5 1546 SW | 228 0.00 0.00 - - 60   10
Petaluma (Ranch 10) 8/20/26 77.8   10.4 1447 54.5   0.4 0401 54.1   0.8 95   2 45   11 3.4   1.0 14.6   3.1 1701 WSW | 243 0.00 0.00 0.153   0.018 513   24 50   10
Max   89.7 - 54.5 - 55.4 100 67 10.4 29.4 - - 0.01 0.08 0.212 640 -
Avg   - - - - 52.4 - - 4.0 - - - - - - - -
Min   69.5 - 48.3 - 33.9 92 31 0.9 8.9 - - 0.00 0.00 0.118 392 -