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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 5/21/26 2:59 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) RH (%) 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)
Rockpile Upper (Cooley) 5/20/26 86.4   3.1 1455 59.4   3.8 0503 38.2   8.8 30   6 44   4 17   9 5.6   2.5 18.2   7.0 1546 WSW | 249 0.00 42.13 0.283   0.024 721   22 90   10
Rockpile Lower (Cooley) 5/20/26 89.5   2.4 1431 58.6   2.1 0605 39.0   9.3 30   8 50   9 15   7 3.3   1.2 16.1   2.2 1535 W | 269 0.00 41.49 - - 90   10
Cloverdale-East (Ranch 83) 5/20/26 91.6   0.5 1547 55.0   1.0 0052 43.7   8.0 - - - 3.4   0.4 13.0   6.4 1535 SSE | 162 0.00 35.00 0.244   0.017 652   42 70   10
Cloverdale-SE (Ranch 38) 5/20/26 90.2   0.2 1447 59.0   3.8 0647 44.2   8.3 37   8 62   12 17   5 5.9   1.3 19.7   3.0 0621 N | 0 0.00 36.51 0.272   0.017 646   15 80   10
Geyserville-North (Hoffman) 5/20/26 91.1   3.0 1528 46.3   6.4 0602 47.8   9.4 53   19 90   32 17   6 2.2   1.0 12.5   3.8 1340 ESE | 119 0.00 25.50 0.223   0.014 600   18 70   10
Geyserville (Ranch 3) 5/20/26 90.3   0.6 1745 49.4   3.9 0546 45.8   11.7 48   19 85   29 14   5 2.2   1.9 13.4   1.0 1725 SSE | 148 0.00 35.88 0.244   0.023 690   20 70   10
Geyserville-East (Ranch 40) 5/20/26 88.6   2.8 1430 56.7   3.9 0627 45.0   7.9 41   10 62   6 21   9 4.3   0.6 18.1   0.1 1704 S | 177 0.00 36.80 0.260   0.002 680   18 80   10
Geyserville-South (Nervo Station) 5/20/26 88.9   2.5 1517 51.8   2.2 0622 - - - - 2.3   0.6 12.1   6.0 1341 SE | 141 0.00 27.02 - - 70   10
Peterson (Ranch 09) 5/20/26 88.0   2.0 1520 47.4   4.8 0600 44.7   11.1 49   19 86   22 15   7 2.3   1.7 12.7   2.5 1306 S | 171 0.00 33.60 0.226   0.026 654   17 30   10
Crazy Creek Ranch 5/20/26 89.0   0.8 1548 47.4   2.2 0635 48.2   7.7 56   11 89   6 21   8 2.0   0.4 11.2   0.7 1547 SW | 215 0.00 37.11 0.230   0.014 685   17 80   10
Whitton Ranch (201e) 5/20/26 89.6   1.4 1517 41.6   3.3 0607 45.9   8.8 57   20 98   19 18   8 2.0   0.8 12.2   1.1 1632 SSE | 160 0.00 37.97 0.222   0.013 632   18 70   10
Lytton East (Shop Hill Bottom) 5/20/26 87.9   2.3 1440 45.1   0.2 0527 45.3   9.9 52   18 90   13 17   9 2.8   0.4 15.7   3.0 1738 SE | 127 0.00 38.76 0.243   0.001 680   18 80   10
Lytton East (Hill 5) 5/20/26 88.5   1.5 1508 51.0   2.2 0619 45.4   10.0 47   16 76   11 17   8 3.8   0.0 16.9   0.5 1738 SE | 141 0.00 38.22 0.239   0.010 613   15 80   10
Lytton West Lower (Lew 6) 5/20/26 89.0   1.4 1503 43.7   0.2 0604 45.7   8.9 55   17 95   12 16   7 2.4   0.4 13.9   0.4 1803 SE | 141 0.00 38.65 0.222   0.011 600   16 70   10
Lytton West Hill (23PS) 5/20/26 89.3   1.3 1629 50.7   1.6 0613 45.6   10.4 48   17 82   20 16   7 2.8   0.8 14.2   2.0 1600 ESE | 111 0.00 40.37 0.238   0.014 648   15 70   10
Big River 5/20/26 87.5   2.0 1446 50.1   1.1 0627 47.3   9.1 51   17 85   19 22   10 2.5   0.4 15.6   2.6 1756 S | 173 0.00 35.49 0.245   0.001 716   18 80   10
Jimtown-North (Piccolo Ranch 15) 5/20/26 89.2   1.1 1517 45.2   2.5 0617 44.3   7.4 51   10 86   6 16   7 1.3   0.8 11.6   3.7 1532 SSW | 204 0.00 34.87 0.206   0.017 622   19 80   10
HWY 128/Chalk Hill Rd (Landslide) 5/20/26 89.5   3.3 1457 45.1   3.9 0607 47.3   7.9 58   9 94   1 18   9 1.9   0.1 12.9   2.9 1554 S | 189 0.00 34.74 0.211   0.007 594   16 80   10
N Chalk Hill Rd (Ranch 63) 5/20/26 87.5   2.2 1519 44.1   3.1 0614 46.4   7.4 57   7 98   3 19   9 1.8   0.1 11.8   3.9 1540 SSE | 168 0.00 35.63 0.217   0.011 616   16 80   10
Newman Knights Valley 5/20/26 87.0   1.6 1438 44.1   5.0 0547 52.6   3.1 66   5 86   0 43   5 2.3   0.4 13.5   4.1 1428 SW | 223 0.00 35.05 - - 80   10
Knights Valley (Bavarian Lion) 5/20/26 86.8   2.1 1542 43.2   3.9 0622 45.9   9.1 58   9 95   2 17   10 2.0   0.6 14.1   1.1 1516 W | 280 0.00 34.74 0.227   0.016 677   19 90   10
Red Tail 5/20/26 86.4   3.7 1428 46.3   2.8 0624 47.9   7.2 57   17 87   16 23   9 2.7   0.7 16.1   2.0 1521 S | 182 0.00 35.82 0.230   0.016 669   19 80   10
Franz Valley (Stornetta) 5/20/26 87.9   2.6 1527 43.6   4.7 0616 44.8   8.8 - 92   1 16   8 1.7   0.1 11.2   1.1 1724 WNW | 288 0.00 35.29 - - 90   10
Upper Dry Creek Valley 5/19/26 91.2   2.1 1523 47.7   3.3 0351 36.8   6.9 38   5 80   0 9   4 2.5   0.3 15.4   1.8 1313 W | 278 0.00 39.08 0.254   0.002 713   23 90   10
Lower Dry Creek Valley 5/20/26 90.4   1.3 1716 46.5   3.5 0542 45.9   8.2 52   13 90   16 15   7 2.2   1.1 12.9   1.5 1524 ESE | 118 0.00 38.16 0.230   0.016 632   32 80   10
Max   91.6 - 59.4 - 52.6 66 98 43 5.9 19.7 - - 0.00 42.13 0.283 721 -
Avg   - - - - 45.5 50 - - 2.7 - - - - - - - -
Min   86.4 - 41.6 - 38.2 30 44 14 1.3 11.2 - - 0.00 25.50 0.206 594 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 5/21/26 2:59 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) RH (%) Daily Max RH (%) Daily Min RH (%) Wind Spd (mph) Daily Max Wind (mph) Time of Max Wind Daily Rain (In) Season Precip (In) Daily ETo (in) Daily Solar Rad (Cal/cm2) Powdery Mildew Stress (pts)
Windsor-NW (Ranch 8) 5/20/26 88.5   1.9 1613 50.0   2.5 0605 50.4   8.5 60 84   10 24   10 0.7 10.9   9.1 1837 0.00 34.10 0.212   0.041 684   17 60
Windsor-East (Ranch 16) 5/20/26 86.7   4.2 1358 45.2   5.3 0536 46.2   9.6 58 93   9 18   8 2.5 12.8   3.3 1434 0.00 27.00 0.238   0.033 687   20 80
Mark West-North (Ranch 14) 5/20/26 85.3   3.3 1324 47.8   5.0 0544 46.0   9.4 54 88   18 18   8 1.8 11.5   0.8 1344 0.00 29.03 0.044   0.004 0   0 60
Windsor-SE (Silk Rd) 5/20/26 85.7   3.6 1434 45.0   2.1 0535 47.7   8.2 62 95   1 19   9 1.7 10.5   5.9 1337 0.00 26.47 0.221   0.022 679   20 80
Fulton-NW (Ranch 5) 5/20/26 85.5   3.0 1353 46.2   0.2 0555 47.3   8.3 60 94   8 20   10 2.3 13.8   1.4 1552 0.00 29.89 0.230   0.024 680   26 100
Bisordi (Fulton) 5/20/26 85.7   3.1 1357 45.4   0.3 0601 49.0   6.7 63 95   8 26   12 1.9 13.4   4.1 1324 0.00 24.35 0.223   0.041 696   52 100
Windsor-South (Laughlin Rd) 5/20/26 88.5   1.9 1341 47.5   2.2 0607 47.5   9.5 58 94   16 18   8 - - - 0.00 28.55 - - 70
Fulton-SE (Barnes Rd) 5/20/26 86.2   4.7 1333 47.8   0.6 0554 46.6   6.5 55 88   10 19   7 2.3 12.9   4.9 1414 0.00 28.57 - - 70
Fulton-SW (Ranch 21) 5/20/26 84.9   5.1 1332 46.5   0.7 0545 47.6   8.9 62 90   9 24   13 2.9 14.5   5.8 1503 0.00 29.17 0.239   0.030 712   18 100
NW Santa Rosa (Piner Road) 5/20/26 84.9   6.9 1341 45.2   0.6 0600 50.5   6.4 70 100   0 27   13 2.1 13.9   1.8 1530 0.00 23.80 - - 100
River Rd South (Denner Ranch) 5/20/26 84.7   5.4 1324 44.4   0.5 0534 21.5   16.9 43 100   15 0   8 3.7 18.6   3.7 1526 - - - - 90
West Santa Rosa (LOV Vineyard) 5/20/26 83.4   5.4 1359 46.2   0.5 0534 47.9   8.8 65 94   6 25   16 2.0 14.5   3.2 1515 0.00 23.02 0.045   0.019 0   0 100
Guerneville Rd (Prokopakis) 5/20/26 88.0   1.2 1344 46.6   1.7 0609 48.8   8.2 61 94   2 22   12 - - - 0.00 28.14 - - 80
SunnyView Vineyard (SCWC) 5/20/26 85.9   3.9 1329 43.6   2.2 0553 46.8   8.2 63 95   1 21   11 1.7 13.3   7.0 1528 0.00 30.69 0.200   0.038 616   20 90
Guerneville Rd West (Balletto) 5/20/26 84.7   4.5 1337 45.7   1.1 0606 49.4   6.9 67 95   2 28   16 2.5 12.9   5.5 1519 0.00 28.22 - - 100
Sanchietti Ranch 5/20/26 86.3   3.7 1335 44.6   1.9 0555 49.6   5.9 - 94   1 28   14 2.8 13.1   4.9 1600 0.00 28.88 - - 80
Occidental Rd (Sebastopol) 5/20/26 85.0   4.0 1310 45.0   1.0 0538 50.7   7.7 73 100   0 26   13 2.1 15.8   4.4 1530 0.00 11.49 - - 100
Harper's Rest (Windsor-West) 5/20/26 87.6   1.2 1609 44.9   0.7 0522 46.2   8.6 - 94   12 17   8 1.8 10.2   2.6 1615 0.00 34.66 - - 90
Lower Westside Rd (Ranch 12) 5/20/26 88.8   1.0 1543 46.0   2.5 0607 45.5   7.2 56 93   4 17   8 1.6 13.6   1.7 1627 0.00 33.35 - - 70
Guerneville (Laughlin Rd) 5/20/26 87.1   2.9 1307 44.2   2.9 0609 44.5   7.8 55 88   2 20   13 1.6 13.4   2.6 1515 0.00 44.34 - - 70
Korbel (Winery) 5/20/26 88.7   1.5 1317 47.6   2.7 0536 45.9   6.6 56 94   0 17   9 1.4 14.8   2.2 1631 0.00 41.51 - - 100
Forestville (Shone Farms) 5/20/26 88.5   1.9 1449 48.1   0.4 0555 47.2   10.2 55 87   14 20   11 1.7 12.6   5.8 1511 0.00 35.56 0.224   0.018 677   18 80
Forestville-NE (Ranch 30) 5/20/26 87.6   2.1 1625 45.4   2.0 0557 49.1   7.0 63 96   4 25   11 2.2 15.4   3.4 1515 0.00 33.46 0.235   0.015 695   19 70
Foggy Bend (Ranch 41) 5/20/26 88.1   0.8 1528 46.3   2.4 0548 50.4   5.0 63 93   2 31   11 2.0 13.6   6.2 1630 0.00 34.76 0.233   0.019 698   15 80
Last Stop 5/20/26 86.7   2.4 1323 43.9   1.9 0556 49.6   8.6 66 97   5 25   13 1.8 12.9   4.7 1419 0.00 33.76 0.221   0.017 685   19 80
Green Valley Vineyard 5/20/26 84.1   3.8 1443 47.4   1.6 0548 46.1   10.3 55 94   15 22   13 1.9 12.9   10.1 1508 0.00 41.26 0.046   0.033 2   8 100
Park Royal 5/20/26 86.2   3.4 1350 45.8   2.5 0538 46.0   8.7 60 90   3 17   9 - - - 0.00 16.67 - - 100
Merino 5/20/26 85.5   3.8 1351 43.0   2.1 0542 48.9   5.4 70 100   0 25   11 2.1 13.2 1345 0.00 29.67 0.226   0.061 712   17 100
Green Valley (Sanchietti) 5/20/26 87.9   2.7 1440 43.8   3.1 0542 - - - - - - - - - - - 70
Keefer Ranch (Green Valley) 5/20/26 83.1   4.4 1444 42.8   1.5 0553 49.3   6.7 67 98   0 29   15 - - - 0.00 36.76 - - 100
Graton-West (Dutton Ranch) 5/20/26 86.5   2.8 1303 43.9   1.1 0542 49.1   8.8 67 100   0 22   13 1.9 11.7   6.5 1346 0.00 44.85 - - 100
Graton-South (Mill Station Rd) 5/20/26 79.3   8.4 1238 43.7   2.7 0551 48.0   9.5 66 97   3 33   24 1.0 9.5   3.4 1518 0.00 34.06 - - 100
Occidental (Horseshoe Bend) 5/20/26 78.1   6.6 1349 49.5   1.7 0029 46.8   12.7 - 93   10 30   19 - - - 0.00 37.05 - - 90
Sexton Valley (Jacqueline's Blk) 5/20/26 79.6   6.7 1122 44.6   2.4 0609 50.4   7.2 72 99   0 41   26 1.4 12.3   4.0 1404 0.00 22.49 - - 100
Sebastopol Hills (Burnside Rd) 5/20/26 75.4   9.3 1309 50.6   3.3 0036 48.9   9.4 64 90   15 42   28 2.7 15.0   0.9 1553 0.00 33.45 - - 50
Pleasant Hill 5/20/26 83.3   3.3 1238 44.6   4.4 0540 47.7   10.2 - 96   14 26   14 1.9 11.5   3.9 1631 0.00 31.56 - - 100
Seaview/Fort Ross (Hirsch) 5/20/26 76.6   3.1 1233 66.2   3.2 0545 37.8   9.6 29 40   13 20   10 2.4 9.6   3.7 1502 0.00 53.61 0.222   0.035 717   18 60
Max   88.8 - 66.2 - 50.7 73 100 42 3.7 18.6 - 0.00 53.61 0.239 717 -
Avg   - - - - 47.0 60 - - 2.0 - - - - - - -
Min   75.4 - 42.8 - 21.5 29 40 0 0.7 9.5 - 0.00 11.49 0.044 0 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 5/21/26 2:59 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 5/20/26 83.7   1.9 1410 54.8   1.6 0542 43.1   12.8 64   16 21   11 2.6   0.3 10.2   3.0 1416 SW | 221 0.00 5.84 0.217   0.020 668   9 100   20
Lower Bennett Valley 5/20/26 85.7   2.0 1606 42.4   3.5 0538 45.8   6.6 95   2 19   9 2.0   0.5 11.4   5.6 1437 SSW | 205 0.00 27.61 0.225   0.021 670   19 100   10
Kenwood (Wildwood) 5/20/26 87.8   0.2 1404 45.1   1.5 0547 45.6   10.1 91   18 20   10 2.7   0.3 14.3   2.7 1627 NNW | 344 0.00 31.95 0.221   0.015 656   25 80   10
Sonoma Valley (Bedrock) 5/20/26 88.0   0.2 1609 44.4   0.3 0551 42.6   10.3 85   14 16   7 - - - - 0.00 27.98 - - 80   10
Sonoma-West (Arnold) 5/20/26 90.9   0.1 1459 44.0   4.2 0542 44.5   8.4 90   2 13   5 2.1   1.0 14.5   6.8 1645 W | 265 0.00 17.88 0.262   0.031 768   29 80   10
Sonoma Valley HS 5/20/26 88.7   1.3 1534 46.9   1.8 0541 48.1   7.2 95   11 19   6 1.8   0.7 10.2   0.1 1739 W | 264 0.00 6.62 0.228   0.026 696   27 80   10
Sonoma East (Bundschu01) 5/20/26 88.7   0.7 1517 45.0   3.7 0524 44.4   8.4 88   3 17   9 2.5   0.9 14.0   6.6 1549 S | 170 0.00 21.64 0.233   0.035 681   30 80   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) 5/20/26 89.1   3.1 1503 44.9   3.7 0549 45.5   8.2 90   2 18   8 1.6   0.8 11.1   6.4 1637 SSW | 209 0.00 18.49 - - 80   10
Ricci Vineyards (Carneros) 5/20/26 88.0   2.2 1441 45.0   4.0 0603 46.5   8.2 92   2 18   10 3.4   0.8 15.8   5.0 1906 W | 273 0.00 22.95 0.245   0.037 711   26 90   10
Carneros (Ranch 71) 5/20/26 85.7   1.9 1457 55.6   0.7 0348 46.4   11.3 83   29 19   10 2.5   1.4 13.1   10.7 1829 WSW | 249 0.00 19.86 0.231   0.048 698   31 100   10
Carneros Upper (Ranch 81) 5/20/26 87.4   1.9 1458 55.0   2.1 0542 46.4   13.4 - - 4.0   1.4 15.2   10.5 1809 WSW | 238 - - - - 80   10
Carneros Lower (Ranch 81) 5/20/26 86.1   5.0 1507 47.7   4.6 0544 48.8   9.8 93   3 25   16 1.5   0.1 10.0   3.1 1347 SSE | 161 0.00 19.42 0.193   0.018 590   19 100   10
Rohnert Park-West (Stony Point) 5/20/26 80.6   5.0 1314 42.5   1.2 0434 49.6   4.9 96   1 36   21 2.1   0.9 17.4   1.5 1625 W | 270 0.00 11.83 - - 100   0
Cartograph Wines Base 5/20/26 76.6   8.4 1317 48.6   1.8 0038 50.4   7.2 94   7 44   27 3.5   1.4 20.0   1.5 1628 SSW | 198 0.00 28.36 0.198   0.058 688   16 50   10
Cartograph Wines Remote 5/20/26 79.8   9.4 1128 45.3   0.4 0600 - - - - - - - - - - - 80   20
Rice-Spivak Vineyard 5/20/26 82.2   5.8 1103 36.5   1.7 0540 - - - - - - - - - - - 100   0
Penngrove (Asellus) 5/20/26 86.4   2.7 1305 42.2   1.7 0538 46.7   4.9 97   2 19   10 1.9   0.7 12.0   3.1 1445 WNW | 290 0.00 67.81 - - 100   10
Petaluma (Ranch 10) 5/20/26 88.1   2.3 1453 42.6   0.9 0608 46.6   7.5 93   5 22   13 2.1   0.5 13.2   1.1 1808 NW | 319 0.00 19.63 0.226   0.027 683   24 70   10
Max   90.9 - 55.6 - 50.4 97 44 4.0 20.0 - - 0.00 67.81 0.262 768 -
Avg   - - - - 46.3 - - 2.4 - - - - - - - -
Min   76.6 - 36.5 - 42.6 64 13 1.5 10.0 - - 0.00 5.84 0.193 590 -