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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 8/31/26 9:17 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) 8/30/26 86.6   5.9 1443 51.8   0.1 0400 45.2   0.4 49   7 79   10 23   2 6.8   4.3 21.0   12.5 0113 NNW | 327 0.00 0.05 0.232   0.009 617   11 30   10
Rockpile Lower (Cooley) 8/30/26 90.6   5.6 1509 53.7   1.4 0648 46.6   0.8 49   3 79   3 21   2 2.7   3.2 16.6   10.5 1645 W | 278 0.00 0.02 - - 30   10
Cloverdale-East (Ranch 83) 8/30/26 91.4   0.9 1615 46.5   3.2 0651 48.8   2.4 - - - 2.2   0.1 14.7   1.3 1756 SSE | 155 0.00 0.00 0.201   0.002 578   11 0   10
Cloverdale-SE (Ranch 38) 8/30/26 88.9   1.3 1556 53.9   3.2 0716 50.3   1.7 56   2 84   4 27   3 4.9   0.6 19.3   3.5 1722 NNW | 332 0.00 0.01 0.210   0.007 530   13 0   10
Geyserville-North (Hoffman) 8/30/26 88.9   2.9 1553 45.4   2.7 0628 50.6   1.3 60   1 91   6 28   1 2.4   0.1 13.2   1.1 1828 SE | 130 0.00 0.00 0.187   0.005 541   3 0   10
Geyserville (Ranch 3) 8/30/26 89.2   1.3 1619 46.6   2.1 0609 48.0   0.3 56   3 86   14 22   1 2.4   0.3 13.6   1.8 1815 SE | 139 0.00 0.00 0.192   0.002 541   1 10   10
Geyserville-East (Ranch 40) 8/30/26 86.6   1.8 1559 52.0   2.9 0059 51.0   0.5 62   0 95   1 30   0 5.5   1.0 21.0   2.2 1634 S | 182 0.00 0.00 0.212   0.014 556   5 0   0
Geyserville-South (Nervo Station) 8/30/26 88.1   2.6 1539 50.2   2.4 0633 - - - - 2.8   0.1 13.5   3.7 1821 SE | 145 0.00 0.00 - - 10   10
Peterson (Ranch 09) 8/30/26 87.4   2.3 1539 44.8   1.0 0630 47.7   0.5 59   1 89   8 24   1 2.6   0.1 12.8   0.3 1727 S | 188 0.00 0.00 0.183   0.002 550   10 0   10
Crazy Creek Ranch 8/30/26 88.6   1.6 1556 45.2   0.5 0631 50.1   0.1 63   1 95   4 30   2 1.7   0.3 11.9   2.7 1700 SSW | 195 0.00 0.00 0.189   0.001 588   6 0   10
Whitton Ranch (201e) 8/30/26 90.0   1.9 1616 40.8   0.9 0606 48.2   0.4 62   1 100   0 25   0 2.3   0.0 11.9   0.1 1806 SSE | 148 0.00 0.03 0.184   0.001 532   4 0   10
Lytton East (Shop Hill Bottom) 8/30/26 87.5   2.1 1550 45.4   0.8 0650 48.6   0.2 62   0 94   6 24   2 2.7   0.3 15.3   0.0 1704 SE | 143 0.00 0.00 0.204   0.008 592   20 10   10
Lytton East (Hill 5) 8/30/26 87.4   2.5 1528 49.0   0.1 0648 49.5   0.5 61   1 94   4 25   2 4.0   0.8 17.8   5.1 1748 SSE | 163 0.00 0.00 0.199   0.001 531   14 30   10
Lytton West Lower (Lew 6) 8/30/26 87.6   2.4 1543 44.2   1.0 0643 48.7   0.1 63   1 100   0 26   3 2.5   0.4 15.7   2.5 1635 S | 190 0.00 0.01 0.201   0.005 600   23 10   10
Lytton West Hill (23PS) 8/30/26 87.0   2.3 1545 49.8   0.0 0646 49.9   0.3 62   1 92   8 28   3 3.3   0.1 16.8   2.6 1701 SE | 139 0.00 0.01 0.206   0.008 606   17 60   10
Big River 8/30/26 85.4   1.9 1545 48.6   0.6 0553 51.2   0.8 65   0 95   5 33   2 2.5   0.3 17.0   3.4 1703 S | 184 0.00 0.00 0.198   0.006 615   9 70   20
Jimtown-North (Piccolo Ranch 15) 8/30/26 89.2   2.7 1542 44.0   0.4 0611 46.0   0.9 56   5 88   12 24   1 1.3   0.4 13.8   1.8 1705 SSE | 160 0.00 0.00 0.164   0.001 509   10 0   10
HWY 128/Chalk Hill Rd (Landslide) 8/30/26 88.9   2.7 1525 43.4   0.4 0641 48.7   0.7 62   2 93   3 27   2 1.8   0.2 13.5   1.5 1705 SW | 218 0.00 0.00 0.168   0.002 500   2 0   0
N Chalk Hill Rd (Ranch 63) 8/30/26 86.0   1.8 1602 42.3   0.8 0620 47.6   0.4 60   3 93   6 29   2 2.1   0.2 12.8   1.2 1705 S | 187 0.00 0.00 0.171   0.002 510   3 0   10
Newman Knights Valley 8/16/26 87.7   7.5 1555 53.8   0.1 0712 56.9   1.1 71   5 89   2 46   12 3.1   0.4 13.6   1.9 1647 SW | 220 0.00 0.00 - - 60   10
Knights Valley (Bavarian Lion) 8/30/26 86.7   0.3 1539 42.2   1.9 0520 47.3   1.3 63   2 95   3 28   7 2.2   0.0 13.3   1.4 1730 SW | 220 0.00 0.00 0.187   0.004 571   0 0   0
Red Tail 8/30/26 85.2   0.4 1501 44.7   0.6 0658 50.1   0.0 66   1 93   2 37   4 2.5   0.0 15.3   1.6 1637 S | 191 0.00 0.01 0.185   0.001 578   6 70   20
Franz Valley (Stornetta) 8/30/26 87.3   1.4 1531 42.1   1.7 0648 47.4   0.7 - 91   4 29   4 1.2   0.1 12.5   2.4 1403 N | 350 0.00 0.00 - - 20   20
Upper Dry Creek Valley 8/30/26 88.9   0.6 1625 46.0   2.2 0652 49.8   1.9 60   1 95   2 26   5 2.8   0.7 13.3   4.1 1634 SSE | 150 0.00 0.00 0.204   0.010 591   12 30   10
Lower Dry Creek Valley 8/30/26 86.4   1.9 1544 44.7   0.8 0643 48.7   0.1 61   3 91   9 29   7 2.9   0.2 17.2   2.9 1639 ESE | 112 0.00 0.01 0.198   0.013 562   20 40   10
Max   91.4 - 53.9 - 51.2 66 100 37 6.8 21.0 - - 0.00 0.05 0.232 617 -
Avg   - - - - 48.7 60 - - 2.8 - - - - - - - -
Min   85.2 - 40.8 - 45.2 49 79 21 1.2 11.9 - - 0.00 0.00 0.164 500 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 8/31/26 9:17 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) 8/30/26 88.2   2.0 1554 49.2   0.2 0654 51.4   0.2 66 84   5 32   3 0.0 7.6   3.9 1853 0.00 0.02 0.165   0.007 580   24 0
Windsor-East (Ranch 16) 8/30/26 85.4   2.0 1443 44.1   1.0 0614 48.9   0.9 66 93   7 32   1 3.0 16.6   3.6 1612 0.00 0.00 0.195   0.010 580   23 100
Mark West-North (Ranch 14) 8/30/26 83.7   0.8 1559 45.8   4.7 0620 49.1   1.4 65 94   4 31   1 1.7 11.1   0.4 1641 0.00 0.00 - - 0
Windsor-SE (Silk Rd) 8/30/26 84.2   0.4 1535 43.5   2.8 0643 49.4   1.6 68 95   5 31   1 1.9 11.4   0.5 1621 0.00 0.02 0.181   0.010 577   24 100
Fulton-NW (Ranch 5) 8/30/26 83.0   1.4 1517 45.0   4.2 0626 49.7   24.5 68 93   7 36   33 3.0 13.4   0.4 1440 0.00 0.00 0.186   0.000 568   2 100
Bisordi (Fulton) 8/30/26 83.5   1.4 1426 42.8   3.5 0624 50.9   2.1 71 94   3 40   1 1.9 11.4   0.4 1707 0.00 0.00 0.190   0.009 626   33 100
Windsor-South (Laughlin Rd) 8/30/26 84.8   0.6 1424 47.0   2.9 0647 50.3   21.8 67 93   7 32   32 - - - 0.00 0.00 - - 90
Fulton-SE (Barnes Rd) 8/30/26 83.1   2.7 1412 46.5   4.2 0622 50.4   1.6 67 90   6 36   1 2.5 12.3   0.7 1437 0.00 0.00 - - 100
Fulton-SW (Ranch 21) 8/30/26 82.1   1.1 1355 45.4   5.2 0629 49.6   42.1 68 92   8 35   35 2.6 13.2   0.2 1702 0.00 0.00 0.198   0.007 630   32 100
NW Santa Rosa (Piner Road) 8/30/26 82.7   0.8 1538 43.0   7.9 0635 52.6   1.1 78 100   0 40   3 1.9 12.3   1.2 1544 0.00 0.00 - - 100
River Rd South (Denner Ranch) 8/30/26 82.3   0.6 1347 43.6   5.0 0634 -0.2   2.3 31 100   0 0   0 3.9 15.8   0.4 1530 - - - - 90
West Santa Rosa (LOV Vineyard) 8/25/26 85.6   5.6 1427 51.5   1.4 0051 53.4   2.0 73 96   2 24   16 1.5 11.9   1.3 1443 0.00 0.00 0.029   0.002 0   0 100
Guerneville Rd (Prokopakis) 8/30/26 88.3   0.9 1413 44.0   5.9 0617 50.1   1.5 69 97   2 29   0 - - - 0.00 0.04 - - 30
SunnyView Vineyard (SCWC) 8/30/26 82.5   0.5 1353 41.8   7.8 0624 48.4   2.4 68 95   5 34   3 1.7 11.8   1.3 1559 0.00 0.00 0.165   0.008 540   22 90
Guerneville Rd West (Balletto) 8/30/26 81.4   1.0 1512 44.0   6.5 0621 51.2   1.7 74 96   4 41   1 2.4 14.0   1.2 1559 0.00 0.11 - - 100
Sanchietti Ranch 8/30/26 82.3   1.1 1354 43.1   8.2 0634 51.9   2.4 - 96   2 43   1 3.0 13.4   0.7 1526 0.00 0.00 - - 100
Occidental Rd (Sebastopol) 8/30/26 82.2   0.9 1328 42.6   6.5 0633 53.4   1.8 82 100   0 43   2 2.3 14.2   0.9 1610 0.00 0.00 - - 100
Harper's Rest (Windsor-West) 8/30/26 87.9   3.0 1609 45.3   2.8 0633 48.8   1.1 - 97   0 25   6 1.8 11.1   0.5 1422 0.00 0.04 - - 20
Lower Westside Rd (Ranch 12) 8/30/26 85.6   2.2 1546 44.3   2.8 0649 48.9   2.3 67 95   5 27   6 1.8 13.4   0.1 1630 0.00 0.03 - - 100
Guerneville (Laughlin Rd) 8/30/26 82.7   0.7 1406 43.7   3.9 0626 47.7   3.2 65 92   5 33   0 1.9 12.9   0.7 1424 0.00 0.02 - - 100
Korbel (Winery) 8/30/26 83.8   2.0 1418 46.0   2.4 0622 49.8   2.5 66 96   2 32   1 0.9 13.2   2.8 1509 0.00 0.01 - - 100
Forestville (Shone Farms) 8/30/26 86.6   2.9 1711 47.2   1.3 0630 50.5   1.2 67 95   3 29   8 1.8 11.7   1.3 1927 0.00 0.04 0.181   0.010 571   23 100
Forestville-NE (Ranch 30) 8/30/26 85.1   0.1 1628 45.5   0.9 0703 51.3   1.2 71 99   1 33   5 2.5 16.2   2.9 1600 0.00 0.03 0.190   0.008 589   20 0
Foggy Bend (Ranch 41) 8/30/26 84.8   0.6 1524 45.0   3.4 0645 52.3   1.4 72 97   0 38   4 1.8 13.2   1.7 1530 0.00 0.03 0.184   0.013 584   14 100
Last Stop 8/30/26 86.3   1.3 1409 43.8   2.4 0630 50.1   1.9 70 98   0 33   2 2.0 14.2   2.3 1208 0.00 0.02 0.184   0.007 585   32 40
Green Valley Vineyard 8/30/26 82.1   3.0 1605 45.5   1.6 0635 49.7   1.2 69 98   0 31   0 1.9 12.7   0.9 1430 0.00 0.07 0.040   0.006 31   12 100
Park Royal 8/30/26 82.5   1.2 1344 45.0   5.5 0644 49.0   1.6 67 91   7 33   3 - - - 0.00 0.00 - - 100
Merino 8/30/26 85.3   1.9 1527 40.4   8.5 0654 50.9   2.2 74 100   0 36   1 2.0 12.3   0.6 1513 0.00 0.00 0.189   0.009 607   34 100
Green Valley (Sanchietti) 8/30/26 85.1   1.9 1625 39.0   3.9 0637 - - - - - - - - - - - 100
Keefer Ranch (Green Valley) 8/30/26 82.4   3.8 1625 41.6   3.4 0641 49.8   2.4 73 98   0 36   1 - - - 0.00 0.04 - - 70
Graton-West (Dutton Ranch) 8/30/26 82.8   2.6 1559 42.0   3.7 0652 51.4   2.3 77 100   0 33   1 1.7 11.1   0.1 1527 0.00 0.05 - - 100
Graton-South (Mill Station Rd) 8/30/26 78.4   6.0 1436 40.5   3.3 0639 48.2   2.3 92 94   5 90   56 0.0 10.2   3.2 1456 0.00 0.03 - - 50
Occidental (Horseshoe Bend) 8/30/26 78.5   3.0 1602 49.2   2.0 0629 50.2   0.9 - 98   2 36   0 - - - 0.00 0.08 - - 40
Sexton Valley (Jacqueline's Blk) 8/30/26 79.4   4.7 1436 41.9   0.6 0647 50.8   1.0 76 99   1 43   3 1.2 12.0   3.6 1500 0.00 0.09 - - 80
Sebastopol Hills (Burnside Rd) 8/30/26 74.7   7.0 1458 48.7   2.2 0701 52.0   0.2 78 98   2 49   10 2.4 15.3   3.9 1619 0.00 0.00 - - 100
Pleasant Hill 8/30/26 80.5   2.5 1337 44.8   0.1 0626 50.0   0.3 - 98   1 37   3 2.2 12.0   2.2 1513 0.00 0.05 - - 90
Seaview/Fort Ross (Hirsch) 8/30/26 75.7   1.6 1741 54.6   0.9 0346 47.1   0.6 55 74   2 30   8 2.4 9.1   5.3 1647 0.00 0.06 0.168   0.017 587   9 50
Max   88.3 - 54.6 - 53.4 92 100 90 3.9 16.6 - 0.00 0.11 0.198 630 -
Avg   - - - - 48.7 69 - - 2.0 - - - - - - -
Min   74.7 - 39.0 - -0.2 31 74 0 0.0 7.6 - 0.00 0.00 0.040 31 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/31/26 9:17 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 8/30/26 82.6   2.5 1504 49.0   0.9 0626 48.7   0.1 93   1 35   2 1.9   0.2 10.4   0.6 1611 S | 171 0.00 0.01 0.139   0.003 431   8 90   20
Lower Bennett Valley 8/30/26 83.2   1.9 1416 40.1   1.0 0558 49.4   0.9 100   0 36   3 3.2   0.3 12.9   1.3 1601 WSW | 248 0.00 0.00 0.180   0.002 568   14 100   10
Kenwood (Wildwood) 8/30/26 83.9   0.8 1538 43.3   1.9 0638 49.2   0.1 100   0 34   6 2.2   0.1 12.3   1.2 1656 NNW | 342 0.00 0.00 0.171   0.010 546   28 40   20
Sonoma Valley (Bedrock) 8/30/26 79.6   2.7 1549 43.3   0.7 0658 48.2   0.3 95   3 36   9 - - - - 0.00 0.00 - - 100   20
Sonoma-West (Arnold) 8/30/26 81.3   4.0 1728 44.2   2.8 0501 48.6   1.2 94   1 34   5 2.5   0.4 13.7   4.0 1813 WSW | 255 0.00 0.00 0.191   0.027 602   64 40   20
Sonoma Valley HS 8/30/26 78.8   3.2 1744 47.1   2.1 0609 52.9   0.5 100   0 43   4 2.1   0.2 10.1   1.7 1721 ESE | 102 0.00 0.00 0.155   0.014 519   38 100   20
Sonoma East (Bundschu01) 8/30/26 78.1   3.5 1501 45.1   2.3 0502 49.8   0.2 93   2 38   4 3.5   0.2 15.3   1.1 1328 SE | 130 0.00 0.00 0.165   0.013 528   27 100   20
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) 8/30/26 79.2   3.6 1443 45.6   3.1 0534 49.8   0.2 94   1 36   4 2.6   0.2 11.5   1.7 1030 SSW | 194 0.00 0.00 - - 100   20
Ricci Vineyards (Carneros) 8/30/26 76.4   4.5 1548 45.9   0.2 0527 50.2   1.3 96   1 43   7 3.3   0.1 13.8   2.1 1711 S | 173 0.00 0.01 0.167   0.013 551   16 80   20
Carneros (Ranch 71) 8/30/26 74.3   4.7 1417 53.4   2.4 0248 51.9   0.6 90   10 46   10 2.9   0.1 11.2   4.3 1550 S | 185 0.00 0.00 0.154   0.012 535   13 70   10
Carneros Upper (Ranch 81) 8/30/26 77.4   0.9 1455 54.6   2.9 0055 51.8   19.1 - - 4.0   1.0 16.7   4.6 1246 SSW | 198 - - - - 70   10
Carneros Lower (Ranch 81) 8/30/26 76.7   3.2 1435 47.7   0.9 0340 51.9   9.5 100   0 45   45 2.0   0.1 11.8   3.3 1158 SSE | 158 0.00 0.00 0.024   0.003 0   1 70   10
Rohnert Park-West (Stony Point) 8/30/26 79.6   0.6 1323 40.7   7.1 0656 49.9   3.2 98   1 45   1 2.0   0.6 16.5   0.3 1442 W | 281 0.00 0.00 - - 100   10
Cartograph Wines Base 8/30/26 77.1   0.2 1335 48.4   2.5 0605 52.5   1.2 97   2 48   2 3.5   0.2 19.3   0.1 1726 S | 181 0.00 0.09 0.171   0.011 587   35 90   10
Cartograph Wines Remote 8/30/26 80.7   2.5 1236 44.6   5.1 0635 - - - - - - - - - - - 80   10
Rice-Spivak Vineyard 8/30/26 80.6   0.7 1334 38.0   6.4 0607 - - - - - - - - - - - 90   20
Penngrove (Asellus) 8/30/26 83.0   2.5 1437 42.0   6.6 0639 48.4   2.6 97   1 33   1 2.2   0.2 16.8   3.2 1431 WSW | 258 0.00 0.00 - - 100   10
Petaluma (Ranch 10) 8/30/26 85.3   4.2 1457 43.9   1.4 0627 49.6   1.4 100   0 33   3 1.5   0.5 12.5   1.2 1651 NNW | 333 0.00 0.00 0.173   0.003 554   7 70   10
Max   85.3 - 54.6 - 52.9 100 48 4.0 19.3 - - 0.00 0.09 0.191 602 -
Avg   - - - - 50.2 - - 2.6 - - - - - - - -
Min   74.3 - 38.0 - 48.2 90 33 1.5 10.1 - - 0.00 0.00 0.024 0 -