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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 8/20/26 12:06 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) 8/18/26 92.4   4.0 1608 57.4   2.1 0608 47.8   0.9 42   8 70   13 16   4 6.1   1.4 16.9   1.8 1548 SSE | 160 0.00 0.05 0.262   0.036 637   32 30   20
Rockpile Lower (Cooley) 8/18/26 95.6   3.9 1632 52.7   1.6 0558 52.0   0.0 58   1 100   6 15   1 1.9   0.1 14.8   3.9 1748 WNW | 287 0.00 0.02 - - 0   0
Cloverdale-East (Ranch 83) 8/18/26 95.9   4.0 1629 54.7   0.7 0248 53.9   1.5 - - - 2.8   0.0 15.9   0.8 1435 SSW | 197 0.00 0.00 0.217   0.015 586   18 30   10
Cloverdale-SE (Ranch 38) 8/18/26 92.8   3.8 1730 54.5   0.5 0241 54.6   1.3 65   3 95   0 23   2 5.7   0.6 19.6   1.4 1358 SE | 145 0.00 0.01 0.224   0.019 539   24 10   10
Geyserville-North (Hoffman) 8/18/26 92.3   3.6 1626 56.5   0.2 0132 56.5   1.3 67   1 92   1 28   4 2.8   0.0 12.7   0.4 1747 SSE | 162 0.00 0.00 0.187   0.012 532   30 40   10
Geyserville (Ranch 3) 8/18/26 92.7   3.7 1659 56.0   0.3 0132 54.7   1.7 66   0 100   0 21   4 2.9   0.0 12.3   0.0 1812 SE | 133 0.00 0.00 0.198   0.015 550   34 30   10
Geyserville-East (Ranch 40) 8/18/26 90.7   4.0 1612 53.5   0.4 0507 55.1   1.0 72   3 99   1 27   4 5.8   0.4 17.3   2.3 1746 SSW | 198 0.00 0.00 0.217   0.024 574   42 10   10
Geyserville-South (Nervo Station) 8/18/26 90.9   3.8 1657 55.3   0.7 0532 - - - - 2.8   0.2 11.8   1.0 1727 SSW | 197 0.00 0.00 - - 40   10
Peterson (Ranch 09) 8/18/26 90.4   4.0 1641 55.2   1.1 0101 53.4   0.8 66   2 92   0 22   4 2.9   0.1 11.4   0.4 2108 S | 187 0.00 0.00 0.181   0.008 528   13 10   10
Crazy Creek Ranch 8/18/26 93.4   4.7 1647 55.3   0.3 0101 55.8   0.9 68   2 93   1 27   0 2.1   0.1 10.1   0.0 1759 S | 170 0.00 0.00 0.192   0.013 587   40 40   10
Whitton Ranch (201e) 8/18/26 94.2   4.5 1618 54.5   0.5 0108 54.9   0.8 67   2 96   0 22   4 2.6   0.0 10.8   0.3 1245 SSW | 198 0.00 0.03 0.189   0.017 532   35 70   10
Lytton East (Shop Hill Bottom) 8/18/26 90.7   4.2 1624 55.2   0.8 0625 53.9   0.7 68   2 94   0 24   2 3.2   0.0 15.2   0.6 1737 SE | 141 0.00 0.00 0.202   0.019 581   42 40   10
Lytton East (Hill 5) 8/18/26 90.9   4.7 1635 54.9   0.8 0630 54.2   0.9 69   2 96   1 26   1 4.3   0.0 17.0   1.3 1718 S | 170 0.00 0.00 0.194   0.018 518   35 40   10
Lytton West Lower (Lew 6) 8/18/26 89.9   3.4 1638 55.2   0.5 0538 54.4   0.8 69   2 94   1 27   1 3.4   0.1 15.7   2.2 1743 SE | 145 0.00 0.01 0.191   0.011 543   15 40   10
Lytton West Hill (23PS) 8/18/26 88.6   3.1 1628 55.3   0.4 0639 55.0   0.8 71   2 96   1 31   2 3.9   0.1 15.6   1.6 1633 S | 183 0.00 0.01 0.206   0.022 599   51 40   10
Big River 8/18/26 90.3   4.5 1608 55.3   0.3 0600 55.6   0.7 72   2 98   2 30   3 2.8   0.1 14.3   1.8 1732 SSE | 160 0.00 0.00 0.195   0.019 588   42 40   10
Jimtown-North (Piccolo Ranch 15) 8/18/26 93.2   3.7 1605 55.2   0.2 0114 53.2   1.2 65   0 100   0 20   0 1.7   0.0 11.6   0.4 1554 W | 276 0.00 0.00 0.173   0.010 520   25 40   10
HWY 128/Chalk Hill Rd (Landslide) 8/18/26 92.8   4.4 1623 55.2   0.0 0532 54.5   0.6 67   2 95   2 25   1 2.5   0.2 12.0   0.8 1722 S | 190 0.00 0.00 0.172   0.010 488   25 40   10
N Chalk Hill Rd (Ranch 63) 8/18/26 91.6   5.1 1615 54.1   0.3 0105 53.4   0.5 66   2 93   2 26   1 2.4   0.0 11.2   0.3 1650 W | 265 0.00 0.00 0.179   0.014 513   27 40   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) 8/18/26 92.8   3.3 1621 49.9   0.8 0147 51.9   0.4 64   2 97   1 19   4 2.0   0.2 12.3   1.0 1744 WSW | 250 0.00 0.00 0.194   0.015 572   36 50   10
Red Tail 8/18/26 91.3   4.4 1528 53.2   0.3 0101 54.7   0.6 68   3 92   2 31   4 3.0   0.1 14.9   0.6 1711 S | 191 0.00 0.01 0.198   0.021 582   46 40   10
Franz Valley (Stornetta) 8/18/26 91.8   3.8 1612 50.9   1.8 0212 52.4   0.1 - 95   3 21   5 1.8   0.2 10.5   1.0 1737 WNW | 290 0.00 0.00 - - 50   10
Upper Dry Creek Valley 8/18/26 93.0   3.2 1645 55.8   1.0 0611 55.5   1.4 67   1 93   0 29   9 3.3   0.0 12.0   0.7 1307 SE | 128 0.00 0.00 0.208   0.014 586   37 20   10
Lower Dry Creek Valley 8/18/26 88.4   3.6 1650 55.6   0.5 0606 55.9   0.9 73   1 100   0 33   1 3.1   0.0 15.6   2.0 1713 N | 355 0.00 0.01 0.194   0.018 551   38 70   10
Max   95.9 - 57.4 - 56.5 73 100 33 6.1 19.6 - - 0.00 0.05 0.262 637 -
Avg   - - - - 54.1 66 - - 3.1 - - - - - - - -
Min   88.4 - 49.9 - 47.8 42 70 15 1.7 10.1 - - 0.00 0.00 0.172 488 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 8/20/26 12:06 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) 8/18/26 90.1   4.5 1606 54.9   0.3 0720 54.8   0.5 70 85   1 36   3 0.0 8.8   8.8 1910 0.00 0.02 0.167   0.015 566   48 40
Windsor-East (Ranch 16) 8/18/26 88.5   5.7 1632 54.8   0.1 0658 54.4   0.3 72 96   2 29   5 4.0 14.2   0.6 1931 0.00 0.00 0.196   0.027 568   61 90
Mark West-North (Ranch 14) 7/27/26 86.2   2.9 1404 47.0   1.0 0543 51.1   1.0 62 96   0 32   5 1.8 12.7   0.3 1723 0.00 0.01 0.038   0.002 0   0 60
Windsor-SE (Silk Rd) 8/18/26 86.6   4.5 1548 55.0   0.0 0631 55.1   0.4 74 96   1 36   1 2.3 11.9   0.4 1709 0.00 0.02 0.180   0.014 579   44 60
Fulton-NW (Ranch 5) 8/18/26 85.6   4.5 1622 54.5   0.7 0645 54.9   0.1 75 100   5 3   39 4.1 13.7   0.5 1717 0.00 0.00 0.190   0.027 589   70 90
Bisordi (Fulton) 8/18/26 87.0   5.8 1621 55.0   0.3 0634 56.1   0.4 76 94   1 39   6 2.5 11.8   0.7 1517 0.00 0.00 0.187   0.027 606   76 90
Windsor-South (Laughlin Rd) 8/18/26 87.1   5.3 1549 54.6   0.1 0647 54.6   0.3 73 94   0 36   3 - - - 0.00 0.00 - - 60
Fulton-SE (Barnes Rd) 8/18/26 87.6   6.2 1602 55.1   0.2 0629 55.0   0.3 74 94   1 35   4 1.1 11.0   1.4 2038 0.00 0.00 - - 90
Fulton-SW (Ranch 21) 8/18/26 85.4   5.5 1607 54.3   0.6 0516 53.0   1.3 74 100   7 0   41 3.3 13.4   0.5 1700 0.00 0.00 0.192   0.027 611   76 80
NW Santa Rosa (Piner Road) 8/18/26 85.6   5.7 1601 54.4   0.6 0625 57.5   0.1 84 100   0 42   7 2.3 12.1   1.8 1637 0.00 0.00 - - 70
River Rd South (Denner Ranch) 8/18/26 83.5   5.0 1551 53.9   0.3 0656 -6.6   4.1 28 100   0 0   0 4.9 18.0   1.5 1640 - - - - 50
West Santa Rosa (LOV Vineyard) 8/18/26 84.8   4.9 1548 54.3   0.5 0643 54.8   0.0 76 96   0 37   6 2.0 12.5   1.5 1731 0.00 0.00 0.030   0.003 0   0 80
Guerneville Rd (Prokopakis) 8/18/26 89.3   5.8 1538 55.3   0.6 0519 55.6   0.1 74 96   2 35   5 - - - 0.00 0.02 - - 90
SunnyView Vineyard (SCWC) 8/18/26 85.1   5.3 1556 54.1   0.6 0602 54.0   0.0 75 95   1 35   6 2.2 12.0   0.8 1703 0.00 0.00 0.165   0.024 534   77 60
Guerneville Rd West (Balletto) 8/18/26 83.1   4.8 1528 54.7   0.5 0633 56.5   0.2 80 98   1 45   7 3.0 12.9   0.4 1729 0.00 0.11 - - 70
Sanchietti Ranch 8/18/26 85.1   4.7 1551 55.5   1.1 0538 57.1   0.1 - 95   0 46   6 3.2 14.1   0.2 1624 0.00 0.00 - - 100
Occidental Rd (Sebastopol) 8/18/26 84.5   6.0 1539 54.4   0.7 0533 59.6   0.3 90 100   0 53   10 2.5 15.1   0.4 1654 0.00 0.00 - - 70
Harper's Rest (Windsor-West) 8/18/26 89.3   4.5 1548 54.1   0.1 0712 54.2   0.6 - 95   3 32   4 2.0 8.9   0.7 1605 0.00 0.04 - - 80
Lower Westside Rd (Ranch 12) 8/18/26 87.0   4.2 1650 55.0   0.1 0713 55.2   0.6 74 97   4 31   8 2.5 10.0   1.2 1235 0.00 0.03 - - 70
Guerneville (Laughlin Rd) 8/18/26 86.6   4.0 1533 53.2   0.1 0059 54.3   0.5 72 93   2 36   5 2.2 12.7   0.9 1600 0.00 0.02 - - 90
Korbel (Winery) 8/18/26 89.7   4.8 1526 55.7   0.9 0514 55.1   0.5 71 94   3 29   10 0.3 7.2   1.1 1046 0.00 0.01 - - 80
Forestville (Shone Farms) 8/18/26 88.6   5.0 1613 53.3   0.2 0704 55.9   0.7 76 97   2 39   5 2.2 10.4   0.8 1936 0.00 0.04 0.175   0.008 558   17 70
Forestville-NE (Ranch 30) 8/18/26 87.9   5.0 1640 54.2   0.2 0703 56.6   0.7 77 98   3 39   8 2.9 11.3   0.9 1932 0.00 0.03 0.184   0.007 577   16 40
Foggy Bend (Ranch 41) 8/18/26 87.1   4.6 1544 55.6   0.2 0508 57.3   0.8 77 95   3 43   7 1.9 10.2   2.4 1624 0.00 0.03 0.180   0.006 580   14 70
Last Stop 8/18/26 88.9   4.4 1550 53.3   1.2 2329 56.0   1.0 74 95   1 40   4 2.1 11.8   0.4 1319 0.00 0.02 0.177   0.006 555   10 70
Green Valley Vineyard 8/18/26 84.6   4.6 1539 51.7   0.1 0107 54.9   0.6 77 98   2 37   6 1.9 11.8   2.2 1721 0.00 0.07 0.034   0.008 24   16 100
Park Royal 8/18/26 85.8   6.0 1608 54.1   1.1 0521 54.3   0.1 75 97   1 35   5 - - - 0.00 0.00 - - 100
Merino 8/18/26 89.4   6.8 1604 54.7   0.7 0536 56.6   0.2 79 99   1 38   6 2.4 12.1   1.2 1711 0.00 0.00 0.180   0.021 575   62 90
Green Valley (Sanchietti) 8/19/26 86.9   1.3 1501 48.6   3.1 2329 - - - - - - - - - - - 90
Keefer Ranch (Green Valley) 8/18/26 84.4   6.4 1541 51.5   0.3 0045 55.7   0.7 78 96   1 45   3 - - - 0.00 0.04 - - 100
Graton-West (Dutton Ranch) 8/18/26 84.4   6.3 1520 52.5   0.4 0116 58.3   0.6 85 100   0 43   11 2.2 10.6   1.1 1627 0.00 0.05 - - 100
Graton-South (Mill Station Rd) 8/18/26 78.4   4.0 1526 53.2   0.7 2305 55.6   0.4 72 95   1 49   6 1.7 9.2   1.7 1612 0.00 0.03 - - 0
Occidental (Horseshoe Bend) 8/18/26 77.5   5.2 1554 52.8   0.2 0658 54.8   0.2 - 100   0 48   10 - - - 0.00 0.08 - - 0
Sexton Valley (Jacqueline's Blk) 8/18/26 78.3   3.4 1518 54.8   0.1 0720 56.5   0.1 84 98   0 54   4 1.4 16.4   2.9 1715 0.00 0.09 - - 0
Sebastopol Hills (Burnside Rd) 8/18/26 74.6   3.0 1512 52.8   0.4 0656 55.8   0.3 89 100   0 58   5 3.1 14.7   1.4 1718 0.00 0.00 - - 0
Pleasant Hill 8/18/26 83.1   4.5 1543 52.4   1.9 2226 54.4   0.8 - 96   1 40   6 2.0 12.2   1.3 1650 0.00 0.05 - - 60
Seaview/Fort Ross (Hirsch) 8/18/26 85.3   11.3 1511 50.3   1.9 0620 51.9   0.7 55 96   0 28   18 2.4 9.7   0.7 1747 0.00 0.06 0.190   0.041 618   36 50
Max   90.1 - 55.7 - 59.6 90 100 58 4.9 18.0 - 0.00 0.11 0.196 618 -
Avg   - - - - 53.7 75 - - 2.4 - - - - - - -
Min   74.6 - 48.6 - -6.6 28 85 0 0.0 7.2 - 0.00 0.00 0.030 0 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/20/26 12:06 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 8/18/26 86.2   5.2 1629 51.6   0.6 0520 53.3   0.2 98   0 34   0 1.5   0.1 8.8   0.4 1626 SSW | 200 0.00 0.01 0.139   0.013 434   41 100   20
Lower Bennett Valley 8/18/26 87.8   4.1 1556 53.1   0.8 0541 55.3   0.3 100   0 35   0 3.8   0.1 12.1   0.7 2102 E | 101 0.00 0.00 0.186   0.016 569   30 90   10
Kenwood (Wildwood) 8/18/26 92.2   3.7 1557 53.9   0.2 0059 54.3   0.2 96   0 29   0 2.8   0.5 10.4   0.7 1834 NNW | 335 0.00 0.00 0.185   0.012 570   36 10   10
Sonoma Valley (Bedrock) 8/18/26 86.8   1.7 1606 54.0   0.1 0059 52.8   0.2 92   0 31   0 - - - - 0.00 0.00 - - 90   10
Sonoma-West (Arnold) 8/18/26 90.2   2.2 1732 50.9   1.5 0114 53.5   0.3 93   1 29   1 2.7   0.2 12.5   2.8 1846 SSW | 206 0.00 0.00 0.214   0.010 655   47 10   10
Sonoma Valley HS 8/18/26 85.5   2.5 1749 53.6   0.7 0128 56.6   0.2 99   1 42   1 2.3   0.0 7.3   0.7 1934 SSW | 210 0.00 0.00 0.182   0.014 592   58 100   20
Sonoma East (Bundschu01) 8/18/26 84.2   2.8 1522 51.5   0.2 0136 54.2   0.2 94   1 39   2 3.2   0.0 14.0   0.4 1747 SE | 125 0.00 0.00 0.190   0.019 590   72 100   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) 8/18/26 85.6   2.6 1500 54.3   1.7 0122 54.2   0.1 92   0 37   4 2.5   0.1 11.8   0.3 1325 ESE | 119 0.00 0.00 - - 100   0
Ricci Vineyards (Carneros) 8/18/26 81.8   0.8 1504 54.8   0.1 0059 54.3   0.3 94   1 36   7 4.1   1.0 14.9   1.5 0125 W | 277 0.00 0.01 0.183   0.010 579   53 100   0
Carneros (Ranch 71) 8/18/26 80.1   1.4 1536 54.4   0.4 0601 54.4   0.1 96   1 39   7 3.9   0.1 17.0   0.5 1908 WSW | 245 0.00 0.00 0.174   0.013 570   53 100   0
Carneros Upper (Ranch 81) 8/18/26 81.0   0.3 1540 54.3   0.2 0634 26.9   17.4 - - 5.8   1.7 16.1   1.5 0143 WSW | 242 - - - - 100   0
Carneros Lower (Ranch 81) 8/18/26 79.9   0.1 1608 54.9   0.1 0056 55.7   0.3 93   0 49   1 2.0   0.3 12.1   0.2 1324 SSE | 161 0.00 0.00 0.159   0.010 522   33 100   0
Rohnert Park-West (Stony Point) 8/18/26 80.8   3.8 1534 54.7   0.5 0626 56.3   0.3 99   0 47   5 2.2   0.5 17.4   1.1 1703 SW | 235 0.00 0.00 - - 0   0
Cartograph Wines Base 8/18/26 78.1   2.0 1533 53.8   0.5 0539 56.0   0.4 99   0 53   3 3.9   0.0 21.5   0.0 1709 SW | 230 0.00 0.07 0.149   0.011 536   42 0   0
Cartograph Wines Remote 8/18/26 76.7   1.0 1532 54.4   0.6 0527 - - - - - - - - - - - 0   10
Rice-Spivak Vineyard 8/18/26 80.5   2.2 1511 54.2   0.5 0556 - - - - - - - - - - - 0   0
Penngrove (Asellus) 8/18/26 85.8   3.7 1500 54.3   0.5 0420 54.3   0.3 96   0 34   1 2.5   1.0 13.0   0.7 1819 WNW | 284 0.00 0.00 - - 50   10
Petaluma (Ranch 10) 8/18/26 88.5   2.8 1525 55.1   0.5 0409 54.6   0.2 94   0 31   2 2.8   0.4 12.4   0.4 1722 NW | 324 0.00 0.00 0.172   0.003 543   11 70   10
Max   92.2 - 55.1 - 56.6 100 53 5.8 21.5 - - 0.00 0.07 0.214 655 -
Avg   - - - - 52.9 - - 3.1 - - - - - - - -
Min   76.7 - 50.9 - 26.9 92 29 1.5 7.3 - - 0.00 0.00 0.139 434 -