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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 8/21/26 12:49 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) 8/19/26 92.7   0.3 1515 63.3   5.9 0606 51.1   3.2 43   1 60   10 25   9 4.4   1.7 16.0   0.9 1710 S | 175 0.00 0.05 0.252   0.010 645   8 50   20
Rockpile Lower (Cooley) 8/20/26 90.9   4.8 1643 51.4   2.4 0551 53.2   0.8 68   10 100   4 29   4 1.8   0.1 10.4   1.2 1443 E | 98 0.00 0.02 - - 0   0
Cloverdale-East (Ranch 83) 8/19/26 95.6   0.3 1646 53.4   1.3 0409 54.3   0.4 - - - 2.9   0.1 15.6   0.3 1505 SSE | 162 0.00 0.00 0.217   0.000 593   7 20   10
Cloverdale-SE (Ranch 38) 8/19/26 93.4   0.6 1542 53.5   1.0 0444 55.1   0.6 69   3 97   2 28   5 6.6   0.9 20.0   0.3 1646 SSE | 153 0.00 0.01 0.224   0.000 548   9 0   10
Geyserville-North (Hoffman) 8/19/26 91.2   1.1 1527 54.6   1.9 0308 57.0   0.4 70   3 94   1 35   7 2.8   0.0 11.9   0.8 1409 SE | 129 0.00 0.00 0.188   0.001 540   8 30   10
Geyserville (Ranch 3) 8/19/26 91.7   1.0 1628 54.6   1.4 0046 55.3   0.6 68   3 100   0 28   7 2.8   0.1 13.1   0.8 1752 SSE | 163 0.00 0.00 0.196   0.002 550   1 20   10
Geyserville-East (Ranch 40) 8/19/26 90.9   0.2 1603 52.7   0.8 0055 55.6   0.5 76   4 99   0 33   6 6.2   0.4 20.7   3.4 1800 S | 174 0.00 0.00 0.210   0.007 576   2 0   10
Geyserville-South (Nervo Station) 8/19/26 90.6   0.3 1619 53.9   1.4 0029 - - - - 3.0   0.2 12.5   0.7 1944 SSW | 200 0.00 0.00 - - 30   10
Peterson (Ranch 09) 8/19/26 89.9   0.5 1603 53.4   1.8 0025 54.0   0.6 69   3 92   1 28   7 3.1   0.2 12.0   0.6 1810 S | 170 0.00 0.00 0.181   0.000 525   3 0   10
Crazy Creek Ranch 8/19/26 91.6   1.8 1557 52.7   2.6 0020 56.0   0.2 70   2 93   0 32   5 2.0   0.0 11.8   1.8 1642 SE | 126 0.00 0.00 0.194   0.002 590   3 30   10
Whitton Ranch (201e) 8/19/26 93.0   1.2 1612 52.9   1.7 0019 55.4   0.4 70   3 98   1 28   6 2.8   0.1 11.3   0.4 1759 S | 182 0.00 0.03 0.189   0.000 526   6 60   10
Lytton East (Shop Hill Bottom) 8/19/26 89.8   0.9 1556 54.1   1.0 0010 54.3   0.4 71   3 94   0 29   5 3.2   0.0 13.3   1.9 1738 SE | 138 0.00 0.00 0.198   0.004 576   5 30   10
Lytton East (Hill 5) 8/19/26 88.8   2.1 1504 53.9   1.0 0010 54.6   0.4 72   3 96   0 31   5 4.4   0.1 16.9   0.1 1659 SE | 138 0.00 0.00 0.190   0.004 514   4 30   10
Lytton West Lower (Lew 6) 8/19/26 89.7   0.2 1607 54.1   1.2 2352 54.7   0.3 71   2 94   0 32   5 3.3   0.1 13.6   2.1 1642 SSE | 165 0.00 0.01 0.193   0.002 560   16 30   10
Lytton West Hill (23PS) 8/19/26 89.0   0.4 1616 54.8   0.5 2354 55.2   0.2 74   3 98   2 32   1 3.7   0.2 15.6   0.0 1807 SE | 139 0.00 0.01 0.198   0.008 579   20 30   10
Big River 8/19/26 88.4   1.9 1608 54.7   0.6 0011 56.0   0.4 74   2 96   2 35   4 2.9   0.1 15.4   1.1 1807 S | 179 0.00 0.00 0.198   0.003 601   13 30   10
Jimtown-North (Piccolo Ranch 15) 8/19/26 92.4   0.8 1612 53.8   1.4 0051 53.9   0.7 68   2 100   0 24   4 1.7   0.0 11.0   0.7 1406 SSW | 205 0.00 0.00 0.175   0.002 531   11 30   10
HWY 128/Chalk Hill Rd (Landslide) 8/19/26 90.8   2.0 1608 55.2   0.0 0200 55.2   0.7 69   2 93   2 29   4 2.5   0.0 12.9   1.0 1700 S | 180 0.00 0.00 0.173   0.001 491   3 30   10
N Chalk Hill Rd (Ranch 63) 8/19/26 89.1   2.5 1555 52.9   1.2 0224 53.8   0.4 68   2 92   1 30   4 2.4   0.1 11.8   0.6 1818 S | 174 0.00 0.00 0.181   0.002 519   6 30   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) 8/19/26 91.8   1.0 1600 49.3   0.6 0053 52.8   0.9 67   3 96   1 27   8 2.1   0.1 12.9   0.6 1446 NNW | 344 0.00 0.00 0.197   0.003 570   2 40   10
Red Tail 8/19/26 89.8   1.5 1507 51.9   1.2 2338 55.3   0.6 70   2 90   1 37   6 3.2   0.2 14.0   0.9 1520 S | 182 0.00 0.01 0.201   0.003 585   3 30   10
Franz Valley (Stornetta) 8/19/26 92.0   0.2 1503 50.6   0.3 0519 53.2   0.8 - 93   2 28   7 1.8   0.0 9.2   1.2 1635 WNW | 292 0.00 0.00 - - 40   10
Upper Dry Creek Valley 8/19/26 91.4   1.6 1635 53.8   1.9 0023 55.4   0.0 70   3 94   2 30   1 3.4   0.1 13.0   1.0 1602 E | 99 0.00 0.00 0.205   0.003 575   11 10   10
Lower Dry Creek Valley 8/19/26 88.1   0.3 1626 55.0   0.6 2345 56.0   0.2 75   3 100   0 34   1 3.0   0.1 15.9   0.3 1751 N | 355 0.00 0.01 0.187   0.007 532   19 60   10
Max   95.6 - 63.3 - 57.0 76 100 37 6.6 20.7 - - 0.00 0.05 0.252 645 -
Avg   - - - - 54.7 69 - - 3.2 - - - - - - - -
Min   88.1 - 49.3 - 51.1 43 60 24 1.7 9.2 - - 0.00 0.00 0.173 491 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 8/21/26 12:49 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) 8/19/26 89.0   1.1 1548 55.2   0.2 0058 54.8   0.0 71 85   0 38   2 0.1 11.0   2.1 1915 0.00 0.02 0.163   0.004 548   19 30
Windsor-East (Ranch 16) 8/19/26 86.8   1.7 1559 55.7   0.9 0035 54.9   0.5 73 93   2 36   7 4.3 14.8   0.6 1601 0.00 0.00 0.194   0.002 567   1 80
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) 8/19/26 85.7   0.9 1514 55.1   0.1 0039 55.3   0.2 76 96   0 37   1 2.3 11.5   0.4 1700 0.00 0.02 0.175   0.005 558   20 80
Fulton-NW (Ranch 5) 8/19/26 84.1   1.5 1541 55.1   0.6 0046 55.2   0.4 77 95   5 41   38 4.0 13.8   0.1 1652 0.00 0.00 0.185   0.005 579   9 100
Bisordi (Fulton) 8/19/26 85.8   1.2 1540 55.7   0.7 0057 56.4   0.2 78 93   1 45   6 2.5 12.9   1.1 1948 0.00 0.00 0.182   0.005 592   14 100
Windsor-South (Laughlin Rd) 8/19/26 87.1   0.0 1516 55.0   0.4 0027 54.8   0.2 75 93   1 37   1 - - - 0.00 0.00 - - 50
Fulton-SE (Barnes Rd) 8/19/26 84.7   2.9 1534 55.7   0.6 0041 55.3   0.2 76 93   1 41   6 0.8 13.9   2.9 1946 0.00 0.00 - - 100
Fulton-SW (Ranch 21) 8/19/26 83.8   1.6 1522 55.0   0.7 0014 54.9   1.9 77 100   0 41   41 3.3 15.0   1.5 1605 0.00 0.00 0.188   0.004 602   8 100
NW Santa Rosa (Piner Road) 8/19/26 84.3   1.3 1519 55.0   0.6 0053 57.8   0.3 86 100   0 46   4 2.1 11.8   0.3 1621 0.00 0.00 - - 90
River Rd South (Denner Ranch) 8/19/26 82.4   1.1 1506 54.4   0.6 2355 -13.2   6.6 25 100   0 0   0 5.1 20.8   2.9 1603 - - - - 70
West Santa Rosa (LOV Vineyard) 8/19/26 84.1   0.7 1459 55.1   0.8 2332 55.0   0.3 78 96   0 40   3 2.5 15.4   2.9 1601 0.00 0.00 0.031   0.001 0   0 100
Guerneville Rd (Prokopakis) 8/19/26 89.7   0.4 1514 56.0   0.7 0648 55.8   0.2 76 95   1 35   0 - - - 0.00 0.02 - - 80
SunnyView Vineyard (SCWC) 8/19/26 83.2   1.9 1500 54.8   0.7 0055 54.4   0.4 77 95   0 41   5 2.2 12.1   0.1 1602 0.00 0.00 0.155   0.010 500   33 80
Guerneville Rd West (Balletto) 8/19/26 82.3   0.8 1453 55.5   0.8 2328 56.6   0.1 82 97   1 48   3 2.9 14.5   1.6 1602 0.00 0.11 - - 90
Sanchietti Ranch 8/19/26 84.4   0.7 1459 56.3   0.7 0054 57.2   0.1 - 94   0 50   4 3.1 13.7   0.4 1556 0.00 0.00 - - 100
Occidental Rd (Sebastopol) 8/19/26 82.5   2.0 1457 55.1   0.7 2115 59.8   0.2 92 100   0 59   6 2.8 17.5   2.4 1554 0.00 0.00 - - 90
Harper's Rest (Windsor-West) 8/19/26 89.4   0.1 1608 54.1   0.0 0059 54.1   0.0 - 95   1 31   1 2.0 10.5   1.6 1616 0.00 0.04 - - 70
Lower Westside Rd (Ranch 12) 8/19/26 86.6   0.4 1504 55.0   0.0 0050 55.2   0.1 76 96   1 37   5 2.4 12.5   2.5 1403 0.00 0.03 - - 60
Guerneville (Laughlin Rd) 8/19/26 83.4   3.2 1438 52.8   0.5 0125 54.0   0.3 74 91   2 42   6 2.4 14.1   1.4 1609 0.00 0.02 - - 100
Korbel (Winery) 8/19/26 86.2   3.5 1445 55.3   0.4 2247 55.2   0.1 74 93   1 40   11 1.0 13.7   6.4 1611 0.00 0.01 - - 100
Forestville (Shone Farms) 8/19/26 87.6   1.0 1552 54.1   0.8 0012 55.8   0.1 77 96   1 38   1 2.0 12.2   1.8 1610 0.00 0.04 0.172   0.003 540   18 60
Forestville-NE (Ranch 30) 8/19/26 86.5   1.4 1530 54.1   0.1 0009 56.3   0.2 79 97   0 42   2 2.9 14.3   3.0 1605 0.00 0.03 0.180   0.004 553   24 30
Foggy Bend (Ranch 41) 8/19/26 86.7   0.4 1558 54.9   0.7 2234 57.1   0.2 78 95   0 47   3 1.9 14.9   4.8 1615 0.00 0.03 0.173   0.007 555   26 60
Last Stop 8/19/26 89.0   0.1 1559 50.8   2.4 2245 55.7   0.3 76 94   1 39   0 2.1 12.7   0.9 1603 0.00 0.02 0.175   0.002 539   16 60
Green Valley Vineyard 8/19/26 85.6   1.0 1545 50.9   0.9 2313 54.8   0.1 78 98   0 38   1 1.8 13.8   2.0 1609 0.00 0.07 0.027   0.007 1   23 100
Park Royal 8/19/26 84.5   1.3 1500 55.1   1.0 0556 54.6   0.3 77 97   0 39   4 - - - 0.00 0.00 - - 100
Merino 8/19/26 87.2   2.2 1511 55.3   0.6 2114 56.8   0.2 80 98   1 42   4 2.2 10.7   1.4 1748 0.00 0.00 0.173   0.007 550   25 80
Green Valley (Sanchietti) 8/20/26 78.5   8.4 1531 50.7   2.0 2359 - - - - - - - - - - - 80
Keefer Ranch (Green Valley) 8/19/26 83.6   0.8 1530 49.2   2.4 2327 55.5   0.1 79 96   0 44   1 - - - 0.00 0.04 - - 100
Graton-West (Dutton Ranch) 8/19/26 84.4   0.0 1507 52.1   0.4 2311 58.5   0.2 86 100   0 42   1 2.3 12.0   1.4 1558 0.00 0.05 - - 100
Graton-South (Mill Station Rd) 8/19/26 79.3   0.9 1437 54.1   0.9 0057 55.6   0.0 84 98   3 49   1 1.2 8.9   0.3 1549 0.00 0.03 - - 0
Occidental (Horseshoe Bend) 8/19/26 78.8   1.3 1514 52.3   0.5 0059 55.1   0.3 - 100   0 48   1 - - - 0.00 0.08 - - 0
Sexton Valley (Jacqueline's Blk) 8/19/26 79.5   1.2 1441 54.7   0.1 0056 56.7   0.1 86 98   0 54   0 1.5 11.2   5.2 1329 0.00 0.09 - - 0
Sebastopol Hills (Burnside Rd) 8/19/26 74.5   0.1 1427 53.4   0.6 0052 55.9   0.1 91 100   0 60   2 3.5 16.4   1.6 1754 0.00 0.00 - - 0
Pleasant Hill 8/19/26 81.7   1.4 1445 54.0   1.6 2109 55.1   0.7 - 96   0 44   4 2.2 12.1   0.1 1545 0.00 0.05 - - 80
Seaview/Fort Ross (Hirsch) 8/19/26 77.4   8.0 1653 55.0   4.7 0406 51.4   0.5 60 88   8 28   0 2.4 10.3   0.6 1131 0.00 0.06 0.174   0.016 621   3 40
Max   89.7 - 56.3 - 59.8 92 100 60 5.1 20.8 - 0.00 0.11 0.194 621 -
Avg   - - - - 53.7 77 - - 2.4 - - - - - - -
Min   74.5 - 49.2 - -13.2 25 85 0 0.1 8.9 - 0.00 0.00 0.027 0 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/21/26 12:49 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 8/19/26 85.7   0.5 1513 51.5   0.1 0313 53.7   0.4 98   0 37   3 1.4   0.0 10.3   1.5 1527 S | 177 0.00 0.01 0.145   0.006 445   11 90   10
Lower Bennett Valley 8/19/26 88.2   0.4 1506 53.2   0.1 0057 55.5   0.2 100   0 36   1 3.3   0.5 13.8   1.8 1940 ESE | 115 0.00 0.00 0.188   0.002 571   2 80   10
Kenwood (Wildwood) 8/19/26 91.6   0.6 1510 53.0   0.9 0214 54.5   0.2 97   1 31   2 3.1   0.2 11.3   0.9 1634 NW | 320 0.00 0.00 0.189   0.004 576   6 0   10
Sonoma Valley (Bedrock) 8/19/26 85.9   0.9 1517 49.8   4.3 0328 52.8   0.1 94   2 35   4 - - - - 0.00 0.00 - - 80   10
Sonoma-West (Arnold) 8/19/26 89.6   0.6 1646 49.0   1.9 0101 53.3   0.2 93   0 32   3 2.3   0.5 14.0   1.5 1700 SSW | 199 0.00 0.00 0.198   0.016 598   56 0   10
Sonoma Valley HS 8/19/26 84.4   1.1 1722 52.8   0.7 0053 56.8   0.2 100   1 45   3 2.1   0.2 9.4   2.1 1831 E | 94 0.00 0.00 0.168   0.014 537   56 100   0
Sonoma East (Bundschu01) 8/19/26 83.0   1.2 1603 50.7   0.8 0300 54.4   0.2 94   0 42   3 3.4   0.2 15.3   1.3 1739 ESE | 116 0.00 0.00 0.179   0.011 550   41 100   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) 8/19/26 83.5   2.1 1602 52.1   2.2 0231 54.6   0.3 94   1 42   4 2.4   0.2 11.1   0.7 1621 S | 187 0.00 0.00 - - 100   0
Ricci Vineyards (Carneros) 8/19/26 80.6   1.2 1537 53.6   1.2 0228 54.7   0.4 94   0 45   9 3.6   0.5 12.7   2.2 1733 SSE | 154 0.00 0.01 0.168   0.015 524   55 100   0
Carneros (Ranch 71) 8/19/26 79.3   0.8 1547 53.6   0.8 0038 55.0   0.6 96   0 48   8 2.8   1.2 13.7   3.3 1930 W | 262 0.00 0.00 0.154   0.020 516   54 100   0
Carneros Upper (Ranch 81) 8/19/26 81.0   0.0 1551 53.6   0.7 0051 40.0   13.1 - - 4.7   1.0 16.1   0.0 2104 W | 262 - - - - 100   0
Carneros Lower (Ranch 81) 8/19/26 79.8   0.2 1605 53.9   1.0 0059 55.5   0.2 93   0 49   1 1.7   0.3 12.2   0.1 1434 S | 179 0.00 0.00 0.148   0.011 479   44 100   0
Rohnert Park-West (Stony Point) 8/19/26 78.8   2.0 1305 54.2   0.5 0058 56.3   0.0 98   1 53   6 2.4   0.2 18.1   0.7 1618 SW | 227 0.00 0.00 - - 0   0
Cartograph Wines Base 8/19/26 76.0   2.1 1502 53.2   0.5 0043 56.0   0.0 99   0 59   6 3.1   0.9 22.1   0.7 1543 SSW | 201 0.00 0.07 0.147   0.002 525   11 0   0
Cartograph Wines Remote 8/19/26 78.2   1.5 1233 54.0   0.4 0045 - - - - - - - - - - - 0   0
Rice-Spivak Vineyard 8/19/26 79.1   1.4 1249 53.6   0.6 0042 - - - - - - - - - - - 0   0
Penngrove (Asellus) 8/19/26 84.8   1.0 1448 54.1   0.2 0032 54.5   0.2 96   1 36   2 3.0   0.6 15.0   2.0 1616 WNW | 282 0.00 0.00 - - 70   20
Petaluma (Ranch 10) 8/19/26 88.2   0.3 1453 54.9   0.2 0053 55.0   0.4 93   0 34   4 2.4   0.4 11.5   1.0 1634 WSW | 254 0.00 0.00 0.171   0.001 536   7 60   10
Max   91.6 - 54.9 - 56.8 100 59 4.7 22.1 - - 0.00 0.07 0.198 598 -
Avg   - - - - 53.9 - - 2.8 - - - - - - - -
Min   76.0 - 49.0 - 40.0 93 31 1.4 9.4 - - 0.00 0.00 0.145 445 -