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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 8/19/26 12:04 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) 8/17/26 88.4   1.2 1605 55.3   0.1 0349 48.7   0.8 50   1 83   2 11   5 4.8   0.5 18.6   0.2 1626 SSW | 204 0.00 0.05 0.226   0.022 605   42 10   10
Rockpile Lower (Cooley) 8/17/26 91.7   1.2 1631 54.3   2.7 0609 52.1   0.3 59   3 94   6 17   1 1.7   0.3 10.9   2.1 1510 SE | 139 0.00 0.02 - - 0   10
Cloverdale-East (Ranch 83) 8/17/26 91.9   0.8 1558 55.4   4.1 0342 52.4   0.8 - - - 2.8   0.3 15.1   0.8 1641 SSE | 164 0.00 0.00 0.202   0.009 568   35 40   10
Cloverdale-SE (Ranch 38) 8/17/26 89.0   0.6 1551 54.0   1.4 0440 53.2   0.6 68   1 96   3 21   5 6.3   0.9 18.2   0.8 1635 SSE | 161 0.00 0.01 0.205   0.009 516   35 20   10
Geyserville-North (Hoffman) 8/17/26 88.7   1.0 1616 56.3   1.4 0237 55.2   1.1 68   1 91   6 23   9 2.8   0.2 12.3   0.4 1756 SE | 131 0.00 0.00 0.175   0.010 502   25 50   10
Geyserville (Ranch 3) 8/17/26 89.0   1.4 1623 55.7   1.3 0229 53.0   1.2 65   2 100   0 18   8 2.9   0.1 12.3   0.3 1857 E | 99 0.00 0.00 0.183   0.015 515   44 40   10
Geyserville-East (Ranch 40) 8/17/26 86.7   0.9 1602 53.1   1.2 0240 54.1   0.2 75   2 98   2 31   0 6.2   0.9 19.6   4.1 1555 S | 190 0.00 0.00 0.193   0.019 532   55 20   10
Geyserville-South (Nervo Station) 8/17/26 87.1   1.1 1550 54.6   0.6 0222 - - - - 2.9   0.1 10.8   2.3 1619 SE | 136 0.00 0.00 - - 50   10
Peterson (Ranch 09) 8/17/26 86.4   1.8 1535 54.2   0.5 0221 52.6   0.2 68   1 91   5 26   1 3.0   0.0 11.8   0.7 1602 S | 174 0.00 0.00 0.173   0.007 515   13 20   10
Crazy Creek Ranch 8/17/26 88.7   0.8 1558 55.0   1.0 0053 55.0   0.4 70   0 92   4 27   4 2.1   0.1 10.1   1.7 1506 SSE | 168 0.00 0.00 0.179   0.009 547   36 50   10
Whitton Ranch (201e) 8/17/26 89.7   0.8 1600 54.0   0.4 0232 54.1   0.4 69   1 96   4 26   0 2.6   0.1 11.2   1.5 1753 SSE | 163 0.00 0.03 0.172   0.014 497   33 80   10
Lytton East (Shop Hill Bottom) 8/17/26 86.5   2.4 1536 54.4   0.1 0155 53.2   0.0 70   2 94   2 26   2 3.1   0.3 14.6   0.5 1759 SE | 140 0.00 0.00 0.183   0.018 539   41 50   10
Lytton East (Hill 5) 8/17/26 86.2   2.0 1600 54.2   0.1 0156 53.3   0.2 71   2 94   3 27   1 4.3   0.4 15.7   0.9 1800 SSE | 168 0.00 0.00 0.176   0.019 483   37 50   20
Lytton West Lower (Lew 6) 8/17/26 86.5   2.7 1546 54.7   0.4 0157 53.6   0.1 71   2 93   7 28   3 3.3   0.4 13.5   0.4 1801 SE | 130 0.00 0.01 0.180   0.010 528   14 50   10
Lytton West Hill (23PS) 8/17/26 85.5   3.4 1558 54.9   0.2 0151 54.2   0.1 73   2 95   4 30   4 3.9   0.5 14.1   0.3 1634 S | 179 0.00 0.01 0.184   0.021 548   55 50   20
Big River 8/17/26 85.8   1.9 1523 55.1   0.7 0611 54.9   0.4 74   2 96   4 33   3 2.7   0.2 12.5   1.3 1612 S | 174 0.00 0.00 0.176   0.019 547   44 50   20
Jimtown-North (Piccolo Ranch 15) 8/17/26 89.5   0.6 1538 54.9   0.8 0212 52.0   1.0 65   2 100   0 20   3 1.7   0.1 12.1   2.6 1625 SSW | 192 0.00 0.00 0.163   0.005 495   21 50   10
HWY 128/Chalk Hill Rd (Landslide) 8/17/26 88.4   1.1 1544 55.2   0.5 0137 53.9   0.3 69   2 93   2 26   1 2.6   0.3 12.8   0.5 1637 S | 169 0.00 0.00 0.162   0.007 463   22 50   10
N Chalk Hill Rd (Ranch 63) 8/17/26 86.5   0.8 1537 54.4   1.0 0058 52.8   0.3 68   2 91   5 27   0 2.4   0.1 11.6   2.4 1650 WSW | 238 0.00 0.00 0.165   0.013 486   29 50   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) 8/17/26 89.5   0.9 1624 50.7   2.1 0409 51.5   0.9 67   0 96   1 23   5 2.3   0.0 13.3   0.6 1723 W | 280 0.00 0.00 0.179   0.014 536   33 60   10
Red Tail 8/17/26 86.9   0.7 1521 52.8   0.8 0013 54.1   0.5 72   2 90   2 35   1 3.0   0.1 14.3   2.3 1704 S | 181 0.00 0.01 0.177   0.015 536   39 50   10
Franz Valley (Stornetta) 8/17/26 88.0   1.0 1605 52.7   4.8 0429 52.6   0.2 - 92   7 26   4 2.0   0.5 11.4   1.7 1313 NNW | 346 0.00 0.00 - - 60   10
Upper Dry Creek Valley 8/17/26 89.8   2.4 1657 54.8   0.2 0205 54.1   0.0 68   2 93   4 20   5 3.3   0.3 12.7   4.5 1753 SE | 125 0.00 0.00 0.194   0.015 549   43 30   10
Lower Dry Creek Valley 8/17/26 84.8   3.7 1555 55.1   0.2 0212 55.0   0.1 74   3 100   0 32   5 3.0   0.4 13.6   0.8 1559 ESE | 119 0.00 0.01 0.176   0.018 513   45 80   20
Max   91.9 - 56.3 - 55.2 75 100 35 6.3 19.6 - - 0.00 0.05 0.226 605 -
Avg   - - - - 53.3 68 - - 3.2 - - - - - - - -
Min   84.8 - 50.7 - 48.7 50 83 11 1.7 10.1 - - 0.00 0.00 0.162 463 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 8/19/26 12:04 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) 8/17/26 85.6   3.4 1525 54.7   0.7 0455 54.3   0.1 72 84   2 39   12 0.0 0.0   0.0 0101 0.00 0.02 0.152   0.012 518   37 50
Windsor-East (Ranch 16) 8/17/26 82.8   2.6 1513 54.9   1.3 0348 54.1   0.1 75 94   2 34   4 4.3 14.8   0.5 1745 0.00 0.00 0.169   0.028 507   70 100
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) 8/17/26 82.1   4.0 1504 55.1   0.3 0318 54.7   0.1 76 95   2 37   13 2.4 11.5   0.1 1642 0.00 0.02 0.166   0.010 535   15 70
Fulton-NW (Ranch 5) 8/17/26 81.1   3.6 1457 55.2   1.1 0324 54.8   2.5 78 95   5 42   39 4.0 13.2   1.2 1719 0.00 0.00 0.163   0.023 518   56 70
Bisordi (Fulton) 8/17/26 81.2   3.3 1446 55.2   1.0 0420 55.8   0.2 79 94   1 45   4 2.5 12.4   0.1 1554 0.00 0.00 0.160   0.023 530   66 100
Windsor-South (Laughlin Rd) 8/17/26 81.8   4.9 1513 54.7   0.2 0306 54.4   0.1 76 93   1 39   9 - - - 0.00 0.00 - - 70
Fulton-SE (Barnes Rd) 8/17/26 81.4   2.9 1500 55.3   0.2 0331 54.8   0.3 77 93   2 39   1 1.6 12.4   3.3 1841 0.00 0.00 - - 100
Fulton-SW (Ranch 21) 8/17/26 79.9   4.5 1437 54.9   0.4 0328 54.3   31.9 78 93   7 42   41 3.3 14.0   0.4 1746 0.00 0.00 0.165   0.026 534   56 60
NW Santa Rosa (Piner Road) 8/17/26 79.9   3.6 1440 55.0   0.1 0236 57.6   0.3 88 100   0 48   2 2.3 13.9   0.7 1656 0.00 0.00 - - 50
River Rd South (Denner Ranch) 8/17/26 78.5   5.3 1415 54.2   0.1 0239 -10.8   2.2 28 100   0 0   0 4.9 16.4   0.9 1802 - - - - 60
West Santa Rosa (LOV Vineyard) 8/17/26 79.9   4.3 1421 54.9   0.1 0232 54.7   0.1 79 95   1 44   4 2.4 14.0   0.1 1641 0.00 0.00 0.027   0.005 0   0 60
Guerneville Rd (Prokopakis) 8/17/26 83.5   4.1 1432 55.9   0.2 0237 55.4   0.4 76 94   4 39   2 - - - 0.00 0.02 - - 100
SunnyView Vineyard (SCWC) 8/17/26 79.8   3.4 1438 54.8   0.1 0302 54.1   0.2 78 94   2 41   2 2.3 11.2   1.2 1511 0.00 0.00 0.141   0.015 456   42 70
Guerneville Rd West (Balletto) 8/17/26 78.3   4.1 1437 55.1   0.1 0227 56.3   0.3 83 97   2 52   4 2.9 13.4   1.5 1638 0.00 0.11 - - 50
Sanchietti Ranch 8/17/26 80.4   3.8 1430 56.6   1.2 0307 57.0   0.1 - 94   1 52   4 3.0 13.9   0.9 1618 0.00 0.00 - - 100
Occidental Rd (Sebastopol) 8/17/26 78.5   4.9 1427 55.0   0.7 0211 59.9   0.2 94 100   0 64   5 2.8 15.6   1.1 1626 0.00 0.00 - - 50
Harper's Rest (Windsor-West) 8/17/26 84.8   5.2 1614 54.0   0.7 0522 53.5   0.3 - 92   4 36   16 1.9 9.6   0.1 1610 0.00 0.04 - - 60
Lower Westside Rd (Ranch 12) 8/17/26 82.8   5.0 1510 54.9   0.9 0638 54.5   0.5 74 93   7 40   18 2.4 11.2   0.4 1630 0.00 0.03 - - 80
Guerneville (Laughlin Rd) 8/17/26 82.6   3.1 1405 53.3   0.5 0145 53.8   0.5 74 91   4 41   4 2.4 13.6   0.4 1609 0.00 0.02 - - 100
Korbel (Winery) 8/17/26 84.9   0.9 1358 54.8   0.4 0220 54.6   0.1 74 92   4 39   5 0.7 8.3   0.1 1656 0.00 0.01 - - 90
Forestville (Shone Farms) 8/17/26 83.6   4.2 1506 53.4   0.0 0708 55.2   0.5 76 94   3 44   20 2.2 9.6   1.6 1558 0.00 0.04 0.167   0.001 541   18 80
Forestville-NE (Ranch 30) 8/17/26 82.9   3.7 1540 54.0   0.2 0320 55.9   0.4 78 95   4 47   19 2.8 12.3   1.0 1545 0.00 0.03 0.177   0.000 561   24 50
Foggy Bend (Ranch 41) 8/17/26 82.5   4.3 1604 55.5   0.5 0340 56.5   0.1 77 92   4 50   18 2.1 12.6   0.5 1741 0.00 0.03 0.174   0.002 567   14 80
Last Stop 8/17/26 84.5   3.4 1516 52.0   0.5 0331 54.9   0.5 75 94   2 44   17 2.1 11.4   0.1 1419 0.00 0.02 0.171   0.001 545   13 80
Green Valley Vineyard 8/17/26 80.0   4.0 1604 51.8   0.6 0218 54.3   0.3 78 96   2 44   15 1.9 14.0   2.6 1645 0.00 0.07 0.026   0.003 8   2 100
Park Royal 8/17/26 79.8   5.1 1430 55.3   0.4 0342 54.4   0.1 78 96   1 40   4 - - - 0.00 0.00 - - 90
Merino 8/17/26 82.6   3.7 1432 55.5   1.2 2136 56.4   0.2 81 98   1 44   3 2.1 11.0   1.7 1648 0.00 0.00 0.159   0.013 513   29 100
Green Valley (Sanchietti) 8/18/26 88.2   7.5 1540 51.8   0.0 0027 - - - - - - - - - - - 100
Keefer Ranch (Green Valley) 8/17/26 78.0   4.4 1525 51.8   0.8 2339 54.9   1.3 79 95   2 48   7 - - - 0.00 0.04 - - 100
Graton-West (Dutton Ranch) 8/17/26 78.1   4.8 1348 52.9   1.4 0051 58.9   0.5 90 100   0 54   11 2.2 11.7   1.1 1517 0.00 0.05 - - 100
Graton-South (Mill Station Rd) 8/17/26 74.4   5.9 1409 54.0   0.4 0147 56.0   0.5 79 96   3 54   8 2.1 10.9   1.1 1558 0.00 0.03 - - 10
Occidental (Horseshoe Bend) 8/17/26 72.3   4.8 1511 52.6   0.3 0201 55.0   0.0 - 100   0 57   6 - - - 0.00 0.08 - - 0
Sexton Valley (Jacqueline's Blk) 8/17/26 74.9   6.0 1403 54.7   0.6 0137 56.6   0.0 88 98   0 58   8 1.7 13.5   0.7 1601 0.00 0.09 - - 0
Sebastopol Hills (Burnside Rd) 8/17/26 71.7   6.3 1400 53.1   0.5 0117 56.1   0.0 92 100   0 63   8 3.8 16.1   2.3 1807 0.00 0.00 - - 0
Pleasant Hill 8/17/26 78.6   4.1 1414 54.3   1.6 0139 55.2   0.3 - 97   0 46   4 2.5 13.5   1.2 1611 0.00 0.05 - - 70
Seaview/Fort Ross (Hirsch) 8/17/26 74.0   0.2 1302 52.2   5.1 0810 52.6   1.3 71 95   6 46   6 2.7 10.4   0.5 0647 0.00 0.06 0.149   0.025 582   38 30
Max   88.2 - 56.6 - 59.9 94 100 64 4.9 16.4 - 0.00 0.11 0.177 582 -
Avg   - - - - 53.5 77 - - 2.5 - - - - - - -
Min   71.7 - 51.8 - -10.8 28 84 0 0.0 0.0 - 0.00 0.00 0.026 0 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 8/19/26 12:04 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 8/17/26 81.0   3.7 1548 52.2   4.8 0426 53.1   0.0 98   0 34   3 1.5   0.0 9.2   1.3 1313 SE | 140 0.00 0.01 0.126   0.014 393   44 80   20
Lower Bennett Valley 8/17/26 83.7   1.7 1429 53.9   1.7 0013 55.0   0.0 100   0 35   0 3.7   0.6 11.4   0.5 1208 NW | 320 0.00 0.00 0.170   0.012 538   29 100   20
Kenwood (Wildwood) 8/17/26 88.5   0.8 1617 54.1   1.0 0231 54.0   0.3 97   3 29   2 3.3   0.7 11.1   0.6 1718 NNW | 347 0.00 0.00 0.173   0.010 533   27 20   10
Sonoma Valley (Bedrock) 8/17/26 85.1   0.0 1540 54.0   1.9 0401 52.6   0.3 92   4 31   3 - - - - 0.00 0.00 - - 100   10
Sonoma-West (Arnold) 8/17/26 88.0   0.5 1451 52.4   2.0 0101 53.2   1.0 92   3 30   2 2.9   0.3 15.3   3.9 1251 SE | 129 0.00 0.00 0.204   0.001 608   10 20   10
Sonoma Valley HS 8/17/26 83.0   1.7 1733 54.3   0.4 0331 56.4   0.1 98   2 43   1 2.3   0.0 8.0   2.8 1844 S | 178 0.00 0.00 0.168   0.002 535   18 80   20
Sonoma East (Bundschu01) 8/17/26 81.4   0.8 1600 51.8   2.4 0357 54.0   0.2 93   1 41   0 3.2   0.0 14.5   0.2 1629 SSE | 155 0.00 0.00 0.171   0.008 519   33 100   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) 8/17/26 83.0   0.0 1550 52.5   1.7 0353 54.1   0.1 92   1 41   3 2.4   0.1 11.5   1.0 1823 SW | 214 0.00 0.00 - - 100   0
Ricci Vineyards (Carneros) 8/17/26 81.0   0.0 1538 54.9   0.2 0321 54.6   0.2 94   1 43   1 5.2   1.6 16.4   3.1 2048 WNW | 299 0.00 0.01 0.173   0.003 526   0 100   0
Carneros (Ranch 71) 8/17/26 78.7   0.4 1549 54.0   0.8 0355 54.6   0.3 95   5 47   1 4.0   1.3 16.4   5.8 1848 W | 274 0.00 0.00 0.161   0.004 517   17 100   10
Carneros Upper (Ranch 81) 8/17/26 80.7   0.3 1606 54.0   0.6 0409 44.3   26.0 - - 7.4   3.2 17.5   0.5 2026 W | 266 - - - - 100   10
Carneros Lower (Ranch 81) 8/17/26 80.0   0.2 1551 54.8   0.4 0405 55.4   0.3 93   2 48   0 1.7   0.0 12.3   0.1 1356 S | 173 0.00 0.00 0.149   0.005 490   16 100   0
Rohnert Park-West (Stony Point) 8/17/26 77.0   6.6 1443 55.1   0.2 0205 56.6   0.4 99   0 52   11 2.7   0.7 16.3   2.1 1648 W | 279 0.00 0.00 - - 0   0
Cartograph Wines Base 8/17/26 76.1   5.2 1420 54.3   0.2 0202 56.4   0.3 99   0 56   5 4.0   0.6 21.5   1.4 1653 S | 181 0.00 0.07 0.138   0.013 495   39 0   0
Cartograph Wines Remote 8/17/26 75.7   5.4 1408 55.0   0.1 0143 - - - - - - - - - - - 10   10
Rice-Spivak Vineyard 8/17/26 78.3   6.4 1414 54.8   0.2 0141 - - - - - - - - - - - 0   0
Penngrove (Asellus) 8/17/26 82.1   3.5 1450 54.8   0.3 0158 54.6   0.5 96   1 34   6 3.4   0.9 13.7   0.5 1343 NW | 306 0.00 0.00 - - 60   10
Petaluma (Ranch 10) 8/17/26 85.7   2.9 1527 55.6   0.2 0307 54.8   0.2 93   1 32   3 3.2   0.9 12.0   0.3 1829 NNW | 343 0.00 0.00 0.169   0.001 532   3 80   10
Max   88.5 - 55.6 - 56.6 100 56 7.4 21.5 - - 0.00 0.07 0.204 608 -
Avg   - - - - 54.0 - - 3.4 - - - - - - - -
Min   75.7 - 51.8 - 44.3 92 29 1.5 8.0 - - 0.00 0.00 0.126 393 -