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Latest Observation

25 Stations

Daily Data | America/Los_Angeles
as of 9/1/26 9:18 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) 8/31/26 77.1   9.5 1552 48.6   3.2 0545 48.6   3.4 69   20 98   18 39   16 7.2   0.4 27.8   6.8 2109 NW | 313 0.00 0.05 0.187   0.045 609   8 50   20
Rockpile Lower (Cooley) 8/31/26 80.1   10.5 1526 49.1   4.6 0641 50.4   3.7 70   21 100   21 37   16 3.3   0.5 21.4   4.9 2102 WNW | 282 0.00 0.02 - - 50   20
Cloverdale-East (Ranch 83) 8/31/26 81.1   10.3 1619 48.1   1.5 0406 51.5   2.6 - - - 2.7   0.5 14.8   0.1 1338 S | 185 0.00 0.00 0.167   0.034 532   46 20   20
Cloverdale-SE (Ranch 38) 8/31/26 78.2   10.7 1621 50.9   3.0 0346 52.5   2.2 76   19 97   13 45   18 5.4   0.6 20.7   1.4 1328 N | 354 0.00 0.01 0.154   0.056 486   45 0   0
Geyserville-North (Hoffman) 8/31/26 79.0   9.9 1600 49.5   4.1 0042 53.0   2.4 75   15 93   2 45   17 2.6   0.2 12.4   0.7 1518 E | 92 0.00 0.00 0.140   0.047 456   85 20   20
Geyserville (Ranch 3) 8/31/26 78.3   10.9 1545 50.6   4.0 0310 51.8   3.8 73   17 100   14 41   19 2.7   0.4 13.2   0.3 1653 ESE | 117 0.00 0.00 0.142   0.050 447   94 30   20
Geyserville-East (Ranch 40) 8/31/26 77.2   9.4 1607 51.2   0.8 0214 53.1   2.0 81   19 98   3 45   15 5.8   0.3 22.2   1.2 2000 SSE | 149 0.00 0.00 0.136   0.076 439   117 0   0
Geyserville-South (Nervo Station) 8/31/26 77.2   10.9 1600 51.6   1.4 0331 - - - - 2.6   0.2 13.5   0.0 1750 S | 170 0.00 0.00 - - 0   10
Peterson (Ranch 09) 8/31/26 77.1   10.3 1546 49.6   4.8 0055 50.8   3.1 74   15 95   6 40   16 2.5   0.1 12.1   0.7 1645 SSE | 160 0.00 0.00 0.136   0.047 456   94 20   20
Crazy Creek Ranch 8/31/26 78.3   10.3 1621 48.8   3.7 0209 52.8   2.8 76   13 94   1 45   16 2.2   0.4 11.5   0.4 1839 SSE | 168 0.00 0.00 0.136   0.053 456   132 0   0
Whitton Ranch (201e) 8/31/26 79.2   10.8 1544 45.2   4.5 0247 51.6   3.4 76   13 100   0 40   15 2.2   0.1 12.2   0.3 1749 S | 182 0.00 0.03 0.136   0.048 429   104 20   20
Lytton East (Shop Hill Bottom) 8/31/26 77.2   10.3 1609 48.0   2.6 0101 51.0   2.4 76   15 99   4 41   17 3.1   0.3 14.2   1.1 1520 SSE | 161 0.00 0.00 0.146   0.058 472   120 0   10
Lytton East (Hill 5) 8/31/26 76.5   10.9 1557 50.4   1.4 0336 51.8   2.3 78   16 98   4 43   18 4.2   0.2 17.6   0.3 1509 SE | 142 0.00 0.00 0.138   0.061 433   98 20   10
Lytton West Lower (Lew 6) 8/31/26 77.8   9.8 1613 47.1   2.9 0341 51.2   2.5 77   14 100   0 42   16 2.5   0.0 16.5   0.8 1638 SE | 142 0.00 0.01 0.145   0.056 485   115 0   10
Lytton West Hill (23PS) 8/31/26 76.6   10.4 1614 51.0   1.2 0322 52.4   2.5 78   16 99   8 44   16 3.3   0.0 14.1   2.7 1548 ESE | 109 0.00 0.01 0.148   0.058 498   109 50   10
Big River 8/31/26 75.7   9.7 1617 50.4   1.8 0248 53.0   1.9 80   15 98   3 48   16 2.4   0.1 14.5   2.5 1759 SSE | 161 0.00 0.00 0.141   0.057 486   128 60   10
Jimtown-North (Piccolo Ranch 15) 8/31/26 78.7   10.5 1606 48.4   4.4 0153 50.6   4.6 72   16 100   12 36   12 1.7   0.4 12.7   1.1 1654 SW | 224 0.00 0.00 0.115   0.049 384   124 0   0
HWY 128/Chalk Hill Rd (Landslide) 8/31/26 78.4   10.5 1524 48.5   5.1 0058 51.9   3.2 74   12 92   1 40   13 2.3   0.5 13.4   0.1 1704 SSE | 165 0.00 0.00 0.124   0.044 387   112 0   0
N Chalk Hill Rd (Ranch 63) 8/31/26 76.2   9.8 1529 47.5   5.3 0057 50.8   3.2 74   14 91   2 42   13 2.5   0.4 13.8   1.1 1651 W | 260 0.00 0.00 0.125   0.046 400   110 20   20
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) 8/31/26 77.3   9.4 1559 49.5   7.4 0102 50.6   3.3 73   10 94   1 39   11 2.5   0.4 13.6   0.3 1817 S | 182 0.00 0.00 0.135   0.052 433   138 0   0
Red Tail 8/31/26 76.2   9.0 1512 47.6   2.9 0220 51.7   1.6 77   11 91   2 48   12 2.9   0.4 15.3   0.0 1607 SE | 137 0.00 0.01 0.135   0.050 453   125 60   10
Franz Valley (Stornetta) 8/31/26 75.5   11.8 1540 48.8   6.7 0143 51.2   3.7 - 92   0 41   12 2.3   1.1 15.2   2.7 1608 SSE | 159 0.00 0.00 - - 10   10
Upper Dry Creek Valley 8/31/26 79.6   9.3 1615 48.7   2.7 0336 51.9   2.2 73   14 94   1 41   15 2.5   0.3 12.8   0.5 1648 SSE | 159 0.00 0.00 0.158   0.046 511   80 20   10
Lower Dry Creek Valley 8/31/26 77.2   9.2 1533 48.1   3.4 0330 51.8   3.1 77   16 100   9 43   13 2.7   0.2 15.0   2.3 1420 ESE | 114 0.00 0.01 0.147   0.051 474   87 30   10
Max   81.1 - 51.6 - 53.1 81 100 48 7.2 27.8 - - 0.00 0.05 0.187 609 -
Avg   - - - - 51.6 75 - - 3.1 - - - - - - - -
Min   75.5 - 45.2 - 48.6 69 91 36 1.7 11.5 - - 0.00 0.00 0.115 384 -

Sonoma County-Central Daily Obs

37 Stations

Daily Data | America/Los_Angeles
as of 9/1/26 9:18 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) 8/31/26 78.4   9.8 1521 51.6   2.4 0225 51.9   0.6 75 85   1 48   16 0.0 0.0   7.6 0101 0.00 0.02 0.126   0.039 455   125 0
Windsor-East (Ranch 16) 8/31/26 74.9   10.5 1603 47.8   3.7 0239 51.6   2.6 76 94   1 45   12 3.2 16.3   0.4 1534 0.00 0.00 0.142   0.053 466   113 90
Mark West-North (Ranch 14) 8/31/26 75.4   8.3 1541 50.1   4.3 0235 51.6   2.5 76 95   1 45   13 1.9 13.1   2.0 1410 0.00 0.00 - - 0
Windsor-SE (Silk Rd) 8/31/26 75.8   8.4 1611 49.2   5.6 0101 52.2   2.8 78 98   3 46   15 2.1 11.1   0.3 1357 0.00 0.02 0.133   0.048 456   121 90
Fulton-NW (Ranch 5) 8/31/26 74.2   8.8 1555 48.6   3.6 0328 52.1   2.4 78 96   2 48   13 2.9 14.4   1.1 1336 0.00 0.00 0.133   0.053 456   112 90
Bisordi (Fulton) 8/31/26 75.3   8.2 1550 46.9   4.1 0239 52.5   1.6 80 94   0 54   14 2.0 13.2   1.8 1601 0.00 0.00 0.137   0.053 480   147 90
Windsor-South (Laughlin Rd) 8/31/26 76.5   8.3 1519 51.0   3.9 0218 52.0   1.7 76 94   1 45   12 - - - 0.00 0.00 - - 80
Fulton-SE (Barnes Rd) 8/31/26 74.0   9.1 1547 48.5   2.0 0345 52.0   1.6 76 93   3 50   14 2.3 12.9   0.6 1543 0.00 0.00 - - 90
Fulton-SW (Ranch 21) 8/31/26 74.3   7.8 1545 47.7   2.2 0332 51.3   1.8 78 93   1 47   12 2.6 13.3   0.2 1724 0.00 0.00 0.142   0.056 486   144 90
NW Santa Rosa (Piner Road) 8/31/26 75.0   7.7 1517 46.6   3.7 0325 54.5   2.0 88 100   0 53   13 1.9 13.0   0.7 1724 0.00 0.00 - - 90
River Rd South (Denner Ranch) 8/31/26 74.5   7.8 1515 47.4   3.8 0243 -3.5   3.3 37 100   0 0   0 3.9 20.2   4.4 1821 - - - - 100
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) 8/31/26 80.4   7.9 1519 47.8   3.8 0240 52.3   2.2 76 97   0 39   10 - - - 0.00 0.04 - - 20
SunnyView Vineyard (SCWC) 8/31/26 73.8   8.7 1547 45.3   3.5 0319 50.3   1.9 77 96   1 47   13 2.0 13.2   1.4 1819 0.00 0.00 0.121   0.044 403   137 100
Guerneville Rd West (Balletto) 8/31/26 73.7   7.7 1533 48.4   4.4 0243 53.2   1.9 82 96   0 54   13 2.5 13.3   0.7 1740 0.00 0.11 - - 90
Sanchietti Ranch 8/31/26 74.5   7.8 1518 47.5   4.4 0228 53.7   1.8 - 95   1 58   15 2.9 17.8   4.4 1847 0.00 0.00 - - 90
Occidental Rd (Sebastopol) 8/31/26 74.7   7.5 1520 46.2   3.6 0229 56.3   2.9 92 100   0 60   18 2.5 14.9   0.7 1418 0.00 0.00 - - 90
Harper's Rest (Windsor-West) 8/31/26 79.1   8.8 1514 48.5   3.3 0339 51.0   2.2 - 96   1 39   15 1.7 10.8   0.3 1355 0.00 0.04 - - 10
Lower Westside Rd (Ranch 12) 8/31/26 75.6   10.0 1447 49.2   4.8 0344 51.7   2.7 78 96   0 46   19 1.9 15.7   2.3 1536 0.00 0.03 - - 90
Guerneville (Laughlin Rd) 8/31/26 74.0   8.7 1344 48.0   4.2 0232 50.5   2.8 77 92   1 47   14 2.5 14.7   1.8 1549 0.00 0.02 - - 90
Korbel (Winery) 8/31/26 74.1   9.7 1332 49.9   3.9 0342 52.1   2.3 78 95   1 48   16 1.7 13.1   0.1 1352 0.00 0.01 - - 90
Forestville (Shone Farms) 8/31/26 77.0   9.6 1508 49.0   1.8 0308 52.9   2.4 79 96   1 47   18 2.0 12.9   1.2 1726 0.00 0.04 0.128   0.053 435   136 90
Forestville-NE (Ranch 30) 8/31/26 76.0   9.1 1432 49.4   4.0 0334 53.1   1.8 82 96   2 51   18 2.6 16.0   0.1 1710 0.00 0.03 0.134   0.056 459   130 0
Foggy Bend (Ranch 41) 8/31/26 75.8   9.0 1429 49.9   4.9 0331 53.6   1.3 81 95   2 54   16 2.4 15.1   1.9 1754 0.00 0.03 0.134   0.050 469   115 90
Last Stop 8/31/26 76.4   9.9 1351 46.9   3.1 0318 51.9   1.9 79 96   2 48   15 2.1 16.1   1.9 1408 0.00 0.02 0.137   0.047 477   108 30
Green Valley Vineyard 8/31/26 73.6   8.5 1357 47.2   1.7 0231 51.9   2.2 81 97   1 49   19 2.9 18.2   5.5 1758 0.00 0.07 0.030   0.010 21   9 90
Park Royal 8/31/26 74.7   7.8 1524 47.9   2.9 0327 51.1   2.1 77 96   5 47   14 - - - 0.00 0.00 - - 90
Merino 8/31/26 77.2   8.1 1521 44.9   4.6 0319 52.6   1.8 83 100   0 49   14 1.7 12.3   0.0 1558 0.00 0.00 0.131   0.058 444   163 90
Green Valley (Sanchietti) 8/31/26 76.3   8.8 1406 44.6   5.6 0138 - - - - - - - - - - - 90
Keefer Ranch (Green Valley) 8/31/26 73.6   8.8 1358 46.2   4.5 0128 52.1   2.4 80 96   2 52   16 - - - 0.00 0.04 - - 60
Graton-West (Dutton Ranch) 8/31/26 75.2   7.6 1348 47.6   5.6 0309 55.8   4.3 90 100   0 51   18 2.0 12.2   1.1 1720 0.00 0.05 - - 90
Graton-South (Mill Station Rd) 8/31/26 71.3   7.1 1506 44.1   3.6 0238 51.7   3.5 81 96   2 54   36 1.2 10.0   0.1 1413 0.00 0.03 - - 40
Occidental (Horseshoe Bend) 8/31/26 69.7   8.8 1327 51.6   2.4 0654 52.8   2.6 - 100   2 56   20 - - - 0.00 0.08 - - 60
Sexton Valley (Jacqueline's Blk) 8/31/26 71.1   8.3 1325 44.6   2.7 0250 53.3   2.5 84 97   2 59   16 2.5 21.5   9.5 1855 0.00 0.09 - - 70
Sebastopol Hills (Burnside Rd) 8/31/26 68.5   6.3 1359 50.3   1.5 0125 53.8   1.9 88 100   2 63   14 3.0 19.6   4.3 1805 0.00 0.00 - - 90
Pleasant Hill 8/31/26 72.5   8.0 1358 46.6   1.8 0253 52.4   2.3 - 97   1 51   14 2.8 18.1   6.1 1756 0.00 0.05 - - 100
Seaview/Fort Ross (Hirsch) 8/31/26 64.6   11.1 1455 48.5   6.1 0606 50.0   2.9 79 95   21 48   17 3.2 12.1   3.0 1733 0.00 0.06 0.144   0.024 584   3 40
Max   80.4 - 51.6 - 56.3 92 100 63 3.9 21.5 - 0.00 0.11 0.144 584 -
Avg   - - - - 50.8 79 - - 2.3 - - - - - - -
Min   64.6 - 44.1 - -3.5 37 85 0 0.0 0.0 - 0.00 0.00 0.030 21 -

Sonoma County-South Daily Obs

19 Stations

Daily Data
as of 9/1/26 9:18 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 8/31/26 71.6   11.0 1457 48.2   0.8 0330 51.0   2.2 97   3 47   13 1.8   0.1 12.0   1.7 1458 S | 188 0.00 0.01 0.105   0.034 360   70 100   10
Lower Bennett Valley 8/31/26 71.7   11.5 1424 41.4   1.3 0353 51.3   1.9 100   0 51   16 3.0   0.2 17.0   4.2 1604 WSW | 248 0.00 0.00 0.124   0.056 438   130 90   10
Kenwood (Wildwood) 8/31/26 74.8   9.1 1417 45.5   2.2 0330 51.4   2.2 100   0 44   10 2.8   0.6 19.6   7.3 1545 NNW | 341 0.00 0.00 0.135   0.036 463   83 30   10
Sonoma Valley (Bedrock) 8/31/26 74.7   4.9 1440 44.9   1.6 0329 49.8   1.6 92   2 43   7 - - - - 0.00 0.00 - - 90   10
Sonoma-West (Arnold) 8/31/26 74.1   7.2 1415 45.0   0.9 0311 50.6   2.1 94   0 46   12 4.5   2.1 22.4   8.6 1621 SSW | 207 0.00 0.00 0.149   0.042 482   120 30   10
Sonoma Valley HS 8/31/26 72.7   6.2 1410 48.1   1.0 0508 53.7   0.8 100   0 54   12 2.9   0.8 13.3   3.3 1746 SSW | 197 0.00 0.00 0.121   0.034 424   95 90   10
Sonoma East (Bundschu01) 8/31/26 73.1   5.0 1443 45.5   0.3 0506 51.2   1.4 94   1 47   9 4.0   0.6 21.5   6.1 1723 WSW | 248 0.00 0.00 0.134   0.031 435   94 90   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) 8/31/26 74.4   4.8 1416 45.6   0.1 0517 51.6   1.8 93   1 45   9 4.3   1.7 18.8   7.4 1558 WSW | 247 0.00 0.00 - - 90   10
Ricci Vineyards (Carneros) 8/31/26 74.3   2.1 1424 46.1   0.2 0456 51.2   1.0 96   0 46   3 5.4   2.1 20.2   6.4 1757 SW | 225 0.00 0.01 0.147   0.020 464   86 100   20
Carneros (Ranch 71) 8/31/26 72.3   2.0 1422 51.2   2.2 0532 52.3   0.4 94   4 48   3 7.7   4.9 26.9   15.7 1633 W | 263 0.00 0.00 0.143   0.011 448   87 60   10
Carneros Upper (Ranch 81) 8/31/26 73.0   4.4 1426 52.1   2.6 0548 52.0   0.2 - - 10.0   6.0 29.6   12.9 1636 WSW | 245 - - - - 60   10
Carneros Lower (Ranch 81) 8/31/26 79.6   2.9 1529 50.1   2.4 0157 52.7   0.8 98   2 41   4 0.8   1.2 14.8   3.1 1434 SSE | 166 0.00 0.00 0.011   0.013 0   0 60   10
Rohnert Park-West (Stony Point) 8/31/26 71.7   7.9 1340 41.1   0.5 0346 52.7   2.8 97   1 56   12 3.5   1.4 22.1   5.6 1740 W | 272 0.00 0.00 - - 90   10
Cartograph Wines Base 8/31/26 69.8   7.4 1331 49.3   0.9 0354 54.2   1.7 98   1 63   15 4.8   1.3 25.9   6.6 1751 SSW | 207 0.00 0.09 0.114   0.057 423   164 80   10
Cartograph Wines Remote 8/31/26 69.4   11.3 1324 45.5   0.9 0347 - - - - - - - - - - - 70   10
Rice-Spivak Vineyard 8/31/26 72.6   7.9 1328 38.4   0.4 0359 - - - - - - - - - - - 80   10
Penngrove (Asellus) 8/31/26 72.2   10.8 1334 45.0   3.0 0345 51.6   3.2 97   0 48   15 3.0   0.8 15.9   0.8 1628 WSW | 243 0.00 0.00 - - 90   10
Petaluma (Ranch 10) 8/31/26 71.2   14.1 1358 44.8   1.0 0422 51.6   2.0 95   5 52   20 3.2   1.6 16.4   3.9 1403 SSW | 204 0.00 0.00 0.117   0.056 390   164 60   10
Max   79.6 - 52.1 - 54.2 100 63 10.0 29.6 - - 0.00 0.09 0.149 482 -
Avg   - - - - 51.8 - - 4.1 - - - - - - - -
Min   69.4 - 38.4 - 49.8 92 41 0.8 12.0 - - 0.00 0.00 0.011 0 -