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Latest Observation

13 Stations

Daily Data | America/Los_Angeles
as of 8/22/26 9:32 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)
Montesol 8/21/26 86.8   5.0 1512 55.7   0.7 0018 - - - - - - - 0.00 0.00 - - 70   20
Pope Valley (Weeks Lake) 8/21/26 92.5   2.0 1501 51.5   2.9 0622 47.4   1.7 92   6 14   1 1.9   0.1 15.3   2.4 1231 SSW | 200 0.00 0.00 0.195   0.004 531   2 0   10
Dollarhide Base 8/21/26 93.9   3.3 1503 56.4   2.4 0643 52.4   2.8 89   5 16   10 3.6   0.3 17.3   2.8 1742 SW | 223 0.00 0.00 0.228   0.000 555   39 0   0
Dollarhide 1AS Remote 8/21/26 95.4   2.0 1502 52.7   1.9 0623 51.1   2.5 90   1 14   11 2.8   0.5 16.0   0.5 1754 WSW | 246 - - - - 0   0
Dollarhide 16A Remote 8/21/26 94.4   2.0 1605 56.0   2.3 0625 52.3   2.9 88   6 16   9 - - - - - - - - 0   0
Dollarhide 18A Remote 8/21/26 93.4   0.4 1512 51.5   3.5 0629 50.9   2.0 93   2 15   13 - - - - - - - - 0   0
Hardin Rd (Eakle) 8/21/26 94.4   0.2 1500 54.6   3.0 0608 - - - - - - - - - - - 0   0
Angwin 8/21/26 82.8   2.5 1426 66.2   0.0 0520 38.6   4.6 53   4 13   3 2.6   0.2 14.4   0.6 1544 SSE | 156 0.00 0.00 0.061   0.005 0   0 100   0
Lower Angwin (Pioneer) 8/21/26 85.7   0.0 1534 50.3   4.0 0243 - - - 2.3   0.2 13.2   0.6 1803 SSW | 210 - - - - 100   0
Las Posadas (Cal Fire) 8/21/26 87.7   0.8 1559 52.6   2.4 0608 49.3   4.2 96   3 11   22 8.5   0.7 22.0   3.5 1217 WSW | 244 0.00 0.00 0.236   0.032 531   1 -
Deer Park 8/21/26 91.3   0.5 1548 54.3   0.8 0455 49.8   3.5 95   2 9   20 3.4   0.7 16.1   3.6 1517 WNW | 289 0.00 0.00 0.175   0.029 399   14 0   0
Lower Chiles Valley (Brown) 8/21/26 89.4   0.5 1627 53.3   0.4 0639 50.0   3.0 100   0 16   8 4.7   0.4 16.4   2.2 1541 WNW | 293 0.00 0.00 0.197   0.005 570   10 0   0
Moss Creek Vineyard/Reservior 8/21/26 94.8   3.9 1416 54.8   1.5 0639 48.8   2.1 90   1 15   2 - - - - 0.00 0.00 - - 0   0
Max   95.4 - 66.2 - 52.4 100 16 8.5 22.0 - - 0.00 0.00 0.236 570 -
Avg   - - - - 49.0 - - 3.7 - - - - - - - -
Min   82.8 - 50.3 - 38.6 53 9 1.9 13.2 - - 0.00 0.00 0.061 0 -

Northern & Central Napa County

27 Stations

Daily Data | America/Los_Angeles
as of 8/22/26 9:32 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)
Calistoga-North 8/21/26 92.4   1.9 1524 55.0   0.8 0159 54.5   0.5 93   1 27   4 - - - - 0.00 0.00 - - 20   10
Diamond Mtn (Schramsberg) 8/21/26 89.7   0.4 1533 53.0   0.5 0552 49.4   2.6 100   0 15   4 - - - - 0.00 0.00 - - 0   0
Diamond Mtn (McEachran) 8/21/26 88.8   0.7 1439 54.2   1.1 0605 50.2   1.9 94   2 14   5 - - - - - - - - 0   0
St. Helena-North 8/21/26 95.3   0.6 1511 55.0   0.2 0214 48.3   3.7 85   0 10   11 2.0 13.6   1.1 1500 WNW | 282 0.00 0.00 0.180   0.012 508   23 0   0
St. Helena (NVV Office) 8/21/26 95.1   2.9 1525 56.0   0.2 0217 - - - 1.5 10.2   0.8 1654 WSW | 254 0.00 0.00 - - 0   0
Tiara Fria (East St. Helena) 8/21/26 91.4   3.4 1625 53.8   0.2 0242 51.6   2.4 93   1 13   21 2.3 12.1   0.6 1736 WNW | 294 0.00 0.00 - - 0   10
Prisoner Winery 8/21/26 95.2   3.8 1538 52.1   2.5 0332 50.8   3.1 95   3 12   18 1.4 11.4   2.5 1822 NW | 326 0.00 0.00 0.073   0.018 132   28 0   0
Rutherford Hill Estate 8/21/26 93.8   4.7 1655 54.1   0.5 0226 52.5   1.8 100   0 12   20 1.4 11.8   0.4 1543 SSE | 159 0.00 0.00 0.167   0.015 497   26 0   0
Rutherford-North (Mee Ln) 8/21/26 91.5   3.9 1724 49.8   1.6 0252 50.9   1.9 93   2 14   21 2.5 15.6   2.4 1914 SE | 136 0.00 0.00 0.176   0.016 476   23 0   10
Rutherford (STS) 8/21/26 92.7   2.3 1634 49.8   1.1 0304 53.7   1.3 91   0 19   19 1.8 14.0   1.0 1611 SW | 218 0.00 0.00 0.191   0.015 563   26 0   0
Oakville-NE (Ranch 88) 8/21/26 91.6   3.2 1639 50.3   1.4 0249 50.5   1.2 91   1 12   20 1.9 12.4   3.2 1615 SSE | 160 0.00 0.00 0.172   0.007 479   9 100   0
OV561-East 8/21/26 94.8   4.6 1636 52.2   0.7 0221 - - - - - - - - - - - 30   10
Oakville 8/21/26 89.4   4.7 1630 50.7   0.2 0322 52.2   1.0 93   0 20   18 2.9 14.8   4.7 1932 SE | 128 0.00 0.00 0.193   0.010 544   4 90   10
OV518-West 8/21/26 90.1   5.5 1743 51.0   0.5 0248 - - - - - - - - - - - 90   10
To Kalon Remote (TKKE) 8/21/26 92.5   4.0 1811 51.3   0.2 0251 - - - - - - - - - - - 30   10
To Kalon 8/21/26 89.9   4.3 1610 51.7   0.2 0324 53.6   0.7 96   1 23   16 2.7 12.4   5.6 1508 SE | 136 0.00 0.00 0.180   0.005 509   2 90   10
To Kalon Remote (TKN5) 8/21/26 91.0   2.6 1550 51.9   0.4 0248 - - - - - - - - - - - 30   10
Yountville (Ranch 67) 8/21/26 87.6   4.1 1701 50.3   1.5 0252 52.3   0.2 92   1 17   20 3.2 13.9   3.0 1435 SSE | 162 0.00 0.00 0.188   0.008 584   12 90   10
Stags Leap Dist (Silverado Vineyards) 8/21/26 89.3   5.5 1626 51.1   0.3 0250 52.5   0.2 93   1 28   8 3.1 16.1   0.7 1905 E | 88 0.00 0.00 0.188   0.015 524   16 100   0
Borreo (Soda Canyon) 8/21/26 85.4   2.2 1635 48.7   0.3 0421 51.3   0.4 96   1 30   7 1.9 11.4   1.4 1537 S | 174 0.00 0.00 0.185   0.017 584   30 100   0
Wappo Hill Floor 8/21/26 89.0   4.4 1707 50.6   1.1 0310 54.0   0.4 100   0 29   10 2.7 15.3   0.5 1859 SE | 145 0.00 0.00 0.186   0.014 539   20 90   10
Stags Leap Dist (Chimney Rock) 8/21/26 87.2   3.8 1612 50.6   0.9 0316 55.7   0.1 97   1 36   10 2.8 13.5   0.2 1831 SE | 127 0.00 0.00 0.169   0.015 490   23 90   10
Yountville-South (Ranch 87) 8/21/26 89.4   4.1 1636 51.5   0.0 0255 54.0   0.3 100   0 29   10 1.6 11.3   0.7 1405 S | 173 0.00 0.00 0.172   0.009 529   19 40   10
Yountville-SE (Ranch 85) 8/21/26 86.4   4.1 1636 51.7   0.6 0305 54.5   0.2 96   1 31   12 2.8 12.9   1.8 1822 SE | 135 0.00 0.00 - 0   0 90   10
Oak Knoll-East (Ranch 53) 8/21/26 87.4   5.0 1615 51.7   1.4 0242 53.2   0.4 93   0 29   9 2.4 13.5   0.3 1435 SE | 126 0.00 0.00 0.185   0.014 555   23 90   10
Napa-NW (Ranch 54) 8/21/26 90.6   4.9 1738 51.7   1.2 0306 53.4   0.1 92   1 26   7 0.7 11.8   3.9 1626 S | 176 0.00 0.00 - 0   0 90   10
Napa-North (Ranch 29) 8/21/26 87.0   6.4 1635 54.5   0.6 0246 55.0   0.0 100   0 30   12 1.6 13.8   0.9 1537 SW | 224 0.00 0.00 0.122   0.003 348   2 100   0
Max   95.3 - 56.0 - 55.7 100 36 3.2 16.1 - - 0.00 0.00 0.193 584 -
Avg   - - - - 52.5 - - 2.2 - - - - - - - -
Min   85.4 - 48.7 - 48.3 85 10 0.7 10.2 - - 0.00 0.00 0.073 0 -

Southern Napa County

22 Stations

Daily Data | America/Los_Angeles
as of 8/22/26 9:32 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)
Mt. Veeder 8/21/26 85.9   0.3 1601 54.6   0.9 0516 48.1   3.2 88   0 14   5 1.1 7.3   1.2 1345 ESE | 114 0.00 0.00 0.216   0.059 820   309 100   20
Mount George (Napa East) 8/21/26 83.7   2.1 1545 53.3   1.4 0317 55.1   0.4 96   2 34   7 2.0 10.8   0.6 1440 ESE | 120 0.00 0.00 0.176   0.012 550   8 100   0
Napa-East (Palmaz 300') 8/21/26 87.2   1.5 1609 52.4   0.2 0321 53.8   0.1 100   0 30   5 1.6 11.9   0.7 1637 SSE | 158 0.00 0.00 0.153   0.008 450   5 70   10
Napa-East (Palmaz 1200') 7/3/26 79.0   6.0 1616 49.0   3.8 0539 47.1   0.2 100   0 45   38 2.0 12.7   4.5 1533 NW | 313 - - 0.192   0.009 656   3 30   20
Napa-East (Palmaz 1400') 8/21/26 80.7   0.8 1444 52.2   2.8 0318 53.1   0.1 100   0 36   6 3.1 15.7   3.7 1550 SW | 223 0.00 0.03 0.172   0.007 567   12 100   0
Wooden Valley 8/21/26 85.5   0.1 1507 55.9   2.9 0535 51.0   0.3 86   2 28   2 4.4 16.0   0.7 2316 SW | 221 0.00 0.00 0.205   0.013 600   37 60   20
Napa-West Upper (Truchard) 8/21/26 88.4   5.5 1515 51.4   0.4 0415 18.9   6.5 100   0 0   0 2.8 15.7   0.5 1413 SSW | 199 0.00 0.00 0.196   0.017 548   13 90   10
Napa-West Lower (Truchard) 8/21/26 88.1   6.1 1455 46.7   1.1 0406 51.6   0.9 93   1 29   10 - - - - - - - - 90   10
Napa-South (Toyon Farms) 8/21/26 85.8   4.4 1521 54.0   1.0 0423 56.2   0.2 99   0 38   10 3.9 16.0   0.8 1629 SW | 234 0.00 0.00 0.112   0.012 293   5 100   0
Toyon Remote 1 8/21/26 88.9   9.0 1530 49.4   2.3 0402 - - - - - - - - - - - -
Toyon Remote 2 8/21/26 85.3   5.7 1510 51.9   0.2 0146 - - - - - - - - - - - -
Toyon Remote 3 8/21/26 88.7   7.6 1515 49.7   0.8 0429 - - - - - - - - - - - -
Dealy Lane (Ranch 80) 8/21/26 86.4   2.7 1401 52.5   0.6 0436 53.1   0.1 95   0 32   4 2.5 14.2   0.2 1518 WSW | 238 0.00 0.00 0.171   0.004 520   14 100   0
Carneros (Saintsbury) 8/21/26 84.0   6.6 1432 50.9   1.7 0421 53.0   0.1 100   0 34   9 5.9 20.5   1.7 1737 SW | 228 0.00 0.00 - - 100   0
Suscol Lower (Ranch 35) 8/21/26 84.3   5.0 1546 52.5   0.7 0221 53.7   0.2 100   3 33   10 4.8 17.0   2.0 1516 S | 183 0.00 0.00 0.177   0.012 502   9 100   0
Suscol Mtn (Ranch 93) 8/21/26 83.0   2.0 1547 53.1   2.7 0250 54.1   0.0 100   0 36   12 6.5 19.7   3.5 1606 WNW | 292 0.00 0.00 - - 100   0
Suscol Upper (Ranch 92) 8/21/26 80.5   0.9 1601 53.6   2.7 0239 34.8   7.1 100   0 0   0 3.3 18.4   5.2 1620 SW | 223 0.00 0.00 - - 70   20
Stanly (Ranch 45) 8/21/26 84.6   6.5 1536 52.4   1.2 0234 53.5   0.2 92   0 33   8 5.5 19.5   2.8 1936 WSW | 256 0.00 0.00 0.202   0.021 589   5 100   0
Carneros Upper (Ranch 81) 8/21/26 82.5   0.1 1343 55.0   2.0 0228 32.7   1.2 - - 11.2 28.3   1.2 1617 WSW | 246 - - - - 100   0
Carneros (Mitsuko) 8/21/26 85.1   4.0 1411 54.8   1.5 0230 - - - - - - - - - - - 100   0
Carneros Lower (Ranch 81) 8/21/26 89.4   0.3 1407 55.4   1.6 0210 54.5   0.2 93   0 31   1 0.8 12.2   1.6 1721 WNW | 295 0.00 0.00 0.045   0.116 113   413 80   10
Carneros (Milton Rd) 8/21/26 84.8   6.5 1521 54.3   0.5 0055 54.0   0.0 92   1 32   10 - - - - 0.00 0.00 - - 100   0
Max   89.4 - 55.9 - 56.2 100 38 11.2 28.3 - - 0.00 0.03 0.216 820 -
Avg   - - - - 48.9 - - 4.0 - - - - - - - -
Min   80.5 - 46.7 - 18.9 86 0 0.8 7.3 - - 0.00 0.00 0.045 113 -