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Latest Observation

13 Stations

Daily Data | America/Los_Angeles
as of 8/21/26 9:14 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 8/20/26 91.8   0.7 1152 56.4   3.1 0446 - - - - - - - 0.00 0.00 - - 50   10
Pope Valley (Weeks Lake) 8/20/26 94.5   1.8 1500 48.6   2.1 0616 49.1   2.2 98   5 14   4 1.8   0.1 12.9   0.0 1304 SE | 127 0.00 0.00 0.191   0.014 533   29 10   10
Dollarhide Base 8/20/26 97.2   4.3 1555 54.0   2.6 0616 55.2   1.1 94   2 26   3 3.3   0.2 14.5   0.4 1818 S | 180 0.00 0.00 0.228   0.016 594   23 0   0
Dollarhide 1AS Remote 8/20/26 97.4   3.9 1547 50.8   0.8 0558 53.6   0.9 90   2 25   4 3.3   0.3 16.5   0.6 1322 SW | 216 - - - - 0   0
Dollarhide 16A Remote 8/20/26 96.4   2.3 1532 53.7   2.3 0604 55.2   1.3 94   3 26   1 - - - - - - - - 0   0
Dollarhide 18A Remote 8/20/26 93.8   4.2 1435 48.0   2.1 0559 52.9   1.1 95   1 27   5 - - - - - - - - 0   0
Hardin Rd (Eakle) 8/20/26 94.6   3.9 1559 51.6   1.6 0621 - - - - - - - - - - - 0   0
Angwin 8/20/26 85.3   3.5 1537 66.2   4.8 2113 43.2   2.6 57   14 9   10 2.8   0.6 15.0   2.8 1635 SSE | 149 0.00 0.00 0.066   0.012 0   0 100   0
Lower Angwin (Pioneer) 8/20/26 85.7   4.3 1620 46.3   2.9 0503 - - - 2.1   0.2 13.7   2.9 1718 SSW | 211 - - - - 100   20
Las Posadas (Cal Fire) 8/20/26 88.5   3.4 1539 50.1   0.7 0627 53.5   1.6 99   1 34   5 7.8   0.3 18.5   0.4 1813 SW | 224 0.00 0.00 0.204   0.025 530   26 -
Deer Park 8/20/26 90.8   2.4 1529 53.6   0.6 0721 53.4   2.2 97   1 29   2 2.6   0.5 12.4   0.1 1731 ESE | 123 0.00 0.00 0.146   0.009 385   10 0   0
Lower Chiles Valley (Brown) 8/20/26 89.9   3.4 1615 52.9   0.6 0609 52.9   2.3 100   0 24   0 4.3   0.3 14.3   0.9 1537 NW | 305 0.00 0.00 0.192   0.011 560   44 0   0
Moss Creek Vineyard/Reservior 8/20/26 98.7   2.6 1513 53.3   1.5 0634 50.9   2.0 90   2 13   1 - - - - 0.00 0.00 - - 0   0
Max   98.7 - 66.2 - 55.2 100 34 7.8 18.5 - - 0.00 0.00 0.228 594 -
Avg   - - - - 52.0 - - 3.5 - - - - - - - -
Min   85.3 - 46.3 - 43.2 57 9 1.8 12.4 - - 0.00 0.00 0.066 0 -

Northern & Central Napa County

27 Stations

Daily Data | America/Los_Angeles
as of 8/21/26 9:14 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 8/20/26 90.5   8.6 1610 54.2   0.5 0142 55.0   2.0 94   2 32   2 - - - - 0.00 0.00 - - 30   10
Diamond Mtn (Schramsberg) 8/20/26 89.3   3.6 1623 52.5   0.1 0721 52.0   2.7 100   0 18   0 - - - - 0.00 0.00 - - 0   0
Diamond Mtn (McEachran) 8/20/26 89.5   5.8 1618 53.1   1.3 0707 52.1   3.7 96   1 19   1 - - - - - - - - 0   10
St. Helena-North 8/20/26 94.7   1.2 1614 55.2   0.5 0249 52.0   2.6 85   4 21   8 2.1 12.5   0.2 1720 SE | 128 0.00 0.00 0.168   0.015 485   0 0   0
St. Helena (NVV Office) 8/20/26 92.2   0.3 1541 55.8   1.5 0449 - - - 1.5 9.4   0.6 1731 E | 95 0.00 0.00 - - 0   0
Tiara Fria (East St. Helena) 8/20/26 88.0   1.6 1514 53.5   2.4 0312 54.1   2.3 93   1 34   0 2.3 12.6   1.0 1702 ESE | 120 0.00 0.00 - - 10   10
Prisoner Winery 8/20/26 91.4   2.1 1519 49.6   3.4 0357 53.9   2.2 98   1 30   1 1.1 8.9   0.6 1648 SE | 141 0.00 0.00 0.055   0.010 104   32 0   0
Rutherford Hill Estate 8/20/26 89.1   2.4 1516 53.6   1.0 0331 54.3   2.2 100   0 32   2 1.3 12.3   0.4 1635 SSW | 205 0.00 0.00 0.152   0.005 471   16 0   0
Rutherford-North (Mee Ln) 8/20/26 87.6   0.9 1548 48.2   2.8 0347 52.8   2.5 95   1 35   1 2.6 18.0   3.1 1724 SE | 135 0.00 0.00 0.160   0.004 452   12 10   10
Rutherford (STS) 8/20/26 90.4   0.7 1547 48.7   3.3 0201 55.0   2.4 91   0 38   1 1.9 13.0   0.3 1727 SE | 133 0.00 0.00 0.176   0.004 537   9 0   0
Oakville-NE (Ranch 88) 8/20/26 88.4   0.5 1500 48.8   3.4 0323 51.6   2.8 90   1 32   3 2.1 15.6   1.2 1601 S | 180 0.00 0.00 0.165   0.003 470   8 100   0
OV561-East 8/20/26 90.2   0.9 1540 52.9   1.9 0228 - - - - - - - - - - - 40   10
Oakville 8/20/26 84.7   1.0 1555 50.9   2.1 0234 53.2   2.4 93   1 37   3 3.3 19.4   2.3 1723 SE | 146 0.00 0.00 0.183   0.001 540   2 100   0
OV518-West 8/20/26 84.6   0.0 1522 51.5   2.2 0231 - - - - - - - - - - - 100   0
To Kalon Remote (TKKE) 8/20/26 88.5   1.0 1548 51.1   2.1 0234 - - - - - - - - - - - 40   10
To Kalon 8/20/26 85.6   1.3 1524 51.4   1.1 0220 54.2   2.3 95   0 39   2 3.1 18.0   2.6 1721 SE | 126 0.00 0.00 0.175   0.004 506   15 100   20
To Kalon Remote (TKN5) 8/20/26 88.4   0.4 1600 51.6   2.0 0236 - - - - - - - - - - - 40   10
Yountville (Ranch 67) 8/20/26 83.5   0.5 1544 51.7   3.7 0205 52.5   2.4 91   1 37   4 3.7 16.9   1.3 1628 SSE | 148 0.00 0.00 0.180   0.004 571   3 100   0
Stags Leap Dist (Silverado Vineyards) 8/20/26 83.8   1.1 1538 51.4   4.1 0207 52.6   2.4 92   2 36   3 3.0 16.8   0.9 2041 SE | 140 0.00 0.00 0.173   0.002 508   3 100   0
Borreo (Soda Canyon) 8/20/26 83.2   1.6 1505 48.4   3.3 0352 51.7   2.4 97   2 36   0 1.8 12.8   3.5 1616 SSE | 161 0.00 0.00 0.168   0.003 554   5 100   0
Wappo Hill Floor 8/20/26 84.6   0.4 1505 51.7   4.2 0203 54.4   2.0 100   0 40   3 3.0 15.8   2.9 1658 SE | 132 0.00 0.00 0.172   0.002 519   3 100   0
Stags Leap Dist (Chimney Rock) 8/20/26 83.4   1.4 1503 51.5   5.2 0201 55.6   2.1 96   2 46   1 3.0 13.4   0.0 1646 ESE | 122 0.00 0.00 0.154   0.003 467   3 100   0
Yountville-South (Ranch 87) 8/20/26 85.3   0.3 1555 51.5   3.2 0203 54.4   2.0 100   5 39   1 1.7 10.6   0.3 1542 SSE | 167 0.00 0.00 0.163   0.001 510   2 50   10
Yountville-SE (Ranch 85) 8/20/26 82.3   0.6 1556 52.3   4.2 0143 54.7   2.1 95   2 44   2 3.0 14.7   2.7 1637 SE | 137 0.00 0.00 - 0   0 100   0
Oak Knoll-East (Ranch 53) 8/20/26 82.4   0.9 1546 53.1   3.1 0321 53.6   1.9 93   2 38   4 2.7 13.8   1.0 1625 S | 182 0.00 0.00 0.171   0.006 532   9 100   0
Napa-NW (Ranch 54) 8/20/26 85.7   0.3 1529 50.5   2.5 0303 53.3   2.3 93   2 33   7 0.6 7.9   1.1 1559 ESE | 104 0.00 0.00 - 0   0 100   0
Napa-North (Ranch 29) 8/20/26 80.6   0.0 1515 53.9   3.1 0306 55.0   1.9 100   0 42   6 1.8 14.7   1.1 1621 SW | 226 0.00 0.00 0.119   0.004 350   23 100   0
Max   94.7 - 55.8 - 55.6 100 46 3.7 19.4 - - 0.00 0.00 0.183 571 -
Avg   - - - - 53.6 - - 2.3 - - - - - - - -
Min   80.6 - 48.2 - 51.6 85 18 0.6 7.9 - - 0.00 0.00 0.055 0 -

Southern Napa County

22 Stations

Daily Data | America/Los_Angeles
as of 8/21/26 9:14 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 8/20/26 86.2   4.3 1629 53.7   2.7 0659 51.3   1.3 89   5 20   10 1.4 8.5   1.2 1411 ENE | 60 0.00 0.00 0.157   0.019 511   59 80   20
Mount George (Napa East) 8/20/26 81.6   0.8 1544 51.9   1.6 0123 54.7   1.5 94   0 41   1 2.0 10.2   0.2 1606 SW | 227 0.00 0.00 0.164   0.005 541   28 100   0
Napa-East (Palmaz 300') 8/20/26 85.7   1.6 1522 52.7   1.0 0129 53.7   1.7 100   0 35   2 1.0 11.2   2.0 1531 SW | 218 0.00 0.00 0.145   0.008 455   19 80   20
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') 8/20/26 80.0   4.0 1443 49.4   2.2 0529 53.3   1.5 100   0 42   7 3.4 12.0   0.7 1557 WSW | 242 0.00 0.03 0.165   0.014 556   25 100   0
Wooden Valley 8/20/26 85.4   4.0 1524 52.9   0.7 0655 51.3   1.5 89   2 30   5 4.7 16.7   1.5 1747 WNW | 303 0.00 0.00 0.192   0.027 563   50 40   20
Napa-West Upper (Truchard) 8/20/26 82.9   0.3 1454 51.0   1.6 0152 25.3   7.2 100   0 0   0 2.9 16.2   2.7 1552 SE | 139 0.00 0.00 0.179   0.010 535   21 100   0
Napa-West Lower (Truchard) 8/20/26 82.0   0.3 1436 45.6   2.3 0204 52.5   1.6 94   1 39   5 - - - - - - - - 100   0
Napa-South (Toyon Farms) 8/20/26 81.4   1.5 1426 53.0   0.4 0110 56.0   1.6 99   2 49   6 4.0 15.2   1.8 1600 SSE | 164 0.00 0.00 0.100   0.006 288   4 100   0
Toyon Remote 1 8/20/26 79.8   0.6 1510 51.8   0.0 0116 - - - - - - - - - - - -
Toyon Remote 2 8/20/26 79.5   1.0 1452 51.8   0.3 0100 - - - - - - - - - - - -
Toyon Remote 3 8/20/26 81.1   1.1 1721 50.5   0.0 0115 - - - - - - - - - - - -
Dealy Lane (Ranch 80) 8/20/26 83.7   5.1 1502 53.1   1.4 0101 53.2   1.4 95   1 36   13 2.5 14.4   2.6 1920 SW | 228 0.00 0.00 0.167   0.011 534   18 100   0
Carneros (Saintsbury) 8/20/26 77.4   0.7 1439 49.2   2.1 0313 52.9   1.5 100   0 43   8 5.6 18.8   4.9 1857 WSW | 240 0.00 0.00 - - 100   0
Suscol Lower (Ranch 35) 8/20/26 79.4   0.9 1456 51.8   0.1 0101 53.4   1.8 97   5 42   4 4.4 15.0   1.2 1605 SSW | 204 0.00 0.00 0.165   0.016 511   45 100   0
Suscol Mtn (Ranch 93) 8/20/26 81.0   2.2 1455 50.4   3.4 0638 54.1   1.9 100   0 48   3 6.3 16.2   4.3 1210 NW | 308 0.00 0.00 - - 100   0
Suscol Upper (Ranch 92) 8/20/26 79.6   0.9 1524 50.9   3.5 0636 27.8   6.3 100   0 0   0 2.0 13.2   3.0 1701 SW | 224 0.00 0.00 - - 50   10
Stanly (Ranch 45) 8/20/26 78.1   0.9 1744 51.2   0.1 0101 53.4   1.3 92   2 41   9 5.3 16.8   2.6 1615 SSW | 198 0.00 0.00 0.181   0.019 584   52 100   0
Carneros Upper (Ranch 81) 8/20/26 82.6   1.6 1526 53.1   0.5 0207 33.9   6.1 - - 10.4 29.4   13.4 1913 WSW | 254 - - - - 100   0
Carneros (Mitsuko) 8/20/26 81.1   4.2 1359 53.3   0.2 0221 - - - - - - - - - - - 100   0
Carneros Lower (Ranch 81) 8/20/26 89.7   10.0 1443 53.8   0.1 0156 54.2   1.3 93   0 32   17 0.9 13.8   1.6 1536 SSE | 166 0.00 0.00 0.161   0.013 526   48 90   10
Carneros (Milton Rd) 8/20/26 78.3   1.6 1452 53.8   3.5 0242 54.0   1.1 92   2 41   10 - - - - 0.00 0.00 - - 100   20
Max   89.7 - 53.8 - 56.0 100 49 10.4 29.4 - - 0.00 0.03 0.192 584 -
Avg   - - - - 49.1 - - 3.8 - - - - - - - -
Min   77.4 - 45.6 - 25.3 89 0 0.9 8.5 - - 0.00 0.00 0.100 288 -