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Latest Observation

13 Stations

Daily Data | America/Los_Angeles
as of 8/1/26 4:31 PM 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 7/31/26 93.6   1.9 1528 54.1   1.0 0541 - - - - - - - 0.00 0.00 - - 0   0
Pope Valley (Weeks Lake) 7/31/26 99.7   3.2 1503 45.4   0.4 0620 48.6   1.0 100   3 13   1 1.6   0.1 11.8   1.5 1717 WSW | 240 0.00 0.00 0.223   0.002 610   9 0   0
Dollarhide Base 7/31/26 102.5   3.9 1523 54.0   0.2 0538 54.6   1.0 92   1 18   4 2.6   0.5 16.3   1.5 1713 SW | 217 0.00 0.00 0.265   0.002 690   4 0   0
Dollarhide 1AS Remote 7/31/26 104.2   3.9 1548 46.8   0.1 0622 51.9   0.8 89   0 16   5 2.4   0.4 15.6   1.6 1759 SW | 229 - - - - 0   0
Dollarhide 16A Remote 7/31/26 104.5   7.2 1437 53.0   1.2 0615 54.4   1.2 94   2 16   8 - - - - - - - - 0   0
Dollarhide 18A Remote 7/31/26 100.5   4.5 1450 44.6   0.4 0617 51.4   0.8 95   1 16   7 - - - - - - - - 0   0
Hardin Rd (Eakle) 7/31/26 101.6   4.6 1531 49.2   1.0 0608 - - - - - - - - - - - 0   0
Angwin 7/31/26 90.3   2.4 1438 67.2   2.2 0445 44.0   3.9 38   0 15   1 3.9   1.3 14.1   1.1 1801 SSE | 167 0.00 0.00 0.090   0.024 0   0 100   0
Lower Angwin (Pioneer) 7/31/26 91.9   3.1 1611 45.5   1.6 0525 - - - 2.0   0.3 10.3   1.6 1512 WNW | 301 - - - - 60   10
Las Posadas (Cal Fire) 7/31/26 95.1   4.3 1540 52.0   0.4 0438 52.8   1.5 92   4 18   7 7.0   0.9 19.5   0.8 1855 SW | 222 0.00 0.00 0.270   0.007 612   6 -
Deer Park 7/31/26 97.0   3.1 1553 53.8   1.0 0610 54.1   0.7 96   2 22   2 3.2   0.2 13.6   0.0 1654 SSE | 148 0.00 0.00 0.195   0.003 459   6 0   10
Lower Chiles Valley (Brown) 7/31/26 96.8   2.6 1548 47.5   2.9 0635 52.2   2.5 96   0 14   0 4.1   0.1 16.4   0.9 1500 NW | 310 0.00 0.00 0.244   0.005 669   5 0   0
Moss Creek Vineyard/Reservior 7/31/26 102.1   3.3 1605 51.2   2.7 0614 50.9   1.9 93   4 14   1 - - - - 0.00 0.00 - - 0   0
Max   104.5 - 67.2 - 54.6 100 22 7.0 19.5 - - 0.00 0.00 0.270 690 -
Avg   - - - - 51.5 - - 3.3 - - - - - - - -
Min   90.3 - 44.6 - 44.0 38 13 1.6 10.3 - - 0.00 0.00 0.090 0 -

Northern & Central Napa County

27 Stations

Daily Data | America/Los_Angeles
as of 8/1/26 4:31 PM 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 7/31/26 100.4   1.1 1417 49.8   0.7 0627 55.0   1.5 96   2 23   4 - - - - 0.00 0.00 - - 0   0
Diamond Mtn (Schramsberg) 7/31/26 96.9   2.7 1554 54.6   1.0 0615 53.2   2.2 93   4 18   8 - - - - 0.00 0.00 - - 0   10
Diamond Mtn (McEachran) 7/31/26 98.1   2.5 1705 53.5   1.2 0610 53.4   1.8 92   1 18   8 - - - - - - - - 0   10
St. Helena-North 7/31/26 98.4   3.7 1622 51.5   0.9 0607 52.0   0.6 87   1 20   3 3.2 13.8   3.1 1708 SSE | 157 0.00 0.00 0.229   0.006 577   17 0   0
St. Helena (NVV Office) 7/31/26 97.5   3.8 1553 52.2   0.9 0621 - - - 1.6 10.7   0.8 1718 SE | 138 0.00 0.00 - - 0   0
Tiara Fria (East St. Helena) 7/31/26 94.1   4.3 1600 49.9   0.8 0620 54.2   0.6 90   2 28   2 2.2 13.0   0.1 1645 SSE | 147 0.00 0.00 - - 0   0
Prisoner Winery 7/31/26 97.2   4.3 1540 48.8   0.9 0613 54.4   0.5 98   1 25   3 1.3 8.8   1.9 1656 SE | 138 0.00 0.00 0.134   0.045 376   134 0   0
Rutherford Hill Estate 7/31/26 97.4   6.2 1600 54.0   0.1 0609 55.3   0.7 100   0 25   2 1.5 13.8   2.2 1624 SSW | 208 0.00 0.00 0.191   0.002 561   13 0   0
Rutherford-North (Mee Ln) 7/31/26 93.3   3.7 1544 46.2   0.2 0621 53.4   0.6 92   3 28   3 3.0 16.4   2.0 1700 SE | 139 0.00 0.00 0.213   0.000 561   12 0   0
Rutherford (STS) 7/31/26 95.8   4.0 1431 47.2   0.1 0558 56.3   0.9 92   0 32   4 2.1 14.3   1.0 1843 SE | 127 0.00 0.00 0.229   0.002 664   18 0   0
Oakville-NE (Ranch 88) 7/31/26 94.4   4.6 1540 46.1   0.8 0619 51.5   0.6 86   2 25   2 2.4 15.1   2.5 1618 SSW | 194 0.00 0.00 0.221   0.002 609   12 100   0
OV561-East 7/31/26 95.7   4.9 1540 48.7   0.7 0606 - - - - - - - - - - - 0   0
Oakville 7/31/26 90.3   4.2 1529 47.3   0.8 0610 53.2   0.5 92   1 30   2 3.5 17.6   1.6 1824 SE | 133 0.00 0.00 0.238   0.003 661   10 80   10
OV518-West 7/31/26 90.0   3.1 1526 48.4   0.0 0635 - - - - - - - - - - - 80   10
To Kalon Remote (TKKE) 7/31/26 95.0   4.8 1544 48.2   2.1 0606 - - - - - - - - - - - 0   0
To Kalon 7/31/26 91.8   4.5 1535 49.0   0.9 0612 54.9   0.5 95   0 31   2 3.4 15.7   2.9 1833 SE | 141 0.00 0.00 0.232   0.001 631   13 40   10
To Kalon Remote (TKN5) 7/31/26 95.4   5.3 1520 48.2   1.5 0606 - - - - - - - - - - - 0   0
Yountville (Ranch 67) 7/31/26 89.2   4.9 1534 46.9   1.5 0626 52.7   0.5 91   0 30   3 3.8 16.7   0.8 1657 SSE | 168 0.00 0.00 0.236   0.005 697   10 90   10
Stags Leap Dist (Silverado Vineyards) 7/31/26 89.8   4.0 1516 47.2   2.0 0603 52.8   0.2 94   0 28   4 3.3 18.5   0.9 1741 SE | 145 0.00 0.00 0.235   0.009 648   2 100   0
Borreo (Soda Canyon) 7/31/26 89.2   4.7 1556 47.9   0.8 0626 52.0   0.4 97   0 27   5 1.8 9.3   1.4 1633 S | 185 0.00 0.00 0.224   0.003 692   9 100   0
Wappo Hill Floor 7/31/26 91.3   5.4 1517 46.4   1.4 0623 54.1   0.2 100   0 31   4 2.7 14.7   0.4 1433 SE | 128 0.00 0.00 0.229   0.004 668   7 60   10
Stags Leap Dist (Chimney Rock) 7/31/26 89.3   4.2 1519 47.0   1.2 0535 55.8   0.6 97   1 36   5 2.8 12.8   0.9 1529 SE | 137 0.00 0.00 0.204   0.005 596   0 90   10
Yountville-South (Ranch 87) 7/31/26 92.2   5.0 1516 48.1   1.5 0603 54.3   0.0 100   0 29   3 1.7 9.8   1.2 1528 S | 182 0.00 0.00 0.213   0.002 648   8 0   0
Yountville-SE (Ranch 85) 7/31/26 89.1   4.5 1513 48.2   1.1 0546 55.0   0.3 96   0 33   4 2.7 12.9   2.7 1758 SSE | 160 0.00 0.00 - 0   0 90   10
Oak Knoll-East (Ranch 53) 7/31/26 89.3   4.1 1509 48.9   0.9 0557 53.3   0.1 91   1 29   4 2.3 15.1   1.8 1715 SE | 124 0.00 0.00 0.226   0.006 683   4 60   10
Napa-NW (Ranch 54) 7/31/26 92.2   2.9 1612 50.8   0.5 0411 54.0   0.3 92   1 27   2 0.6 6.4   1.6 1539 ESE | 116 0.00 0.00 - 0   0 0   10
Napa-North (Ranch 29) 7/31/26 87.0   3.7 1609 49.9   0.5 0617 55.0   0.1 100   0 32   5 1.8 13.7   1.0 1618 SSE | 168 0.00 0.00 0.142   0.002 383   10 90   10
Max   100.4 - 54.6 - 56.3 100 36 3.8 18.5 - - 0.00 0.00 0.238 697 -
Avg   - - - - 53.9 - - 2.4 - - - - - - - -
Min   87.0 - 46.1 - 51.5 86 18 0.6 6.4 - - 0.00 0.00 0.134 0 -

Southern Napa County

22 Stations

Daily Data | America/Los_Angeles
as of 8/1/26 4:31 PM 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 7/31/26 90.5   0.1 1542 57.3   1.7 0501 51.5   1.9 79   2 27   8 1.6 11.7   1.1 1445 SSE | 166 0.00 0.00 0.239   0.003 765   51 0   10
Mount George (Napa East) 7/31/26 87.1   3.3 1509 52.3   0.3 0653 55.5   1.6 100   2 30   4 1.6 10.2   0.4 1640 W | 261 0.00 0.00 0.209   0.005 652   2 90   10
Napa-East (Palmaz 300') 7/31/26 92.4   3.3 1455 52.1   0.7 0704 54.1   0.6 100   0 27   0 1.4 10.1   0.9 1508 WSW | 251 0.00 0.00 0.191   0.001 539   9 40   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') 7/31/26 87.9   5.1 1533 50.9   2.2 0555 54.0   1.1 100   0 30   4 2.8 13.4   0.1 1626 SW | 218 0.00 0.00 0.217   0.009 658   7 90   10
Wooden Valley 7/31/26 92.8   4.9 1534 57.2   1.0 0558 51.8   1.5 79   2 21   3 3.1 12.8   2.9 1416 WSW | 250 0.00 0.00 0.242   0.005 674   11 60   10
Napa-West Upper (Truchard) 7/31/26 88.4   4.5 1500 52.9   0.6 0618 29.2   6.8 100   0 0   0 3.0 15.0   0.1 1723 SSE | 168 0.00 0.00 0.230   0.007 665   11 70   10
Napa-West Lower (Truchard) 7/31/26 87.6   4.5 1453 44.5   1.3 0558 52.2   0.1 95   1 30   7 - - - - - - - - 90   10
Napa-South (Toyon Farms) 7/31/26 85.1   3.6 1524 53.3   0.2 0629 57.3   0.3 100   0 36   10 3.3 14.2   1.7 1632 S | 188 0.00 0.00 0.125   0.004 323   7 100   0
Toyon Remote 1 7/31/26 85.0   3.4 1539 49.7   1.6 0358 - - - - - - - - - - - -
Toyon Remote 2 7/31/26 84.9   4.0 1536 47.4   0.3 0623 - - - - - - - - - - - -
Toyon Remote 3 7/31/26 86.4   4.2 1548 48.5   1.1 0613 - - - - - - - - - - - -
Dealy Lane (Ranch 80) 7/31/26 87.0   2.9 1540 51.2   1.5 0644 54.0   0.4 95   0 30   3 2.6 13.2   2.0 1624 SSE | 166 0.00 0.00 0.212   0.004 653   0 90   10
Carneros (Saintsbury) 7/31/26 84.1   4.1 1540 48.5   0.7 0629 53.8   0.4 100   0 34   6 4.4 14.6   2.5 1611 S | 173 0.00 0.00 - - 100   0
Suscol Lower (Ranch 35) 7/31/26 86.0   3.8 1509 52.9   0.3 0543 53.9   0.4 100   0 28   5 4.1 14.8   1.0 1623 SSW | 204 0.00 0.00 0.213   0.005 616   23 100   0
Suscol Mtn (Ranch 93) 7/31/26 89.2   4.1 1531 54.5   1.0 0555 54.4   0.6 97   0 28   4 3.8 13.2   3.6 1628 WNW | 290 0.00 0.00 - - 90   10
Suscol Upper (Ranch 92) 7/31/26 86.4   3.9 1527 54.8   1.0 0602 26.9   14.7 100   0 0   0 1.9 11.2   4.7 2203 S | 185 0.00 0.00 - - 90   10
Stanly (Ranch 45) 7/31/26 83.4   2.9 1515 50.2   1.5 0513 54.3   0.4 94   1 33   7 5.0 16.1   3.1 1628 SW | 215 0.00 0.00 0.231   0.006 693   14 100   0
Carneros Upper (Ranch 81) 7/31/26 86.7   3.1 1455 55.1   0.1 0538 54.3   1.0 - - 4.0 15.9   2.9 1820 S | 191 - - - - 90   10
Carneros (Mitsuko) 7/31/26 83.7   2.4 1657 45.8   0.1 0557 - - - - - - - - - - - 100   0
Carneros Lower (Ranch 81) 7/31/26 86.5   4.2 1436 50.1   0.2 0634 52.5   0.1 100   0 0   0 2.1 12.1   1.0 1629 SSE | 155 0.00 0.00 0.209   0.004 646   6 100   0
Carneros (Milton Rd) 7/31/26 83.5   4.4 1551 48.8   0.2 0632 54.2   1.1 93   0 35   6 - - - - 0.00 0.00 - - 100   0
Max   92.8 - 57.3 - 57.3 100 36 5.0 16.1 - - 0.00 0.00 0.242 765 -
Avg   - - - - 50.8 - - 3.0 - - - - - - - -
Min   83.4 - 44.5 - 26.9 79 0 1.4 10.1 - - 0.00 0.00 0.125 323 -