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Latest Observation

13 Stations

Daily Data | America/Los_Angeles
as of 8/18/26 4:41 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 8/17/26 87.0   0.1 1642 54.9   4.0 0348 - - - - - - - 0.00 0.00 - - 80   20
Pope Valley (Weeks Lake) 8/17/26 91.8   0.3 1723 52.4   6.9 0059 50.9   1.4 87   13 18   4 1.6   0.1 13.2   2.8 1358 SW | 228 0.00 0.00 0.171   0.025 474   91 40   10
Dollarhide Base 8/17/26 94.8   0.1 1424 59.3   7.6 0651 54.4   0.2 85   14 22   4 2.8   0.1 12.4   1.8 1505 SSW | 194 0.00 0.00 0.195   0.032 505   104 10   10
Dollarhide 1AS Remote 8/17/26 95.7   0.9 1651 57.0   9.9 0059 53.8   0.9 86   7 20   3 2.7   0.5 14.0   1.1 1453 S | 187 - - - - 10   10
Dollarhide 16A Remote 8/17/26 94.3   0.4 1508 59.2   8.0 0559 54.8   0.2 86   12 22   0 - - - - - - - - 10   10
Dollarhide 18A Remote 8/17/26 93.4   1.4 1706 54.0   8.3 0101 53.4   0.9 88   8 22   0 - - - - - - - - 10   10
Hardin Rd (Eakle) 8/17/26 93.6   0.3 1444 57.9   8.6 0054 - - - - - - - - - - - 10   10
Angwin 8/17/26 83.7   0.1 1612 66.9   7.0 0710 43.8   4.8 56   13 14   7 2.4   1.3 10.9   1.8 1645 SSE | 167 0.00 0.00 0.052   0.009 0   0 100   10
Lower Angwin (Pioneer) 8/17/26 84.2   1.0 1624 47.6   5.5 0059 - - - 1.5   0.4 11.0   1.2 1358 WSW | 252 - - - - 100   20
Las Posadas (Cal Fire) 8/17/26 87.5   0.3 1631 54.6   6.3 0649 53.2   0.2 97   3 28   4 7.3   1.0 23.4   5.8 2100 WSW | 258 0.00 0.00 0.199   0.025 480   80 -
Deer Park 8/17/26 90.0   0.7 1531 55.0   0.8 0647 54.7   0.2 94   4 32   5 2.6   0.4 12.0   2.3 1731 SSE | 160 0.00 0.00 0.143   0.014 372   28 0   10
Lower Chiles Valley (Brown) 8/17/26 89.1   1.3 1633 56.6   4.1 0611 53.9   0.6 95   5 22   10 3.9   0.2 14.4   0.3 1520 WNW | 296 0.00 0.00 0.174   0.023 489   106 0   10
Moss Creek Vineyard/Reservior 8/17/26 95.0   1.2 1617 59.9   8.1 0552 52.4   0.5 82   16 14   1 - - - - 0.00 0.00 - - 0   0
Max   95.7 - 66.9 - 54.8 97 32 7.3 23.4 - - 0.00 0.00 0.199 505 -
Avg   - - - - 52.5 - - 3.1 - - - - - - - -
Min   83.7 - 47.6 - 43.8 56 14 1.5 10.9 - - 0.00 0.00 0.052 0 -

Northern & Central Napa County

27 Stations

Daily Data | America/Los_Angeles
as of 8/18/26 4:41 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 8/17/26 93.3   1.8 1622 54.9   3.5 0632 55.0   0.7 94   2 28   0 - - - - 0.00 0.00 - - 60   10
Diamond Mtn (Schramsberg) 8/17/26 89.1   0.4 1653 53.8   1.7 0610 52.5   0.9 93   7 29   2 - - - - 0.00 0.00 - - 0   10
Diamond Mtn (McEachran) 8/17/26 91.3   0.2 1634 54.7   1.2 0633 52.9   1.4 91   6 29   2 - - - - - - - - 30   10
St. Helena-North 8/17/26 90.7   0.4 1526 56.2   3.0 0648 53.1   0.7 84   5 26   0 2.4 13.2   1.1 1618 ESE | 117 0.00 0.00 0.173   0.012 470   31 10   10
St. Helena (NVV Office) 8/17/26 90.4   0.8 1528 57.3   1.6 0643 - - - 1.5 10.0   0.2 1635 SE | 124 0.00 0.00 - - 10   10
Tiara Fria (East St. Helena) 8/17/26 87.1   1.2 1524 57.2   4.1 0427 55.8   0.1 90   1 36   2 2.1 10.6   1.0 1730 SE | 126 0.00 0.00 - - 40   10
Prisoner Winery 8/17/26 90.7   1.1 1543 53.7   2.1 0048 55.8   0.3 95   2 33   0 1.1 9.4   1.6 1755 SSE | 157 0.00 0.00 0.022   0.144 1   481 10   10
Rutherford Hill Estate 8/17/26 89.0   1.1 1527 54.9   0.4 0059 56.0   0.1 93   7 34   2 1.4 11.8   0.0 1735 S | 177 0.00 0.00 0.149   0.007 454   32 20   10
Rutherford-North (Mee Ln) 8/17/26 86.5   0.6 1536 53.6   4.2 0058 55.2   0.2 91   3 37   0 2.7 15.3   0.2 1808 SE | 126 0.00 0.00 0.160   0.004 443   15 40   10
Rutherford (STS) 8/17/26 89.0   0.7 1526 53.1   2.9 0059 57.6   0.2 92   0 41   0 1.8 11.5   0.1 1848 SE | 124 0.00 0.00 0.172   0.006 520   22 0   0
Oakville-NE (Ranch 88) 8/17/26 87.9   0.0 1455 54.6   4.0 0058 54.4   0.1 87   5 34   1 2.1 13.5   1.0 1809 SSW | 194 0.00 0.00 0.162   0.002 460   7 100   0
OV561-East 8/17/26 88.9   0.3 1548 56.1   1.6 0059 - - - - - - - - - - - 70   10
Oakville 8/17/26 83.5   0.8 1441 55.6   3.8 0059 55.5   0.0 90   3 39   2 3.4 16.8   0.6 1723 SE | 130 0.00 0.00 0.177   0.002 520   6 100   0
OV518-West 8/17/26 83.4   0.4 1432 56.3   3.9 0059 - - - - - - - - - - - 100   0
To Kalon Remote (TKKE) 8/17/26 87.9   0.3 1453 55.8   4.7 0101 - - - - - - - - - - - 70   10
To Kalon 8/17/26 85.2   0.8 1438 55.2   3.6 0059 56.2   0.2 92   2 40   0 3.1 15.1   2.1 1842 SE | 131 0.00 0.00 0.172   0.000 492   3 100   20
To Kalon Remote (TKN5) 8/17/26 87.1   1.2 1537 56.2   4.4 0411 - - - - - - - - - - - 70   10
Yountville (Ranch 67) 8/17/26 82.0   1.4 1544 55.5   3.0 0058 54.5   0.2 90   2 41   2 3.6 15.9   1.4 1727 SSE | 160 0.00 0.00 0.178   0.002 558   13 100   0
Stags Leap Dist (Silverado Vineyards) 8/17/26 82.8   1.3 1705 55.4   2.9 0101 54.6   0.1 89   3 40   1 3.0 15.0   0.4 1751 SE | 144 0.00 0.00 0.171   0.002 501   6 100   0
Borreo (Soda Canyon) 8/17/26 82.5   0.1 1629 52.1   1.8 0101 53.7   0.1 92   5 40   6 1.7 8.9   0.3 1119 ESE | 123 0.00 0.00 0.166   0.008 542   29 90   20
Wappo Hill Floor 8/17/26 83.7   1.0 1701 55.1   2.5 0101 55.7   0.7 97   3 43   1 2.9 12.0   0.6 1730 SE | 125 0.00 0.00 0.169   0.003 502   29 100   0
Stags Leap Dist (Chimney Rock) 8/17/26 82.0   0.9 1616 54.8   1.9 0101 57.4   0.2 93   2 50   1 2.7 11.8   0.7 1444 S | 169 0.00 0.00 0.151   0.001 462   14 100   0
Yountville-South (Ranch 87) 8/17/26 85.2   0.4 1648 54.6   2.9 0059 56.1   0.7 93   7 41   1 1.7 10.4   0.9 1522 SSE | 147 0.00 0.00 0.156   0.002 478   20 80   10
Yountville-SE (Ranch 85) 8/17/26 81.1   1.0 1655 55.6   2.2 0049 56.5   0.2 93   2 46   0 2.8 12.7   0.7 1532 SE | 139 0.00 0.00 - 0   0 100   0
Oak Knoll-East (Ranch 53) 8/17/26 82.4   0.1 1636 56.0   3.3 0054 55.1   0.4 90   4 42   0 2.4 12.5   0.4 1543 ESE | 123 0.00 0.00 0.169   0.004 528   10 100   0
Napa-NW (Ranch 54) 8/17/26 85.0   0.2 1553 54.1   3.5 0058 55.2   0.5 89   10 40   1 0.5 6.8   0.7 1613 ESE | 118 0.00 0.00 - 0   0 100   0
Napa-North (Ranch 29) 8/17/26 81.4   1.1 1659 56.0   1.0 0624 55.7   1.3 91   9 46   2 1.8 11.3   0.4 1314 SSW | 193 0.00 0.00 0.121   0.002 361   1 100   0
Max   93.3 - 57.3 - 57.6 97 50 3.6 16.8 - - 0.00 0.00 0.178 558 -
Avg   - - - - 55.2 - - 2.2 - - - - - - - -
Min   81.1 - 52.1 - 52.5 84 26 0.5 6.8 - - 0.00 0.00 0.022 0 -

Southern Napa County

22 Stations

Daily Data | America/Los_Angeles
as of 8/18/26 4:41 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 8/17/26 84.7   2.3 1552 57.4   2.4 0626 52.2   1.5 85   8 35   5 1.5 9.7   2.1 1504 SE | 132 0.00 0.00 0.159   0.024 523   69 80   20
Mount George (Napa East) 8/17/26 80.4   1.4 1631 55.0   0.5 0101 54.8   0.5 95   0 44   5 1.6 10.1   0.2 1647 WSW | 258 0.00 0.00 0.160   0.000 531   7 100   10
Napa-East (Palmaz 300') 8/17/26 85.7   0.3 1555 54.1   1.2 0059 55.0   0.5 92   1 37   4 1.0 10.4   1.2 1754 WSW | 245 0.00 0.00 0.152   0.001 467   12 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') 8/17/26 80.7   0.7 1616 54.2   5.8 0533 54.4   0.3 100   0 43   14 2.9 11.5   0.2 1035 SW | 232 0.00 0.03 0.162   0.014 533   51 100   10
Wooden Valley 8/17/26 86.0   0.5 1632 58.9   8.3 0512 52.2   0.3 79   15 28   1 3.6 16.6   1.6 0840 WSW | 238 0.00 0.00 0.163   0.041 475   121 40   10
Napa-West Upper (Truchard) 8/17/26 81.7   0.2 1607 52.7   0.4 0051 45.3   33.3 100   0 0   0 2.6 13.2   0.5 1446 SSE | 160 0.00 0.00 0.172   0.001 529   2 100   0
Napa-West Lower (Truchard) 8/17/26 81.0   0.4 1621 49.3   1.7 0059 53.9   1.3 92   1 45   0 - - - - - - - - 100   0
Napa-South (Toyon Farms) 8/17/26 79.0   0.1 1551 54.7   0.2 0023 57.0   0.9 97   3 56   1 3.3 12.8   0.5 1451 S | 170 0.00 0.00 0.094   0.003 289   10 100   0
Toyon Remote 1 8/17/26 80.1   0.9 1549 52.0   2.8 0024 - - - - - - - - - - - -
Toyon Remote 2 8/17/26 78.6   1.1 1548 54.3   1.1 0042 - - - - - - - - - - - -
Toyon Remote 3 8/17/26 80.0   0.6 1450 52.3   2.9 0055 - - - - - - - - - - - -
Dealy Lane (Ranch 80) 8/17/26 79.5   0.4 1547 54.1   0.1 0408 54.5   0.6 92   3 48   2 2.5 13.2   1.8 1453 SE | 133 0.00 0.00 0.158   0.001 521   1 100   0
Carneros (Saintsbury) 8/17/26 77.3   0.4 1545 51.4   2.2 0653 54.2   0.1 98   2 52   2 4.6 14.6   1.1 1441 SE | 145 0.00 0.00 - - 100   10
Suscol Lower (Ranch 35) 8/17/26 78.2   1.0 1555 52.6   2.3 2353 54.4   1.3 92   8 47   3 4.0 14.0   0.9 1739 SSW | 198 0.00 0.00 0.155   0.005 482   8 100   20
Suscol Mtn (Ranch 93) 8/17/26 82.9   1.1 1632 52.6   0.1 0546 54.9   1.0 99   1 43   5 3.6 15.4   3.0 1326 W | 281 0.00 0.00 - - 100   0
Suscol Upper (Ranch 92) 8/17/26 79.8   0.6 1549 53.1   0.2 0557 17.9   15.1 100   0 0   0 2.1 12.4   1.9 1255 SSW | 200 0.00 0.00 - - 50   10
Stanly (Ranch 45) 8/17/26 76.8   0.3 1716 53.0   0.2 0059 54.6   0.6 90   2 51   1 4.7 15.5   2.5 1448 S | 188 0.00 0.00 0.169   0.007 551   14 100   0
Carneros Upper (Ranch 81) 8/17/26 80.7   0.3 1606 54.0   0.6 0409 44.3   26.0 - - 7.4 17.5   0.5 2026 W | 266 - - - - 100   10
Carneros (Mitsuko) 8/17/26 77.5   0.3 1547 55.1   0.5 0622 - - - - - - - - - - - 100   0
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 12.3   0.1 1356 S | 173 0.00 0.00 0.149   0.005 490   16 100   0
Carneros (Milton Rd) 8/17/26 77.5   0.1 1558 54.6   0.9 2340 55.0   0.8 91   1 50   0 - - - - 0.00 0.00 - - 100   0
Max   86.0 - 58.9 - 57.0 100 56 7.4 17.5 - - 0.00 0.03 0.172 551 -
Avg   - - - - 51.2 - - 3.2 - - - - - - - -
Min   76.8 - 49.3 - 17.9 79 0 1.0 9.7 - - 0.00 0.00 0.094 289 -