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Latest Observation

13 Stations

Daily Data | America/Los_Angeles
as of 8/19/26 7:28 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 8/18/26 91.3   4.3 1227 55.0   0.1 0151 - - - - - - - 0.00 0.00 - - 70   10
Pope Valley (Weeks Lake) 8/18/26 95.6   3.8 1520 47.8   4.5 0425 49.2   1.8 93   6 17   1 1.6   0.1 12.5   0.7 1425 SE | 131 0.00 0.00 0.201   0.030 560   86 30   10
Dollarhide Base 8/18/26 98.7   3.9 1440 53.5   5.8 0642 54.4   0.0 92   6 23   1 3.2   0.3 17.2   4.8 1750 SW | 225 0.00 0.00 0.238   0.043 611   106 0   10
Dollarhide 1AS Remote 8/18/26 100.8   5.1 1619 49.0   8.0 0343 52.1   1.7 88   1 22   1 2.5   0.2 16.1   2.1 1759 SW | 221 - - - - 0   10
Dollarhide 16A Remote 8/18/26 96.4   2.1 1502 53.2   6.0 0627 54.7   0.1 93   7 26   4 - - - - - - - - 0   10
Dollarhide 18A Remote 8/18/26 95.8   2.4 1546 47.2   6.8 0350 52.2   1.2 94   5 22   0 - - - - - - - - 0   10
Hardin Rd (Eakle) 8/18/26 96.6   3.0 1534 51.2   6.7 0622 - - - - - - - - - - - 0   10
Angwin 8/18/26 87.0   3.3 1610 66.5   0.4 0332 44.4   0.5 38   17 21   7 3.5   1.1 11.4   0.5 1406 SSE | 166 0.00 0.00 0.077   0.025 0   0 100   0
Lower Angwin (Pioneer) 8/18/26 88.0   3.8 1710 45.2   2.5 0339 - - - 1.7   0.2 12.2   1.2 1737 WSW | 243 - - - - 90   10
Las Posadas (Cal Fire) 8/18/26 91.1   3.6 1556 49.5   5.0 0623 53.3   0.0 98   2 24   4 7.6   0.3 19.4   4.0 1939 SW | 226 0.00 0.00 0.233   0.034 548   68 -
Deer Park 8/18/26 93.5   3.5 1625 52.5   2.5 0425 54.5   0.2 96   2 29   3 2.7   0.1 11.2   0.8 1437 SSE | 166 0.00 0.00 0.155   0.012 400   28 0   0
Lower Chiles Valley (Brown) 8/18/26 92.8   3.7 1656 52.5   4.1 0610 54.4   0.5 100   5 23   1 4.1   0.1 13.5   0.9 1055 SSW | 209 0.00 0.00 0.198   0.024 570   81 0   0
Moss Creek Vineyard/Reservior 8/18/26 98.6   3.6 1509 51.9   7.9 0639 51.9   0.5 93   11 19   5 - - - - 0.00 0.00 - - 0   0
Max   100.8 - 66.5 - 54.7 100 29 7.6 19.4 - - 0.00 0.00 0.238 611 -
Avg   - - - - 52.1 - - 3.4 - - - - - - - -
Min   87.0 - 45.2 - 44.4 38 17 1.6 11.2 - - 0.00 0.00 0.077 0 -

Northern & Central Napa County

27 Stations

Daily Data | America/Los_Angeles
as of 8/19/26 7:28 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 8/18/26 97.7   4.4 1620 53.0   1.9 0317 55.8   0.8 95   2 28   0 - - - - 0.00 0.00 - - 50   10
Diamond Mtn (Schramsberg) 8/18/26 93.4   4.3 1653 51.6   2.2 0621 52.2   0.3 100   7 24   5 - - - - 0.00 0.00 - - 0   0
Diamond Mtn (McEachran) 8/18/26 94.2   2.9 1611 52.3   2.4 0509 53.2   0.4 96   5 23   6 - - - - - - - - 20   10
St. Helena-North 8/18/26 92.9   2.2 1629 52.1   4.1 0425 52.9   0.2 85   1 28   2 3.0 12.1   1.1 1419 SSE | 150 0.00 0.00 0.189   0.016 509   39 0   10
St. Helena (NVV Office) 8/18/26 92.7   2.3 1647 52.8   4.5 0403 - - - 1.6 8.2   1.8 1817 E | 89 0.00 0.00 - - 0   10
Tiara Fria (East St. Helena) 8/18/26 89.5   2.4 1618 50.6   6.6 0348 55.3   0.5 93   3 34   2 2.2 10.4   0.2 2034 E | 88 0.00 0.00 - - 30   10
Prisoner Winery 8/18/26 93.1   2.4 1636 49.8   3.9 0333 55.3   0.4 98   2 31   1 1.2 6.8   2.6 1608 E | 79 0.00 0.00 0.025   0.003 8   7 0   10
Rutherford Hill Estate 8/18/26 90.5   1.5 1622 53.2   1.7 0243 55.7   0.2 100   7 33   1 1.4 11.2   0.7 1940 SE | 142 0.00 0.00 0.158   0.009 489   35 10   10
Rutherford-North (Mee Ln) 8/18/26 88.8   2.3 1656 46.9   6.7 0333 54.5   0.8 94   3 36   1 2.8 12.1   3.3 1631 SE | 130 0.00 0.00 0.166   0.006 472   29 30   10
Rutherford (STS) 8/18/26 90.8   1.8 1619 47.9   5.2 0333 56.6   1.0 92   0 39   2 2.0 11.7   0.2 1415 E | 90 0.00 0.00 0.182   0.010 552   33 0   0
Oakville-NE (Ranch 88) 8/18/26 89.0   1.1 1630 48.6   5.9 0321 53.8   0.7 90   2 34   0 2.2 13.7   0.2 1909 S | 172 0.00 0.00 0.168   0.006 481   21 100   0
OV561-East 8/18/26 91.9   3.0 1706 52.9   3.2 0325 - - - - - - - - - - - 60   10
Oakville 8/18/26 85.7   2.2 1557 49.8   5.8 0307 55.1   0.5 93   4 40   1 3.5 15.6   1.2 1851 SE | 144 0.00 0.00 0.184   0.007 543   23 100   0
OV518-West 8/18/26 85.0   1.6 1646 51.0   5.2 0252 - - - - - - - - - - - 100   0
To Kalon Remote (TKKE) 8/18/26 90.1   2.2 1611 49.3   6.5 0326 - - - - - - - - - - - 60   10
To Kalon 8/18/26 87.8   2.6 1645 49.7   5.4 0322 55.9   0.3 96   4 39   1 3.1 13.6   1.5 1925 SE | 132 0.00 0.00 0.175   0.003 506   14 90   10
To Kalon Remote (TKN5) 8/18/26 91.3   4.2 1635 50.6   5.7 0322 - - - - - - - - - - - 60   10
Yountville (Ranch 67) 8/18/26 84.2   2.2 1622 51.4   4.1 0250 54.3   0.2 92   3 39   3 4.2 14.9   0.9 1739 S | 185 0.00 0.00 0.188   0.010 588   30 100   0
Stags Leap Dist (Silverado Vineyards) 8/18/26 85.3   2.5 1655 52.1   3.3 0234 54.4   0.1 92   3 38   2 3.1 15.3   0.2 1658 SSE | 159 0.00 0.00 0.180   0.009 527   26 100   0
Borreo (Soda Canyon) 8/18/26 85.1   2.6 1542 48.4   3.7 0309 53.2   0.5 96   4 36   4 1.7 9.3   0.4 1632 SSE | 166 0.00 0.00 0.180   0.014 589   47 100   10
Wappo Hill Floor 8/18/26 85.8   2.1 1625 51.6   3.5 0241 56.0   0.3 100   3 40   2 2.9 11.4   0.6 1627 ESE | 115 0.00 0.00 0.179   0.010 552   49 100   0
Stags Leap Dist (Chimney Rock) 8/18/26 84.6   2.6 1633 51.0   3.7 0239 57.2   0.2 97   3 48   3 2.8 10.9   0.9 1500 S | 179 0.00 0.00 0.159   0.008 497   34 100   0
Yountville-South (Ranch 87) 8/18/26 87.6   2.4 1636 51.5   3.2 0249 56.0   0.1 100   7 39   2 1.9 10.6   0.1 1329 S | 179 0.00 0.00 0.170   0.014 540   62 70   10
Yountville-SE (Ranch 85) 8/18/26 84.0   2.9 1617 54.2   1.4 0237 56.4   0.1 95   1 45   2 2.8 11.9   0.8 1657 SE | 144 0.00 0.00 - 0   0 100   0
Oak Knoll-East (Ranch 53) 8/18/26 84.7   2.3 1629 53.8   2.1 0231 55.2   0.1 93   3 40   2 2.5 13.6   1.1 1648 SE | 143 0.00 0.00 0.177   0.008 566   38 90   10
Napa-NW (Ranch 54) 8/18/26 86.9   1.9 1556 51.9   2.2 0249 55.4   0.2 92   3 38   2 0.6 7.4   0.6 1727 SE | 128 0.00 0.00 - 0   0 90   10
Napa-North (Ranch 29) 8/18/26 81.9   0.5 1601 55.2   0.8 0133 56.5   0.8 100   9 46   1 2.0 11.8   0.5 1644 SSW | 203 0.00 0.00 0.119   0.002 358   3 100   0
Max   97.7 - 55.2 - 57.2 100 48 4.2 15.6 - - 0.00 0.00 0.189 589 -
Avg   - - - - 55.0 - - 2.4 - - - - - - - -
Min   81.9 - 46.9 - 52.2 85 23 0.6 6.8 - - 0.00 0.00 0.025 0 -

Southern Napa County

22 Stations

Daily Data | America/Los_Angeles
as of 8/19/26 7:28 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 8/18/26 86.9   2.2 1703 52.6   4.8 0608 52.1   0.1 91   6 34   1 1.5 9.3   0.4 1613 S | 170 0.00 0.00 0.178   0.019 582   59 70   10
Mount George (Napa East) 8/18/26 83.4   3.0 1543 52.7   2.2 0141 54.3   0.5 94   1 38   6 1.7 8.6   1.5 1612 WSW | 254 0.00 0.00 0.165   0.005 546   15 100   0
Napa-East (Palmaz 300') 8/18/26 89.1   3.4 1526 52.8   1.3 0128 54.9   0.1 100   8 33   5 0.8 9.4   1.0 1309 SW | 221 0.00 0.00 0.148   0.004 457   10 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') 8/18/26 84.6   3.9 1555 49.8   4.4 0314 53.7   0.7 100   0 32   11 2.5 10.7   0.8 1210 WSW | 250 0.00 0.03 0.174   0.012 573   40 100   0
Wooden Valley 8/18/26 89.0   3.0 1555 53.8   5.1 0642 51.7   0.5 90   10 25   4 3.8 17.2   0.6 0404 SW | 224 0.00 0.00 0.207   0.044 588   113 30   10
Napa-West Upper (Truchard) 8/18/26 83.9   2.2 1522 50.7   2.0 0242 19.0   26.3 100   0 0   0 2.6 15.8   2.6 1710 SSE | 160 0.00 0.00 0.181   0.009 555   26 100   0
Napa-West Lower (Truchard) 8/18/26 82.3   1.3 1523 45.0   4.2 0309 53.8   0.0 93   0 43   2 - - - - - - - - 100   0
Napa-South (Toyon Farms) 8/18/26 81.7   2.7 1537 53.8   1.0 0206 57.5   0.5 99   2 52   3 3.3 12.5   0.3 1153 S | 171 0.00 0.00 0.097   0.003 300   12 100   0
Toyon Remote 1 8/18/26 80.2   0.1 1535 48.6   3.4 0234 - - - - - - - - - - - -
Toyon Remote 2 8/18/26 80.6   2.0 1523 52.9   1.3 0122 - - - - - - - - - - - -
Toyon Remote 3 8/18/26 81.6   1.5 1523 50.2   2.1 0226 - - - - - - - - - - - -
Dealy Lane (Ranch 80) 8/18/26 80.2   0.7 1731 51.9   2.2 0059 55.0   0.5 94   2 45   3 2.6 14.9   1.7 1320 SE | 143 0.00 0.00 0.165   0.007 546   25 100   0
Carneros (Saintsbury) 8/18/26 77.1   0.2 1548 50.9   0.5 0148 54.4   0.2 100   2 52   0 4.2 13.7   0.9 1914 S | 174 0.00 0.00 - - 90   10
Suscol Lower (Ranch 35) 8/18/26 79.7   1.5 1601 52.8   0.1 0113 54.9   0.5 100   8 46   1 4.4 14.9   0.9 1231 S | 184 0.00 0.00 0.158   0.003 505   22 100   0
Suscol Mtn (Ranch 93) 8/18/26 83.5   0.6 1519 51.9   0.7 0704 55.3   0.4 100   1 40   3 4.4 12.0   3.4 1447 WNW | 294 0.00 0.00 - - 100   0
Suscol Upper (Ranch 92) 8/18/26 83.0   3.2 1602 52.6   0.5 0701 33.0   15.1 100   0 0   0 2.7 11.0   1.3 1254 SW | 216 0.00 0.00 - - 40   10
Stanly (Ranch 45) 8/18/26 77.1   0.3 1711 52.3   0.7 0115 54.8   0.2 92   2 50   2 5.1 12.7   2.8 1854 SSW | 193 0.00 0.00 0.174   0.005 576   26 90   10
Carneros Upper (Ranch 81) 8/18/26 81.0   0.3 1540 54.3   0.2 0634 26.9   17.4 - - 5.8 16.1   1.5 0143 WSW | 242 - - - - 100   0
Carneros (Mitsuko) 8/18/26 78.0   0.6 1708 50.6   4.5 0042 - - - - - - - - - - - 100   0
Carneros Lower (Ranch 81) 8/18/26 79.9   0.1 1608 54.9   0.1 0056 55.7   0.3 93   0 49   1 2.0 12.1   0.2 1324 SSE | 161 0.00 0.00 0.159   0.010 522   33 100   0
Carneros (Milton Rd) 8/18/26 77.4   0.1 1605 54.4   0.1 2339 55.3   0.3 92   2 50   0 - - - - 0.00 0.00 - - 90   10
Max   89.1 - 54.9 - 57.5 100 52 5.8 17.2 - - 0.00 0.03 0.207 588 -
Avg   - - - - 49.5 - - 3.2 - - - - - - - -
Min   77.1 - 45.0 - 19.0 90 0 0.8 8.6 - - 0.00 0.00 0.097 300 -