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St. Helena (NVV Office)

Current Conditions

10/19/25 1:45 AM (-07:00)
Updated Every 15 Minutes
Temp 53.6 °F   1.9
Wind Spd 1.7 mph   1.3
Wind Dir ENE | 58 °
Wind Gust 3.1 mph   1.7
Wind Gst Dir NE | 46 °
Latest Rain 0.00 In
Daily Rain 0.00 In
Daily Max Temp 55.8 °F   3.1
Daily Min Temp 52.5 °F   1.0
Daily Max Wind 3.1 mph   1.4
Max Wind Dir NE | 46 °

St. Helena (NVV Office)

Current Conditions

10/19/25 1:45 AM (-07:00)
Updated Every 15 Minutes
Daily Rain 0.00 In
Month Precip 1.31 In
Season Precip 1.56 In
Yest MaxT 84.2 °F
Yest MinT 46.6 °F
Yest MaxGst 6.4 mph
Yest Precip 0.00 In

Last 7 Days

St. Helena (NVV Office)

Daily Data | America/Los_Angeles
as of 10/19/25 1:46 AM PDT
Load Interactive
Date Daily Max Temp (°F) Daily Min Temp (°F) Wind Spd (mph) Wind Dir (°) Daily Max Wind (mph) Time of Max Wind Daily Rain (In) Season Precip (In) GDDs (DL) Chilling <=45F (hrs) Powdery Mildew Stress (pts) MinBV Day (V)
10/18/25 84.2 46.6 0.6 SE | 138 6.4 1440 0.00 1.56 13.3 0.0 50 12.6
10/17/25 81.5 44.0 1.0 E | 87 7.3 1703 0.00 1.56 10.8 0.9 30 12.6
10/16/25 77.2 45.1 0.6 E | 91 6.6 1226 0.00 1.56 8.4 0.0 10 12.6
10/15/25 64.3 50.9 0.6 ESE | 114 5.2 1334 0.03 1.56 7.1 0.0 20 12.6
10/14/25 56.2 51.0 0.4 NNE | 21 4.8 2229 0.48 1.53 3.3 0.0 30 12.6
10/13/25 66.5 48.4 1.1 WNW | 284 9.0 1505 0.61 1.05 4.2 0.0 40 12.6
10/12/25 78.8 43.6 1.5 WNW | 298 9.4 1327 0.00 0.44 11.2 0.4 50 12.6
Max 84.2 51.0 1.5 - 9.4 - 0.61 1.56 13.3 0.9 - 12.6
Avg - - 0.8 - - - - - 8.3 0.2 - -
Min 56.2 43.6 0.4 - 4.8 - 0.00 0.44 3.3 0.0 - 12.6
Total - - - - - - - - 58.3 1.2 - -

Climate Summary

St. Helena (NVV Office)

Current Year | Showing 1/1/25 - 10/18/25
as of 10/19/25 1:46 AM PDT
Temperature (°F) Max Wind Gust (mph) Precip (in) Days
Month Days Avg High Avg Low Max Min Avg Max Total Daily Min Temp < 28 Daily Min Temp < 32 Daily Max Temp > 90 Daily Max Temp > 100 Daily Rain > 0.25 Daily Rain > 1 Daily Max Wind > 25
Jan 2025 31 63.3 36.2 80.2 28.3 11.5 23.9 0.99 0 8 0 0 2 0 0
Feb 2025 28 63.7 39.8 81.1 27.6 11.1 23.9 11.18 1 4 0 0 7 5 0
Mar 2025 31 65.6 41.8 88 33.1 13 19.9 4.18 0 0 0 0 6 1 0
Apr 2025 30 74.1 45.5 86.5 36.1 10.9 21.6 0.65 0 0 0 0 1 0 0
May 2025 31 84.5 50 105 45.1 11.9 17.5 0.11 0 0 7 1 0 0 0
Jun 2025 30 88.1 52 97.2 45.6 10.7 13.5 0 0 0 10 0 0 0 0
Jul 2025 31 88.4 54.8 100.2 46.8 10.7 13.6 0 0 0 11 1 0 0 0
Aug 2025 31 94.5 55.4 106.4 48.4 10.2 13.6 0 0 0 24 5 0 0 0
Sep 2025 30 87.7 56.6 105.5 49.9 10.4 16.7 0.25 0 0 9 3 0 0 0
Oct 2025 18 76.2 49.9 95.1 43.6 8.4 12 1.31 0 0 2 0 2 0 0
Total 291 - - - - - - 18.67 1 12 63 10 18 6 0
Average 29.1 78.8 48.2 78.8 48.2 11 - 1.87 0.1 1.2 6.3 1 1.8 0.6 0
Maximum 31 94.5 56.6 106.4 - - 23.9 11.18 1 8 24 5 7 5 0
Minimum 18 63.3 36.2 - 27.6 - - 0 0 0 0 0 0 0 0