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St. Helena (NVV Office)

Current Conditions

10/8/26 1:15 AM (-07:00)
Updated Every 15 Minutes
Temp 58.0 °F   1.6
Wind Spd 0.0 mph   0.0
Wind Dir NNW | 338 °
Wind Gust 0.3 mph   0.3
Wind Gst Dir NNW | 346 °
Latest Rain 0.00 In
Daily Rain 0.00 In
Daily Max Temp 58.5 °F   1.7
Daily Min Temp 57.6 °F   1.6
Daily Max Wind 0.3 mph   0.3
Max Wind Dir NNW | 346 °

St. Helena (NVV Office)

Current Conditions

10/8/26 1:15 AM (-07:00)
Updated Every 15 Minutes
Daily Rain 0.00 In
Month Precip 0.00 In
Season Precip 0.04 In
Yest MaxT 102.7 °F
Yest MinT 51.3 °F
Yest MaxGst 8.3 mph
Yest Precip 0.00 In

Last 7 Days

St. Helena (NVV Office)

Daily Data | America/Los_Angeles
as of 10/8/26 1:25 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)
10/7/26 102.7 51.3 1.0 ENE | 65 8.3 1354 0.00 0.04 23.0 0.0 0 12.6
10/6/26 104.5 54.4 0.8 SSW | 192 7.6 1504 0.00 0.04 25.9 0.0 0 12.6
10/5/26 102.0 57.2 0.8 SE | 125 10.7 1429 0.00 0.04 26.0 0.0 0 12.6
10/4/26 99.6 56.7 0.4 NE | 41 5.7 1601 0.00 0.04 25.0 0.0 0 12.6
10/3/26 104.0 53.9 0.9 ENE | 68 7.1 1606 0.00 0.04 26.5 0.0 0 12.6
10/2/26 97.0 51.8 0.8 E | 94 7.4 1642 0.00 0.04 21.6 0.0 10 12.6
10/1/26 95.1 48.9 1.2 ESE | 115 8.7 1532 0.00 0.04 19.8 0.0 20 12.6
Max 104.5 57.2 1.2 - 10.7 - 0.00 0.04 26.5 0.0 - 12.6
Avg - - 0.8 - - - - - 24.0 0.0 - -
Min 95.1 48.9 0.4 - 5.7 - 0.00 0.04 19.8 0.0 - 12.6
Total - - - - - - - - 167.8 0.0 - -

Climate Summary

St. Helena (NVV Office)

Current Year | Showing 1/1/26 - 10/7/26
as of 10/8/26 1:25 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 2026 31 65.3 38.6 81.6 31.5 8.9 17.5 4.49 0 2 0 0 5 2 0
Feb 2026 28 66.9 42 83.4 28.8 9.9 18.8 5.23 0 3 0 0 6 2 0
Mar 2026 31 83.1 46.9 95.3 40.2 10.9 19.9 0.35 0 0 8 0 1 0 0
Apr 2026 30 73.4 45.7 87.3 39.4 11.1 18 4.09 0 0 0 0 5 2 0
May 2026 31 81.7 51.4 96.1 46 11.6 23.5 1.18 0 0 4 0 3 0 0
Jun 2026 30 90 54.9 109.1 48.6 11.4 16.3 0 0 0 11 3 0 0 0
Jul 2026 31 92.1 55.5 105.9 49.9 10.3 12.3 0 0 0 20 4 0 0 0
Aug 2026 31 91.7 55.4 105 48.7 10.1 13.2 0 0 0 20 3 0 0 0
Sep 2026 30 87.5 51.7 105.4 44.8 10.2 15.2 0.04 0 0 10 4 0 0 0
Oct 2026 7 100.7 53.5 104.5 48.9 7.9 10.7 0 0 0 7 4 0 0 0
Total 280 - - - - - - 15.38 0 5 80 18 20 6 0
Average 28 81.9 49.3 81.9 49.3 10.4 - 1.54 0 0.5 8 1.8 2 0.6 0
Maximum 31 100.7 55.5 109.1 - - 23.5 5.23 0 3 20 4 6 2 0
Minimum 7 65.3 38.6 - 28.8 - - 0 0 0 0 0 0 0 0