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St. Helena (NVV Office)

Current Conditions

5/10/26 11:45 PM (-07:00)
Updated Every 15 Minutes
Temp 58.0 °F   0.4
Wind Spd 0.8 mph   0.4
Wind Dir SE | 124 °
Wind Gust 2.4 mph   0.3
Wind Gst Dir SE | 129 °
Latest Rain 0.00 In
Daily Rain 0.00 In
Daily Max Temp 83.1 °F   5.6
Daily Min Temp 53.1 °F   3.4
Daily Max Wind 9.1 mph   0.5
Max Wind Dir E | 82 °

St. Helena (NVV Office)

Current Conditions

5/10/26 11:45 PM (-07:00)
Updated Every 15 Minutes
Daily Rain 0.00 In
Month Precip 0.52 In
Season Precip 28.47 In
Yest MaxT 88.7 °F
Yest MinT 49.7 °F
Yest MaxGst 9.6 mph
Yest Precip 0.00 In

Last 7 Days

St. Helena (NVV Office)

Daily Data | America/Los_Angeles
as of 5/10/26 11:59 PM 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)
5/9/26 88.7 49.7 1.4 ESE | 112 9.6 1456 0.00 28.47 16.6 0.0 90 12.6
5/8/26 82.5 53.1 1.6 E | 95 10.1 1611 0.00 28.47 14.2 0.0 100 12.6
5/7/26 83.1 53.2 1.5 ENE | 75 9.2 1616 0.00 28.47 13.4 0.0 100 12.6
5/6/26 80.1 54.3 1.4 ENE | 72 11.9 1704 0.00 28.47 14.9 0.0 80 12.6
5/5/26 70.8 52.9 1.2 NW | 310 9.4 1724 0.02 28.47 9.3 0.0 60 12.6
5/4/26 70.1 46.0 0.8 N | 356 8.6 1613 0.50 28.45 5.8 0.0 70 12.6
5/3/26 69.5 52.5 1.7 W | 268 12.1 1722 0.00 27.95 8.6 0.0 80 12.6
Max 88.7 54.3 1.7 - 12.1 - 0.50 28.47 16.6 0.0 - 12.6
Avg - - 1.4 - - - - - 11.8 0.0 - -
Min 69.5 46.0 0.8 - 8.6 - 0.00 27.95 5.8 0.0 - 12.6
Total - - - - - - - - 82.9 0.0 - -

Climate Summary

St. Helena (NVV Office)

Current Year | Showing 1/1/26 - 5/9/26
as of 5/10/26 11:59 PM 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 9 77.3 51.4 88.7 46 10.2 12.1 0.52 0 0 0 0 1 0 0
Total 129 - - - - - - 14.68 0 5 8 0 18 6 0
Average 25.8 72.6 43.9 72.6 43.9 10.2 - 2.94 0 1 1.6 0 3.6 1.2 0
Maximum 31 83.1 51.4 95.3 - - 19.9 5.23 0 3 8 0 6 2 0
Minimum 9 65.3 38.6 - 28.8 - - 0.35 0 0 0 0 1 0 0