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St. Helena (NVV Office)

Current Conditions

4/27/26 12:15 AM (-07:00)
Updated Every 15 Minutes
Temp 48.7 °F   4.2
Wind Spd 0.0 mph   1.0
Wind Dir NNW | 347 °
Wind Gust 1.1 mph   2.1
Wind Gst Dir N | 353 °
Latest Rain 0.00 In
Daily Rain 0.00 In
Daily Max Temp 65.2 °F   5.8
Daily Min Temp 48.3 °F   1.2
Daily Max Wind 11.8 mph   2.4
Max Wind Dir SSW | 213 °

St. Helena (NVV Office)

Current Conditions

4/27/26 12:15 AM (-07:00)
Updated Every 15 Minutes
Daily Rain 0.00 In
Month Precip 4.09 In
Season Precip 27.95 In
Yest MaxT 59.4 °F
Yest MinT 47.0 °F
Yest MaxGst 9.4 mph
Yest Precip 0.00 In

Last 7 Days

St. Helena (NVV Office)

Daily Data | America/Los_Angeles
as of 4/27/26 12:25 AM PDT
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)
4/25/26 59.4 47.0 1.3 WNW | 296 9.4 2116 0.00 27.95 4.1 0.0 60 12.6
4/24/26 73.0 44.0 1.5 N | 352 12.5 1736 0.00 27.95 7.5 1.4 70 12.6
4/23/26 75.6 45.0 1.1 WNW | 290 9.3 1631 0.00 27.95 10.3 0.0 80 12.6
4/22/26 67.7 48.0 1.1 E | 92 7.7 1901 0.35 27.95 5.6 0.0 60 12.6
4/21/26 64.7 47.4 1.2 WSW | 254 12.9 1458 0.21 27.60 5.1 0.0 70 12.6
4/20/26 61.4 45.9 0.9 ENE | 58 8.3 1403 1.01 27.39 3.5 0.0 80 12.6
Max 75.6 48.0 1.5 - 12.9 - 1.01 27.95 10.3 1.4 - 12.6
Avg - - 1.2 - - - - - 6.0 0.2 - -
Min 59.4 44.0 0.9 - 7.7 - 0.00 27.39 3.5 0.0 - 12.6
Total - - - - - - - - 36.1 1.5 - -

Climate Summary

St. Helena (NVV Office)

Current Year | Showing 1/1/26 - 4/25/26
as of 4/27/26 12:25 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 25 72.8 45.7 87.3 39.4 11.2 18 4.09 0 0 0 0 5 2 0
Total 115 - - - - - - 14.16 0 5 8 0 17 6 0
Average 28.8 72.1 43.2 72.1 43.2 10.2 - 3.54 0 1.2 2 0 4.2 1.5 0
Maximum 31 83.1 46.9 95.3 - - 19.9 5.23 0 3 8 0 6 2 0
Minimum 25 65.3 38.6 - 28.8 - - 0.35 0 0 0 0 1 0 0