Monthly Historical AveragesSaint Helena, CA
Average Temperature
High
21°
Feels 21
Low
7°
Feels 6
Average Precipitation
5 Days
32.6mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 12, 2026
Day
15°Feels 14
Wind
18 km/h S
Gust
27 km/h
Humidity
59%
P.O.P
90%
Rain
5-10 mm
Night
4°Feels 4
Wind
12 km/h W
Gust
18 km/h
Humidity
97%
P.O.P
20%
Historical AveragesApr 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity