St. Helena, CA Weather History | Weather Underground

Summary

Temperature (°F)	Actual	Historic Avg.	Record
High Temp	64	61	78
Low Temp	31	41	25
Day Average Temp	46.63	-	-

Precipitation (in)	Actual	Historic Avg.	Record
Precipitation	0.03	5.4	-

Dew Point (°F)	Actual	Historic Avg.	Record
Dew Point	35.21	-	-
High	45	-	-
Low	29	-	-
Average	35.21	-	-

Wind (mph)	Actual	Historic Avg.	Record
Max Wind Speed	8	-	-
Visibility	10	-	-

Sea Level Pressure (in)	Actual	Historic Avg.	Record
Sea Level Pressure	29.95	-	-

Astronomy	Day Length	Rise	Set
Actual Time	9h 44m	7:05 AM	4:50 PM
Civil Twilight		6:36 AM	5:19 PM
Nautical Twilight		6:03 AM	5:51 PM
Astronomical Twilight		5:31 AM	6:23 PM
Moon: Waning gibbous		5:47 PM	8:43 AM

Time	Temperature	Dew Point	Humidity	Wind	Wind Speed	Wind Gust	Pressure	Precip.	Condition
12:53 AM	36 °F	33 °F	89 %	CALM	0 mph	-	29.99 in	0 in	Fair
1:53 AM	33 °F	30 °F	89 %	CALM	0 mph	-	30 in	0 in	Fair
2:53 AM	32 °F	29 °F	88 %	CALM	0 mph	-	30.01 in	0 in	Fair
3:53 AM	31 °F	29 °F	92 %	N	3 mph	-	30 in	0 in	Fair
4:53 AM	33 °F	30 °F	89 %	CALM	0 mph	-	29.99 in	0 in	Fair
5:53 AM	31 °F	29 °F	92 %	NNW	5 mph	-	30 in	0 in	Fair
6:53 AM	33 °F	29 °F	85 %	CALM	0 mph	-	30 in	0 in	Fair
7:53 AM	34 °F	31 °F	89 %	CALM	0 mph	-	30 in	0 in	Partly Cloudy
8:53 AM	40 °F	35 °F	83 %	CALM	0 mph	-	30.01 in	0 in	Fair
9:53 AM	46 °F	36 °F	68 %	CALM	0 mph	-	30.01 in	0 in	Partly Cloudy
10:53 AM	52 °F	34 °F	50 %	CALM	0 mph	-	30 in	0 in	Partly Cloudy
11:53 AM	57 °F	36 °F	45 %	S	5 mph	-	29.97 in	0 in	Partly Cloudy
12:53 PM	60 °F	37 °F	42 %	SSW	5 mph	-	29.95 in	0 in	Fair
1:53 PM	64 °F	35 °F	34 %	S	7 mph	-	29.92 in	0 in	Fair
2:53 PM	64 °F	36 °F	35 %	SSE	8 mph	-	29.9 in	0 in	Partly Cloudy
3:53 PM	62 °F	36 °F	38 %	SSE	8 mph	-	29.9 in	0 in	Mostly Cloudy
4:53 PM	59 °F	36 °F	42 %	SSE	6 mph	-	29.89 in	0 in	Mostly Cloudy
5:53 PM	55 °F	36 °F	49 %	S	3 mph	-	29.9 in	0 in	Mostly Cloudy
6:53 PM	54 °F	36 °F	51 %	CALM	0 mph	-	29.89 in	0 in	Partly Cloudy
7:53 PM	50 °F	37 °F	61 %	SW	3 mph	-	29.9 in	0 in	Cloudy
8:53 PM	48 °F	42 °F	80 %	WNW	3 mph	-	29.9 in	0.01 in	Light Rain
9:53 PM	49 °F	43 °F	80 %	S	6 mph	-	29.89 in	0 in	Cloudy
10:53 PM	48 °F	45 °F	89 %	W	3 mph	-	29.9 in	0.02 in	Cloudy
11:53 PM	48 °F	45 °F	89 %	N	6 mph	-	29.89 in	0 in	Cloudy