– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 9 pm Fri 20 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Fri 20 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 9°C on Mon morning, min -1°C on Fri night). Winds decreasing (strong winds from the S on Sat afternoon, light winds from the SSW by Mon morning).										Days 5–7 Weather Summary Heavy rain (total 39mm), heaviest during Tue afternoon. Very mild (max 14°C on Thu afternoon, min 7°C on Mon night). Winds decreasing (gales from the SSW on Tue morning, calm by Wed night).
		Saturday 21			Sunday 22			Monday 23			Tuesday 24			Wednesday 25			Thursday 26
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	light rain	cloudy	some clouds	cloudy	cloudy	mod. rain	heavy rain	heavy rain	rain shwrs	clear	clear	some clouds	clear	some clouds	some clouds
km/h	S	S	S	S	SSW	SSW	S	SSW	S	SSW	SW	SW	SW	W	NW	WNW	NNW	N	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	—	—	—	—	10	14	14	2	—	—	—	—	—	—
max °C	-1	1	2	4	6	6	6	9	9	9	7	9	9	9	9	10	12	14	14
min °C	-1	0	1	2	5	6	6	8	9	7	7	8	8	9	9	9	12	13	14
chill °C	-6	-7	-6	-5	-1	1	2	6	6	2	1	2	4	6	8	9	11	12	14

Freezing level m	1000	1350	1450	2000	2200	2750	3350	3250	3150	3200	3200	3300	3100	3200	3300	3450	3600	3650	3700
Cloud base (m)	2450	1700	800	600	750	700	800	5600	3100	950	350	350	400	500	8350	6350	6350	6400	6250

	—	6:52	—	—	6:52	—	—	6:50	—	—	6:48	—	—	6:48	—	—	6:46	—	—
	—	—	5:54	—	—	5:55	—	—	5:57	—	—	5:58	—	—	5:59	—	—	6:00	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Mostly dry. Freeze-thaw conditions (max 9°C on Mon morning, min -1°C on Fri night). Winds decreasing (strong winds from the S on Sat afternoon, light winds from the SSW by Mon morning).

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 39mm), heaviest during Tue afternoon. Very mild (max 14°C on Thu afternoon, min 7°C on Mon night). Winds decreasing (gales from the SSW on Tue morning, calm by Wed night).

This table gives the weather forecast for Mount Saint Helena at the specific elevation of 1323 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Saint Helena. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of California.

Live conditions reported by 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Santa Rosa Airport 25 km SSW 219m alt. 3 hours ago	2° C	Clear	Light winds from the W (7 kph at 270).	16 km
Santa Rosa 30 km S 40m alt. 1 hour ago	2° C	-	Calm (0 kph at 97).
Cloverdale 34 km W 106m alt. 1 hour ago	2° C	-	Calm (0 kph at 73).
Graton 35 km SSW 87m alt. 41 minutes ago	1° C	-	Calm (0 kph at 35).
Alten wx 36 km S 69m alt. 1 hour ago	2° C	-	Calm (2 kph at 145).
Sebastopol 36 km SSW 129m alt. 1 hour ago	1° C	-	Calm (0 kph at 265).
Camp Meeker wx 37 km SSW 61m alt. 52 minutes ago	2° C	-	Calm (0 kph at 248).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 267).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	1° C	-	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 39 minutes ago	1° C	-	Calm (0 kph at 13).

* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.