– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 3 am Fri 13 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Fri 13 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 49mm), heaviest during Fri morning. Mild temperatures (max 6°C on Sun morning, min 3°C on Fri morning). Winds decreasing (gales from the SSW on Fri morning, light winds from the WSW by Fri night).									Days 4–6 Weather Summary Heavy rain (total 58mm), heaviest during Tue night. Later becoming colder with a dusting of snow on Wed morning. Freeze-thaw conditions (max 5°C on Tue night, min 0°C on Wed night). Winds increasing (light winds from the NW on Mon night, gales from the SW by Tue night).
	Friday 13			Saturday 14			Sunday 15			Monday 16			Tuesday 17			Wednesday 18
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	some clouds	some clouds	light rain	light rain	light rain	heavy rain	rain shwrs	clear	clear	clear	some clouds	some clouds	heavy rain	light snow	snow shwrs	some clouds
Cloud base (m)	350	500	750	7000	1550	600	450	350	4250		1700			1600	450	350	550	5550
km/h	SSW	W	W	SSW	S	SSW	SSW	SSW	WNW	WNW	WNW	NNW	WNW	W	SSW	W	NW	NW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	1	—
mm	27	0.1	—	—	0.2	0.5	5	15	1.6	—	—	—	—	—	52	7	—	—
max °C	5	4	3	5	5	5	6	6	5	3	4	3	3	3	5	3	2	2
min °C	3	3	3	4	5	4	6	6	3	3	3	2	3	3	3	2	1	0
chill °C	-4	-3	-2	1	2	-1	1	1	-2	-2	0	-1	0	0	-3	-2	-4	-6

Freezing level m	2250	1950	1900	2950	3350	3200	2800	2500	2000	1800	1850	1800	1800	1850	2100	1950	1550	1600

	6:50	—	—	6:50	—	—	6:52	—	—	6:52	—	—	6:54	—	—	6:56	—	—
	—	4:58	—	—	4:57	—	—	4:57	—	—	4:55	—	—	4:54	—	—	4:54	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Heavy rain (total 49mm), heaviest during Fri morning. Mild temperatures (max 6°C on Sun morning, min 3°C on Fri morning). Winds decreasing (gales from the SSW on Fri morning, light winds from the WSW by Fri night).

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 58mm), heaviest during Tue night. Later becoming colder with a dusting of snow on Wed morning. Freeze-thaw conditions (max 5°C on Tue night, min 0°C on Wed night). Winds increasing (light winds from the NW on Mon night, gales from the SW by Tue 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. 2 hours ago	14°C	Light rain .	Light winds from the SSE (17 kph at 150).	16 km Low: few Mid: broken High: overcast
Cloverdale 34 km W 106m alt. 2 hours ago	14°C	Dry	Calm (2 kph at 320).
Graton 35 km SSW 87m alt. 1 hour ago	14°C	Dry	Calm (3 kph at 35).
Alten wx 36 km S 69m alt. 2 hours ago	14°C	Dry	Calm (0 kph at 154).
Sebastopol 36 km SSW 129m alt. 47 minutes ago	13°C	Dry	Calm (5 kph at 202).
Camp Meeker wx 37 km SSW 61m alt. 2 hours ago	13°C	Dry	Wind obs. (6 kph from 113 degs) was rejected.
Camp Meeker wx 37 km SSW 61m alt. 48 minutes ago	13°C	Dry	Light winds from the SW (6 kph at 215).
Knowles Corner wx 37 km S 88m alt. 47 minutes ago	14°C	Dry	Calm (0 kph at —).
Monte Rio wx 40 km SSW 76m alt. 48 minutes ago	14°C	Dry	Calm (2 kph at 338).
Cotati 41 km S 94m alt. 3 hours ago	14°C	Dry	Calm (0 kph at 302).

* 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.