– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 10 pm Sat 31 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Sat 31 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Tue morning. Mild temperatures (max 9°C on Sun night, min 3°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the SW by Tue morning).										Days 5–7 Weather Summary Mostly dry. Very mild (max 17°C on Fri afternoon, min 6°C on Tue night). Winds decreasing (strong winds from the NNE on Wed night, calm by Thu night).
		Sunday 1			Monday 2			Tuesday 3			Wednesday 4			Thursday 5
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	some clouds	some clouds	some clouds	some clouds	light rain	light rain	rain shwrs	clear	some clouds	some clouds	clear	clear	clear
Cloud base (m)	1750			7150	6150	5450	6250	700	400	2150	6350	5950	7050			8800
km/h	S	N	WNW	NE	SSE	S	SSW	SW	SW	N	NNW	NNE	NNE	NNW	NNW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	—	—	—	—	—	—	0.8	0.6	0.1	—	—	—	—	—	—
max °C	5	4	8	9	9	9	9	6	6	7	8	10	12	13	14	16
min °C	3	4	7	8	9	9	7	5	6	6	7	9	11	12	14	15
chill °C	0	0	5	7	8	7	2	0	2	5	4	7	8	9	13	14

Freezing level m	1900	2100	2850	4000	4200	4000	3500	2400	2950	3750	3800	3850	3700	3800	3950	4000

	—	6:37	—	—	7:37	—	—	7:39	—	—	7:39	—	—	7:41	—	—
	—	—	5:09	—	—	6:08	—	—	6:07	—	—	6:07	—	—	6:06	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Some drizzle, heaviest during Tue morning. Mild temperatures (max 9°C on Sun night, min 3°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the SW by Tue morning).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Fri afternoon, min 6°C on Tue night). Winds decreasing (strong winds from the NNE on Wed night, calm by Thu 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	11°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Cloverdale 34 km W 106m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 26).
Graton 35 km SSW 87m alt. 36 minutes ago	9°C	Dry	Calm (0 kph at 32).
Alten wx 36 km S 69m alt. 1 hour ago	10°C	Dry	Calm (0 kph at 165).
Sebastopol 36 km SSW 129m alt. 55 minutes ago	9°C	Dry	Calm (0 kph at 246).
Camp Meeker wx 37 km SSW 61m alt. 54 minutes ago	9°C	Dry	Calm (0 kph at 90).
Camp Meeker wx 37 km SSW 61m alt. 41 minutes ago	8°C	Dry	Calm (0 kph at 310).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	10°C	Light rain.	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 3 hours ago	9°C	Dry	Calm (0 kph at 2).
Monte Rio wx 40 km SSW 76m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 334).

* 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.