– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 4 pm Sat 10 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 10 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 13°C on Sat afternoon, min 7°C on Mon morning). Winds increasing (calm on Sat night, fresh winds from the NNE by Sun night).											Days 5–7 Weather Summary Mostly dry. Warm (max 21°C on Thu afternoon, min 13°C on Tue afternoon). Wind will be generally light.
	Sat 10		Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	clear
Cloud base (m)				3200				8700		8950		8950
km/h	W	NE	NNE	E	NNE	NE	NNE	NNW	NE	NNW	NNE	N	NW	NNE	NNE	N	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	13	13	9	11	11	8	11	10	11	14	14	15	17	17	19	21	20
min °C	12	10	9	11	9	7	10	9	10	13	13	14	16	17	17	20	19
chill °C	11	7	5	11	5	4	8	7	9	13	12	13	16	17	16	20	19

Freezing level m	3700	3550	3050	2650	2600	2700	3100	3300	3700	3950	3900	4050	4200	4150	4300	4600	4650

	—	—	7:15	—	—	7:16	—	—	7:16	—	—	7:18	—	—	7:18	—	—
	6:39	—	—	6:37	—	—	6:37	—	—	6:35	—	—	6:34	—	—	6:31	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Mostly dry. Very mild (max 13°C on Sat afternoon, min 7°C on Mon morning). Winds increasing (calm on Sat night, fresh winds from the NNE by Sun night).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Thu afternoon, min 13°C on Tue afternoon). Wind will be generally light.

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	17°C	Clear	Wind obs. (11 kph from 160 degs) was rejected.	16 km
Cloverdale 34 km W 106m alt. 1 hour ago	14°C	Dry	Calm (3 kph at 336).
Graton 35 km SSW 87m alt. 59 minutes ago	11°C	Dry	Calm (0 kph at 35).
Alten wx 36 km S 69m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 105).
Sebastopol 36 km SSW 129m alt. 48 minutes ago	12°C	Dry	Calm (0 kph at 200).
Camp Meeker wx 37 km SSW 61m alt. 53 minutes ago	11°C	Dry	Calm (0 kph at 225).
Camp Meeker wx 37 km SSW 61m alt. 34 minutes ago	12°C	Dry	Calm (0 kph at 279).
Knowles Corner wx 37 km S 88m alt. 40 minutes ago	13°C	Dry	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 3).
Monte Rio wx 40 km SSW 76m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 173).

* 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.