– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 10 pm Thu 22 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Thu 22 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 Thu night. Very mild (max 14°C on Sat afternoon, min 7°C on Fri morning). Winds decreasing (strong winds from the NNE on Fri night, calm by Sat night).										Days 5–7 Weather Summary Mostly dry. Very mild (max 12°C on Sun night, min 5°C on Mon night). Winds decreasing (strong winds from the W on Mon night, calm by Tue night).
		Friday 23			Saturday 24			Sunday 25			Monday 26			Tuesday 27
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)	400	600				9400	9200			9150	8950		450		2200
km/h	NNE	NE	N	NE	NNE	NNW	SE	SSE	SW	SW	WSW	WSW	W	NNE	W	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	9	8	12	13	13	14	14	13	13	12	10	10	6	5	8	7
min °C	8	7	10	12	12	14	12	12	12	11	10	8	5	5	7	6
chill °C	5	4	7	8	10	14	12	12	12	9	8	4	0	2	7	5

Freezing level m	3000	3400	3800	3950	3950	4000	3900	3750	3650	3500	3200	3000	2350	2700	3000	2550

	—	7:26	—	—	7:28	—	—	7:28	—	—	7:30	—	—	7:31	—	—
	—	—	6:21	—	—	6:20	—	—	6:19	—	—	6:16	—	—	6:15	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Some drizzle, heaviest during Thu night. Very mild (max 14°C on Sat afternoon, min 7°C on Fri morning). Winds decreasing (strong winds from the NNE on Fri night, calm by Sat night).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Sun night, min 5°C on Mon night). Winds decreasing (strong winds from the W on Mon night, calm 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	12°C	Mist -.	Calm (0 kph at 0).	1 km
Cloverdale 34 km W 106m alt. 2 hours ago	12°C	Dry	Calm (5 kph at 49).
Graton 35 km SSW 87m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 28).
Alten wx 36 km S 69m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 180).
Sebastopol 36 km SSW 129m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 196).
Camp Meeker wx 37 km SSW 61m alt. 52 minutes ago	9°C	Dry	Calm (0 kph at 225).
Camp Meeker wx 37 km SSW 61m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 288).
Knowles Corner wx 37 km S 88m alt. 2 hours ago	12°C	Dry	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 2).
Monte Rio wx 40 km SSW 76m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 19).

* 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.