– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 4 pm Tue 15 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Tue 15 Sep 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 18°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 20°C on Sat afternoon, min 17°C on Sat night). Wind will be generally light.
	Tue 15		Wednesday 16			Thursday 17			Friday 18			Saturday 19			Sunday 20
	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	clear	clear	clear	clear	clear
Cloud base (m)					400							9350			8700	8450
km/h	WSW	WNW	WSW	SW	NNE	NNE	NW	N	N	WNW	N	ESE	WSW	WNW	WNW	NW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	18	14	14	13	11	14	14	16	19	19	19	20	19	17	18	18
min °C	18	15	13	13	11	11	13	14	14	18	18	18	20	17	17	18	18
chill °C	18	13	13	12	10	11	13	14	14	18	18	18	20	17	17	18	18

Freezing level m	4150	3950	3500	3450	3300	3350	3500	3550	4000	4250	4350	4400	4350	4150	3900	3950	4200

	—	—	6:52	—	—	6:52	—	—	6:54	—	—	6:54	—	—	6:56	—	—
	7:19	—	—	7:16	—	—	7:15	—	—	7:14	—	—	7:12	—	—	7:10	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Mostly dry. Very mild (max 18°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Sat afternoon, min 17°C on Sat night). 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	16°C	Clear	Light winds from the SSE (17 kph at 150).	16 km
Cloverdale 34 km W 106m alt. 3 hours ago	20°C	Dry	Calm (2 kph at 231).
Graton 35 km SSW 87m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 35).
Alten wx 36 km S 69m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 106).
Sebastopol 36 km SSW 129m alt. 2 hours ago	13°C	Dry	Calm (5 kph at 245).
Camp Meeker wx 37 km SSW 61m alt. 2 hours ago	13°C	Dry	Calm (3 kph at 248).
Camp Meeker wx 37 km SSW 61m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 295).
Knowles Corner wx 37 km S 88m alt. 3 hours ago	15°C	Dry	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 2 hours ago	15°C	Dry	Calm (0 kph at 32).
Monte Rio wx 40 km SSW 76m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 311).

* 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.