– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena Weather Forecast

Mayacmas Mountains · United States

Issued: 4 am Tue 22 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Tue 22 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 22°C on Wed afternoon, min 15°C on Thu night). Winds increasing (calm on Wed afternoon, strong winds from the W by Thu night).									Days 4–6 Weather Summary Mostly dry. Very mild (max 17°C on Fri afternoon, min 9°C on Sun night). Wind will be generally light.
	Tuesday 22			Wednesday 23			Thursday 24			Friday 25			Saturday 26			Sunday 27
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	some clouds	some clouds	cloudy	some clouds	clear
Cloud base (m)								7050		8300	8850	8700	9250		5800	3300	2050
km/h	WNW	WNW	E	ESE	S	SSE	SSW	W	W	NW	WSW	SSE	S	SW	WNW	WNW	WNW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	20	20	19	22	20	20	20	18	15	17	16	14	15	14	12	11	10
min °C	18	19	18	18	21	20	19	19	15	14	16	15	14	14	13	11	10	9
chill °C	18	19	18	18	21	20	19	19	13	12	16	15	13	13	12	9	7	6

Freezing level m	4150	4300	4350	4400	4500	4500	4300	4200	4100	3950	4150	4300	4100	4050	3750	3150	2850	3050

	6:56	—	—	6:58	—	—	6:58	—	—	7:00	—	—	7:01	—	—	7:01	—	—
	—	7:07	—	—	7:06	—	—	7:04	—	—	7:02	—	—	7:00	—	—	7:00	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Mostly dry. Warm (max 22°C on Wed afternoon, min 15°C on Thu night). Winds increasing (calm on Wed afternoon, strong winds from the W by Thu night).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Fri afternoon, min 9°C on Sun 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. 2 hours ago	12°C	Dry and cloudy.	Calm (0 kph at 0).	14 km Low: overcast
Cloverdale 34 km W 106m alt. 48 minutes ago	13°C	Dry	Calm (0 kph at 335).
Graton 35 km SSW 87m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 35).
Alten wx 36 km S 69m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 99).
Sebastopol 36 km SSW 129m alt. 58 minutes ago	10°C	Dry	Calm (0 kph at 160).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 0).
Camp Meeker wx 37 km SSW 61m alt. 49 minutes ago	11°C	Dry	Calm (0 kph at 329).
Knowles Corner wx 37 km S 88m alt. 53 minutes ago	12°C	Dry	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 23 minutes ago	11°C	Dry	Calm (0 kph at 358).
Monte Rio wx 40 km SSW 76m alt. 49 minutes ago	12°C	Dry	Calm (0 kph at 301).

* 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.