– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 10 pm Thu 14 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 14 May 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 Thu night, min 10°C on Fri night). Winds increasing (light winds from the N on Fri morning, near gales from the NW by Fri night).										Days 5–7 Weather Summary Mostly dry. Warm (max 21°C on Wed afternoon, min 12°C on Sun night). Winds decreasing (near gales from the NNE on Sun night, calm by Tue afternoon).
		Friday 15			Saturday 16			Sunday 17			Monday 18			Tuesday 19			Wednesday 20
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	NNE	NW	NW	NNW	NNW	NNW	NNE	N	N	NNE	N	NNW	NNE	N	W	SW	ESE	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	15	17	17	11	13	14	11	13	13	14	17	16	16	18	19	19	21	20
min °C	15	14	17	10	11	13	11	10	12	12	12	16	16	16	18	18	18	20	19
chill °C	14	14	16	6	9	11	10	8	11	8	8	15	16	15	18	18	18	20	19

Freezing level m	3900	3750	3800	3400	3250	3600	3450	3500	3500	3400	3500	3450	3700	3950	4200	4100	4200	4200	4150
Cloud base (m)	9200			6900	7650	9000		9200

	—	5:58	—	—	5:58	—	—	5:56	—	—	5:56	—	—	5:54	—	—	5:54	—	—
	—	—	—	8:15	—	—	8:15	—	—	8:16	—	—	8:17	—	—	8:17	—	—	8:19

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Mostly dry. Very mild (max 18°C on Thu night, min 10°C on Fri night). Winds increasing (light winds from the N on Fri morning, near gales from the NW by Fri night).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Wed afternoon, min 12°C on Sun night). Winds decreasing (near gales from the NNE on Sun night, calm by Tue afternoon).

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	15° C	Clear	Wind obs. (9 kph from 140 degs) was rejected.	16 km
Santa Rosa 30 km S 40m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 66).
Cloverdale 34 km W 106m alt. 47 minutes ago	18° C	Dry	Light winds from the NNW (8 kph at 330).
Graton 35 km SSW 87m alt. 2 hours ago	13° C	Dry	Calm (0 kph at 34).
Alten wx 36 km S 69m alt. 2 hours ago	13° C	Dry	Calm (0 kph at 114).
Sebastopol 36 km SSW 129m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 78).
Camp Meeker wx 37 km SSW 61m alt. 48 minutes ago	16° C	Dry	Calm (5 kph at 338).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	16° C	Dry	Calm (2 kph at 286).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	16° C	Dry	Calm (0 kph at —).
Camp Meeker wx 39 km SSW 61m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 356).

* 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.