– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 10 am Mon 18 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 18 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 18°C on Tue afternoon, min 11°C on Mon morning). Winds decreasing (near gales from the NE on Mon morning, calm by Wed afternoon).									Days 4–6 Weather Summary Mostly dry. Warm (max 20°C on Thu afternoon, min 15°C on Sat night). Wind will be generally light.
	Monday 18			Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23
	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	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear
km/h	NNE	N	NNE	NNE	W	SW	SSE	SW	SE	E	W	WNW	S	SW	SW	S	SSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	12	16	15	16	18	17	16	18	18	18	20	19	18	19	18	16	17	17
min °C	11	15	14	14	18	17	16	18	17	17	20	18	18	19	17	16	16	15
chill °C	7	13	12	13	18	16	15	18	17	17	20	18	18	19	17	16	15	15

Freezing level m	2950	3050	3050	3300	3450	3700	3700	3800	3900	3950	4050	4000	3950	4150	4100	4050	4100	4050
Cloud base (m)						8950	6450		8650

	5:56	—	—	5:54	—	—	5:54	—	—	5:54	—	—	5:52	—	—	5:52	—	—
	—	—	8:17	—	—	8:17	—	—	8:19	—	—	8:20	—	—	8:21	—	—	8:22

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 Mon morning). Winds decreasing (near gales from the NE on Mon morning, calm by Wed afternoon).

Mount Saint Helena Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Thu afternoon, min 15°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. 2 hours ago	28° C	Clear	Moderate winds from the NNE (24 kph at 30).	16 km
Santa Rosa 30 km S 40m alt. 34 minutes ago	31° C	Dry	Wind obs. (6 kph from 335 degs) was rejected.
Cloverdale 34 km W 106m alt. 25 minutes ago	29° C	Dry	Light winds from the ENE (6 kph at 58).
Graton 35 km SSW 87m alt. 3 hours ago	27° C	Dry	Light winds from the NE (6 kph at 35).
Alten wx 36 km S 69m alt. 55 minutes ago	30° C	Dry	Calm (0 kph at 246).
Sebastopol 36 km SSW 129m alt. 1 hour ago	30° C	Dry	Calm (0 kph at 355).
Guerneville wx 36 km SW 18m alt. 1 hour ago		-	Calm (0 kph at 291).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	32° C	Dry	Calm (5 kph at 90).
Camp Meeker wx 37 km SSW 61m alt. 47 minutes ago	28° C	Dry	Calm (2 kph at 88).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	29° C	Dry	Calm (2 kph at 90).

* 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.