– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 3 am Sun 21 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sun 21 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 116mm), heaviest during Tue night. Very mild (max 13°C on Sun morning, min 7°C on Tue night). Winds decreasing (strong winds from the SSW on Sun morning, light winds from the SW by Mon afternoon).									Days 4–6 Weather Summary Heavy rain (total 58mm), heaviest during Wed night. Mild temperatures (max 9°C on Wed afternoon, min 6°C on Thu night). Winds decreasing (gales from the S on Wed night, calm by Fri night).
	Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy rain	heavy rain	mod. rain	light rain	light rain	mod. rain	mod. rain	heavy rain	heavy rain	rain shwrs	light rain	heavy rain	light rain	light rain	heavy rain	rain shwrs	light rain	rain shwrs
km/h	SSW	SW	SW	SW	SW	SSW	SSE	SSE	WSW	SSW	S	S	SSW	SSW	SW	SSW	SSW	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	20	22	7	0.3	5	9	5	14	34	0.2	4	26	4	4	12	2	1.2	4
max °C	13	13	12	11	10	10	10	11	11	8	9	9	7	7	7	8	8	7
min °C	13	12	11	11	10	10	10	10	7	7	9	7	7	7	6	8	7	7
chill °C	10	10	10	10	9	8	8	6	4	4	5	2	3	3	2	5	5	5

Freezing level m	2850	2900	2650	2650	2500	2350	2300	2200	2000	1750	1750	1950	1450	1450	1450	1550	1550	1600
Cloud base (m)	350	350	450	500	800	350	350	300	350	350	450	350	450	350	350	550	500	350

	7:24	—	—	7:24	—	—	7:24	—	—	7:26	—	—	7:26	—	—	7:26	—	—
	—	4:52	—	—	4:52	—	—	4:52	—	—	4:53	—	—	4:53	—	—	4:54	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Heavy rain (total 116mm), heaviest during Tue night. Very mild (max 13°C on Sun morning, min 7°C on Tue night). Winds decreasing (strong winds from the SSW on Sun morning, light winds from the SW by Mon afternoon).

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 58mm), heaviest during Wed night. Mild temperatures (max 9°C on Wed afternoon, min 6°C on Thu night). Winds decreasing (gales from the S on Wed night, calm by Fri night).

This table gives the weather forecast for Mount Saint Helena at the specific elevation of 500 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Santa Rosa Airport 25 km SSW 219m alt. 2 hours ago	15° C	Light rain .	Moderate winds from the S (20 kph at 180).	6 km Mid: broken High: overcast
Santa Rosa 30 km S 40m alt. 1 hour ago	15° C	Dry	Wind obs. (14 kph from 101 degs) was rejected.
Cloverdale 34 km W 106m alt. 1 hour ago	15° C	Dry	Wind obs. (8 kph from 127 degs) was rejected.
Graton 35 km SSW 87m alt. 1 hour ago	14° C	Dry	Calm (5 kph at 32).
Alten wx 36 km S 69m alt. 47 minutes ago	15° C	Dry	Calm (5 kph at 127).
Sebastopol 36 km SSW 129m alt. 41 minutes ago	14° C	Dry	Light winds from the S (10 kph at 178).
Guerneville wx 36 km SW 18m alt. 1 hour ago		-	Calm (0 kph at 82).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	14° C	Light rain.	Wind obs. (11 kph from 158 degs) was rejected.
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	13° C	Light rain.	Wind obs. (13 kph from 323 degs) was rejected.
Knowles Corner wx 37 km S 88m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 225).

* 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.