– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 9 am Fri 19 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Fri 19 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 75mm), heaviest during Sat night. Very mild (max 14°C on Sat morning, min 8°C on Sun night). Mainly fresh winds.									Days 4–6 Weather Summary Heavy rain (total 60mm), heaviest during Tue night. Very mild (max 11°C on Mon morning, min 6°C on Wed night). Winds increasing (calm on Mon afternoon, near gales from the S by Tue night).
	Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	rain shwrs	cloudy	light rain	heavy rain	mod. rain	light rain	light rain	cloudy	cloudy	mod. rain	heavy rain	light rain	heavy rain	rain shwrs	rain shwrs	heavy rain
km/h	SW	WSW	WSW	WSW	S	SW	SW	SW	W	WSW	WSW	SSE	SSE	SSE	SSE	WSW	SSE	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	4	6	0.4	—	1.2	55	8	1.3	0.2	—	—	7	14	0.8	20	0.8	0.8	16
max°C	12	12	12	14	13	13	13	12	10	11	11	9	10	11	11	7	8	9
min°C	11	12	11	12	12	12	12	11	8	10	9	8	9	10	8	7	7	6
chill°C	8	10	9	11	11	10	10	9	6	9	9	8	6	6	4	4	3	1

Freezing level (m)	3500	3300	3050	3100	3000	3200	3050	2750	2500	2400	2400	2350	2250	2300	2300	1450	1600	1800
Cloud base (m)	400	350	400	450	1600	350	400	650	400	6200	5900	1800	350	300	350	350	600	300

	7:22	—	—	7:24	—	—	7:24	—	—	7:24	—	—	7:24	—	—	7:26	—	—
	—	4:51	—	—	4:52	—	—	4:52	—	—	4:52	—	—	4:52	—	—	4:53	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Heavy rain (total 75mm), heaviest during Sat night. Very mild (max 14°C on Sat morning, min 8°C on Sun night). Mainly fresh winds.

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 60mm), heaviest during Tue night. Very mild (max 11°C on Mon morning, min 6°C on Wed night). Winds increasing (calm on Mon afternoon, near gales from the S by Tue 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 .	Wind obs. (9 kph from 140 degs) was rejected.	3 km Mid: overcast
Santa Rosa 30 km S 40m alt. 49 minutes ago	16° C	Dry	Calm (0 kph at 165).
Cloverdale 34 km W 106m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 130).
Graton 35 km SSW 87m alt. 52 minutes ago	15° C	Dry	Calm (0 kph at 36).
Alten wx 36 km S 69m alt. 2 hours ago	15° C	Dry	Calm (2 kph at 169).
Sebastopol 36 km SSW 129m alt. 59 minutes ago	15° C	Dry	Calm (0 kph at 158).
Guerneville wx 36 km SW 18m alt. 2 hours ago	15° C	Dry	Calm (0 kph at 53).
Camp Meeker wx 37 km SSW 61m alt. 2 hours ago	14° C	Light rain.	Calm (5 kph at 203).
Camp Meeker wx 37 km SSW 61m alt. 52 minutes ago	14° C	Dry	Calm (2 kph at 266).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	14° C	Dry	Calm (0 kph at —).

* 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.