– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 3 am Sat 20 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sat 20 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 77mm), heaviest during Sun morning. Very mild (max 14°C on Sat morning, min 8°C on Sun night). Winds decreasing (strong winds from the SW on Sun morning, calm by Mon night).									Days 4–6 Weather Summary Heavy rain (total 154mm), heaviest during Tue night. Very mild (max 11°C on Tue night, min 7°C on Wed afternoon). Winds increasing (light winds from the SW on Tue night, strong winds from the S by Wed night).
	Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	light rain	heavy rain	heavy rain	mod. rain	rain shwrs	some clouds	cloudy	mod. rain	light rain	heavy rain	heavy rain	light rain	light rain	heavy rain	mod. rain	heavy rain	heavy rain
km/h	SW	S	SW	SSW	WSW	WSW	SW	SW	SW	S	SSE	SSE	SW	S	SSE	S	SSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	3	36	24	7	0.2	—	—	7	2	10	81	2	0.7	19	8	11	20
max °C	14	13	14	13	12	11	11	11	9	10	10	11	8	8	9	8	7	7
min °C	12	12	13	13	11	8	9	9	8	9	10	8	8	7	8	8	7	7
chill °C	11	11	11	10	9	6	8	9	6	6	7	6	5	4	4	4	2	3

Freezing level m	3050	3050	3150	2900	2850	2500	2450	2400	2150	2300	2200	2450	1850	1650	1900	1750	1550	1550
Cloud base (m)	450	800	350	350	350	400		6400	1750	350	350	300	400	500	500	350	300	500

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

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Heavy rain (total 77mm), heaviest during Sun morning. Very mild (max 14°C on Sat morning, min 8°C on Sun night). Winds decreasing (strong winds from the SW on Sun morning, calm by Mon night).

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 154mm), heaviest during Tue night. Very mild (max 11°C on Tue night, min 7°C on Wed afternoon). Winds increasing (light winds from the SW on Tue night, strong winds from the S by Wed 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. 3 hours ago	13° C	Mist -.	Light winds from the S (6 kph at 170).	1 km
Santa Rosa 30 km S 40m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 110).
Cloverdale 34 km W 106m alt. 50 minutes ago	12° C	Dry	Calm (0 kph at 32).
Graton 35 km SSW 87m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 35).
Alten wx 36 km S 69m alt. 1 hour ago	12° C	Dry	Calm (3 kph at 132).
Sebastopol 36 km SSW 129m alt. 43 minutes ago	12° C	Dry	Calm (0 kph at 188).
Guerneville wx 36 km SW 18m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 51).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 225).
Camp Meeker wx 37 km SSW 61m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 304).
Knowles Corner wx 37 km S 88m alt. 1 hour ago	13° 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.