– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 9 am Thu 18 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Thu 18 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 35mm), heaviest during Sat night. Very mild (max 10°C on Thu morning, min 6°C on Thu night). Mainly gales.									Days 4–6 Weather Summary Heavy rain (total 105mm), heaviest during Tue morning. Mild temperatures (max 8°C on Sun morning, min 1°C on Tue night). Winds increasing (light winds from the SSW on Mon afternoon, stormy winds from the S by Tue afternoon).
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	light rain	light rain	light rain	light rain	light rain	mod. rain	heavy rain	light rain	light rain	rain shwrs	some clouds	light rain	heavy rain	heavy rain	heavy rain	rain shwrs
km/h	W	W	WSW	WSW	W	WSW	WSW	SW	SW	SW	WSW	WSW	SSW	SW	SSE	S	S	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.2	3	5	2	2	6	16	2	0.5	0.1	—	1.5	42	22	20	16
max°C	10	8	7	9	9	8	9	8	9	8	7	6	6	6	6	6	7	6
min°C	10	8	6	8	8	8	8	8	8	7	7	6	6	5	5	6	6	1
chill°C	7	4	1	2	4	4	5	6	4	1	2	1	3	3	2	-1	-2	-6

Freezing level (m)	3800	3900	3800	3450	3100	2800	2800	2900	3150	2850	2750	2550	2450	2250	2450	2500	2400	2100
Cloud base (m)		900	500	400	350	450	650	350	350	400	400	6500	6100	2450	350	350	300	300

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

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Heavy rain (total 35mm), heaviest during Sat night. Very mild (max 10°C on Thu morning, min 6°C on Thu night). Mainly gales.

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 105mm), heaviest during Tue morning. Mild temperatures (max 8°C on Sun morning, min 1°C on Tue night). Winds increasing (light winds from the SSW on Mon afternoon, stormy winds from the S 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Santa Rosa Airport 25 km SSW 219m alt. 2 hours ago	13° C	Dry and partly cloudy.	Calm (0 kph at 0).	14 km Low: scattered Mid: broken
Santa Rosa 30 km S 40m alt. 44 minutes ago	14° C	Dry	Calm (0 kph at 290).
Cloverdale 34 km W 106m alt. 50 minutes ago	12° C	Dry	Calm (2 kph at 133).
Graton 35 km SSW 87m alt. 36 minutes ago	12° C	Dry	Calm (0 kph at 36).
Alten wx 36 km S 69m alt. 33 minutes ago	13° C	Dry	Calm (0 kph at 99).
Sebastopol 36 km SSW 129m alt. 34 minutes ago	11° C	Dry	Calm (0 kph at 138).
Guerneville wx 36 km SW 18m alt. 49 minutes ago	13° C	Dry	Calm (0 kph at 176).
Camp Meeker wx 37 km SSW 61m alt. 35 minutes ago	12° C	Dry	Calm (0 kph at 45).
Camp Meeker wx 37 km SSW 61m alt. 53 minutes ago	11° C	Dry	Calm (0 kph at 359).
Knowles Corner wx 37 km S 88m alt. 41 minutes ago	12° 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.