– Lat/Long: 38.67° N 122.63° W

Mount Saint Helena
Weather Forecast, United States
Issued: 3 am Wed 18 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Wed 18 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Saint Helena Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 10mm) at first, then becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 5°C on Thu afternoon, min 0°C on Thu night). Winds decreasing (fresh winds from the NW on Thu morning, calm by Thu night).									Days 4–6 Weather Summary Heavy rain (total 57mm), heaviest during Sun afternoon. Very mild (max 11°C on Sun night, min 4°C on Sat morning). Winds decreasing (strong winds from the S on Sun morning, calm by Mon night).
	Wednesday 18			Thursday 19			Friday 20			Saturday 21			Sunday 22			Monday 23
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light snow	rain shwrs	clear	some clouds	cloudy	rain shwrs	some clouds	cloudy	cloudy	light rain	mod. rain	heavy rain	heavy rain	mod. rain	light rain	light rain
km/h	W	WNW	S	NW	NW	NNE	ESE	SE	SE	SE	SE	SSE	S	SSW	SSW	SSW	SW	SW
See all weather maps
cm	—	—	3	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.5	0.9	5	2	—	—	—	0.1	—	—	—	4	6	17	17	7	4	2
max °C	4	4	3	4	5	1	5	5	1	6	6	8	10	10	11	11	10	10
min °C	2	2	1	3	2	0	3	3	1	4	5	6	9	10	11	11	10	9
chill °C	-2	-2	-3	-2	-2	0	3	1	-1	1	1	2	5	6	8	8	8	7

Freezing level m	850	1000	1050	850	1050	750	950	1050	750	1250	1300	1700	2150	2300	2250	2300	2300	2250
Cloud base (m)	500	450	400	400	500	450	450	700	600	650	700	400	350	350	400	400	350	500

	6:56	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:52	—	—	6:50	—	—
	—	5:51	—	—	5:52	—	—	5:53	—	—	5:54	—	—	5:55	—	—	5:57	—

Mount Saint Helena Weather (Days 0-3):

The weather forecast for Mount Saint Helena is: Light rain (total 10mm) at first, then becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 5°C on Thu afternoon, min 0°C on Thu night). Winds decreasing (fresh winds from the NW on Thu morning, calm by Thu night).

Mount Saint Helena Weather (Days 3-6):

Heavy rain (total 57mm), heaviest during Sun afternoon. Very mild (max 11°C on Sun night, min 4°C on Sat morning). Winds decreasing (strong winds from the S on Sun morning, calm by Mon 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Santa Rosa Airport 25 km SSW 219m alt. 1 hour ago	1° C	Mist -.	Calm (0 kph at 0).	3 km Low: scattered
Santa Rosa 30 km S 40m alt. 51 minutes ago	1° C	-	Calm (0 kph at 221).
Cloverdale 34 km W 106m alt. 28 minutes ago	-1° C	-	Calm (0 kph at 306).
Graton 35 km SSW 87m alt. 32 minutes ago	-1° C	-	Calm (0 kph at 32).
Alten wx 36 km S 69m alt. 1 hour ago	1° C	-	Calm (2 kph at 111).
Sebastopol 36 km SSW 129m alt. 20 minutes ago	-1° C	-	Calm (0 kph at 307).
Guerneville wx 36 km SW 18m alt. 1 hour ago		-	Calm (0 kph at 5).
Camp Meeker wx 37 km SSW 61m alt. 39 minutes ago	0° C	-	Calm (0 kph at 248).
Camp Meeker wx 37 km SSW 61m alt. 37 minutes ago	0° C	-	Calm (2 kph at 283).
Knowles Corner wx 37 km S 88m alt. 43 minutes ago	1° C	-	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.