– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 10 am Mon 20 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 20 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–3 Weather Summary A moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -2°C on Tue morning, min -12°C on Wed morning). Winds increasing (light winds from the NNW on Mon afternoon, severe gales from the WNW by Wed morning).									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Sat morning. Temperatures will be below freezing (max -2°C on Thu night, min -13°C on Sat morning). Winds increasing (calm on Thu afternoon, gales from the W by Fri night).
	Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	cloudy	some clouds	mod. snow	mod. snow	snow shwrs	clear	clear	some clouds	clear	cloudy	cloudy	snow shwrs	light snow	snow shwrs	clear
km/h	NNE	NW	NNW	NW	W	W	WNW	NW	N	NE	NE	WNW	W	W	W	WNW	WNW	NNW
Wave Height Map See all maps
cm	—	—	—	—	—	9	6	3	—	—	—	—	—	—	3	5	2.0	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	-7	-6	-4	-2	-3	-3	-10	-8	-5	-5	-4	-2	-3	-4	-5	-12	-9	-3
min°C	-7	-6	-5	-3	-3	-7	-12	-10	-6	-5	-5	-4	-3	-5	-12	-13	-10	-6
chill°C	-15	-9	-12	-10	-10	-20	-27	-23	-17	-11	-9	-4	-11	-15	-26	-27	-22	-17

Freezing level (m)	2300	2500	2100	2800	2650	2200	1450	1750	1600	2350	2650	2400	2600	2500	1700	1500	1800	1400
Cloud base (m)	1900	3100	1850	1850	2300	1800	1800	1800	1800	1850	2300	1900	5950	2300	1900	1800	1800	1800

	5:35	—	—	5:33	—	—	5:33	—	—	5:31	—	—	5:31	—	—	5:30	—	—
	—	—	8:31	—	—	8:32	—	—	8:34	—	—	8:35	—	—	8:36	—	—	8:37

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: A moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -2°C on Tue morning, min -12°C on Wed morning). Winds increasing (light winds from the NNW on Mon afternoon, severe gales from the WNW by Wed morning).

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Sat morning. Temperatures will be below freezing (max -2°C on Thu night, min -13°C on Sat morning). Winds increasing (calm on Thu afternoon, gales from the W by Fri night).

This table gives the weather forecast for South Sister Volcano at the specific elevation of 3157 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Sister Volcano. 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 Oregon.

Live conditions reported by 5 closest weather stations

Weather Station	Temp.	Weather	Wind
Sunriver wx 23 km SE 1684m alt. 1 hour ago	9° C	-	Calm (0 kph at 152).
Sisters wx 25 km NNE 1022m alt. 1 hour ago	16° C	Dry	Calm (2 kph at 14).
Sisters wx 25 km NNE 969m alt. 39 minutes ago	16° C	Dry	Calm (5 kph at 338).
Sisters 32 km NE 964m alt. 3 hours ago	12° C	Dry	Calm (3 kph at 31).
Sunriver 34 km SE 1242m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 131).

* 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.