– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 9 pm Sun 14 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sun 14 Dec Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 8mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Sun night, min -10°C on Tue night). Winds increasing (strong winds from the WSW on Sun night, extremely windy from the WSW by Tue night).										Days 5–7 Weather Summary A heavy fall of snow, heaviest during Thu morning. Freeze-thaw conditions (max 1°C on Thu morning, min -8°C on Fri night). Winds increasing (fresh winds from the W on Wed night, extremely windy from the WSW by Thu night).
		Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	light snow	cloudy	some clouds	some clouds	heavy snow	mod. snow	cloudy	light snow	heavy snow	heavy snow	heavy snow	heavy snow	heavy snow	snow shwrs	clear	clear	some clouds
km/h	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	WSW	WSW	WSW	WSW	WSW	W	W	W	WSW	WSW
See all weather maps
cm	—	—	1	—	—	—	33	6	—	5	16	18	27	11	15	1	—	—	—
mm	3	1.1	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	4	4	2	-1	0	1	1	-7	-5	0	1	1	0	-1	-4	-7	-6	-6	-5
min°C	3	4	-1	-1	0	-1	-10	-10	-5	-6	1	1	-1	-1	-7	-8	-6	-6	-6
chill°C	-4	-4	-10	-10	-8	-10	-23	-22	-15	-15	-9	-8	-12	-12	-19	-18	-15	-15	-16

Freezing level (m)	3200	3150	2900	2350	2550	2400	2500	1100	1100	1200	2750	2650	2500	2400	1550	900	950	1050	800
Cloud base (m)	2550	2100	1850	1800	1900	1950	1800	1850	1800	1850	1800	1800	1900	1800	1800	1800	1800	1800	1900

	—	7:35	—	—	7:35	—	—	7:35	—	—	7:37	—	—	7:37	—	—	7:37	—	—
	—	—	4:29	—	—	4:29	—	—	4:29	—	—	4:30	—	—	4:30	—	—	4:30	—

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Light rain (total 8mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Sun night, min -10°C on Tue night). Winds increasing (strong winds from the WSW on Sun night, extremely windy from the WSW by Tue night).

South Sister Volcano Weather (Days 3-6):

A heavy fall of snow, heaviest during Thu morning. Freeze-thaw conditions (max 1°C on Thu morning, min -8°C on Fri night). Winds increasing (fresh winds from the W on Wed night, extremely windy from the WSW by Thu night).

This table gives the weather forecast for South Sister Volcano at the specific elevation of 2500 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	Cloud Visibility Cloud / Visibility
Sisters wx 25 km NNE 969m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 0).
Sisters wx 25 km NNE 1022m alt. 43 minutes ago	8° C	Dry	Calm (0 kph at 298).
Sunriver 34 km SE 1242m alt. 50 minutes ago		Dry
Bend 34 km E 1164.6m alt. 1 hour ago	11° C	Dry	Light winds from the SSE (8 kph at 163).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	7° C	-	Light winds from the WSW (15 kph at 250).	16 km Low: few
Black Butte Ranch wx 36 km NW 1429m alt. 55 minutes ago	9° C	Dry	Calm (2 kph at 263).
Bend 37 km SSE 1297m alt. 1 hour ago		-	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 43 minutes ago	11° C	Dry	Calm (0 kph at 128).
Bend wx 39 km E 1118m alt. 1 hour ago	10° C	Dry	Light winds from the SW (6 kph at 230).
Camp Sherman 39 km NNE 920.5m alt. 54 minutes ago	6° C	Dry	Calm (0 kph at 199).

* 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.