– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 9 pm Mon 15 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Mon 15 Dec Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Thu morning, min -11°C on Tue night). Winds increasing (fresh winds from the W on Wed night, extremely windy from the WSW by Thu afternoon).										Days 5–7 Weather Summary A heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu night, min -9°C on Fri afternoon). Winds decreasing (stormy winds from the WSW on Thu night, moderate winds from the SSW by Sat night).
		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	light snow	heavy snow	snow shwrs	some clouds	mod. snow	heavy snow	heavy snow	heavy snow	mod. snow	snow shwrs	some clouds	some clouds	cloudy	mod. snow	light snow	light snow	heavy snow
km/h	WSW	WSW	WSW	WSW	W	WNW	WSW	WSW	WSW	WSW	W	W	W	WSW	SW	SW	WSW	WSW	WSW
See all weather maps
cm	—	—	1	38	4	—	8	18	21	49	6	3	—	—	—	8	1	2	12
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	0	1	1	1	-7	-5	1	2	1	-1	-7	-9	-6	-3	-3	-1	-1	-2	-2
min°C	-1	1	1	-11	-10	-5	-5	1	1	-6	-8	-9	-7	-4	-3	-3	-1	-2	-4
chill°C	-10	-7	-8	-25	-22	-15	-14	-9	-9	-18	-21	-21	-17	-12	-11	-10	-11	-12	-14

Freezing level (m)	2500	2600	2650	2650	1050	1000	1250	2900	2800	2200	1300	1050	650	1150	1450	1850	2350	2100	2050
Cloud base (m)	1850	5700	2000	1750	1850	1800	2750	1800	1800	1800	1850	1800	1800	1800		1800	1800	1800	1800

	—	7:35	—	—	7:35	—	—	7:37	—	—	7:37	—	—	7:37	—	—	7:39	—	—
	—	—	4:29	—	—	4:29	—	—	4:30	—	—	4:30	—	—	4:30	—	—	4:30	—

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Thu morning, min -11°C on Tue night). Winds increasing (fresh winds from the W on Wed night, extremely windy from the WSW by Thu afternoon).

South Sister Volcano Weather (Days 3-6):

A heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu night, min -9°C on Fri afternoon). Winds decreasing (stormy winds from the WSW on Thu night, moderate winds from the SSW by Sat 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	10° C	Dry	Calm (2 kph at 307).
Sisters wx 25 km NNE 1022m alt. 52 minutes ago	10° C	Dry	Calm (2 kph at 345).
Sunriver 34 km SE 1242m alt. 47 minutes ago		Dry
Bend 34 km E 1164.6m alt. 50 minutes ago	9° C	Dry	Wind obs. (8 kph from 38 degs) was rejected.
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	8° C	Clear	Light winds from the SW (19 kph at 220).	16 km
Black Butte Ranch wx 36 km NW 1429m alt. 1 hour ago	4° C	Dry	Light winds from the W (8 kph at 274).
Bend 37 km SSE 1297m alt. 1 hour ago	2° C	-	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 53 minutes ago	8° C	Dry	Calm (0 kph at 103).
Bend wx 39 km E 1118m alt. 1 hour ago	9° C	Dry	Light winds from the SE (8 kph at 139).
Camp Sherman 39 km NNE 920.5m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 19).

* 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.