– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 3 am Mon 15 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Mon 15 Dec Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 6mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -10°C on Wed morning). Winds decreasing (extremely windy from the WSW on Tue night, fresh winds from the W by Wed night).									Days 4–6 Weather Summary A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 1°C on Thu morning, min -9°C on Fri night). Winds decreasing (extremely windy from the WSW on Thu night, fresh winds from the W by Sat morning).
	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light snow	some clouds	some clouds	some clouds	heavy snow	snow shwrs	some clouds	snow shwrs	heavy snow	heavy snow	heavy snow	heavy snow	snow shwrs	snow shwrs	some clouds	some clouds	some clouds
km/h	WSW	WSW	WSW	WSW	WSW	WSW	W	W	WSW	WSW	WSW	WSW	WSW	W	W	W	W	WSW
See all weather maps
cm	—	1	—	—	—	34	6	—	4	16	18	38	19	11	1	—	—	—
mm	1.5	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	4	2	-1	1	1	1	-8	-5	0	1	1	1	-3	-7	-9	-7	-7	-8
min°C	4	0	-1	0	0	-9	-10	-5	-6	1	1	-2	-5	-8	-9	-7	-8	-9
chill°C	-4	-9	-10	-8	-9	-22	-22	-15	-15	-9	-9	-12	-16	-21	-20	-16	-18	-20

Freezing level (m)	3200	2850	2350	2550	2450	2650	1100	1000	950	2600	2700	2400	1850	1250	450	900	700	250
Cloud base (m)	1950	1900	1800	1900	2100	1750	1850	1800	1950	1800	1800	1800	1850	1800	1800	1800	1800	1800

	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 6mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -10°C on Wed morning). Winds decreasing (extremely windy from the WSW on Tue night, fresh winds from the W by Wed night).

South Sister Volcano Weather (Days 3-6):

A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 1°C on Thu morning, min -9°C on Fri night). Winds decreasing (extremely windy from the WSW on Thu night, fresh winds from the W by Sat morning).

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. 2 hours ago	10° C	Dry	Calm (2 kph at 300).
Sisters wx 25 km NNE 1022m alt. 46 minutes ago	11° C	Dry	Calm (2 kph at 113).
Sunriver 34 km SE 1242m alt. 2 hours ago		Dry
Bend 34 km E 1164.6m alt. 1 hour ago	9° C	Dry	Light winds from the S (11 kph at 184).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	6° C	-	Light winds from the SW (19 kph at 220).	14 km
Black Butte Ranch wx 36 km NW 1429m alt. 38 minutes ago	7° C	Dry	Wind obs. (13 kph from 285 degs) was rejected.
Bend 37 km SSE 1297m alt. 1 hour ago	4° C	Dry	Calm (2 kph at 180).
Bend 37 km ESE 1158m alt. 46 minutes ago	9° C	Dry	Calm (0 kph at 225).
Bend wx 39 km E 1118m alt. 2 hours ago	11° C	Dry	Light winds from the SSW (11 kph at 210).
Camp Sherman 39 km NNE 920.5m alt. 3 hours ago	8° C	Dry

* 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.