– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 9 pm Tue 16 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Tue 16 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 decreasing (extremely windy from the WSW on Tue night, fresh winds from the WSW by Wed night).										Days 5–7 Weather Summary A moderate fall of snow, heaviest on Sun night. Temperatures will be below freezing (max -4°C on Sun afternoon, min -11°C on Fri night). Winds increasing (strong winds from the WSW on Sat morning, severe gales from the SW by Sun night).
		Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy snow	snow shwrs	some clouds	light snow	heavy snow	mod. snow	heavy snow	heavy snow	mod. snow	snow shwrs	some clouds	some clouds	some clouds	some clouds	mod. snow	snow shwrs	some clouds	cloudy	light snow
km/h	WSW	W	W	WSW	WSW	WSW	WSW	WSW	WSW	W	WSW	WSW	WSW	WSW	WSW	SW	WSW	WSW	SW
See all weather maps
cm	37	4	—	5	17	6	32	14	6	4	—	—	—	—	6	8	—	—	1
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	1	-8	-5	0	2	1	-1	-6	-9	-8	-6	-6	-7	-5	-4	-6	-6	-6	-7
min°C	-11	-11	-6	-6	2	1	-4	-7	-10	-11	-7	-7	-7	-6	-5	-7	-7	-6	-7
chill°C	-25	-24	-17	-15	-8	-10	-15	-18	-22	-23	-17	-17	-17	-16	-17	-20	-18	-17	-18

Freezing level (m)	2700	1000	1000	1100	3000	2700	2200	1400	1050	800	900	1000	1000	1400	1700	1300	1400	1400	1200
Cloud base (m)	1750	1850	1800	2800	1800	1800	1800	1850	1800	1800	1800	1800	1800	1800	1800	1800	1800	1800	1800

	—	7:35	—	—	7:37	—	—	7:37	—	—	7:37	—	—	7:39	—	—	7:39	—	—
	—	—	4:29	—	—	4:30	—	—	4:30	—	—	4:30	—	—	4:30	—	—	4:31	—

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 decreasing (extremely windy from the WSW on Tue night, fresh winds from the WSW by Wed night).

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Sun night. Temperatures will be below freezing (max -4°C on Sun afternoon, min -11°C on Fri night). Winds increasing (strong winds from the WSW on Sat morning, severe gales from the SW by Sun 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	11° C	Dry	Calm (3 kph at 287).
Sisters wx 25 km NNE 1022m alt. 45 minutes ago	11° C	Dry	Calm (3 kph at 256).
Sunriver 34 km SE 1242m alt. 54 minutes ago		Dry
Bend 34 km E 1164.6m alt. 2 hours ago	9° C	Dry	Light winds from the SSW (14 kph at 197).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	8° C	Light rain .	Moderate winds from the SSW (24 kph at 210).	8 km Low: few Mid: broken High: overcast
Black Butte Ranch wx 36 km NW 1429m alt. 1 hour ago	7° C	Light rain.	Wind obs. (23 kph from 276 degs) was rejected.
Bend 37 km SSE 1297m alt. 1 hour ago	8° C	Light rain.	Calm (2 kph at 0).
Bend 37 km ESE 1158m alt. 44 minutes ago	9° C	Light rain.	Calm (2 kph at 134).
Bend wx 39 km E 1118m alt. 2 hours ago	11° C	Dry	Light winds from the S (16 kph at 187).
Camp Sherman 39 km NNE 920.5m alt. 58 minutes ago	11° C	Dry	Calm (0 kph at 8).

* 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.