– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 10 pm Tue 12 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 12 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Mild with light rain (total 4mm) on Tue night Becoming colder with a light covering of snow, mostly falling on Wed morning. Freeze-thaw conditions (max 8°C on Tue night, min -6°C on Wed morning). Mainly gales.										Days 5–7 Weather Summary A moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 3°C on Mon afternoon, min -9°C on Sat night). Winds decreasing (strong winds from the WNW on Sat night, light winds from the N by Sun afternoon).
		Wednesday 13			Thursday 14			Friday 15			Saturday 16			Sunday 17			Monday 18
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	snow shwrs	mod. snow	some clouds	some clouds	clear	clear	some clouds	clear	cloudy	snow shwrs	light snow	light snow	heavy snow	clear	some clouds	clear	clear	clear	clear
km/h	SW	W	W	WNW	W	W	W	W	W	W	W	W	WNW	N	N	NW	NNW	W	W
See all weather maps
cm	2	6	—	—	—	—	—	—	—	1	3	2	11	—	—	—	—	—	—
mm	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	8	-5	1	0	3	3	1	0	1	-3	-6	-6	-7	-4	-2	-2	1	3	2
min °C	-2	-6	-1	0	2	2	-1	-1	-1	-7	-7	-6	-9	-7	-3	-3	-1	2	1
chill °C	-11	-17	-9	-8	-4	-5	-9	-8	-8	-17	-17	-15	-20	-14	-7	-8	-6	0	-4

Freezing level m	2750	1700	2650	2400	2900	2700	2450	2500	2400	1450	1550	1700	1200	1800	2200	1350	2600	2950	3200
Cloud base (m)	1850	1850	1900	1800			1850		2700	1800	1800	1800	1800	1800	1900	5200		2450

	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:37	—	—	5:37	—	—
	—	—	—	8:23	—	—	8:24	—	—	8:25	—	—	8:27	—	—	8:28	—	—	8:29

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Mild with light rain (total 4mm) on Tue night Becoming colder with a light covering of snow, mostly falling on Wed morning. Freeze-thaw conditions (max 8°C on Tue night, min -6°C on Wed morning). Mainly gales.

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 3°C on Mon afternoon, min -9°C on Sat night). Winds decreasing (strong winds from the WNW on Sat night, light winds from the N by Sun afternoon).

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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Sisters wx 25 km NNE 1022m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 0).
Bend 34 km E 1147m alt. 47 minutes ago	16° C	Dry	Calm (2 kph at 41).
Bend 34 km E 1164.6m alt. 1 hour ago	17° C	Dry	Calm (2 kph at 117).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	15° C	Clear	Wind obs. (13 kph from 170 degs) was rejected.	16 km
Black Butte Ranch wx 36 km NW 1429m alt. 1 hour ago	9° C	Dry	Calm (2 kph at 260).
Bend 37 km SSE 1297m alt. 55 minutes ago	14° C	Dry	Calm (3 kph at 0).
Bend 37 km ESE 1158m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 317).
Camp Sherman 39 km NNE 920.5m alt. 1 hour ago	16° C	Dry	Calm (2 kph at 209).
Deschutes River Woods wx 40 km ESE 1185m alt. 49 minutes ago	16° C	Dry	Calm (0 kph at 328).
Rainbow wx 41 km WSW 410m alt. 53 minutes ago	10° C	Dry	Light winds from the SW (10 kph at 217).

* 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.