– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 10 pm Tue 26 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 26 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Mild at first with light rain (total 3mm) on Thu afternoon followed by colder weather and light fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 5°C on Wed night, min -7°C on Tue night). Winds decreasing (severe gales from the NE on Tue night, calm by Thu night).										Days 5–7 Weather Summary Mostly dry. Temperatures will be below freezing (max 0°C on Mon afternoon, min -7°C on Sat afternoon). Winds decreasing (strong winds from the W on Fri night, calm by Sun morning).
		Wednesday 27			Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	some clouds	clear	some clouds	rain shwrs	snow shwrs	mod. snow	light snow	snow shwrs	clear	some clouds	clear	clear	clear	some clouds	clear	some clouds	some clouds	some clouds
km/h	NE	NE	NNE	ENE	NE	NNE	N	NW	W	W	WSW	WSW	NW	WNW	SSW	SSW	S	SSW	SW
See all weather maps
cm	2	—	—	—	—	5	7	1	1	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	3	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	1	3	4	5	5	4	1	-1	-2	-1	-4	-6	-5	-5	-5	-4	-3	0	2
min °C	-7	2	4	5	5	2	-1	-2	-2	-4	-5	-7	-5	-6	-5	-4	-4	-1	1
chill °C	-15	-6	-2	-2	2	-3	-5	-9	-9	-11	-10	-10	-11	-6	-5	-9	-9	-4	-4

Freezing level m	2500	3450	3800	3900	3750	3450	3100	2650	2850	2350	2350	2400	1400	2450	2650	2450	2750	3150	3400
Cloud base (m)	1800	2300		4750	4100	1850	2050	1800	1900	1800	1850	2700	1750		3150	2850	6850

	—	5:30	—	—	5:28	—	—	5:28	—	—	5:28	—	—	5:26	—	—	5:26	—	—
	—	—	—	8:37	—	—	8:38	—	—	8:39	—	—	8:40	—	—	8:42	—	—	8:43

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Mild at first with light rain (total 3mm) on Thu afternoon followed by colder weather and light fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 5°C on Wed night, min -7°C on Tue night). Winds decreasing (severe gales from the NE on Tue night, calm by Thu night).

South Sister Volcano Weather (Days 3-6):

Mostly dry. Temperatures will be below freezing (max 0°C on Mon afternoon, min -7°C on Sat afternoon). Winds decreasing (strong winds from the W on Fri night, calm by Sun morning).

This table gives the weather forecast for South Sister Volcano at the specific elevation of 3157 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. 2 hours ago	8° C	Dry	Calm (0 kph at 0).
Bend 34 km E 1147m alt. 2 hours ago	9° C	Dry	Wind obs. (6 kph from 41 degs) was rejected.
Bend 34 km E 1164.6m alt. 1 hour ago	9° C	Dry	Light winds from the N (6 kph at 358).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	7° C	-	Light winds from the NE (15 kph at 40).	16 km
Black Butte Ranch wx 36 km NW 1429m alt. 2 hours ago	4° C	Dry	Calm (0 kph at 271).
Bend 37 km SSE 1297m alt. 1 hour ago	5° C	Dry	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 2 hours ago	9° C	Dry	Calm (2 kph at 332).
Camp Sherman 39 km NNE 920.5m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 343).
Rainbow wx 41 km WSW 410m alt. 52 minutes ago	5° C	Dry	Light winds from the WNW (11 kph at 298).
Cloverdale wx 42 km NE 947m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 229).

* 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.