– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 4 am Tue 12 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 12 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–3 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 7°C on Tue morning, min -9°C on Wed morning). Winds increasing (moderate winds from the SSE on Tue afternoon, severe gales from the WNW by Wed night).									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Sat night. Temperatures will be below freezing (max -3°C on Sun night, min -12°C on Fri night). Winds decreasing (gales from the W on Fri night, calm by Sun night).
	Tuesday 12			Wednesday 13			Thursday 14			Friday 15			Saturday 16			Sunday 17
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	snow shwrs	mod. snow	clear	clear	clear	clear	clear	clear	some clouds	snow shwrs	light snow	snow shwrs	snow shwrs	clear	some clouds	clear
km/h	S	SSE	SSW	W	W	WNW	W	W	W	WSW	W	W	WNW	W	NNW	NNE	NE	WNW
See all weather maps
cm	—	—	2	6	—	—	—	—	—	—	—	4	1	3	8	—	—	—
mm	0.2	—	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	7	7	6	-9	-5	-1	-1	-3	-2	-4	-7	-9	-11	-10	-10	-8	-5	-3
min °C	6	6	-5	-9	-5	-2	-2	-4	-4	-7	-9	-12	-11	-10	-12	-8	-7	-4
chill °C	2	2	-16	-22	-16	-13	-10	-14	-15	-17	-21	-25	-23	-21	-25	-18	-13	-4

Freezing level m	3950	3950	2950	1750	2400	2300	2900	2600	2550	2300	2150	1400	1700	1700	1200	2050	2500	1800
Cloud base (m)	9150	8950	2100	1850	1900	1800		3050	1900	1800	2650	1800	1800	1800	1800	1850	2400

	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:37	—	—
	—	—	8:22	—	—	8:23	—	—	8:24	—	—	8:25	—	—	8:27	—	—	8:28

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 7°C on Tue morning, min -9°C on Wed morning). Winds increasing (moderate winds from the SSE on Tue afternoon, severe gales from the WNW by Wed night).

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Sat night. Temperatures will be below freezing (max -3°C on Sun night, min -12°C on Fri night). Winds decreasing (gales from the W on Fri night, calm by Sun night).

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. 1 hour ago	5° C	Dry	Calm (0 kph at 0).
Bend 34 km E 1147m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 359).
Bend 34 km E 1164.6m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 119).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 1 hour ago	5° C	Clear	Calm (0 kph at 0).	11 km
Black Butte Ranch wx 36 km NW 1429m alt. 1 hour ago	9° C	Dry	Calm (3 kph at 217).
Bend 37 km SSE 1297m alt. 59 minutes ago	2° C	-	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 355).
Camp Sherman 39 km NNE 920.5m alt. 57 minutes ago	2° C	-	Calm (0 kph at 304).
Deschutes River Woods wx 40 km ESE 1185m alt. 1 hour ago	5° C	Dry	Calm (0 kph at 314).
Rainbow wx 41 km WSW 410m alt. 1 hour ago	16° C	Dry	Light winds from the ESE (18 kph at 105).

* 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.