– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 10 am Mon 11 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 11 May 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 3mm) at first, then becoming colder with a dusting of snow on Wed morning. Freeze-thaw conditions (max 13°C on Tue afternoon, min -4°C on Wed morning). Winds increasing (light winds from the SSE on Tue afternoon, near gales from the WNW by Wed night).									Days 4–6 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 4°C on Thu afternoon, min -6°C on Fri night). Winds decreasing (near gales from the WSW on Fri afternoon, light winds from the WNW by Sat afternoon).
	Monday 11			Tuesday 12			Wednesday 13			Thursday 14			Friday 15			Saturday 16
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	clear	some clouds	risk tstorm	light snow	cloudy	some clouds	clear	clear	clear	some clouds	some clouds	snow shwrs	cloudy	some clouds	some clouds
km/h	SW	WSW	SSW	S	SSE	S	W	WNW	WNW	NW	W	W	WSW	WSW	WNW	NW	WNW	NW
See all weather maps
cm	—	—	—	—	—	—	2	—	—	—	—	—	—	—	1	—	—	—
mm	—	—	0.2	—	—	3	—	—	—	—	—	—	—	—	—	—	—	—
max °C	9	12	10	12	13	9	-1	-1	-1	2	4	2	1	0	-5	-4	-2	-3
min °C	7	11	9	10	12	3	-4	-3	-2	0	3	0	0	-2	-6	-5	-3	-5
chill °C	4	9	6	8	11	-1	-14	-12	-11	-8	-2	-6	-7	-12	-14	-13	-9	-14

Freezing level m	3750	4050	4100	4000	4050	3400	1850	2200	1400	2900	3000	2700	2550	2150	1400	2000	2200	1200
Cloud base (m)	9400	9050		9200	4800	1850	1800	1800	1800			5250	2350	2150	1800	1800	2550	1800

	5:45	—	—	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—
	—	—	8:21	—	—	8:22	—	—	8:23	—	—	8:24	—	—	8:25	—	—	8:27

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Light rain (total 3mm) at first, then becoming colder with a dusting of snow on Wed morning. Freeze-thaw conditions (max 13°C on Tue afternoon, min -4°C on Wed morning). Winds increasing (light winds from the SSE on Tue afternoon, near gales from the WNW by Wed night).

South Sister Volcano Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 4°C on Thu afternoon, min -6°C on Fri night). Winds decreasing (near gales from the WSW on Fri afternoon, light winds from the WNW by Sat 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	24° C	Dry	Calm (2 kph at 24).
Bend 34 km E 1147m alt. 2 hours ago	24° C	Dry	Calm (3 kph at 47).
Bend 34 km E 1164.6m alt. 1 hour ago	26° C	Dry	Calm (5 kph at 59).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 1 hour ago	23° C	Clear	Calm (0 kph at 0).	13 km
Black Butte Ranch wx 36 km NW 1429m alt. 53 minutes ago	19° C	Dry	Wind obs. (6 kph from 62 degs) was rejected.
Bend 37 km SSE 1297m alt. 54 minutes ago	26° C	Dry	Calm (5 kph at 92).
Bend 37 km ESE 1158m alt. 1 hour ago	25° C	Dry	Calm (2 kph at 336).
Camp Sherman 39 km NNE 920.5m alt. 41 minutes ago	25° C	Dry	Calm (0 kph at 333).
Deschutes River Woods wx 40 km ESE 1185m alt. 52 minutes ago	23° C	Dry	Calm (5 kph at 327).
Rainbow wx 41 km WSW 410m alt. 1 hour ago	19° C	Dry	Moderate winds from the SW (26 kph at 236).

* 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.