– Lat/Long: 44.10° N 121.77° W

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

Issued: 10 pm Mon 11 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 Tue night followed by colder weather and light fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 7°C on Mon night, min -10°C on Wed morning). Winds increasing (moderate winds from the SSE on Tue afternoon, severe gales from the WSW by Wed morning).										Days 5–7 Weather Summary A dusting of new snow. Temperatures will be below freezing (max -1°C on Thu night, min -10°C on Fri night). Winds decreasing (severe gales from the W on Thu night, calm by Sun afternoon).
		Tuesday 12			Wednesday 13			Thursday 14			Friday 15			Saturday 16			Sunday 17
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	some clouds	snow shwrs	mod. snow	some clouds	clear	clear	some clouds	clear	clear	some clouds	snow shwrs	some clouds	some clouds	clear	clear	clear	clear
km/h	SW	S	SSE	SSW	W	W	WNW	W	W	W	W	W	WNW	NW	WNW	NNW	N	WNW	NNW
See all weather maps
cm	—	—	—	3	7	—	—	—	—	—	—	—	3	—	—	—	—	—	—
mm	0.1	—	—	3	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	7	7	7	6	-10	-2	0	-1	-3	-1	-3	-6	-8	-9	-8	-6	-4	-2	-1
min °C	7	6	6	-6	-10	-4	-2	-2	-4	-3	-5	-8	-10	-10	-8	-7	-5	-3	-1
chill °C	2	2	2	-17	-24	-14	-12	-10	-14	-14	-15	-20	-23	-22	-15	-16	-14	-7	-7

Freezing level m	4100	4000	4000	2900	1700	2600	1500	2800	2700	2800	2450	2300	1450	1800	2050	1500	2500	2850	2400
Cloud base (m)	8600	9200	8750	2550	1850	1850	1900	1850	2700	1800	8500	2700	1800	1850	2100	1800	1850	2800	1850

	—	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 at first with light rain (total 3mm) on Tue night followed by colder weather and light fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 7°C on Mon night, min -10°C on Wed morning). Winds increasing (moderate winds from the SSE on Tue afternoon, severe gales from the WSW by Wed morning).

South Sister Volcano Weather (Days 3-6):

A dusting of new snow. Temperatures will be below freezing (max -1°C on Thu night, min -10°C on Fri night). Winds decreasing (severe gales from the W on Thu night, calm by Sun afternoon).

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	7° C	Dry	Calm (0 kph at 0).
Bend 34 km E 1147m alt. 1 hour ago	9° C	Dry	Calm (2 kph at 349).
Bend 34 km E 1164.6m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 59).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 1 hour ago	9° C	-	Wind obs. (9 kph from 10 degs) was rejected.	16 km Low: few
Black Butte Ranch wx 36 km NW 1429m alt. 46 minutes ago	9° C	Dry	Calm (0 kph at 197).
Bend 37 km SSE 1297m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 329).
Camp Sherman 39 km NNE 920.5m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 304).
Deschutes River Woods wx 40 km ESE 1185m alt. 1 hour ago	7° C	Dry	Calm (0 kph at —).
Rainbow wx 41 km WSW 410m alt. 1 hour ago	14° C	Dry	Light winds from the ENE (18 kph at 77).

* 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.