– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 4 pm Mon 25 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 25 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 3°C on Wed afternoon, min -11°C on Mon night). Winds increasing (light winds from the NNE on Tue afternoon, gales from the NE by Tue night).											Days 5–7 Weather Summary A moderate fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 2°C on Thu afternoon, min -5°C on Sat afternoon). Winds increasing (light winds from the NE on Thu afternoon, strong winds from the NNW by Fri morning).
	Mon 25		Tuesday 26			Wednesday 27			Thursday 28			Friday 29			Saturday 30
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	snow shwrs	some clouds	light snow	light snow	cloudy	clear	snow shwrs	snow shwrs	snow shwrs	snow shwrs	light snow	light snow	clear	some clouds	some clouds	clear
km/h	SW	W	N	N	NNE	NE	ENE	E	ENE	NE	NNW	NNW	NW	W	SW	SSW	WSW
See all weather maps
cm	—	3	—	2	4	—	—	1	1	5	7	2	4	—	—	—	—
mm	—	—	—	—	—	—	—	0.6	—	—	—	—	—	—	—	—	—
max °C	-2	-7	-9	-8	-2	1	3	3	1	2	2	-1	-1	0	-2	-4	-4
min °C	-2	-11	-10	-9	-7	1	2	1	1	2	0	-2	-2	-2	-4	-5	-5
chill °C	-11	-20	-16	-13	-12	-7	-4	-7	-5	-3	-5	-10	-10	-9	-12	-12	-12

Freezing level m	2700	1550	1850	2100	2200	3250	3400	3400	3350	3400	3200	2650	3050	2800	2550	2700	1850
Cloud base (m)	2150	1800	1800	1850	1800	1800	4450		4850	2900	1850	1800	1800	1800	1900	2350	1950

	—	—	5:30	—	—	5:30	—	—	5:28	—	—	5:28	—	—	5:28	—	—
	—	8:36	—	—	8:37	—	—	8:37	—	—	8:38	—	—	8:39	—	—	8:40

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 3°C on Wed afternoon, min -11°C on Mon night). Winds increasing (light winds from the NNE on Tue afternoon, gales from the NE by Tue night).

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 2°C on Thu afternoon, min -5°C on Sat afternoon). Winds increasing (light winds from the NE on Thu afternoon, strong winds from the NNW by Fri 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. 1 hour ago	10° C	Dry	Calm (3 kph at 272).
Bend 34 km E 1147m alt. 2 hours ago	13° C	Dry	Calm (3 kph at 316).
Bend 34 km E 1164.6m alt. 2 hours ago	13° C	Dry	Light winds from the SW (11 kph at 236).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 1 hour ago	10° C	Dry and cloudy.	Moderate winds from the SW (28 kph at 230).	13 km Low: broken Mid: overcast
Black Butte Ranch wx 36 km NW 1429m alt. 1 hour ago	4° C	Dry	Calm (5 kph at 294).
Bend 37 km SSE 1297m alt. 52 minutes ago	9° C	Dry	Calm (2 kph at 0).
Bend 37 km ESE 1158m alt. 1 hour ago	13° C	Dry	Calm (5 kph at 256).
Camp Sherman 39 km NNE 920.5m alt. 51 minutes ago	10° C	Dry	Calm (3 kph at 155).
Rainbow wx 41 km WSW 410m alt. 35 minutes ago	4° C	Dry	Fresh winds from the SSW (32 kph at 198).
Cloverdale wx 42 km NE 947m alt. 3 hours ago	13° C	Dry	Wind obs. (8 kph from 169 degs) was rejected.

* 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.