– Lat/Long: 44.10° N 121.77° W

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

Issued: 4 am Mon 25 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–3 Weather Summary A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 3°C on Wed night, min -11°C on Mon night). Winds decreasing (severe gales from the SW on Mon afternoon, light winds from the N by Tue morning).									Days 4–6 Weather Summary Moderate rain (total 10mm), heaviest on Thu night giving way to a moderate fall of snow, heaviest on Fri morning. Freeze-thaw conditions (max 4°C on Thu morning, min -7°C on Sat afternoon). Mainly strong winds.
	Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29			Saturday 30
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	snow shwrs	snow shwrs	light snow	snow shwrs	snow shwrs	light snow	clear	some clouds	some clouds	risk tstorm	light snow	mod. snow	light snow	clear	clear	some clouds	clear
km/h	SSW	SW	W	N	NNW	NNE	ENE	NE	E	E	NNE	NNW	NNW	W	WSW	SW	SW	W
See all weather maps
cm	—	1	3	1	2	2	2	—	—	—	—	5	7	2	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	2	8	—	—	—	—	—	—
max °C	1	-2	-7	-10	-9	-5	0	2	3	4	4	3	-1	-1	-2	-4	-6	-2
min °C	0	-4	-11	-10	-9	-8	-3	1	1	3	3	0	-1	-2	-6	-6	-7	-6
chill °C	-9	-16	-23	-17	-15	-15	-13	-7	-6	-3	-1	-8	-6	-10	-16	-14	-15	-14

Freezing level m	3100	2350	1600	1800	2100	1950	3200	3400	3550	3650	3650	3200	2850	2900	2200	2400	2400	1800
Cloud base (m)	8550	2250	1800	1850	1850	1800	1800	1900	1800		3500	1800	1850	1800	1800	1850	2650	1850

	5:31	—	—	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 night, min -11°C on Mon night). Winds decreasing (severe gales from the SW on Mon afternoon, light winds from the N by Tue morning).

South Sister Volcano Weather (Days 3-6):

Moderate rain (total 10mm), heaviest on Thu night giving way to a moderate fall of snow, heaviest on Fri morning. Freeze-thaw conditions (max 4°C on Thu morning, min -7°C on Sat afternoon). Mainly strong winds.

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	7° C	Dry	Calm (0 kph at 259).
Bend 34 km E 1147m alt. 1 hour ago	10° C	Dry	Calm (3 kph at 290).
Bend 34 km E 1164.6m alt. 52 minutes ago	12° C	Dry	Wind obs. (11 kph from 166 degs) was rejected.
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	5° C	Clear	Light winds from the S (7 kph at 180).	13 km
Black Butte Ranch wx 36 km NW 1429m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 297).
Bend 37 km SSE 1297m alt. 1 hour ago	1° C	-	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 2 hours ago	11° C	Dry	Calm (0 kph at 220).
Camp Sherman 39 km NNE 920.5m alt. 57 minutes ago	6° C	Dry	Calm (0 kph at 15).
Rainbow wx 41 km WSW 410m alt. 2 hours ago	11° C	Dry	Light winds from the SE (11 kph at 141).
Cloverdale wx 42 km NE 947m alt. 52 minutes ago	6° C	Dry	Calm (0 kph at 252).

* 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.