– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 4 pm Tue 23 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 23 Apr Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 5°C on Tue afternoon, min -6°C on Thu night). Winds increasing (light winds from the WSW on Tue afternoon, gales from the WSW by Thu night).											Days 5–7 Weather Summary A heavy fall of snow, heaviest during Mon morning. Temperatures will be below freezing (max -3°C on Sat afternoon, min -10°C on Mon morning). Winds increasing (light winds from the NW on Fri night, near gales from the WSW by Sun night).
	Tue 23		Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	cloudy	some clouds	some clouds	light snow	light snow	heavy snow	light snow	light snow	snow shwrs	cloudy	cloudy	light snow	snow shwrs	light snow	mod. snow
km/h	W	WSW	W	W	W	WSW	WSW	WSW	W	WNW	NW	W	WSW	WSW	WSW	WSW	W
Wave Height Map See all maps
cm	—	—	—	—	—	1.0	4	13	5	3	1.0	—	—	3	2.0	2.0	7
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	5	2	0	0	-1	-2	-3	-4	-6	-5	-5	-4	-3	-3	-6	-5	-7
min°C	5	0	0	-1	-2	-2	-3	-6	-6	-6	-5	-5	-3	-6	-6	-6	-9
chill°C	2	-6	-7	-8	-9	-9	-12	-17	-16	-14	-11	-10	-10	-15	-15	-16	-21

Freezing level (m)	3050	2700	2550	2400	2100	2100	1900	1650	1550	1550	1000	1850	2000	1700	1750	1750	1250
Cloud base (m)		9500	5600	3300	1800	1800	1800	1800	1800	1800	1800	1800	2200	1800	1800	1800	1800

	—	—	6:07	—	—	6:05	—	—	6:03	—	—	6:03	—	—	6:01	—	—
	—	8:00	—	—	8:01	—	—	8:04	—	—	8:05	—	—	8:06	—	—	8:07

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 5°C on Tue afternoon, min -6°C on Thu night). Winds increasing (light winds from the WSW on Tue afternoon, gales from the WSW by Thu night).

South Sister Volcano Weather (Days 3-6):

A heavy fall of snow, heaviest during Mon morning. Temperatures will be below freezing (max -3°C on Sat afternoon, min -10°C on Mon morning). Winds increasing (light winds from the NW on Fri night, near gales from the WSW by Sun night).

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 5 closest weather stations

Weather Station	Temp.	Weather	Wind
Sunriver wx 23 km SE 1684m alt. 3 hours ago	22° C	-	Calm (0 kph at 152).
Sisters wx 25 km NNE 1022m alt. 1 hour ago	21° C	Dry	Calm (2 kph at 269).
Sisters 32 km NE 964m alt. 1 hour ago	19° C	Dry	Calm (5 kph at 96).
Bend 34 km E 1147m alt. 39 minutes ago	18° C	Dry	Wind obs. (6 kph from 104 degs) was rejected.
Sunriver 34 km SE 1242m alt. 1 hour ago		Dry

* 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.