– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 4 pm Fri 19 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 19 Apr Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Fri afternoon). Winds decreasing (severe gales from the WSW on Sat night, light winds from the W by Mon morning).											Days 5–7 Weather Summary A moderate fall of snow, heaviest on Thu morning. Freeze-thaw conditions (max 1°C on Mon night, min -7°C on Thu morning). Winds increasing (light winds from the SW on Mon afternoon, gales from the W by Thu morning).
	Fri 19		Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	some clouds	some clouds	clear	some clouds	some clouds	clear	some clouds	clear	cloudy	some clouds	some clouds	cloudy	some clouds	some clouds
km/h	SW	WSW	SW	SW	W	WNW	W	WNW	W	SW	SW	WSW	WSW	WSW	WSW	WSW	W
Wave Height Map See all maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	-4	-2	-3	-3	-3	-4	-4	-2	-1	0	1	0	-1	-1	-3	-5	-4
min°C	-5	-3	-3	-4	-5	-5	-5	-4	-2	-2	0	-1	-1	-3	-4	-6	-6
chill°C	-11	-10	-11	-14	-17	-14	-10	-11	-6	-6	-6	-7	-7	-12	-13	-16	-17

Freezing level (m)	2650	2100	2750	2700	1050	2350	2550	2250	2950	3100	3200	3100	2950	2600	2500	2400	1850
Cloud base (m)	7700			2950	1800	9000				6700	8000	6300	4700	8350	6550	3150	1800

	—	—	6:13	—	—	6:11	—	—	6:11	—	—	6:09	—	—	6:07	—	—
	7:55	—	—	7:58	—	—	7:59	—	—	—	8:00	—	—	8:00	—	—	8:01

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Mostly dry. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Fri afternoon). Winds decreasing (severe gales from the WSW on Sat night, light winds from the W by Mon morning).

South Sister Volcano Weather (Days 3-6):

A moderate fall of snow, heaviest on Thu morning. Freeze-thaw conditions (max 1°C on Mon night, min -7°C on Thu morning). Winds increasing (light winds from the SW on Mon afternoon, gales from the W by Thu 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind
Sunriver wx 23 km SE 1684m alt. 1 hour ago	7° C	-	Calm (0 kph at 152).
Sisters wx 25 km NNE 1022m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 177).
Sisters 32 km NE 964m alt. 45 minutes ago	11° C	Dry	Calm (5 kph at 50).
Sunriver 34 km SE 1242m alt. 59 minutes ago		Dry
Bend 34 km E 1164.6m alt. 1 hour ago	16° C	Dry	Calm (3 kph at 179).

* 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.