– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 10 pm Sat 09 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 09 May Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 15°C on Tue afternoon, min 5°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun afternoon, light winds from the SW by Mon morning).										Days 5–7 Weather Summary Moderate rain (total 14mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 12°C on Tue night, min -2°C on Thu afternoon). Mainly strong winds.
		Sunday 10			Monday 11			Tuesday 12			Wednesday 13			Thursday 14			Friday 15
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	cloudy	some clouds	clear	clear	clear	clear	rain shwrs	clear	some clouds	light rain	rain shwrs	rain shwrs	some clouds	light snow	light snow	clear	clear	some clouds
km/h	SW	SW	WSW	W	SSW	SW	SSW	S	S	SSW	S	SE	S	NW	WNW	NW	NNW	SSE	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	1	—	—	—
mm	—	—	—	—	—	—	—	0.1	—	—	0.1	10	3	—	—	—	—	—	—
max °C	9	8	8	6	9	12	10	13	15	12	12	11	6	1	-1	0	4	6	5
min °C	7	7	7	5	7	10	10	11	15	11	10	7	3	1	-2	-2	1	6	3
chill °C	3	3	2	1	5	8	8	9	14	8	7	5	0	-2	-10	-11	-6	5	-2

Freezing level m	3900	3700	3650	3850	3850	4000	4150	4200	4300	4250	3750	3750	3400	2700	2150	2500	3250	3250	3200
Cloud base (m)	9300	6100	6100		9450	9450	8350	9300	9400	6000	3050	2000	2350	1900	1850	1800	8000	9050	6100

	—	5:46	—	—	5:45	—	—	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—
	—	—	—	8:20	—	—	8:21	—	—	8:22	—	—	8:23	—	—	8:24	—	—	8:25

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Mostly dry. Very mild (max 15°C on Tue afternoon, min 5°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun afternoon, light winds from the SW by Mon morning).

South Sister Volcano Weather (Days 3-6):

Moderate rain (total 14mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 12°C on Tue night, min -2°C on Thu afternoon). Mainly strong winds.

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 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. 45 minutes ago	8° C	Dry	Calm (0 kph at 356).
Bend 34 km E 1164.6m alt. 48 minutes ago	13° C	Dry	Calm (0 kph at 107).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 2 hours ago	6° C	Clear	Calm (0 kph at 0).	16 km
Black Butte Ranch wx 36 km NW 1429m alt. 4 hours ago	6° C	Dry	Calm (0 kph at 308).
Bend 37 km SSE 1297m alt. 2 hours ago	3° C	Dry	Calm (0 kph at 0).
Bend 37 km ESE 1158m alt. 59 minutes ago	9° C	Dry	Calm (0 kph at 322).
Camp Sherman 39 km NNE 920.5m alt. 59 minutes ago	5° C	Dry	Calm (0 kph at 211).
Deschutes River Woods wx 40 km ESE 1185m alt. 47 minutes ago	6° C	Dry	Calm (0 kph at —).
Rainbow wx 41 km WSW 410m alt. 3 hours ago	13° C	Dry	Wind obs. (18 kph from 232 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.