– Lat/Long: 44.10° N 121.77° W

South Sister Volcano
Weather Forecast, United States
Issued: 4 pm Sat 29 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 29 Aug Local Time

Updates in:

hr min s

Update imminent

3 South Sister Volcano Elevations: 3 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 1°C on Sat afternoon). Winds decreasing (strong winds from the NW on Sat night, calm by Sun afternoon).											Days 5–7 Weather Summary Drizzle on Tue afternoon followed by colder weather and a heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -4°C on Wed morning). Winds increasing (light winds from the S on Tue afternoon, gales from the SW by Wed afternoon).
	Sat 29		Sunday 30			Monday 31			Tuesday 1			Wednesday 2			Thursday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	risk tstorm	rain shwrs	cloudy	light snow	heavy snow	mod. snow	light snow	snow shwrs
Cloud base (m)		9250	9600					8400	8450	2550	1950	2450	2050	1800	1800	1850	2800
km/h	W	NW	WNW	SE	SSW	SSW	NNE	ESE	SSE	SSW	SW	SW	SW	WSW	SW	SW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	3	15	7	2	1
mm	—	—	—	—	—	—	—	—	—	1.2	0.1	—	—	—	—	—	—
max °C	1	3	4	5	7	7	8	7	4	2	2	-3	-2	-3	-4	-3	-1
min °C	1	2	4	4	6	7	7	5	2	2	-2	-4	-3	-3	-4	-3	-2
chill °C	-5	-4	0	4	2	3	5	2	-1	-1	-11	-12	-12	-14	-14	-11	-10

Freezing level m	3350	3650	3900	4000	4200	4150	4200	3950	3500	3450	3100	2700	2750	2600	2450	2750	2900

	—	—	6:26	—	—	6:28	—	—	6:28	—	—	6:30	—	—	6:31	—	—
	7:49	—	—	7:46	—	—	7:45	—	—	7:43	—	—	7:40	—	—	7:39	—

South Sister Volcano Weather (Days 0-3):

The weather forecast for South Sister Volcano is: Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 1°C on Sat afternoon). Winds decreasing (strong winds from the NW on Sat night, calm by Sun afternoon).

South Sister Volcano Weather (Days 3-6):

Drizzle on Tue afternoon followed by colder weather and a heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -4°C on Wed morning). Winds increasing (light winds from the S on Tue afternoon, gales from the SW by Wed afternoon).

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	17°C	Dry	Calm (3 kph at 326).
Bend 34 km E 1147m alt. 1 hour ago	17°C	Dry	Wind obs. (10 kph from 50 degs) was rejected.
Bend 34 km E 1164.6m alt. 40 minutes ago	19°C	Dry	Light winds from the N (8 kph at 3).
Sunriver Airport (Oregon) 35 km SE 1266m alt. 1 hour ago	18°C	Clear	Light winds from the W (13 kph at 270).	14 km
Black Butte Ranch wx 36 km NW 1429m alt. 3 hours ago	11°C	Dry	Light winds from the WNW (10 kph at 285).
Bend 37 km SSE 1297m alt. 45 minutes ago	15°C	Dry	Calm (2 kph at 313).
Deschutes River Woods wx 40 km ESE 1185m alt. 1 hour ago	17°C	Dry	Calm (5 kph at 353).
Rainbow wx 41 km WSW 410m alt. 53 minutes ago	13°C	Dry	Light winds from the WNW (13 kph at 299).
Cloverdale wx 42 km NE 947m alt. 1 hour ago	18°C	Dry	Calm (5 kph at 246).
La Pine 43 km SSE 1298m alt. 54 minutes ago	16°C	Dry	Calm (3 kph at 309).

* 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.