South Sister
Location: Deschutes County, OR, US
Elevation: 10,357 feet
0 recorded summits
Current Conditions
Weather: Overcast
Temperature: 33°F
Wind: 7 mph
Humidity: 35%
7-Day Summit Window
Best day: 2026-04-08 (score: 72/100)
- 2026-04-05: Good (69/100) - Overcast, calm winds, cold
- 2026-04-06: Good (69/100) - Overcast, calm winds, cold
- 2026-04-07: Marginal (55/100) - Clear skies, strong winds, cold
- 2026-04-08: Good (72/100) - Clear skies, breezy, cold
- 2026-04-09: Marginal (55/100) - Chance of precipitation, breezy, cool
- 2026-04-10: Good (55/100) - Overcast, calm winds, cold
- 2026-04-11: Poor (35/100) - Chance of snow, breezy, cold
Avalanche Forecast - Central Cascades
- Alpine: Moderate
- Treeline: Moderate
- Below Treeline: Moderate
<p>On Sunday, avalanches will be possible in wet snow on steep, sunny slopes. Avoid this type of terrain as the day warms up and the snow becomes slushy. Also, avoid traveling near or below cornices. </p>
Air Quality
AQI: 15 (Good)
Snow Conditions
Trend: stable
- Three Creeks Meadow: 0" depth, 0" SWE
- Mckenzie: 9" depth, 1.5" SWE
- Roaring River: 1" depth, 0.8" SWE
Stream Flow
- M F TUMALO CREEK ABV PROWELL SPRINGS, NR BEND, OR: low (-999999 cfs)
- M F TUMALO CREEK BLW PROWELL SPRINGS, NR BEND, OR: high (3.94 cfs)
- BRIDGE CREEK BELOW INTAKE, NEAR BEND, OR: flood (33 cfs)
Public Lands
- Willamette National Forest (NF, USFS)