Unknown 12
One of 12 problems at Coldstream Canyon River Boulder II.
- V2-3
- grade
- Bouldering Pads
- style
Is Unknown 12 open right now?
Alert in the area
The Forest Service lists 2 alerts for Tahoe National Forest.
Stage 1 Fire Restrictions
Agency alert covering Tahoe National Forest · Order 17-26-25 · USFS · Tahoe National Forest
Camping and Campfire Restrictions-Truckee and Sierraville Districts
Agency alert covering Tahoe National Forest · Order 17-25-05 · USFS · Tahoe National Forest
As of · Source: USFS · Tahoe National Forest. Agencies don't list every closure — check before you go.
Best time to visit Unknown 12
Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
41° / 17°
11 wet
Feb
43° / 18°
10 wet
Mar
48° / 22°
10 wet
Apr
53° / 26°
7 wet
May
63° / 33°
6 wet
Jun
73° / 38°
3 wet
Jul
82° / 44°
2 wet
Aug
81° / 42°
2 wet
Sep
74° / 36°
2 wet
Oct
63° / 29°
4 wet
Nov
49° / 23°
7 wet
Dec
39° / 17°
10 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Donner Mem Sp, CA, 0.6 mi away at 5,937 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
One of 12 boulder problems catalogued at Coldstream Canyon River Boulder II, situated in the lower-middle range of the crag's V0-1 to V6-7 span.