Unknown Arete
Upper-grade boulder problem in the Unknown Boulder sector at Mount Herman.
- V5
- grade
- Bouldering Pads
- style
Is Unknown Arete open right now?
Alert in the area
The Forest Service lists 11 alerts for Pike and San Isabel National Forests.
FSR 286, Radical Hill, is closed due to washouts and unsafe conditions
Agency alert covering Pike and San Isabel National Forests · USFS · Pike and San Isabel National Forests
Interlaken Hotel Tree Hazards
Agency alert covering Pike and San Isabel National Forests · USFS · Pike and San Isabel National Forests
Sharpe Fire Update
Agency alert covering Pike and San Isabel National Forests · USFS · Pike and San Isabel National Forests
Turquoise Lake Road (County Road 4) Closure
Agency alert covering Pike and San Isabel National Forests · USFS · Pike and San Isabel National Forests
Waldo Canyon Burn Area Closure
Agency alert covering Pikes Peak Ranger District · Order 02-12-09-24-07 · USFS · Pikes Peak Ranger District
As of · Source: USFS · Pike and San Isabel National Forests. Agencies don't list every closure — check before you go.
Best time to visit Unknown Arete
Best months: May–June and 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
39° / 13°
5 wet
Feb
39° / 14°
6 wet
Mar
45° / 20°
7 wet
Apr
50° / 26°
8 wet
May
59° / 33°
10 wet
Jun
70° / 42°
11 wet
Jul
74° / 46°
16 wet
Aug
72° / 45°
16 wet
Sep
66° / 39°
9 wet
Oct
56° / 30°
6 wet
Nov
46° / 19°
5 wet
Dec
39° / 13°
5 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Ruxton Park, CO, 14.4 mi away at 9,060 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Located in the Unknown Boulder sector at Mount Herman, this climb represents the upper end of the V0+ to V5- range catalogued at the crag, where 24 routes have been established.
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