Utah · Rock climbing · Sandy

The Clamshell

Clamshell, Utah climbing area with 5 sport routes.

5 routes
5.8+ – 5.10a
Sport

Is Clamshell, The open right now?

No closures listed

The Forest Service lists no closures for Uinta-Wasatch-Cache National Forest.

As of · Source: USFS · Uinta-Wasatch-Cache National Forest. Agencies don't list every closure — check before you go.

Best time to visit The Clamshell

Best months: June–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.

  1. Jan

    31° / 15°

    14 wet

  2. Feb

    31° / 15°

    13 wet

  3. Mar

    37° / 20°

    13 wet

  4. Apr

    42° / 25°

    12 wet

  5. May

    53° / 33°

    10 wet

  6. Jun

    64° / 42°

    7 wet

  7. Jul

    73° / 50°

    7 wet

  8. Aug

    71° / 49°

    9 wet

  9. Sep

    62° / 41°

    9 wet

  10. Oct

    49° / 31°

    9 wet

  11. Nov

    37° / 21°

    11 wet

  12. Dec

    30° / 15°

    14 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Alta, UT, 0.5 mi away at 8,710 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

The Clamshell is a climbing area in the Salt Lake Ranger District of the Uinta-Wasatch-Cache National Forest in Utah, about 0.5 miles from the town of Alta. It sits at roughly the same elevation as the Alta weather station, which makes its typical averages a fair guide to conditions here. Summer is the most comfortable time to visit. July typically brings highs around 73°F and lows near 50°F, with about seven wet days in the month. Winters are cold, with January highs averaging about 31°F and lows around 15°F. Goatland Wall and Melting Mud West are both climbing areas about 0.1 mile away. The Cardiff Pass Trail starts about 0.2 mile off, and Albion Basin campground is about 2.1 miles away.

Routes (5)