Colorado · Rock climbing · Bellvue

Stematron Boulder

Stematron Boulder in Colorado has 5 bouldering routes across 5 grades.

5 routes
V4 – V12
Bouldering

Best time to visit Stematron Boulder

Best months: June–August. 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

    29° / 3°

    11 wet

  2. Feb

    30° / 5°

    11 wet

  3. Mar

    38° / 12°

    10 wet

  4. Apr

    45° / 20°

    10 wet

  5. May

    55° / 27°

    9 wet

  6. Jun

    67° / 33°

    8 wet

  7. Jul

    73° / 40°

    10 wet

  8. Aug

    72° / 38°

    11 wet

  9. Sep

    64° / 31°

    9 wet

  10. Oct

    51° / 22°

    8 wet

  11. Nov

    38° / 12°

    10 wet

  12. Dec

    30° / 4°

    12 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Gould 4se Sfsp, CO, 12.2 mi away at 9,000 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Stematron Boulder is a bouldering spot in Colorado's Canyon Lakes Ranger District, part of the Arapaho and Roosevelt National Forests, on land managed by the Forest Service. It sits in a tight cluster of problems, with several other boulders just steps away. Summer is the most comfortable time to climb here. Typical averages from a nearby weather station at Gould, at roughly similar elevation, run to highs of about 73°F in July with lows near 40°F, while winter highs stay around 30°F with single-digit lows. Cronus Bloc, Odyssey Bloc and Grotto Bloc all lie about 0.1 mile away, making it easy to link several areas in one session. The Camp Lake hike starts about 0.3 mile off, and Tunnel Campground, about 1.8 miles away, is the closest place to camp.