Colorado · Rock climbing · Whitewater

Dirty Dozen Boulder Area

Dirty Dozen Boulder Area has 24 bouldering routes in Colorado.

24 routes
V0 – V4
Bouldering

Best time to visit Dirty Dozen Boulder Area

Best months: March–May and September–October. 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

    39° / 19°

    5 wet · 3 snow

  2. Feb

    46° / 25°

    5 wet · 2 snow

  3. Mar

    58° / 34°

    6 wet · 1 snow

  4. Apr

    65° / 40°

    7 wet

  5. May

    76° / 50°

    5 wet

  6. Jun

    88° / 59°

    3 wet

  7. Jul

    93° / 65°

    5 wet

  8. Aug

    90° / 63°

    6 wet

  9. Sep

    81° / 54°

    6 wet

  10. Oct

    67° / 41°

    5 wet

  11. Nov

    52° / 30°

    5 wet · 1 snow

  12. Dec

    40° / 20°

    4 wet · 3 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Grand Junction 6ese, CO, 9.3 mi away at 4,760 ft. The station sits about 900 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

The Dirty Dozen Boulder Area is a climbing area on Bureau of Land Management land in the Grand Junction Field Office, about 9 miles from the town of Grand Junction, Colorado. It sits among a cluster of other bouldering spots, so it works well as a stop in a day of exploring the surrounding crags. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station in Grand Junction show May highs around 76°F and October highs around 67°F, while July averages climb to about 93°F and winter brings highs near 40°F with a few snowy days each month. Blanc Block, Riddler Boulder and Grit Wall all lie about 0.1 mile away, and Area 51 Boulder Area is about 0.2 mile off. The Tabeguache Trail is about a mile away for a hike.

Routes (24)