California · Rock climbing · Clayton

Butt Rock

Butt Rock in California has 5 sport climbing routes across 4 difficulty grades.

Butt RockPhoto: Dan Harrelson, CC BY 2.0 (via Flickr)
5 routes
5.2 – 5.10c/d
Sport

Best time to visit Butt Rock

Best months: February–November. 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

    54° / 42°

    11 wet

  2. Feb

    55° / 42°

    11 wet

  3. Mar

    58° / 43°

    10 wet

  4. Apr

    62° / 44°

    7 wet

  5. May

    68° / 49°

    4 wet

  6. Jun

    76° / 55°

    1 wet

  7. Jul

    82° / 62°

    1 wet

  8. Aug

    83° / 61°

    0 wet

  9. Sep

    80° / 60°

    1 wet

  10. Oct

    72° / 54°

    4 wet

  11. Nov

    60° / 46°

    7 wet

  12. Dec

    53° / 41°

    11 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Diablo Junction, CA, 2.2 mi away at 2,170 ft. The station sits about 600 ft higher than this place, so expect it a little warmer here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Butt Rock is a climbing area in Mount Diablo State Park in California, managed by State Park and Recreation. It sits among a cluster of climbing areas and trails, with Middle Tier, Upper Tier and Lower Tier all about 0.1 mile away. Late spring and early fall are the most comfortable times to visit. Typical averages from a nearby weather station at Mt Diablo Junction show May highs around 68°F and October highs around 72°F, while July and August climb to the low 80s and winter brings about 11 wet days a month. Madrone Canyon Trail and Camp Force Trail are both within a third of a mile, and Devil's Slide Trail is about half a mile off. For a change of pace, Walnut Creek offers canoeing roughly 10 miles away.

Routes (5)

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Middle TierPhoto: Dan Harrelson, CC BY 2.0 (via Flickr)

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