California · Rock climbing · Angwin

Mossy Rock

Mossy Rock in California has 15 bouldering routes across 10 difficulty grades.

15 routes
5.7 – 5.12a
Bouldering

Best time to visit Mossy 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° / 39°

    13 wet

  2. Feb

    56° / 40°

    11 wet

  3. Mar

    60° / 41°

    11 wet

  4. Apr

    66° / 42°

    8 wet

  5. May

    73° / 47°

    4 wet

  6. Jun

    80° / 51°

    1 wet

  7. Jul

    85° / 54°

    0 wet

  8. Aug

    84° / 54°

    0 wet

  9. Sep

    81° / 53°

    1 wet

  10. Oct

    72° / 50°

    4 wet

  11. Nov

    60° / 43°

    9 wet

  12. Dec

    53° / 39°

    13 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Angwin Pacific Union College, CA, 1 mi away at 1,715 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Mossy Rock is a climbing area in California's PUC Demonstration and Experimental Forest, managed by a non-governmental organization. It sits among a cluster of short trails, with Slackline Trail (Goat Track) about 0.2 miles away and Squirrel Trail Singletrack about 0.4 miles away. Late spring and early fall are the most comfortable times to visit. Typical averages from a nearby weather station show May highs around 73°F and October highs around 72°F, while July and August average in the mid-80s and winter brings the most wet days. Bell Canyon, another climbing area, is about 1.2 miles away. For paddling, Pope Creek is roughly 4.9 miles off and the Napa River about 6.6 miles.

Routes (15)

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