California · Rock climbing · Pearblossom

Williamson Rock

Williamson Rock in California has 59 sport climbing routes across 18 difficulty grades.

Williamson RockPhoto: RuggyBearLA, CC BY 2.0 (via Flickr)
59 routes
5.6 – 5.12d
Sport

Is Williamson Rock open right now?

Alert in the area

The Forest Service lists 7 alerts for Angeles National Forest.

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

Best time to visit Williamson Rock

Best months: April–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

    48° / 26°

    5 wet

  2. Feb

    48° / 25°

    8 wet

  3. Mar

    54° / 29°

    6 wet

  4. Apr

    60° / 32°

    4 wet

  5. May

    69° / 39°

    2 wet

  6. Jun

    78° / 44°

    1 wet

  7. Jul

    83° / 53°

    2 wet

  8. Aug

    82° / 51°

    2 wet

  9. Sep

    75° / 46°

    2 wet

  10. Oct

    64° / 37°

    3 wet

  11. Nov

    55° / 29°

    4 wet

  12. Dec

    47° / 25°

    5 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Wrightwood, CA, 13.8 mi away at 6,000 ft. The station sits about 700 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Closures we've recorded since August 2026

  • Williamson Rock Area and Trail Closure

    Angeles National Forest · Order dated June 14, 2024; seen Aug 23, 2026, no lift recorded · Forest Service

Williamson Rock is a climbing area in the San Gabriel Mountains National Monument Ranger District of Angeles National Forest in California, managed by the Forest Service. It sits among several other climbing spots, with Ramblin' Wall, Freezer Burn Wall and Eagles Roost Buttress all about 0.1 mile away. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station in Wrightwood show May highs around 69°F and October highs around 64°F, while winter highs sit in the upper 40s. For a longer outing, the South Fork Trail lies about 1.7 miles away, and Buckhorn and Cooper Canyon campgrounds are both within about 2.3 miles.

Routes (59)

Ego Buttress(1)

Ego Maniac5.10b

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