California · Rock climbing · June Lake

Warm Up Boulder

Warm Up Boulder has 10 bouldering routes in California.

10 routes
V0 – V6
Bouldering

Is Warm Up Boulder open right now?

Alert in the area

The Forest Service lists 4 alerts for Inyo National Forest.

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

Best time to visit Warm Up Boulder

Best months: May–September. 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

    41° / 17°

  2. Feb

    41° / 18°

  3. Mar

    45° / 22°

  4. Apr

    51° / 27°

  5. May

    60° / 35°

  6. Jun

    70° / 42°

  7. Jul

    78° / 49°

  8. Aug

    77° / 47°

  9. Sep

    71° / 40°

  10. Oct

    61° / 30°

  11. Nov

    49° / 23°

  12. Dec

    41° / 17°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mammoth Lakes Rs, CA, 11.3 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Warm Up Boulder is a climbing area in the Mono Lake Ranger District of Inyo National Forest in California, managed by the Forest Service. It sits among a cluster of other climbing spots, so it works well as a stop on a day spent exploring the surrounding boulders and trails. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Mammoth Lakes show July highs around 78°F with lows near 49°F, while winter highs stay around 41°F with lows in the teens. The Warm Up Area, Big Reach Arete Boulder and Warm Up Ridge all lie about 0.1 mile away, and the Hartley Spur Trail is just as close. For an overnight stay, Hartley Springs Campground is about 1.8 miles off.

Routes (10)