California · Rock climbing · Running Springs

Lower Dinosaur Rock

Lower Dinosaur Rock in California has 1 route with alpine no fixed protection.

1 route
5.10b
Alpine

Is Lower Dinosaur Rock open right now?

Closure in the area

There's a closure order in Mountaintop Ranger District. It doesn't name Lower Dinosaur Rock, so check the source for the area it covers.

As of · Source: USFS · Mountaintop Ranger District. Agencies don't list every closure — check before you go.

Best time to visit Lower Dinosaur Rock

Best months: May–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

    46° / 24°

    6 wet

  2. Feb

    46° / 24°

    6 wet

  3. Mar

    51° / 27°

    6 wet

  4. Apr

    57° / 31°

    4 wet

  5. May

    66° / 37°

    2 wet

  6. Jun

    75° / 43°

    1 wet

  7. Jul

    80° / 50°

    2 wet

  8. Aug

    79° / 49°

    3 wet

  9. Sep

    73° / 44°

    2 wet

  10. Oct

    63° / 35°

    2 wet

  11. Nov

    53° / 28°

    3 wet

  12. Dec

    46° / 24°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Big Bear Lake, CA, 9.4 mi away at 6,753 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Lower Dinosaur Rock is a climbing area in California's San Bernardino National Forest, within the Mountaintop Ranger District. The Forest Service manages the land, and the climbing sits among a cluster of routes, hikes and lakes in the district's high-country terrain. Summer and early fall are the warmest times to plan a visit. Typical averages from the Big Bear Lake weather station, about 9 miles away, show July highs near 80°F with lows around 50°F, while September cools to highs in the low 70s. Winter is much colder, with highs in the mid-40s and lows in the mid-20s. The area's single listed route is "The Three Best Holds Your Hands Ever Had," an alpine climb rated 5.10b. It sits among the Lower Dinosaur Rock - N. Face and W. Face climbing areas, each about 0.1 mile away. Hikers can reach the Mill Peak Spur and Dry Creek Trail within half a mile. Arrowbear Lake offers fishing about 0.6 mile off.

Routes (1)