California · Bouldering · Sonora

Grandma Death

Among the hardest climbs at Upper Arboretum's Cellar Door area.

V10
grade
Bouldering Pads
style

Best time to visit Grandma Death

Best months: October–June. 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

    56° / 33°

    10 wet

  2. Feb

    58° / 34°

    10 wet

  3. Mar

    62° / 37°

    10 wet

  4. Apr

    67° / 40°

    6 wet

  5. May

    76° / 45°

    4 wet

  6. Jun

    85° / 51°

    1 wet

  7. Jul

    93° / 57°

    0 wet

  8. Aug

    92° / 56°

    0 wet

  9. Sep

    87° / 51°

    1 wet

  10. Oct

    76° / 43°

    4 wet

  11. Nov

    63° / 36°

    7 wet

  12. Dec

    55° / 32°

    10 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Sonora, CA, 4.6 mi away at 1,675 ft. The station sits about 600 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Located in the Cellar Door area of Upper Arboretum, this climb ranks among the most challenging routes catalogued at the crag, where 17 climbs span from V0 to V13.

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