California · Rock climbing · Clayton

Stemple Slab

Mid-range climb in the South Lump sector of Wanna Get Away Crag.

5.10a
grade
Sport Bolted
style

Best time to visit Stemple Slab

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° / 42°

    11 wet

  2. Feb

    55° / 42°

    11 wet

  3. Mar

    58° / 43°

    10 wet

  4. Apr

    62° / 44°

    7 wet

  5. May

    68° / 49°

    4 wet

  6. Jun

    76° / 55°

    1 wet

  7. Jul

    82° / 62°

    1 wet

  8. Aug

    83° / 61°

    0 wet

  9. Sep

    80° / 60°

    1 wet

  10. Oct

    72° / 54°

    4 wet

  11. Nov

    60° / 46°

    7 wet

  12. Dec

    53° / 41°

    11 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Diablo Junction, CA, 3.1 mi away at 2,170 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

One of four routes catalogued in the South Lump sector of Wanna Get Away Crag, situated mid-range within the crag's 5.8 to 5.11a span.

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