Washington · Bouldering · Skykomish

Grotto Dyno

The hardest climb catalogued at The Grotto.

V7
grade
Bouldering Pads
style

Is Grotto Dyno open right now?

Closure in the area

There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name Grotto Dyno, so check the source for the area it covers (2 listed).

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

Best time to visit Grotto Dyno

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

    28° / 17°

    17 wet

  2. Feb

    34° / 18°

    14 wet

  3. Mar

    41° / 23°

    14 wet

  4. Apr

    50° / 29°

    10 wet

  5. May

    60° / 36°

    10 wet

  6. Jun

    66° / 43°

    9 wet

  7. Jul

    76° / 47°

    6 wet

  8. Aug

    76° / 46°

    6 wet

  9. Sep

    67° / 40°

    8 wet

  10. Oct

    51° / 32°

    14 wet

  11. Nov

    34° / 24°

    17 wet

  12. Dec

    27° / 17°

    18 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Holden Village, WA, 34.5 mi away at 3,218 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Closures we've recorded since August 2026

  • Campfire Ban in Effect Forest-wide

    Mt. Baker-Snoqualmie National Forest · Order dated July 21, 2026; seen Aug 23, 2026 → lifted Sep 15, 2026 · Forest Service

The Grotto has 8 climbs catalogued across a V0 to V7 range, with this route representing the upper end of the crag's difficulty spectrum.