Washington · Rock climbing · Skykomish

CDC Boulder

CDC Boulder in Washington has 11 bouldering routes.

11 routes
V0 – V8-9
Bouldering

Is CDC Boulder open right now?

Closure in the area

There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name CDC Boulder, 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 CDC Boulder

Best months: July–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

    32° / 25°

    20 wet

  2. Feb

    35° / 26°

    17 wet

  3. Mar

    40° / 29°

    20 wet

  4. Apr

    46° / 33°

    19 wet

  5. May

    53° / 38°

    17 wet

  6. Jun

    60° / 43°

    14 wet

  7. Jul

    68° / 50°

    8 wet

  8. Aug

    69° / 51°

    7 wet

  9. Sep

    63° / 47°

    10 wet

  10. Oct

    49° / 38°

    16 wet

  11. Nov

    38° / 30°

    19 wet

  12. Dec

    32° / 24°

    20 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Stampede Pass, WA, 34.9 mi away at 3,959 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

CDC Boulder is a bouldering area in the Henry M. Jackson Wilderness, within the Skykomish Ranger District of Mt. Baker-Snoqualmie National Forest in Washington. The Forest Service manages the land, and the area sits inside designated wilderness. The climbing here is all bouldering, with 11 routes spread across the V0 to V8-9 range. The easiest is Anti-Faxx at V0, and the hardest is Quarantine Direct at V8-9. Other routes include T-Virus at V6 and Wingardium Leviosa at V7. Summer is the most comfortable time to visit. Typical averages from the Stampede Pass weather station, about 35 miles away, show July and August highs near 68 to 69°F with only seven or eight wet days a month, while winter months bring highs around freezing and rain on 20 days a month. The Semantics and Top Sail climbing areas are each about 0.1 mile away. The Iron Goat Trail is about 1.4 miles off, and the Grace Lakes Cat Track for cross-country skiing is about 1.7 miles away.

Routes (11)