Washington · Rock climbing · Darrington

Fats Boulder

Fats Boulder in Washington has 8 bouldering routes across 5 grades.

8 routes
V0 – V4
Bouldering

Is Fats Boulder open right now?

Closure in the area

There's a closure order in Darrington Ranger District. It doesn't name Fats Boulder, so check the source for the area it covers (3 listed).

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

Best time to visit Fats Boulder

Best months: April–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

    40° / 30°

  2. Feb

    45° / 31°

  3. Mar

    51° / 34°

  4. Apr

    59° / 38°

  5. May

    67° / 44°

  6. Jun

    71° / 49°

  7. Jul

    78° / 53°

  8. Aug

    79° / 54°

  9. Sep

    72° / 47°

  10. Oct

    58° / 40°

  11. Nov

    46° / 35°

  12. Dec

    39° / 30°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Darrington Rs, WA, 16.3 mi away at 550 ft. The station sits about 1,200 ft lower than this place, so expect it a little cooler here. 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

Fats Boulder is a bouldering area in the Darrington Ranger District of Mt. Baker-Snoqualmie National Forest in Washington, managed by the Forest Service. It sits among several other climbing spots, with Lucid Boulders and Kuba Slab Cluster each about 0.1 mile away. The area has eight bouldering routes, all rated between V0 and V4 on the V scale. The easiest is Purple Onion at V0, and the hardest is Frostbite at V4. My Friend Fats and Herald of Rocks are also V4 and V3-4. The routes are all boulders, so there is no climbing on rock faces here. Summer is the most comfortable time to visit. Typical averages from a nearby weather station in Darrington run to highs around 78°F in July and 79°F in August, with lows in the low 50s. That station sits about 1,200 feet lower than the boulders, so temperatures at the climbing area run cooler. Sloan Peak is a hike about 1.7 miles away, and Bedal Campground is about 1.8 miles off. Round Lake Trail is about 2.2 miles away, and Pugh Creek, a canoeing spot, is about 3.1 miles away.

Routes (8)