Washington · Rock climbing · Mount Vernon

Big Rock

Big Rock in Washington has 13 climbing routes across 8 difficulty grades.

13 routes
5.6 – 5.10b/c
Sport · Trad · Mixed

Best time to visit Big Rock

Best months: June–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

    46° / 35°

    20 wet

  2. Feb

    49° / 35°

    18 wet

  3. Mar

    53° / 38°

    20 wet

  4. Apr

    58° / 41°

    17 wet

  5. May

    65° / 47°

    14 wet

  6. Jun

    69° / 51°

    12 wet

  7. Jul

    74° / 53°

    8 wet

  8. Aug

    75° / 53°

    7 wet

  9. Sep

    70° / 49°

    12 wet

  10. Oct

    60° / 43°

    18 wet

  11. Nov

    50° / 39°

    21 wet

  12. Dec

    45° / 34°

    21 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Sedro-Woolley, WA, 4.9 mi away at 60 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Big Rock is a climbing area in Hoag Memorial Park (Big Rock) in Washington, on county land. It sits within the park's own named section, and the surrounding area is managed by the county. Summer is the most comfortable time to visit. Typical averages from a nearby weather station in Sedro-Woolley show July and August highs around 74 to 75°F with only seven or eight wet days a month, while winter months bring highs in the mid-40s and rain on 20 or more days. Several trails lie close by. The Kulshan Trail is about 1.9 miles away and the Trumpeter Trail about 2.1 miles. The Skagit Valley Playfields Trail is about 2.3 miles off. For more climbing, Coal Mountain Boulders is about 7.3 miles away.

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