Massachusetts · Rock climbing · Colrain

Big 45

8 routes
V3-4 – V12-13
Bouldering
May–Oct
best months

Blocked at last check

Weather is adverse · OpenWeather · checked 16 h ago

Big 45 is a bouldering area in western Massachusetts, about 2.5 miles from the town of North Heath. It sits among several climbing areas in the region, with Charlemont just 0.1 mile away and Upper Field about 0.4 mile off. The bouldering here runs the full range from moderate to extremely challenging. The area has eight boulder routes, with grades from V3-4 up to V12-13. Typical climbs include Okonsha at V3-4 and Phonies! at V8, with Charlatan at V12-13 standing out as the hardest. Most of the routes were first ascended by Kai Webler, and several were climbed with him by Nick Orange. Summer is the most comfortable time to go. Typical averages from a nearby weather station in Rowe put July and August highs around 75°F with lows in the mid-50s. Winters are cold, with January highs near 29°F. Nearby, the Deerfield River offers river fishing about 8.8 miles away, and Harriman Reservoir is a lake fishing option at about 9 miles. In Vermont, Old Judd Road is a cross-country ski trail roughly 8 miles off, and the Steeplebush Trail is a hike about 7.5 miles away.

  • Best time to go · May–Oct

    Best time to visit Big 45

    Best months: May–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

      29° / 11°

    2. Feb

      31° / 13°

    3. Mar

      39° / 20°

    4. Apr

      51° / 32°

    5. May

      63° / 42°

    6. Jun

      70° / 52°

    7. Jul

      75° / 57°

    8. Aug

      75° / 55°

    9. Sep

      68° / 48°

    10. Oct

      56° / 36°

    11. Nov

      44° / 28°

    12. Dec

      34° / 19°

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Rowe 3ne, MA, 4.5 mi away at 1,735 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (8)