Massachusetts · Rock climbing · Dedham

Warm-Up Boulder

12 routes
V0 – V2
Bouldering
Apr–Oct
best months

Warm-Up Boulder is a bouldering area in Massachusetts, about 1.2 miles from the town of Birds Hill. It sits among a cluster of climbing spots, with Peninsula Overhang and Wilson Mountain Reservation each about 0.1 mile away and Overshadowed about 0.2 mile off. The area is a compact, close-together set of boulders, and the routes here are all bouldering grades from V0- to V2, with the hardest being One Shot at V2. The most comfortable months for a visit are late spring and early fall. Typical averages from a nearby weather station in Jamaica Plain run from highs around 69°F in May to about 75°F in September, with July the warmest at about 85°F. The routes are all bouldering, and the grade range is V0- to V2. Trolley Dyno is the easiest at V0-, and One Shot is the hardest at V2. Tram and the Trolley, a V0+ boulder, was first ascended by Teddy Johnson, and Nick Came Back With a Whole Catastrophe, a V1, was first ascended by Nick Cavallo. Other climbing is close by at Needham Town Forest, about 2.7 miles away. Mountain bikers can head to Powerglide, about 2.2 miles off, or the Bay Colony Rail Trail, about 3.6 miles away.

  • Best time to go · Apr–Oct

    Best time to visit Warm-Up 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

      37° / 19°

    2. Feb

      40° / 21°

    3. Mar

      47° / 28°

    4. Apr

      59° / 38°

    5. May

      69° / 48°

    6. Jun

      79° / 58°

    7. Jul

      85° / 64°

    8. Aug

      83° / 63°

    9. Sep

      75° / 55°

    10. Oct

      64° / 43°

    11. Nov

      53° / 34°

    12. Dec

      42° / 26°

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Jamaica Plain, MA, 4.9 mi away at 95 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (12)