Massachusetts · Rock climbing · Milford

Atomic Boulder

10 routes
V0 – V7-8
Bouldering
Apr–Oct
best months

Atomic Boulder is a climbing area in a town forest in Massachusetts, managed by city land. It sits among a cluster of bouldering spots, with Hillside about 0.2 miles away and Entrance Boulder and Back Hillside each about 0.3 miles off. Late spring and early fall are the most comfortable times to visit. Typical averages from a nearby weather station in West Medway show May highs around 71°F and September highs around 76°F, while winter brings regular snow days from December through February. The Milford Byway mountain biking route is about 1.3 miles away, and the Mill River offers canoeing about 4.3 miles out. West Hill Park campground is roughly 5.9 miles away.

  • Best time to go · Apr–Oct

    Best time to visit Atomic 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

      38° / 17°

      9 wet · 6 snow

    2. Feb

      41° / 18°

      8 wet · 4 snow

    3. Mar

      48° / 25°

      11 wet · 3 snow

    4. Apr

      60° / 35°

      10 wet · 1 snow

    5. May

      71° / 46°

      10 wet

    6. Jun

      79° / 55°

      9 wet

    7. Jul

      84° / 61°

      9 wet

    8. Aug

      83° / 59°

      9 wet

    9. Sep

      76° / 51°

      9 wet

    10. Oct

      65° / 39°

      9 wet

    11. Nov

      53° / 31°

      9 wet · 1 snow

    12. Dec

      43° / 23°

      10 wet · 4 snow

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at West Medway, MA, 4.6 mi away at 210 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (10)