Massachusetts · Rock climbing · Bolton

Powder House Crag

8 routes
5.3 – 5.8
Top Rope
Apr–Jun, Aug–Oct
best months

Powder House Crag is a climbing area in Massachusetts, set on Philben Land Conservation. It is a small crag with eight top-rope routes, all rated between 5.3 and 5.8 on the YDS scale. The most common grade is 5.6, and the hardest is 5.8. The Bolton/Lancaster climbing area lies about 1.3 miles away, and Welcome Boulder is about 3.2 miles off. For time on foot, the Zink North Woods Trail is 1.8 miles away and the Great Oak Farm Trail is 2.4 miles away. Late spring and early fall are the most comfortable times to climb. Typical averages from a nearby weather station in Maynard show May highs around 73°F and September highs around 78°F, with July peaking near 87°F.

  • Best time to go · Apr–Jun, Aug–Oct

    Best time to visit Powder House Crag

    Best months: April–June and August–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° / 15°

      11 wet

    2. Feb

      41° / 16°

      9 wet

    3. Mar

      48° / 24°

      12 wet

    4. Apr

      62° / 34°

      12 wet

    5. May

      73° / 45°

      12 wet

    6. Jun

      81° / 55°

      11 wet

    7. Jul

      87° / 60°

      10 wet

    8. Aug

      85° / 58°

      10 wet

    9. Sep

      78° / 49°

      9 wet

    10. Oct

      66° / 38°

      11 wet

    11. Nov

      54° / 29°

      10 wet

    12. Dec

      43° / 21°

      11 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Maynard 2, MA, 8.3 mi away at 205 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (8)