Connecticut · Rock climbing · West Granby

Diamond Cluster

8 routes
V0 – V4
Bouldering
Apr, Jun–Oct
best months

Diamond Cluster is a bouldering area in Connecticut, about half a mile from the town of West Granby. It sits among a cluster of climbing and hiking spots, with Diamond Ledge and the Warm up Wall at Frances B. Petersen Preserve both within a quarter mile. The area is a bouldering destination, with eight routes spread across the cluster. All are bouldering problems, and they range from V0 to V4, with the hardest being Acid Rain at V4. The routes include Cherry Pop at V0, Jetstream at V0-1, and Synovitis at V2. For a longer outing, the Lookout Trail and High Ridge Trail are both about 0.2 miles away. Paddlers can find Stony Brook and the East Branch Farmington River about 7.5 miles off.

  • Best time to go · Apr, Jun–Oct

    Best time to visit Diamond Cluster

    Best months: April and June–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

      34° / 14°

      11 wet

    2. Feb

      37° / 15°

      9 wet

    3. Mar

      46° / 24°

      10 wet

    4. Apr

      59° / 35°

      11 wet

    5. May

      70° / 45°

      13 wet

    6. Jun

      79° / 55°

      12 wet

    7. Jul

      84° / 60°

      12 wet

    8. Aug

      82° / 58°

      10 wet

    9. Sep

      75° / 51°

      9 wet

    10. Oct

      63° / 40°

      11 wet

    11. Nov

      50° / 30°

      10 wet

    12. Dec

      39° / 21°

      11 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Barkhamsted, CT, 6.4 mi away at 710 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (8)