Colorado · Rock climbing · Lyons

River Wall II

River Wall II in Colorado has 19 climbing routes across 16 grades, offering mixed, sport, and trad styles.

19 routes
5.7 – 5.14a
Sport · Trad · Mixed

Best time to visit River Wall II

Best months: April–June and September–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

    47° / 21°

    6 wet

  2. Feb

    48° / 22°

    7 wet

  3. Mar

    57° / 29°

    8 wet

  4. Apr

    63° / 34°

    10 wet

  5. May

    71° / 43°

    12 wet

  6. Jun

    83° / 51°

    10 wet

  7. Jul

    88° / 57°

    11 wet

  8. Aug

    86° / 55°

    10 wet

  9. Sep

    79° / 48°

    8 wet

  10. Oct

    66° / 37°

    7 wet

  11. Nov

    54° / 28°

    6 wet

  12. Dec

    46° / 21°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Boulder, CO, 16.9 mi away at 5,484 ft. The station sits about 500 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

River Wall II is a climbing area on city land within the Buttonrock Res, N St Vrain Cr land unit in Colorado, about 16 miles from Boulder. It sits among a cluster of climbing spots and trails, with Longmont Reservoir Area (aka Buttonrock) about 0.3 miles away and Lion's Den, The about 0.2 miles away. For comfortable weather, aim for late spring or early fall. Typical averages from a nearby weather station in Boulder show May highs around 71°F and September highs around 79°F, with July peaking near 88°F. Sleepy Lion Trail is about half a mile away, and Night Hawk Trail is under a mile off. Paddlers can reach North Saint Vrain Creek about 5 miles away, and Olive Ridge Campground is roughly 9.5 miles away.