Colorado · Bouldering · Boulder

Left Arete

One of 11 routes at North Shelf Block in the lower-intermediate range.

V1
grade
Bouldering Pads
style

Best time to visit Left Arete

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, 2.7 mi away at 5,484 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

One of 11 routes catalogued at North Shelf Block, this climb sits in the lower-intermediate range of the crag's V0 to V6-7 span.

Photo of the crag

North Shelf Block — the crag this route is on
North Shelf Block, Colorado — this photo shows the crag, not this individual route.Photo: micahcraig, CC BY-SA 2.0 (via Flickr)

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