Washington · Rock climbing · Tonasket

Sinlahekin Valley (Loomis)

2 sport climbing routes in Washington's Sinlahekin Valley (Loomis)

2 routes
5.10a – 5.11a
Sport

Best time to visit Sinlahekin Valley (Loomis)

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

    33° / 23°

    10 wet

  2. Feb

    40° / 25°

    8 wet

  3. Mar

    52° / 31°

    8 wet

  4. Apr

    63° / 37°

    6 wet

  5. May

    72° / 45°

    7 wet

  6. Jun

    79° / 51°

    6 wet

  7. Jul

    89° / 58°

    3 wet

  8. Aug

    89° / 57°

    3 wet

  9. Sep

    78° / 48°

    4 wet

  10. Oct

    61° / 38°

    6 wet

  11. Nov

    43° / 29°

    9 wet

  12. Dec

    33° / 23°

    11 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Omak Ap, WA, 16 mi away at 1,296 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Sinlahekin Valley (Loomis) is a climbing area in the Sinlahekin Wildlife Area Complex in northeastern Washington, managed by State Fish and Wildlife. It sits within the larger Sinlahekin Wildlife Area Complex, and the nearest town is Omak, about 16 miles away. The most comfortable months for a visit are typically late spring and early fall. Typical averages from the nearby Omak airport weather station show May highs around 72°F and September highs around 78°F, with July and August peaking near 89°F. That station sits about 450 feet lower than the valley, so temperatures here run a little cooler. Nearby options include the Schalow hike about 4.6 miles away and the Kerr campground at 5.6 miles. The Rapanui Boulder climbing area and Sinlahekin Creek, a canoeing spot, are both about 6.7 miles off.

Routes (2)

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East SidePhoto: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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Little West CanyonPhoto: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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Last WallPhoto: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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The Mid West - FZ WallPhoto: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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South ButtressPhoto: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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McLoughlin Canyon (Tonasket)Photo: BLM Oregon & Washington, Public domain (via Wikimedia Commons)

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West FacePhoto: Forest Service Pacific Northwest Region, Public Domain Mark (via Flickr)

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~36 min drive

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~11 min drive

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