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Boat launch

Porcupine Bay Boat Launch

Washington

About

Porcupine Bay Boat Launch is a boat launch in Lake Roosevelt National Recreation Area in northeastern Washington, managed by the National Park Service. The nearest town is Davenport, about 17 miles away. Summer is the most comfortable time to visit. Typical averages from a nearby weather station in Davenport show July and August highs around 82°F with lows near 48°F and only two or three wet days a month. Winters are cold, with January highs around 32°F and several snowy days. Several short hikes start close by. Dear Canyon Trail North is about a mile away, and Mountain Lion Trail East and Holles Creek Trail East are each within about 1.5 miles.

Launch Details

Managed by

National Park Service

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Location

Porcupine Bay Boat Launch

Washington

Data source: nps public poi

Facts about this place

When to go

Best time to go: May–Sep. The mildest months here, with typical highs of 65–82°F and lows of 39–48°F.

Typical monthly averages (not a forecast) from the Davenport, WA weather station, 17 mi away. High / low in °F, and days with snow.

  1. Jan32° high19° low5 days with snow
  2. Feb37° high21° low3 days with snow
  3. Mar47° high27° low1 days with snow
  4. Apr56° high31° low
  5. May65° high39° low
  6. Jun72° high43° low
  7. Jul82° high48° low
  8. Aug82° high48° low
  9. Sep73° high40° low
  10. Oct57° high31° low
  11. Nov42° high25° low2 days with snow
  12. Dec31° high19° low5 days with snow

Source: NOAA NCEI U.S. Climate Normals 1991–2020

Where it is

Nearest town
Davenport, Washington · 17 mi

Source: NPS Land Resources boundaries; USGS GNIS populated places

Conditions

Active alerts for Lake Roosevelt National Recreation Area as of Oct 9, 2026:

Source: NPS Alerts API

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)