North Cascades · August · Washington
North Cascades National Park in August
August is a prime month to visit North Cascades National Park. Expect busy. Highs average 78°F and lows 58°F, with about 1.68 inches of rain.
August gets a prime rating at North Cascades. The very best months are Jul–Sep.
Best value
What to expect
August is prime at North Cascades. The best and busiest time, though 'busy' here is quiet by national park standards. Trails clear in July and Diablo Lake glows turquoise from glacial flour.
Most visitors see the park from State Route 20. For the real backcountry, hike Cascade Pass or take the boat up Lake Chelan to Stehekin.
Good to know
- Best months overall: Jul–Sep.
- Closest airport: Seattle–Tacoma (SEA), about 2.5 hours.
- Before you go: No entrance fee. State Route 20 has a seasonal winter closure; check WSDOT for opening dates. Check current conditions on nps.gov.
Questions
Is August a good time to visit North Cascades National Park?
August is a prime month to visit North Cascades National Park. Expect busy. Highs average 78°F and lows 58°F, with about 1.68 inches of rain.
What is the weather like in North Cascades National Park in August?
Highs average 78°F and lows 58°F, with about 1.68 inches of rain. August is rated prime for visiting.
How crowded is North Cascades National Park in August?
August brings busy to North Cascades National Park. Go early in the day and book lodging ahead.