North Cascades · September · Washington
North Cascades National Park in September
September is a prime month to visit North Cascades National Park. Expect busy. Highs average 71°F and lows 52°F, with about 2.98 inches of rain.
September gets a prime rating at North Cascades. The very best months are Jul–Sep.
Last prime month Best value
What to expect
September is prime at North Cascades. Late September into early October brings golden larches along the highway near Washington Pass and Maple Pass, just outside the park boundary.
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 September a good time to visit North Cascades National Park?
September is a prime month to visit North Cascades National Park. Expect busy. Highs average 71°F and lows 52°F, with about 2.98 inches of rain.
What is the weather like in North Cascades National Park in September?
Highs average 71°F and lows 52°F, with about 2.98 inches of rain. September is rated prime for visiting.
How crowded is North Cascades National Park in September?
September brings busy to North Cascades National Park. Go early in the day and book lodging ahead.