Mount Rainier · September · Washington
Mount Rainier National Park in September
September is a prime month to visit Mount Rainier National Park. Expect busy. Highs average 28°F and lows 9°F, with about 3.1 inches of rain.
September gets a prime rating at Mount Rainier. The very best months are Jul–Sep.
Last prime month Best value
What to expect
September is prime at Mount Rainier. Huckleberry and mountain ash turn the meadows red and gold in late September. Weather turns quickly in October, and Sunrise Road closes for the season.
Clouds hide the mountain on many days. Check the Paradise webcam before you drive up, and go on a weekday in August for the best mix of flowers and space.
Good to know
- Best months overall: Jul–Sep.
- Closest airport: Seattle–Tacoma (SEA), about 2 hours.
- Before you go: The park has used timed-entry reservations for the Paradise and Sunrise corridors in recent summers. Check the current season's rules before you go. Check current conditions on nps.gov.
Questions
Is September a good time to visit Mount Rainier National Park?
September is a prime month to visit Mount Rainier National Park. Expect busy. Highs average 28°F and lows 9°F, with about 3.1 inches of rain.
What is the weather like in Mount Rainier National Park in September?
Highs average 28°F and lows 9°F, with about 3.1 inches of rain. September is rated prime for visiting.
How crowded is Mount Rainier National Park in September?
September brings busy to Mount Rainier National Park. Go early in the day and book lodging ahead.