Crater Lake
A flooded volcano with the bluest water in America, reachable by road only when the snow lets go.
4 national parks
Best Time to Visit Pacific Northwest National Parks
Glaciated volcanoes, temperate rainforest and a wild coast. Snow controls the calendar here: high roads and trails usually clear in July, and the dry window runs from July into September.
Best overall months for the region: July through September. Each park has its own window below.
Average rating by month
Season calendar
The parks
Mount Rainier
A 14,410-foot volcano ringed with glaciers and some of the best wildflower meadows anywhere.
North Cascades
The 'American Alps': jagged peaks, hundreds of glaciers and turquoise lakes with a fraction of the crowds.
Olympic
Rainforest, wild coastline and glaciated peaks in one park.
Questions
When is the best time to visit Pacific Northwest national parks?
July through September are the best overall months for the 4 parks in this region. Snow controls the calendar here: high roads and trails usually clear in July, and the dry window runs from July into September.
How many national parks are in the Pacific Northwest region?
4: Crater Lake, Mount Rainier, North Cascades, Olympic.
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Last reviewed October 4, 2026. Ratings are editorial. Rules and road openings change each year, so confirm on the official NPS site before you go.