How Crowded Is Mount Rainier in May?
May is a quiet month at Mount Rainier National Park, running about 0.7× the park's average month — roughly 6% of the year's visitors come in May. That puts it between the July peak and the February low. Overall our best-time score rates May as "Fair" for a visit. Typical May weather averages a high near 48°F and a low around 33°F, with about 5.1" of precipitation. You'll get about 14.8 hours of daylight to explore.
Frequently Asked Questions
May is quiet at Mount Rainier National Park (about 0.7× the average month). Our best-time score rates it "Fair". The single best month overall is May.
The busiest month is July and the quietest is February. May sits at about 0.7× the park's average, or 6% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.