Trailwind
National Park · WA

Mount Rainier

Wildflowers late Jul-Aug
Best seasonJun–Sep
Entrance$30
Campgrounds12
Fly intoSEA
When to go · season and historical weather

Sweet spotPeak Jul–Sep. Go in Jun for similar weather.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Bar height shows the season; shaded months are the window to go. Select a month for historical weather.
Weather data & source

2018–2023 averages, not a forecast. Wet days estimate days with at least 1 mm of rain or snow using a calibrated ERA5 threshold. Contains modified Copernicus Climate Change Service information. Weather data by Open-Meteo.com (AWS Open Data, CC BY 4.0). Sunny share of daylight does not describe nighttime visibility. Season bars and highlighted months are separate from these weather averages. ERA5 via Open-Meteo AWS Open Data

On the map
Map showing the location of Mount Rainier

When to go

Weather patterns at Mount Rainier are strongly influenced by the Pacific Ocean and elevation. The climate is generally cool and rainy, with summer highs in the 60s and 70s. While July and August are the sunniest months of the year, rain is very likely in spring, fall, and winter. Visitors should be aware that mountain weather is very changeable. In the higher elevations, like Paradise, winter can last from November to May with many feet of snow on the ground.

Know before you go

Entrance $3012 campgrounds · 12 reservableFly into SEA
Check current conditions with NPS →

Campgrounds

In and around Mount Rainier, reservable sites first.