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Mount Rainier National Park (WA) Climate by Month

The temperature in Mount Rainier National Park can vary greatly throughout the year. The temperatures shift from cold to very cold. It also experiences much rain/snowfall throughout the year. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

Depending on the time of the year, temperatures range from chilly to very cold in Mount Rainier National Park . Average daytime temperatures reach a chilly 11°C in July. In February, the coolest month of the year, temperatures drop to a very cold -6°C. At night, expect cooler temperatures, averaging -13°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Mount Rainier National Park has a relatively rain/snowy climate with high precipitation levels, averaging 3498 mm of rain/snowfall annually. Mount Rainier National Park can be quite wet during March, receiving approximately 539 mm of precipitation over 27 snowy/rainy days. In contrast July, experiences much drier conditions, with 32 mm of rainfall, spread across 8 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Mount Rainier National Park can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.4 hours of sunshine daily. In contrast, the city experiences much darker days in November, with only 2.0 hours of sunlight per day.

Monthly hours of sunshine

Data from: Tacoma, the United States of America (68 KM, 42 Miles).

Daily hours of sunshine

Data from: Tacoma, the United States of America (68 KM, 42 Miles).

The best time of year to visit Mount Rainier National Park in the United States of America

Other facts from our historical weather data:
  • Which is the warmest month in Mount Rainier National Park ?
    July has an average maximum temperature of 11°C and is the warmest month of the year.
  • Which is the coldest month in Mount Rainier National Park ?
    The coldest month is December with an average maximum temperature of -6°C.
  • Which is the wettest month in Mount Rainier National Park ?
    March tops the wettest month list with 539 mm of rainfall.
  • Which is the driest month in Mount Rainier National Park ?
    July is the driest month with 32 mm of precipitation.
  • Which is the sunniest month in Mount Rainier National Park ?
    July is the sunniest month with an average of 312 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Mount Rainier National Park (WA)

    Thu   Nov 21
    -8°C | -16°C
    SW 40 km/h
    4.4 mm
    broken clouds and snow

    broken clouds and snow

    Fri   Nov 22
    -1°C | -8°C
    S 11 km/h
    40 mm
    broken clouds and snow

    broken clouds and snow

    Sat   Nov 23
    -2°C | -6°C
    S 11 km/h
    38 mm
    overcast and heavy snow

    overcast and heavy snow