Best year time to visit Mount Rainier

General weather information about Mount Rainier

Average annual temperature is 14.9 °C

Absolute maximum temperature: 38.2 °C

Absolute minimum temperature: -8.6 °C

Number of sunny days: 185 days

Number of rainy days: 180 days

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* Weather data for Mount Rainier United States is based on climate observations for 2026 year

Mount Rainier air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)18.923.925.331.128.234.038.234.037.127.624.916.1
Average daytime temperature (°C)10.612.413.522.323.128.232.030.426.821.514.011.0
Average temperature (°C)6.26.97.715.617.121.926.224.821.615.88.26.3
Average night temperature (°C)2.52.32.610.011.316.421.320.317.211.13.82.4
Absolute minimum temperature (°C)-3.5-8.6-4.41.35.511.718.215.811.45.6-5.0-3.4

Mount Rainier monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.810.712.013.214.314.814.613.712.411.210.19.5
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.36.57.59.310.910.912.110.88.48.87.75.4
Precipitation (mm)73646913938122150761233860181
Sunny days15161617151371117192217
Rainy days16121513161724201312814
Snow days000000000000

Mount Rainier - weather forecast by months

Mount Rainier weather in januaryMount Rainier weather in februaryMount Rainier weather in marchMount Rainier weather in aprilMount Rainier weather in mayMount Rainier weather in juneMount Rainier weather in julyMount Rainier weather in augustMount Rainier weather in septemberMount Rainier weather in octoberMount Rainier weather in novemberMount Rainier weather in december

Best time to visit Mount Rainier:

The best time to visit Mount Rainier during the most sunny months:

  • May — 10.9(h)
  • June — 10.9(h)
  • July — 12.1(h)
  • August — 10.8(h)

The largest precipitation sum in Mount Rainier is at

  • April — 139(mm)
  • June — 122(mm)
  • July — 150(mm)
  • September — 123(mm)
  • December — 181(mm)

    • Weather forecast in the closest to Mount Rainier admin centers

    Weather forecast in the closest towns to Mount Rainier

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    Frequently asked questions

    When is the best time to visit Mount Rainier?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Mount Rainier.
    What is the weather like in Mount Rainier?
    See average temperature, rainfall and daylight hours for Mount Rainier by month in the table above.
    How many sunny days does Mount Rainier have?
    The monthly weather statistics above show sunshine and rainfall patterns for Mount Rainier throughout the year.