Best year time to visit Chehalis

General weather information about Chehalis

Average annual temperature is 11.0 °C

Absolute maximum temperature: 37.1 °C

Absolute minimum temperature: -7.0 °C

Number of sunny days: 162 days

Number of rainy days: 203 days

Look at detailed online map of Chehalis

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

Chehalis air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.814.717.826.131.930.032.937.130.726.815.815.3
Average daytime temperature (°C)9.38.110.913.022.123.227.828.822.517.010.49.9
Average temperature (°C)5.53.65.27.614.615.418.920.515.611.46.56.9
Average night temperature (°C)2.70.91.54.19.19.812.214.611.28.13.94.7
Absolute minimum temperature (°C)-5.8-7.0-3.3-0.74.45.49.19.87.4-2.0-3.1-2.0

Chehalis monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.015.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.14.66.55.910.511.312.911.17.96.15.13.1
Precipitation (mm)113113139185352743178126171284
Sunny days7856192127181515138
Rainy days2420262412941315161723
Snow days000000000000

Chehalis - weather forecast by months

Chehalis weather in januaryChehalis weather in februaryChehalis weather in marchChehalis weather in aprilChehalis weather in mayChehalis weather in juneChehalis weather in julyChehalis weather in augustChehalis weather in septemberChehalis weather in octoberChehalis weather in novemberChehalis weather in december

Best time to visit Chehalis:

The best time to visit Chehalis during the most sunny months:

  • May — 10.5(h)
  • June — 11.3(h)
  • July — 12.9(h)
  • August — 11.1(h)

Months with the longest average daylight duration in Chehalis:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in Chehalis is at

  • March — 139(mm)
  • April — 185(mm)
  • November — 171(mm)
  • December — 284(mm)

    • Weather forecast in the closest to Chehalis admin centers

    Weather forecast in the closest towns to Chehalis

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    Frequently asked questions

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