Best year time to visit Lewis County

General weather information about Lewis County

Average annual temperature is 13.3 °C

Absolute maximum temperature: 36.6 °C

Absolute minimum temperature: -15.3 °C

Number of sunny days: 211 days

Number of rainy days: 145 days

Number of snow days: 9 days

Look at detailed online map of Lewis County

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

Lewis County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.216.122.628.031.233.436.036.633.230.322.116.0
Average daytime temperature (°C)5.49.010.319.325.429.730.529.027.419.612.38.4
Average temperature (°C)0.72.54.712.218.923.624.924.121.214.66.94.4
Average night temperature (°C)-2.4-2.30.76.312.917.819.819.916.010.42.51.5
Absolute minimum temperature (°C)-13.1-15.3-10.4-1.04.910.015.113.311.6-2.4-8.3-6.5

Lewis County monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.415.014.713.712.511.110.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.57.76.810.311.512.612.110.210.37.27.75.0
Precipitation (mm)47801083150276813631861392
Sunny days181912192120141222152415
Rainy days97181110101719816515
Snow days421000000011

Lewis County - weather forecast by months

Lewis County weather in januaryLewis County weather in februaryLewis County weather in marchLewis County weather in aprilLewis County weather in mayLewis County weather in juneLewis County weather in julyLewis County weather in augustLewis County weather in septemberLewis County weather in octoberLewis County weather in novemberLewis County weather in december

Best time to visit Lewis County:

The best time to visit Lewis County during the most sunny months:

  • May — 11.5(h)
  • June — 12.6(h)
  • July — 12.1(h)

The largest precipitation sum in Lewis County is at

  • March — 108(mm)
  • August — 136(mm)
  • October — 86(mm)
  • December — 92(mm)

    • Weather forecast in the closest to Lewis County admin centers

    Weather forecast in the closest towns to Lewis County

    Explore Lewis County

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    MapTrains schedule
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    Frequently asked questions

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