Best year time to visit Lewiston

General weather information about Lewiston

Average annual temperature is 15.3 °C

Absolute maximum temperature: 37.2 °C

Absolute minimum temperature: -8.1 °C

Number of sunny days: 198 days

Number of rainy days: 165 days

Number of snow days: 2 days

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

Lewiston air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)19.625.026.730.930.531.937.235.536.428.526.619.1
Average daytime temperature (°C)11.314.015.023.123.327.832.530.827.122.014.411.7
Average temperature (°C)6.58.28.816.017.321.826.224.921.516.08.86.5
Average night temperature (°C)3.13.73.910.412.417.021.720.517.311.74.72.9
Absolute minimum temperature (°C)-2.6-8.1-2.23.57.113.619.717.211.06.6-3.7-2.4

Lewiston 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)9.910.812.013.214.214.814.513.612.411.210.19.6
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.76.97.99.710.410.611.910.98.88.77.85.8
Precipitation (mm)84703610761115142321352548141
Sunny days13161619161391319202420
Rainy days17111511151722181111611
Snow days110000000000

Lewiston - weather forecast by months

Lewiston weather in januaryLewiston weather in februaryLewiston weather in marchLewiston weather in aprilLewiston weather in mayLewiston weather in juneLewiston weather in julyLewiston weather in augustLewiston weather in septemberLewiston weather in octoberLewiston weather in novemberLewiston weather in december

Best time to visit Lewiston:

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

  • July — 11.9(h)

The largest precipitation sum in Lewiston is at

  • April — 107(mm)
  • June — 115(mm)
  • July — 142(mm)
  • September — 135(mm)
  • December — 141(mm)

    • Weather forecast in the closest to Lewiston admin centers

    Weather forecast in the closest towns to Lewiston

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    Frequently asked questions

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