Lemont Weather Forecast

    • 72
    • 91

    Chance Thunderstorms

    • 69
    • 86

    Rain Showers Likely

    • 71
    • 88

    Chance Thunderstorms

    • 72
    • 93

    Chance Thunderstorms

    • 67
    • 88

    Rain Showers Likely

    • 65
    • 86

    Mostly Sunny

Today 26 Jun Southern Cook

Partly cloudy. A slight chance of Thunderstorms in the morning. A chance of Showers. A chance of Thunderstorms in the afternoon. Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of precipitation 30 percent. Heat index Values up to 100.

Tonight 26 Jun Southern Cook

Partly cloudy. A chance of Showers and Thunderstorms, mainly in the evening. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 40 percent.

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Lemont Temperature Statistics

June Temperature

Lewis University Airport (6.8 miles)

  • Lowest 1 June, 2025

    42.7 °F

  • Average June

    70.8 °F

  • Highest 22 June, 2025

    93.2 °F

Climate (2020–Present)

Lewis University Airport (6.8 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    61.7 °F
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