Lemont Weather Forecast

    • 39
    • 55

    Rain Showers

    • 29
    • 41

    Rain/Snow

    • 35
    • 40

    Mostly Cloudy

    • 34
    • 55

    Mostly Cloudy

    • 23
    • 40

    Mostly Cloudy

    • 26
    • 34

    Mostly Cloudy

Today 30 Jan Southern Cook

Cloudy. A chance of Showers in the afternoon. Record breaking warmth likely. Highs in the mid 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent.

Tonight 30 Jan Southern Cook

Occasional Showers. Patchy fog. Unseasonably mild. Lows in the upper 30s. South Winds 5 to 10 Mph in the Evening, becoming east after midnight. Chance of precipitation 80 percent.

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  • Temperature Forecast NOAA

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Lemont Temperature Statistics

January Temperature

Lewis University Airport (6.8 miles)

  • Lowest 21 January, 2025

    -7.6 °F

  • Average January

    19.2 °F

  • Highest 28 January, 2025

    48.2 °F

Climate (2020–Present)

Lewis University Airport (6.8 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    61.5 °F
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