Lemont Weather Forecast

    • 60
    • 78

    Mostly Cloudy

    • 60
    • 70

    Chance Rain Showers

    • 65
    • 78

    Chance Thunderstorms

    • 74
    • 88

    Partly Sunny

    • 76
    • 93

    Mostly Sunny

    • 76
    • 94

    Mostly Sunny

Today 25 Jun Southern Cook

Partly cloudy. Temperatures in the upper 70s. Northwest Winds around 10 Mph.

Tonight 25 Jun Southern Cook

Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 60. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lemont Temperature Statistics

June Temperature

Lewis University Airport (6.8 miles)

  • Lowest 2 June, 2026

    45.6 °F

  • Average June

    69.4 °F

  • Highest 6 June, 2026

    90.6 °F

Climate (2021–2026)

Lewis University Airport (6.8 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    61.9 °F
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