Romeoville Weather Forecast

    • 62
    • 79

    Rain Showers Likely

    • 55
    • 67

    Rain Showers

    • 47
    • 64

    Rain Showers

    • 35
    • 57

    Mostly Sunny

    • 39
    • 60

    Sunny

    • 47
    • 66

    Partly Sunny

    • 47
    • 67

    Mostly Cloudy

Today 13 Oct Northern Will

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the lower 70s.

Tonight 13 Oct Northern Will

Showers likely and a chance of Thunderstorms in the late evening and early morning. A chance of Showers and a slight chance of Thunderstorms late. Lows in the lower 60s. North Winds around 5 Mph. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Romeoville Temperature Statistics

October Temperature

Lewis University Airport (3.1 miles)

  • Lowest 5 October, 2026

    44.7 °F

  • Average October

    62.4 °F

  • Highest 7 October, 2026

    80.7 °F

Climate (2021–2026)

Lewis University Airport (3.1 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.9 °F
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