Romeoville Weather Forecast

    • 62
    • 79

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 68
    • 86

    Chance Thunderstorms

    • 67
    • 86

    Rain Showers Likely

    • 64
    • 82

    Slight Chance Thunderstorms

    • 64
    • 83

    Partly Sunny

Today 6 Jul Northern Will

Partly cloudy in the morning then clearing. Highs around 80. Northeast Winds 5 to 10 Mph.

Tonight 6 Jul Northern Will

Mostly clear. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Romeoville Temperature Statistics

July Temperature

Lewis University Airport (3.1 miles)

  • Lowest 4 July, 2026

    69.8 °F

  • Average July

    80.1 °F

  • Highest 2 July, 2026

    93.7 °F

Climate (2021–2026)

Lewis University Airport (3.1 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    61.9 °F
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