New Lenox Weather Forecast

    • 63
    • 74

    Chance Thunderstorms

    • 66
    • 79

    Rain Showers

    • 56
    • 70

    Rain Showers Likely

    • 52
    • 65

    Rain Showers Likely

    • 52
    • 64

    Slight Chance Rain Showers

    • 52
    • 67

    Mostly Cloudy

    • 54
    • 69

    Mostly Cloudy

Today 18 Sep Northern Will

Partly cloudy. Highs in the lower 70s.

Tonight 18 Sep Northern Will

Mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. A chance of Showers and Thunderstorms late. Lows in the lower 60s. East Winds around 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

New Lenox Temperature Statistics

September Temperature

Lewis University Airport (9.3 miles)

  • Lowest 14 September, 2026

    52.6 °F

  • Average September

    75 °F

  • Highest 2 September, 2026

    94.6 °F

Climate (2021–2026)

Lewis University Airport (9.3 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.9 °F
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