Indianapolis International Airport Weather Forecast

    • 64
    • 81

    Rain Showers

    • 67
    • 82

    Mostly Cloudy

    • 66
    • 85

    Chance Thunderstorms

    • 66
    • 85

    Slight Chance Thunderstorms

    • 69
    • 89

    Slight Chance Thunderstorms

    • 63
    • 88

    Chance Rain Showers

Today 10 Sep Marion

Mostly cloudy. Numerous Showers Early, then scattered Showers late. Highs in the lower 80s. Temperature steady or slowly falling. Northwest Winds around 5 Mph. Chance of rain 60 percent.

Tonight 10 Sep Marion

Mostly cloudy. Lows in the mid 60s. Northeast Winds around 5 Mph.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 7 September, 2026

    62.7 °F

  • Average September

    82 °F

  • Highest 4 September, 2026

    97.6 °F

Climate (2021–2026)

Indianapolis International Airport (0.6 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    65.3 °F
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