Indianapolis International Airport Weather Forecast

    • 70
    • 89

    Rain Showers

    • 61
    • 79

    Rain Showers

    • 64
    • 81

    Partly Sunny

    • 67
    • 86

    Slight Chance Thunderstorms

    • 67
    • 86

    Chance Rain Showers

    • 70
    • 88

    Chance Rain Showers

Today 9 Sep Marion

Partly cloudy with scattered Showers. Isolated Thunderstorms through early Afternoon, then scattered Thunderstorms late this afternoon. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph through early afternoon. Chance of rain 40 percent.

Tonight 9 Sep Marion

Mostly cloudy with scattered Thunderstorms. Scattered Showers. Humid with Lows around 70. West Winds around 5 Mph. Chance of rain 50 percent.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 7 September, 2026

    62.1 °F

  • Average September

    82.6 °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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