Indianapolis International Airport Weather Forecast

    • 61
    • 81

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 70
    • 88

    Partly Sunny

    • 68
    • 92

    Chance Rain Showers

    • 60
    • 82

    Slight Chance Rain Showers

    • 60
    • 82

    Partly Sunny

Today 6 Sep Marion

Mostly sunny. Not as warm with Highs in the lower 80s. Northeast Winds 5 to 10 Mph.

Tonight 6 Sep Marion

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

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 1 September, 2026

    74.6 °F

  • Average September

    85.7 °F

  • Highest 1 September, 2026

    96.7 °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

    65.2 °F
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