Indianapolis International Airport Weather Forecast

    • 50
    • 72

    Mostly Cloudy

    • 51
    • 72

    Partly Sunny

    • 52
    • 74

    Partly Sunny

    • 51
    • 73

    Partly Sunny

    • 53
    • 77

    Partly Sunny

    • 63
    • 81

    Chance Rain Showers

Today 24 Sep Marion

Mostly cloudy. Patchy very light drizzle toward daybreak. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 24 Sep Marion

Mostly clear. Lows around 50. Northeast Winds 5 to 10 Mph.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 14 September, 2026

    58.6 °F

  • Average September

    78.6 °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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