Indianapolis International Airport Weather Forecast

    • 50
    • 77

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 66
    • 85

    Mostly Cloudy

    • 63
    • 84

    Chance Rain Showers

    • 57
    • 69

    Chance Rain Showers

    • 57
    • 68

    Chance Rain Showers

Today 28 Sep Marion

Sunny through early Afternoon, then becoming partly cloudy. Highs in the upper 70s. North Winds around 5 Mph.

Tonight 28 Sep Marion

Clear. Patchy fog toward daybreak. Lows around 50. Northeast Winds around 5 Mph through the late Overnight, becoming light and variable.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 25 September, 2026

    53.1 °F

  • Average September

    76 °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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