Indianapolis International Airport Weather Forecast

    • 67
    • 83

    Rain Showers

    • 67
    • 84

    Rain Showers

    • 64
    • 85

    Partly Sunny

    • 68
    • 85

    Mostly Sunny

    • 68
    • 91

    Chance Rain Showers

    • 69
    • 90

    Rain Showers Likely

Today 11 Sep Marion

Partly cloudy Early, then becoming mostly cloudy. Highs in the lower 80s. Southeast Winds around 5 Mph.

Tonight 11 Sep Marion

Partly cloudy Early, then becoming mostly cloudy. Numerous Showers and scattered Thunderstorms toward daybreak. Lows in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 70 percent.

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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

    81.9 °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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