Indianapolis International Airport Weather Forecast

    • 73
    • 95

    Chance Rain Showers

    • 68
    • 92

    Chance Rain Showers

    • 61
    • 83

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

    • 70
    • 89

    Partly Sunny

    • 71
    • 93

    Partly Sunny

Today 4 Sep Marion

Sunny toward Daybreak, then becoming mostly sunny. Hot with Highs in the mid 90s. Southwest Winds around 5 Mph.

Tonight 4 Sep Marion

Mostly clear. Scattered Showers with isolated Thunderstorms toward daybreak. Humid with Lows in the mid 70s. West Winds around 5 Mph. Chance of rain 30 percent.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 1 September, 2026

    73.9 °F

  • Average September

    83.9 °F

  • Highest 1 September, 2026

    95 °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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