Indianapolis International Airport Weather Forecast

    • 75
    • 95

    Mostly Sunny

    • 74
    • 95

    Slight Chance Thunderstorms

    • 72
    • 92

    Chance Thunderstorms

    • 67
    • 89

    Chance Thunderstorms

    • 65
    • 85

    Partly Sunny

    • 63
    • 84

    Partly Sunny

Today 2 Sep Marion

Sunny, hot with Highs in the mid 90s. Southwest Winds 5 to 10 Mph.

Tonight 2 Sep Marion

Clear. Near steady temperature in the mid 70s. Southwest Winds around 5 Mph.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

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Climate (2021–2026)

Indianapolis International Airport (0.6 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    65.2 °F
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