Indianapolis International Airport Weather Forecast

    • 56
    • 78

    Becoming Sunny

    • 57
    • 78

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 65
    • 84

    Slight Chance Thunderstorms

    • 63
    • 83

    Slight Chance Thunderstorms

    • 62
    • 82

    Partly Sunny

    • 65
    • 83

    Partly Sunny

Today 23 Aug Marion

Mostly sunny Early, then becoming partly cloudy. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug Marion

Mostly clear. Lows in the mid 50s. Northwest Winds around 5 Mph through the late Overnight, becoming light and variable.

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Indianapolis International Airport Temperature Statistics

August Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 18 August, 2026

    63.6 °F

  • Average August

    76.9 °F

  • Highest 8 August, 2026

    90.6 °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

    65.2 °F
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