Indianapolis International Airport Weather Forecast

    • 48
    • 73

    Decreasing Clouds

    • 49
    • 74

    Partly Sunny

    • 52
    • 72

    Mostly Cloudy

    • 51
    • 75

    Mostly Sunny

    • 51
    • 77

    Mostly Sunny

    • 54
    • 77

    Mostly Cloudy

Today 25 Oct Marion

Partly cloudy. Highs in the lower 70s. Southeast Winds around 5 Mph.

Tonight 25 Oct Marion

Mostly clear. Lows in the upper 40s. Light and variable Winds.

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Indianapolis International Airport Temperature Statistics

October Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 18 October, 2026

    37.7 °F

  • Average October

    63.5 °F

  • Highest 13 October, 2026

    88.6 °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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