Indianapolis International Airport Weather Forecast

    • 44
    • 71

    Sunny

    • 43
    • 71

    Sunny

    • 42
    • 70

    Mostly Sunny

    • 44
    • 70

    Partly Sunny

    • 48
    • 74

    Partly Sunny

    • 48
    • 71

    Mostly Cloudy

Today 21 Oct Marion

Patchy fog through early afternoon. Sunny. Highs in the lower 70s. Light and variable Winds, becoming north around 5 Mph late in the afternoon.

Tonight 21 Oct Marion

Clear. Patchy fog toward daybreak. Lows in the mid 40s. Northeast Winds around 5 Mph through the late Overnight, becoming light and variable.

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Indianapolis International Airport Temperature Statistics

October Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 17 October, 2026

    37.9 °F

  • Average October

    64.7 °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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