Indianapolis International Airport Weather Forecast

    • 37
    • 64

    Sunny

    • 39
    • 69

    Mostly Sunny

    • 42
    • 71

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 47
    • 74

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

Today 18 Oct Marion

Sunny. Highs in the mid 60s. South Winds around 5 Mph.

Tonight 18 Oct Marion

Clear. Lows in the upper 30s. Southeast Winds around 5 Mph.

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Indianapolis International Airport Temperature Statistics

October Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 5 October, 2026

    47.6 °F

  • Average October

    67.1 °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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