Indianapolis International Airport Weather Forecast

    • 18
    • 33

    Snow Showers

    • -2
    • 22

    Snow

    • -5
    • 8

    Cold

    • 17
    • 23

    Partly Sunny

    • 28
    • 34

    Mostly Cloudy

    • 37
    • 44

    Chance Rain

Today 12 Dec Marion

Mostly cloudy. A chance of Flurries in the morning. Highs in the lower 30s. Northeast Winds around 5 Mph, becoming northwest in the afternoon.

Tonight 12 Dec Marion

Mostly cloudy. Cold with Lows around 19. West Winds 5 to 10 Mph. Gusts up to 20 Mph toward daybreak.

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Indianapolis International Airport Temperature Statistics

December Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 4 December, 2025

    17.1 °F

  • Average December

    27.4 °F

  • Highest 9 December, 2025

    42.1 °F

Climate (2020–Present)

Indianapolis International Airport (0.6 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    64.8 °F
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