Indianapolis International Airport Weather Forecast

    • 31
    • 40

    Increasing Clouds

    • 33
    • 40

    Chance Rain

    • 21
    • 50

    Rain

    • 24
    • 28

    Partly Sunny

    • 27
    • 46

    Mostly Cloudy

    • 26
    • 38

    Mostly Cloudy

    • 33
    • 40

    Mostly Cloudy

Today 16 Dec Marion

Mostly sunny and not as cool. Near steady temperature in the mid 30s. South Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 16 Dec Marion

Mostly sunny late this Afternoon, then partly cloudy with scattered Flurries through midnight. Mostly cloudy toward daybreak. Patchy fog toward daybreak. Not as cool with Lows in the lower 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Indianapolis International Airport Temperature Statistics

December Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 14 December, 2025

    -4 °F

  • Average December

    25.9 °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

    55.4 °F

  • Average High 2020–2025

    64.7 °F
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