Indianapolis International Airport Weather Forecast

    • 68
    • 84

    Rain Showers

    • 60
    • 85

    Rain Showers

    • 50
    • 70

    Mostly Cloudy

    • 53
    • 69

    Mostly Cloudy

    • 61
    • 74

    Rain Showers Likely

    • 62
    • 79

    Chance Thunderstorms

Today 18 May Marion

Partly cloudy through early Afternoon, then becoming mostly cloudy. Scattered Thunderstorms. Scattered Showers through early Afternoon, then numerous Showers late this afternoon. Highs in the mid 80s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 18 May Marion

Mostly cloudy with scattered Showers with isolated Thunderstorms through the late Overnight, then partly cloudy toward daybreak. Lows in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

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Indianapolis International Airport Temperature Statistics

May Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 3 May, 2026

    36.6 °F

  • Average May

    56 °F

  • Highest 12 May, 2026

    76.6 °F

Climate (2021–Present)

Indianapolis International Airport (0.6 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    65.1 °F
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