Indianapolis International Airport Weather Forecast

    • 50
    • 65

    Rain Showers Likely

    • 52
    • 69

    Rain Showers Likely

    • 61
    • 71

    Rain Showers

    • 62
    • 78

    Chance Thunderstorms

    • 64
    • 80

    Rain Showers Likely

    • 64
    • 79

    Chance Thunderstorms

Today 20 May Marion

Cloudy. Showers likely through early Afternoon, then a chance of Showers late this afternoon. Not as warm with Highs in the mid 60s. Northeast Winds around 10 Mph. Gusts up to 20 Mph through early afternoon. Chance of rain 70 percent.

Tonight 20 May Marion

Mostly cloudy through the late Overnight, then becoming partly cloudy. Cooler with Lows around 50. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph toward daybreak.

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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

    58.5 °F

  • Highest 17 May, 2026

    83.6 °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

    65.2 °F
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