Indianapolis International Airport Weather Forecast

    • 62
    • 81

    Chance Thunderstorms

    • 65
    • 81

    Partly Sunny

    • 64
    • 80

    Rain Showers Likely

    • 61
    • 78

    Slight Chance Thunderstorms

    • 60
    • 78

    Partly Sunny

    • 61
    • 79

    Slight Chance Thunderstorms

Today 17 Aug Marion

Mostly cloudy Early, then becoming partly cloudy. A chance of Showers with a slight chance of Thunderstorms early. Highs in the lower 80s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 17 Aug Marion

Partly cloudy. Patchy fog through the late Overnight, then Areas of fog toward daybreak. Lows around 60. North Winds around 5 Mph through the late Overnight, becoming light and variable.

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Indianapolis International Airport Temperature Statistics

August Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 3 August, 2026

    64.7 °F

  • Average August

    77.2 °F

  • Highest 8 August, 2026

    90.6 °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

    65.2 °F
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