Indianapolis International Airport Weather Forecast

    • 74
    • 86

    Chance Thunderstorms

    • 71
    • 87

    Rain Showers Likely

    • 62
    • 83

    Partly Sunny

    • 66
    • 83

    Mostly Sunny

    • 64
    • 84

    Chance Rain Showers

    • 59
    • 78

    Slight Chance Thunderstorms

Today 15 Aug Marion

Mostly cloudy with a chance of Thunderstorms. Showers likely early this Afternoon, then a chance of Showers late this afternoon. Some Thunderstorms may produce heavy rainfall. Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 15 Aug Marion

Partly cloudy with a chance of Showers. A chance of Thunderstorms through the late Overnight, then a slight chance of Thunderstorms toward daybreak. Some Thunderstorms may produce heavy rainfall through the late overnight. Some Thunderstorms may produce heavy rainfall toward daybreak. Humid with Lows in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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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 °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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