Indianapolis International Airport Weather Forecast

    • 65
    • 81

    Rain Showers

    • 63
    • 80

    Partly Sunny

    • 63
    • 81

    Mostly Sunny

    • 61
    • 79

    Chance Thunderstorms

    • 58
    • 77

    Partly Sunny

    • 60
    • 77

    Partly Sunny

    • 63
    • 79

    Partly Sunny

Today 19 Aug Marion

Partly cloudy. A slight chance of Showers and Thunderstorms Early, then a chance of Showers and Thunderstorms late. Some Thunderstorms may produce heavy rainfall. Highs in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

Tonight 19 Aug Marion

Mostly cloudy. Scattered Showers and Thunderstorms late this Afternoon, then isolated Showers toward daybreak. Patchy fog. Some Thunderstorms may produce heavy rainfall late this afternoon. Lows in the mid 60s. Southwest Winds around 5 Mph, becoming north 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

    77.5 °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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