Indianapolis International Airport Weather Forecast

    • 57
    • 79

    Mostly Sunny

    • 64
    • 82

    Partly Sunny

    • 65
    • 87

    Rain Showers Likely

    • 56
    • 74

    Rain Showers Likely

    • 56
    • 67

    Chance Rain Showers

    • 48
    • 67

    Slight Chance Rain Showers

Today 29 Sep Marion

Sunny. Highs in the upper 70s. South Winds around 5 Mph.

Tonight 29 Sep Marion

Partly cloudy. Lows in the upper 50s. Southeast Winds around 5 Mph.

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Indianapolis International Airport Temperature Statistics

September Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 26 September, 2026

    52 °F

  • Average September

    75.6 °F

  • Highest 4 September, 2026

    97.6 °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

    65.3 °F
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