Indianapolis International Airport Weather Forecast

    • 41
    • 57

    Mostly Sunny

    • 58
    • 75

    Thunderstorms

    • 57
    • 76

    Slight Chance Thunderstorms

    • 63
    • 80

    Rain Showers Likely

    • 53
    • 77

    Rain Showers Likely

    • 50
    • 69

    Chance Rain Showers

Today 20 Apr Marion

Patchy frost through early afternoon. Sunny. Highs in the upper 50s. North Winds around 5 Mph, becoming west around 5 Mph late in the afternoon.

Tonight 20 Apr Marion

Mostly clear. Lows in the lower 40s. South Winds 5 to 10 Mph.

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Indianapolis International Airport Temperature Statistics

April Temperature

Indianapolis International Airport (0.6 miles)

  • Lowest 7 April, 2026

    33.7 °F

  • Average April

    61.9 °F

  • Highest 14 April, 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

    55.6 °F

  • Average High 2021–2026

    65.1 °F
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