Chatham-Arch Weather Forecast

    • 58
    • 84

    Increasing Clouds

    • 39
    • 67

    Rain Showers

    • 35
    • 58

    Mostly Sunny

    • 47
    • 61

    Mostly Sunny

    • 57
    • 76

    Partly Sunny

    • 54
    • 76

    Slight Chance Thunderstorms

Today 17 Apr Marion

Sunny toward Daybreak, then becoming partly cloudy. Highs in the mid 80s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 17 Apr Marion

Partly cloudy through the late Overnight, then becoming mostly cloudy. Scattered Thunderstorms. Scattered Showers through the late Overnight, then Showers toward daybreak. Lows in the upper 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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Chatham-Arch Temperature Statistics

April Temperature

Indianapolis International Airport (8.1 miles)

  • Lowest 7 April, 2026

    33.7 °F

  • Average April

    58.7 °F

  • Highest 12 April, 2026

    80.7 °F

Climate (2021–Present)

Indianapolis International Airport (8.1 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    65 °F
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