Lake Mattoon Weather Forecast

    • 32
    • 60

    Sunny

    • 41
    • 61

    Mostly Cloudy

    • 45
    • 60

    Slight Chance Rain Showers

    • 46
    • 62

    Chance Rain Showers

    • 46
    • 61

    Chance Rain Showers

    • 42
    • 61

    Chance Rain Showers

Today 23 Oct Shelby

Sunny. Highs around 60. Northwest Winds 5 to 10 Mph.

Tonight 23 Oct Shelby

Mostly clear. Widespread frost after midnight. Lows in the lower 30s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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Lake Mattoon Temperature Statistics

October Temperature

Mattoon / Charleston, Coles County Memorial Airport (13 miles)

  • Lowest 9 October, 2025

    39.9 °F

  • Average October

    64 °F

  • Highest 3 October, 2025

    88 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (13 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    64.7 °F
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