Lake Mattoon Weather Forecast

    • -4
    • 15

    Snow

    • -2
    • 9

    Cold

    • -2
    • 23

    Partly Sunny

    • -3
    • 18

    Mostly Cloudy

    • -1
    • 14

    Partly Sunny

    • -1
    • 14

    Partly Sunny

Today 25 Jan Shelby

Snow. Total snow accumulation of 6 to 10 Inches. Highs around 14. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow near 100 percent. Wind chill Values as low as 7 below.

Tonight 25 Jan Shelby

Mostly cloudy in the Evening, then clearing. Colder with Lows around 5 below. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 22 below.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mattoon Temperature Statistics

January Temperature

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

  • Lowest 19 January, 2026

    7 °F

  • Average January

    32.4 °F

  • Highest 8 January, 2026

    64.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    64.6 °F
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