Lake Charleston Weather Forecast

    • 29
    • 47

    Mostly Sunny

    • 41
    • 45

    Rain

    • 30
    • 51

    Chance Rain

    • 36
    • 44

    Mostly Cloudy

    • 36
    • 57

    Mostly Cloudy

    • 28
    • 51

    Partly Sunny

Today 29 Jan Coles

Sunny. Highs in the upper 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 29 Jan Coles

Mostly clear. Lows in the upper 20s. Southwest Winds around 5 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Charleston Temperature Statistics

January Temperature

Mattoon / Charleston, Coles County Memorial Airport (6.8 miles)

  • Lowest 15 January, 2025

    -2.1 °F

  • Average January

    21.4 °F

  • Highest 17 January, 2025

    44.7 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (6.8 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    64.2 °F
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