Charleston Weather Forecast

    • 45
    • 63

    Rain

    • 38
    • 52

    Mostly Cloudy

    • 20
    • 43

    Chance Rain

    • 22
    • 31

    Partly Sunny

    • 32
    • 42

    Mostly Sunny

    • 33
    • 48

    Mostly Cloudy

    • 21
    • 39

    Slight Chance Rain

Today 8 Jan Coles

Cloudy with a 50 percent chance of rain. Highs in the lower 60s. South Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 8 Jan Coles

Rain with a chance of Thunderstorms this Evening, then rain likely with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce gusty Winds this evening. Some Thunderstorms may produce gusty Winds after midnight. Breezy with Lows in the mid 40s. South Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Temperature Statistics

January Temperature

Mattoon / Charleston, Coles County Memorial Airport (5.6 miles)

  • Lowest 4 January, 2026

    21.9 °F

  • Average January

    33.9 °F

  • Highest 6 January, 2026

    54 °F

Climate (2021–Present)

Mattoon / Charleston, Coles County Memorial Airport (5.6 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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