Charleston Weather Forecast

    • 59
    • 80

    Slight Chance Thunderstorms

    • 63
    • 84

    Rain Showers

    • 58
    • 73

    Rain Showers

    • 57
    • 78

    Chance Thunderstorms

    • 58
    • 75

    Chance Rain Showers

    • 64
    • 76

    Chance Thunderstorms

    • 62
    • 80

    Chance Thunderstorms

Today 1 May Coles

Partly sunny. Near steady temperature in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 1 May Coles

Partly cloudy this Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 50s. North Winds around 5 Mph, becoming east after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Charleston Temperature Statistics

May Temperature

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

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Climate (2019–Present)

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

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  • Average Low 2019–2024

    45.9 °F

  • Average 2019–2024

    54.8 °F

  • Average High 2019–2024

    63.9 °F
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