Illinois Natural History Survey Area Weather Forecast

    • 56
    • 84

    Becoming Sunny

    • 53
    • 77

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 50
    • 75

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

Today 23 Aug Moultrie

Partly sunny. A slight chance of Showers in the afternoon. Highs in the mid 80s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 23 Aug Moultrie

Partly cloudy in the Evening, then clearing. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Illinois Natural History Survey Area Temperature Statistics

August Temperature

Mattoon / Charleston, Coles County Memorial Airport (16.8 miles)

  • Lowest 3 August, 2025

    53.7 °F

  • Average August

    77.1 °F

  • Highest 16 August, 2025

    94.6 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (16.8 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.5 °F
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