Casey Municipal Airport Weather Forecast

    • 66
    • 84

    Becoming Sunny

    • 69
    • 83

    Thunderstorms Likely

    • 59
    • 83

    Rain Showers

    • 48
    • 68

    Mostly Cloudy

    • 54
    • 69

    Mostly Cloudy

    • 60
    • 74

    Chance Rain Showers

    • 62
    • 79

    Slight Chance Thunderstorms

Today 17 May Clark

Mostly sunny and warmer. Near steady temperature in the mid 80s. South Winds around 15 Mph with Gusts up to 30 Mph.

Tonight 17 May Clark

Mostly clear. Lows in the mid 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casey Municipal Airport Temperature Statistics

May Temperature

Mattoon / Charleston, Coles County Memorial Airport (18.6 miles)

  • Lowest 7 May, 2026

    38.6 °F

  • Average May

    56.8 °F

  • Highest 12 May, 2026

    78.7 °F

Climate (2021–Present)

Mattoon / Charleston, Coles County Memorial Airport (18.6 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    65 °F
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