Casey Weather Forecast

    • 64
    • 77

    Slight Chance Rain Showers

    • 51
    • 80

    Thunderstorms Likely

    • 40
    • 59

    Partly Sunny

    • 36
    • 60

    Sunny

    • 40
    • 66

    Mostly Sunny

    • 45
    • 72

    Partly Sunny

    • 47
    • 75

    Mostly Sunny

Today 14 Oct Clark

Mostly clear. Lows in the mid 40s. Highs in the upper 70s.

Tonight 14 Oct Clark

Mostly cloudy. Near steady temperature in the mid 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casey Temperature Statistics

October Temperature

Mattoon / Charleston, Coles County Memorial Airport (19.3 miles)

  • Lowest 3 October, 2026

    43.6 °F

  • Average October

    66.9 °F

  • Highest 1 October, 2026

    89.7 °F

Climate (2021–2026)

Mattoon / Charleston, Coles County Memorial Airport (19.3 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.1 °F
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