Casey Weather Forecast

    • 67
    • 83

    Slight Chance Thunderstorms

    • 65
    • 82

    Slight Chance Thunderstorms

    • 66
    • 84

    Mostly Sunny

    • 68
    • 86

    Chance Thunderstorms

    • 71
    • 88

    Rain Showers Likely

    • 68
    • 84

    Rain Showers Likely

    • 66
    • 84

    Slight Chance Rain Showers

Today 5 Jul Clark

Partly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. Northwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 5 Jul Clark

Partly cloudy. A chance of Showers and Thunderstorms this evening. Lows in the upper 60s. North Winds around 5 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casey Temperature Statistics

July Temperature

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

  • Lowest 1 July, 2026

    75.7 °F

  • Average July

    83.6 °F

  • Highest 2 July, 2026

    92.6 °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

    55.4 °F

  • Average High 2021–2026

    65 °F
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