Casey Weather Forecast

    • 17
    • 25

    Becoming Sunny

    • 31
    • 37

    Partly Sunny

    • 35
    • 41

    Rain

    • 16
    • 52

    Chance Rain/Snow

    • 25
    • 30

    Partly Sunny

    • 32
    • 49

    Chance Rain

Today 15 Dec Clark

Sunny and not as cool. Near steady temperature in the mid 20s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 15 Dec Clark

Mostly clear and not as cool. Near steady temperature around 17. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Casey Temperature Statistics

December Temperature

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

  • Lowest 13 December, 2025

    1 °F

  • Average December

    25.4 °F

  • Highest 9 December, 2025

    43 °F

Climate (2020–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.5 °F
Get WillyWeather+ to remove ads