Johnstown Weather Forecast

    • 44
    • 62

    Chance Rain Showers

    • 38
    • 57

    Partly Sunny

    • 38
    • 57

    Partly Sunny

    • 50
    • 67

    Chance Rain Showers

    • 48
    • 73

    Chance Rain Showers

    • 52
    • 70

    Chance Rain Showers

Today 30 Apr Cumberland

Sunny. Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 30 Apr Cumberland

Mostly cloudy with a 50 percent chance of Showers. Lows in the mid 40s. Northwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnstown Temperature Statistics

April Temperature

Mattoon / Charleston, Coles County Memorial Airport (7.5 miles)

  • Lowest 7 April, 2026

    35.7 °F

  • Average April

    60.2 °F

  • Highest 14 April, 2026

    82.7 °F

Climate (2021–Present)

Mattoon / Charleston, Coles County Memorial Airport (7.5 miles)

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

  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    64.9 °F
Get WillyWeather+ to remove ads