Colwyn Weather Forecast

    • 28
    • 42

    Gradual Clearing

    • 27
    • 42

    Mostly Cloudy

    • 19
    • 34

    Partly Sunny

    • 29
    • 36

    Mostly Cloudy

    • 35
    • 46

    Chance Rain

    • 29
    • 44

    Chance Rain

Today 6 Dec Delaware

Mostly cloudy. Not as cool with Highs in the lower 40s. West Winds around 5 Mph.

Tonight 6 Dec Delaware

Partly cloudy in the Evening, then clearing. Cold with Lows in the upper 20s. West Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Colwyn Temperature Statistics

December Temperature

Philadelphia, Philadelphia International Airport (2.5 miles)

  • Lowest 2 December, 2025

    32 °F

  • Average December

    38 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (2.5 miles)

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

  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    58.4 °F

  • Average High 2020–2025

    66.9 °F
Get WillyWeather+ to remove ads