Mercer Weather Forecast

    • 7
    • 29

    Partly Sunny

    • 16
    • 30

    Partly Sunny

    • 22
    • 33

    Chance Snow

    • 15
    • 33

    Chance Snow

    • 9
    • 25

    Mostly Cloudy

    • 23
    • 32

    Snow

    • 21
    • 36

    Rain/Snow

Today 4 Dec Mercer

Partly sunny. Highs in the upper 20s. Temperatures falling into the lower 20s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 4 Dec Mercer

Patchy fog early this evening. Mainly clear. Very cold with Lows around 7 above. East Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mercer Temperature Statistics

December Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 1 December, 2025

    21.9 °F

  • Average December

    29.3 °F

  • Highest 1 December, 2025

    33.1 °F

Climate (2020–Present)

New Castle, New Castle Municipal Airport (16.2 miles)

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

  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    61.1 °F
Get WillyWeather+ to remove ads