Mercerville-Hamilton Square Weather Forecast

    • 59
    • 82

    Decreasing Clouds

    • 60
    • 84

    Partly Sunny

    • 58
    • 82

    Partly Sunny

    • 57
    • 81

    Partly Sunny

    • 58
    • 80

    Mostly Cloudy

    • 59
    • 80

    Partly Sunny

Today 13 Sep Mercer

Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. Light and variable Winds, becoming southwest around 5 Mph in the afternoon.

Tonight 13 Sep Mercer

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 50s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mercerville-Hamilton Square Temperature Statistics

September Temperature

Trenton, Mercer County Airport (8.1 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    67.1 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Trenton, Mercer County Airport (8.1 miles)

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

  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    64.4 °F
Get WillyWeather+ to remove ads