Chambersburg Weather Forecast

    • 33
    • 39

    Rain

    • 36
    • 46

    Rain

    • 22
    • 41

    Partly Sunny

    • 35
    • 42

    Slight Chance Rain

    • 33
    • 57

    Mostly Cloudy

    • 26
    • 43

    Mostly Cloudy

Today 30 Jan Mercer

Sunny, cooler with Highs in the upper 30s. West Winds around 5 Mph.

Tonight 30 Jan Mercer

Mostly cloudy. Rain likely after midnight. Cold with Lows in the lower 30s. Temperature rising into the upper 30s after midnight. South Winds 5 to 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

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Chambersburg Temperature Statistics

January Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 22 January, 2025

    2.8 °F

  • Average January

    27.6 °F

  • Highest 1 January, 2025

    48.7 °F

Climate (2020–Present)

Trenton, Mercer County Airport (5.6 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    64.3 °F
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