Mercersburg Weather Forecast

    • 37
    • 77

    Severe Tstms

    • 36
    • 57

    Mostly Sunny

    • 51
    • 60

    Mostly Cloudy

    • 58
    • 78

    Rain Likely

    • 52
    • 72

    Rain Likely

    • 51
    • 65

    Rain Likely

Today 31 Mar Franklin

Numerous Showers with widespread Thunderstorms. Some Thunderstorms may be severe with damaging Winds. Continued Unseasonably warm with Highs in the mid 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.

Tonight 31 Mar Franklin

Mostly cloudy. Numerous rain Showers and scattered Thunderstorms in the evening. Some Thunderstorms may be severe with damaging Winds. Much cooler with Lows in the mid 30s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

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Mercersburg Temperature Statistics

March Temperature

Hagerstown, Washington County Regional Airport (12.4 miles)

  • Lowest 2 March, 2025

    17.9 °F

  • Average March

    48.6 °F

  • Highest 29 March, 2025

    81 °F

Climate (2020–Present)

Hagerstown, Washington County Regional Airport (12.4 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    65.6 °F
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