Chambersburg Weather Forecast

    • 61
    • 84

    Decreasing Clouds

    • 68
    • 87

    Mostly Sunny

    • 61
    • 84

    Rain Showers Likely

    • 59
    • 79

    Partly Sunny

    • 64
    • 81

    Mostly Cloudy

    • 63
    • 84

    Partly Sunny

Today 8 Sep Franklin

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

Tonight 8 Sep Franklin

Partly cloudy. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Real-Time

Chambersburg Temperature Statistics

September Temperature

Hagerstown, Washington County Regional Airport (16.2 miles)

  • Lowest 5 September, 2026

    66.9 °F

  • Average September

    78.6 °F

  • Highest 1 September, 2026

    93.7 °F

Climate (2021–2026)

Hagerstown, Washington County Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    56.8 °F

  • Average High 2021–2026

    66 °F
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