Chambersburg Weather Forecast

    • 55
    • 73

    Decreasing Clouds

    • 59
    • 80

    Partly Sunny

    • 63
    • 84

    Partly Sunny

    • 59
    • 84

    Mostly Cloudy

    • 55
    • 69

    Chance Rain Showers

    • 52
    • 69

    Rain Showers Likely

Today 29 Sep Franklin

Patchy fog in the morning. Mostly cloudy. Highs in the lower 70s. Northwest Winds around 5 Mph.

Tonight 29 Sep Franklin

Mostly cloudy in the Evening, then clearing. Patchy fog after midnight. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chambersburg Temperature Statistics

September Temperature

Hagerstown, Washington County Regional Airport (16.2 miles)

  • Lowest 25 September, 2026

    43.6 °F

  • Average September

    70.6 °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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