Chambersburg Weather Forecast

    • 68
    • 89

    Partly Sunny

    • 62
    • 85

    Mostly Sunny

    • 66
    • 86

    Chance Rain Showers

    • 62
    • 82

    Rain Showers Likely

    • 64
    • 80

    Chance Rain Showers

    • 64
    • 80

    Chance Rain Showers

    • 61
    • 81

    Chance Rain Showers

Today 17 Aug Franklin

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 17 Aug Franklin

Mostly cloudy with a slight chance of Showers and Thunderstorms this Evening, then partly cloudy after midnight. Lows in the upper 60s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chambersburg Temperature Statistics

August Temperature

Hagerstown, Washington County Regional Airport (16.2 miles)

  • Lowest 15 August, 2026

    64 °F

  • Average August

    78.2 °F

  • Highest 6 August, 2026

    91.7 °F

Climate (2021–2026)

Hagerstown, Washington County Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    66 °F
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