Chambersburg Weather Forecast

    • 60
    • 78

    Slight Chance Rain Showers

    • 61
    • 79

    Mostly Cloudy

    • 61
    • 82

    Mostly Cloudy

    • 53
    • 80

    Mostly Sunny

    • 53
    • 77

    Partly Sunny

    • 52
    • 74

    Partly Sunny

Today 25 May Franklin

Mostly cloudy. Patchy fog this morning. Showers Likely, mainly this morning. Much warmer with Highs in the upper 70s. Southwest Winds around 5 Mph, becoming north this afternoon. Chance of rain 70 percent.

Tonight 25 May Franklin

Mostly cloudy. A slight chance of Showers in the evening. Patchy fog. Lows in the upper 50s. Light and variable Winds, becoming north around 5 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chambersburg Temperature Statistics

May Temperature

Hagerstown, Washington County Regional Airport (16.2 miles)

  • Lowest 3 May, 2026

    36.6 °F

  • Average May

    62.4 °F

  • Highest 18 May, 2026

    95.6 °F

Climate (2021–Present)

Hagerstown, Washington County Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    56.8 °F

  • Average High 2021–2026

    66 °F
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