National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

75°F

24°C

Humidity 76%
Wind Speed E 3 mph
Barometer 30.11 in (1020.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Aug 12:53 am EDT
Extended Forecast for

Chambersburg PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1pm. High near 85. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 90. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Partly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm after 2pm. High near 89. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Mostly Sunny
    then Showers

  • Friday Night

    Friday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. Calm wind.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1pm. High near 85. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 90. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm after 2pm. High near 89. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 91.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Chambersburg PA
 39.93°N 77.66°W (Elev. 617 ft)
Last Update:
11:50 pm EDT Aug 4, 2026
Forecast Valid:
1am EDT Aug 5, 2026-6pm EDT Aug 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation