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

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

77°F

25°C

Humidity 74%
Wind Speed S 6 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 1 Jul 1:53 am EDT
Extended Forecast for

Chambersburg PA

Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 1, 12:00pm until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning

  • Overnight

    Overnight: Mostly clear, with a low around 72. South wind 3 to 5 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Light and variable wind.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 103. Heat index values as high as 110. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 103 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. West wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 103.

    High: 103 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 40%.

    High: 100 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 72. South wind 3 to 5 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 75. Light and variable wind.
Thursday
Sunny and hot, with a high near 103. Heat index values as high as 110. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 77. West wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 103.
Friday Night
Mostly clear, with a low around 76.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 97. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 92. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chambersburg PA
 39.93°N 77.66°W (Elev. 617 ft)
Last Update:
2:20 am EDT Jul 1, 2026
Forecast Valid:
2am EDT Jul 1, 2026-6pm EDT Jul 7, 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