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

97°F

36°C

Humidity 40%
Wind Speed SW 6 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 2 Jul 3:53 pm EDT
Extended Forecast for

Chambersburg PA

Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 2, 04:47pm until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning July 2, 04:47pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Tonight

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101. Heat index values as high as 109. Calm wind becoming west around 6 mph in the afternoon.

    High: 101 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. West wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Independence Day

    Independence Day: A slight chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

    High: 100 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 93. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 93 °F

    Slight Chance
    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 70. Chance of precipitation is 80%.

    Low: 70 °F

    T-storms then
    Showers
    Likely

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

Detailed Forecast

Tonight
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 101. Heat index values as high as 109. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 76. West wind around 5 mph becoming calm in the evening.
Independence Day
A slight chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 93. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 70. Chance of precipitation is 80%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Chambersburg PA
 39.93°N 77.66°W (Elev. 617 ft)
Last Update:
3:29 pm EDT Jul 2, 2026
Forecast Valid:
4pm EDT Jul 2, 2026-6pm EDT Jul 9, 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