Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

A Few Clouds

81°F

27°C

Humidity 61%
Wind Speed SE 3 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 30 Jun 11:56 pm EDT
Extended Forecast for

Harrisburg 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: Partly cloudy, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Light west wind.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 104. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.

    High: 104 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 79. West wind around 6 mph becoming calm  in the evening.

    Low: 79 °F

    Clear

  • Friday

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

    High: 103 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • 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 30%.

    High: 100 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 74. Chance of precipitation is 40%.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 73. South wind 5 to 7 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 77. Light west wind.
Thursday
Sunny and hot, with a high near 104. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 79. West wind around 6 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 103.
Friday Night
Partly cloudy, with a low around 77.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. 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 72. 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 70. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg PA
 40.28°N 76.87°W (Elev. 394 ft)
11:56 pm EDT Jun 30, 2026
12am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database