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 across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy

96°F

36°C

Humidity 49%
Wind Speed Calm
Barometer 29.99 in (1015.1 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 1 Jul 1:56 pm EDT
Extended Forecast for

Royalton PA

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

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. Light west wind.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 103. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.

    High: 103 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 78. West wind around 6 mph becoming calm  in the evening.

    Low: 78 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 102. Calm wind becoming west 5 to 9 mph in the morning.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 76. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

  • 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

This Afternoon
Sunny and hot, with a high near 99. Heat index values as high as 110. West wind around 6 mph.
Tonight
Mostly clear, with a low around 76. Light west wind.
Thursday
Sunny and hot, with a high near 103. Heat index values as high as 110. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 78. West wind around 6 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 102. Calm wind becoming west 5 to 9 mph in the morning.
Friday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
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 96. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Royalton PA
 40.2°N 76.74°W (Elev. 308 ft)
10:51 am EDT Jul 1, 2026
2pm EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
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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