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

Hazardous Weather Conditions

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

71°F

22°C

Humidity 79%
Wind Speed Calm
Barometer 30.13 in (1020.1 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Jun 6:56 am EDT
Extended Forecast for

Summerdale PA

Extreme Heat Warning June 22, 11:00am until June 25, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Increasing clouds, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 90 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 71. South wind 3 to 5 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 96. Heat index values as high as 103. West wind 3 to 8 mph.

    High: 96 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. West wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. Calm wind becoming west around 6 mph in the afternoon.

    High: 98 °F

    Hot

  • Monday Night

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

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 2pm. Sunny and hot, with a high near 95. Chance of precipitation is 30%.

    High: 95 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 71. South wind 3 to 5 mph.
Sunday
Sunny and hot, with a high near 96. Heat index values as high as 103. West wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 75. West wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 98. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
A chance of showers after 2pm. Sunny and hot, with a high near 95. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summerdale PA
 40.29°N 76.98°W (Elev. 417 ft)
Last Update:
3:59 am EDT Jun 21, 2025
Forecast Valid:
7am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
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