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

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

70°F

21°C

Humidity 73%
Wind Speed NW 13 G 17 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 May 8:56 am EDT
Extended Forecast for

Summerdale PA

  • Today

    Today: A chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 93. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South wind 3 to 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 93. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 88. Chance of precipitation is 80%.

    High: 88 °F

    Mostly Sunny
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Partly cloudy, with a low around 64. Calm wind.
Monday
Sunny and hot, with a high near 93. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 68. South wind 3 to 5 mph.
Tuesday
Mostly sunny and hot, with a high near 93. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 88. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerdale PA
 40.31°N 76.95°W (Elev. 495 ft)
Last Update:
8:01 am EDT May 17, 2026
Forecast Valid:
9am EDT May 17, 2026-6pm EDT May 23, 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