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

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Light Drizzle Fog/Mist

60°F

16°C

Humidity 93%
Wind Speed Calm
Barometer 30.11 in (1019.7 mb)
Dewpoint 58°F (14°C)
Visibility 2.00 mi
Last update 16 Jun 7:56 am EDT
Extended Forecast for

Hummelstown PA

  • Today

    Today: A chance of showers, mainly between 11am and 3pm. Cloudy, with a high near 69. East wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers, mainly after 1am. Cloudy, with a low around 61. East 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 possible.

    Low: 61 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 5pm. Cloudy, with a high near 77. Southeast wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 68. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. West wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly clear, with a low around 71. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
A chance of showers, mainly between 11am and 3pm. Cloudy, with a high near 69. East wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, mainly after 1am. Cloudy, with a low around 61. East 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 possible.
Tuesday
Showers likely, with thunderstorms also possible after 5pm. Cloudy, with a high near 77. Southeast wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 68. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. West wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly clear, with a low around 71. Chance of precipitation is 20%.
Juneteenth
A chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
Mostly sunny and hot, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.73°W (Elev. 335 ft)
Last Update:
7:15 am EDT Jun 16, 2025
Forecast Valid:
8am EDT Jun 16, 2025-6pm EDT Jun 22, 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