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.

Fair

74°F

23°C

Humidity 82%
Wind Speed Calm
Barometer 29.88 in (1011.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 2 Jul 9:56 pm EDT
Extended Forecast for

Hummelstown PA

  • Tonight

    Tonight: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny, with a high near 88. Calm wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 30%.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Northwest wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 84. North wind 3 to 7 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Saturday Night

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

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 66. Calm wind.
Thursday
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny, with a high near 88. Calm wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 63. Northwest wind around 6 mph becoming calm in the evening.
Independence Day
Sunny, with a high near 84. North wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 61. Calm wind.
Saturday
Sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
3:38 pm EDT Jul 2, 2025
Forecast Valid:
10pm EDT Jul 2, 2025-6pm EDT Jul 9, 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