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

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Overcast

52°F

11°C

Humidity 83%
Wind Speed E 3 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 13 Apr 4:56 am EDT
Extended Forecast for

Hummelstown PA

  • Today

    Today: A slight chance of showers between 11am and 1pm. Mostly cloudy, with a high near 79. South wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 58. West wind 5 to 8 mph becoming calm after midnight.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. West wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 87. West wind 5 to 11 mph. Chance of precipitation is 30%.

    High: 87 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers between 11am and 1pm. Mostly cloudy, with a high near 79. South wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 58. West wind 5 to 8 mph becoming calm after midnight.
Tuesday
A slight chance of showers after 2pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. West wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 87. West wind 5 to 11 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 87.
Thursday Night
Mostly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
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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:
2:57 am EDT Apr 13, 2026
Forecast Valid:
5am EDT Apr 13, 2026-6pm EDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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