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.

Fog/Mist

35°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 30.22 in (1023.8 mb)
Dewpoint 35°F (2°C)
Visibility 0.75 mi
Last update 3 Mar 8:56 pm EST
Extended Forecast for

Hummelstown PA

  • Tonight

    Tonight: Rain likely, mainly before 2am. Patchy fog after midnight. Otherwise, cloudy, with a low around 34. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of showers after 2pm. Areas of fog before 9am. Otherwise, cloudy, with a high near 54. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Areas Fog
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly after 1am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 58. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 48. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers

  • Friday

    Friday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 40%.

    High: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely before 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely

Detailed Forecast

Tonight
Rain likely, mainly before 2am. Patchy fog after midnight. Otherwise, cloudy, with a low around 34. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of showers after 2pm. Areas of fog before 9am. Otherwise, cloudy, with a high near 54. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers, mainly after 1am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 58. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm. Low around 48. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Partly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 40%.
Saturday Night
Showers likely before 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 71.
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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:
8:36 pm EST Mar 3, 2026
Forecast Valid:
9pm EST Mar 3, 2026-6pm EDT Mar 10, 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