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

47°F

8°C

Humidity 80%
Wind Speed Calm
Barometer 29.98 in (1015.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 10 Nov 11:56 pm EST
Extended Forecast for

Hummelstown PA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 39. Light west wind.

    Low: 39 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 66. Calm wind becoming southwest around 5 mph.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers before midnight, then a chance of showers after 1am. Cloudy, with a low around 46. Southeast wind 3 to 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 59. East wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 36. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly before 1pm. Partly sunny, with a high near 49. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 39. Light west wind.
Veterans Day
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Wednesday Night
A chance of showers before midnight, then a chance of showers after 1am. Cloudy, with a low around 46. Southeast wind 3 to 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 59. East wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 36. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, mainly before 1pm. Partly sunny, with a high near 49. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Partly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 53.
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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:
11:00 pm EST Nov 10, 2026
Forecast Valid:
12am EST Nov 11, 2026-6pm EST Nov 17, 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