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.

Mostly Cloudy

55°F

13°C

Humidity 96%
Wind Speed Calm
Barometer 29.98 in (1015.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 4 Nov 9:56 pm EST
Extended Forecast for

Hummelstown PA

  • Tonight

    Tonight: Rain, mainly after 4am. Low around 61. Light south wind increasing to 5 to 9 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Mostly Cloudy
    then Rain

  • Thursday

    Thursday: Rain before 11am, then a chance of showers after 1pm. High near 74. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 74 °F

    Rain then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 11pm. Mostly cloudy, with a low around 55. Southwest 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: 55 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 69. Calm wind becoming west around 5 mph.

    High: 69 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. Calm wind becoming northwest 5 to 8 mph after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 1pm. Mostly sunny, with a high near 59. Chance of precipitation is 20%.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain, mainly after 4am. Low around 61. Light south wind increasing to 5 to 9 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain before 11am, then a chance of showers after 1pm. High near 74. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers before 11pm. Mostly cloudy, with a low around 55. Southwest 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.
Friday
Partly sunny, with a high near 69. Calm wind becoming west around 5 mph.
Friday Night
Mostly cloudy, with a low around 46. Calm wind becoming northwest 5 to 8 mph after midnight.
Saturday
A slight chance of showers after 1pm. Mostly sunny, with a high near 59. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 38.
Veterans Day
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
9:51 pm EST Nov 4, 2026
Forecast Valid:
10pm EST Nov 4, 2026-6pm EST Nov 11, 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