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

60°F

16°C

Humidity 100%
Wind Speed Calm
Barometer 29.88 in (1011.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 14 Oct 4:56 am EDT
Extended Forecast for

Hummelstown PA

  • Today

    Today: Scattered showers, mainly before noon. Increasing clouds, with a high near 82. West wind 5 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 82 °F

    Scattered
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. North wind 6 to 9 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68. North wind around 5 mph becoming light and variable in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 56. Southeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly after 2pm. High near 79. South wind 10 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 79 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Breezy.
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55. Breezy.

    High: 55 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Areas Frost
    then Sunny

Detailed Forecast

Today
Scattered showers, mainly before noon. Increasing clouds, with a high near 82. West wind 5 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 54. North wind 6 to 9 mph.
Thursday
Mostly sunny, with a high near 68. North wind around 5 mph becoming light and variable in the afternoon.
Thursday Night
Showers, mainly after 2am. Low around 56. Southeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, mainly after 2pm. High near 79. South wind 10 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers before 8pm. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 55. Breezy.
Saturday Night
Areas of frost after 4am. Otherwise, mostly clear, with a low around 36.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.28°N 76.7°W (Elev. 397 ft)
Last Update:
2:56 am EDT Oct 14, 2026
Forecast Valid:
5am EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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