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.

Overcast

60°F

16°C

Humidity 90%
Wind Speed N 5 mph
Barometer 29.69 in (1005.4 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 23 Mar 12:56 am EDT
Extended Forecast for

Hummelstown PA

  • Overnight

    Overnight: Showers, mainly before 5am. Low around 42. North wind around 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 50. Northwest wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 49. North wind around 5 mph becoming light and variable.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. South wind 3 to 5 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.

    Low: 45 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers, mainly before 5am. Low around 42. North wind around 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 50. Northwest wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 30. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 49. North wind around 5 mph becoming light and variable.
Tuesday Night
Mostly cloudy, with a low around 33. South wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly cloudy, with a high near 62.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
Friday
Showers likely before 8am. Partly sunny, with a high near 54. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Mostly sunny, with a high near 53.
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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:
1:07 am EDT Mar 23, 2026
Forecast Valid:
1am EDT Mar 23, 2026-6pm EDT Mar 29, 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