National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
News Headlines

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy

5°F

-15°C

Humidity 63%
Wind Speed NW 6 mph
Barometer 30.25 in (1025.1 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 31 Jan 12:56 am EST
Extended Forecast for

Hummelstown PA

Cold Weather Advisory January 31, 07:00pm until February 1, 10:00am
Cold Weather Advisory January 31, 01:39am until January 31, 11:00am
Click here for hazard details and duration
Cold Weather Advisory
Cold Weather Advisory
  •  
    Cold Weather Advisory January 31, 01:39am until January 31, 11:00am

    NOW until 11:00am Sat

    Cold Weather Advisory

  • Overnight

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 20. Wind chill values as low as -10. West wind 3 to 8 mph.

    High: 20 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 8. Wind chill values as low as -5. North wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 8 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 25. Wind chill values as low as -10. Northwest wind 15 to 18 mph, with gusts as high as 31 mph.

    High: 25 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 12. Northwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 12 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around -2. Wind chill values as low as -10. Light west wind.
Saturday
Mostly sunny, with a high near 20. Wind chill values as low as -10. West wind 3 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 8. Wind chill values as low as -5. North wind 6 to 14 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 25. Wind chill values as low as -10. Northwest wind 15 to 18 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 12. Northwest wind 13 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Partly sunny, with a high near 30.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
1:05 am EST Jan 31, 2026
Forecast Valid:
1am EST Jan 31, 2026-6pm EST Feb 6, 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