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

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy

38°F

3°C

Humidity 73%
Wind Speed SE 5 mph
Barometer 30.02 in (1016.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 17 Jan 2:56 pm EST
Extended Forecast for

Hallam PA

Winter Weather Advisory January 18, 03:00am until January 18, 03:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A chance of snow showers between 3am and 5am, then a chance of snow after 5am. Increasing clouds, with a low around 28. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 28 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: A chance of snow, mainly before 4pm. Cloudy, with a high near 31. Northwest wind 5 to 8 mph. Chance of precipitation is 50%. New snow accumulation of around an inch possible.

    High: 31 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. West wind around 7 mph.

    Low: 17 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 32. Southwest wind 7 to 15 mph, with gusts as high as 30 mph.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. West wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow showers between 3am and 5am, then a chance of snow after 5am. Increasing clouds, with a low around 28. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Sunday
A chance of snow, mainly before 4pm. Cloudy, with a high near 31. Northwest wind 5 to 8 mph. Chance of precipitation is 50%. New snow accumulation of around an inch possible.
Sunday Night
Partly cloudy, with a low around 17. West wind around 7 mph.
M.L.King Day
Mostly sunny, with a high near 32. Southwest wind 7 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 11. West wind 11 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40.02°N 76.6°W (Elev. 522 ft)
Last Update:
2:31 pm EST Jan 17, 2026
Forecast Valid:
3pm EST Jan 17, 2026-6pm EST Jan 24, 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