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.

Partly Cloudy

24°F

-4°C

Humidity 57%
Wind Speed NW 9 mph
Barometer 29.93 in (1014.1 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 18 Jan 7:56 pm EST
Extended Forecast for

Hallam PA

  • Tonight

    Tonight: Partly cloudy, with a low around 17. West wind 6 to 9 mph.

    Low: 17 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 33. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Wind chill values as low as zero. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.

    Low: 11 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 21. Wind chill values as low as zero. West wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 21 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 9. West wind around 6 mph becoming light and variable after midnight.

    Low: 9 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 17. West wind 6 to 9 mph.
M.L.King Day
Mostly sunny, with a high near 33. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 38 mph.
Monday Night
Mostly clear, with a low around 11. Wind chill values as low as zero. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.
Tuesday
Sunny, with a high near 21. Wind chill values as low as zero. West wind 10 to 14 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 9. West wind around 6 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 30.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
A chance of snow showers. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Sunday
A chance of snow showers. Partly sunny, with a high near 20. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40.02°N 76.6°W (Elev. 522 ft)
Last Update:
7:58 pm EST Jan 18, 2026
Forecast Valid:
8pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
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