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

23°F

-5°C

Humidity 65%
Wind Speed NW 7 mph
Barometer 29.95 in (1014.8 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 18 Jan 6:56 pm EST
Extended Forecast for

Harrisburg International Airport PA

  • Tonight

    Tonight: Partly cloudy, with a low around 18. Northwest wind 5 to 8 mph.

    Low: 18 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 34. Breezy, with a south wind 6 to 11 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 34 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Wind chill values as low as zero. Breezy, with a west wind 10 to 20 mph, with gusts as high as 32 mph.

    Low: 11 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22. Wind chill values as low as zero. West wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 8. West wind around 6 mph becoming calm in the evening.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 18. Northwest wind 5 to 8 mph.
M.L.King Day
Increasing clouds, with a high near 34. Breezy, with a south wind 6 to 11 mph becoming west 16 to 21 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 10 to 20 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 22. 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 8. West wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 30.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
A chance of snow showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Sunday
A chance of snow showers. Partly sunny, with a high near 21. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg International Airport PA
 40.2°N 76.77°W (Elev. 299 ft)
Last Update:
7:33 pm EST Jan 18, 2026
Forecast Valid:
7pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
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