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

39°F

4°C

Humidity 82%
Wind Speed N 5 mph
Barometer 30.08 in (1018.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 30 Nov 5:56 pm EST
Extended Forecast for

Harrisburg International Airport PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 29. Southwest wind 10 to 14 mph becoming west in the evening. Winds could gust as high as 21 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 40. Northwest wind 5 to 10 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Snow likely after 1am. Increasing clouds, with a low around 27. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 27 °F

    Mostly Cloudy
    then Snow
    Likely

  • Tuesday

    Tuesday: Snow before 10am, then snow, possibly mixed with rain. The snow could be heavy at times. High near 37. Southeast wind 5 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 37 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Northwest wind 8 to 10 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Thursday Night

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

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 29. Southwest wind 10 to 14 mph becoming west in the evening. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 40. Northwest wind 5 to 10 mph.
Monday Night
Snow likely after 1am. Increasing clouds, with a low around 27. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Snow before 10am, then snow, possibly mixed with rain. The snow could be heavy at times. High near 37. Southeast wind 5 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Tuesday Night
Partly cloudy, with a low around 23. Northwest wind 8 to 10 mph.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Partly sunny, with a high near 30.
Friday Night
A chance of snow. Cloudy, with a low around 24. Chance of precipitation is 50%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Mostly cloudy, with a high near 39.
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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:
4:41 pm EST Nov 30, 2025
Forecast Valid:
6pm EST Nov 30, 2025-6pm EST Dec 7, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation