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 and Breezy

47°F

8°C

Humidity 37%
Wind Speed S 22 G 33 mph
Barometer 29.76 in (1008.0 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 13 Mar 2:56 pm EDT
Extended Forecast for

Hallam PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 38. Breezy, with a west wind 14 to 22 mph, with gusts as high as 39 mph.

    Low: 38 °F

    Partly Cloudy
    and Breezy
    then Clear

  • Saturday

    Saturday: Sunny, with a high near 49. West wind 14 to 16 mph, with gusts as high as 33 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. Northwest wind around 5 mph becoming calm.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 52. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 52 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 47. Southeast wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 64. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Rain and snow showers likely before 2am. Mostly cloudy, with a low around 29. Breezy. Chance of precipitation is 70%.

    Low: 29 °F

    Rain/Snow
    Likely and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Breezy.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 38. Breezy, with a west wind 14 to 22 mph, with gusts as high as 39 mph.
Saturday
Sunny, with a high near 49. West wind 14 to 16 mph, with gusts as high as 33 mph.
Saturday Night
Increasing clouds, with a low around 34. Northwest wind around 5 mph becoming calm.
Sunday
Mostly cloudy, with a high near 52. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Showers, mainly after 2am. Low around 47. Southeast wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers, with thunderstorms also possible after 2pm. High near 64. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain and snow showers likely before 2am. Mostly cloudy, with a low around 29. Breezy. Chance of precipitation is 70%.
Tuesday
Partly sunny, with a high near 34. Breezy.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 46.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40.02°N 76.6°W (Elev. 522 ft)
Last Update:
2:20 pm EDT Mar 13, 2026
Forecast Valid:
3pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation