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.

Mostly Cloudy

87°F

31°C

Humidity 34%
Wind Speed W 14 G 25 mph
Barometer 29.76 in (1007.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Apr 3:56 pm EDT
Extended Forecast for

Hallam PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Increasing clouds, with a low around 64. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 77. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. North wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. South wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 47. Southeast wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 30%.

    Low: 36 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Increasing clouds, with a low around 64. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 77. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 56. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 79. South wind 6 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 47. Southeast wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 30%.
Monday
Sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 68.
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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:
2:51 pm EDT Apr 16, 2026
Forecast Valid:
4pm EDT Apr 16, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation