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.

Fog/Mist

45°F

7°C

Humidity 97%
Wind Speed Calm
Barometer 30.19 in (1022.6 mb)
Dewpoint 44°F (7°C)
Visibility 1.50 mi
Last update 5 Mar 10:56 am EST
Extended Forecast for

Hallam PA

  • Today

    Today: Rain, mainly after 3pm. High near 49. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 3am, then a slight chance of rain between 3am and 4am. Low around 40. East wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 40 °F

    Rain then
    Rain Likely

  • Friday

    Friday: Cloudy, with a high near 50. East wind around 6 mph.

    High: 50 °F

    Cloudy

  • Friday Night

    Friday Night: A slight chance of rain. Cloudy, with a low around 43. Southeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 64. South wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Cloudy then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely before 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Today
Rain, mainly after 3pm. High near 49. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain and possibly a thunderstorm before 3am, then a slight chance of rain between 3am and 4am. Low around 40. East wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday
Cloudy, with a high near 50. East wind around 6 mph.
Friday Night
A slight chance of rain. Cloudy, with a low around 43. Southeast wind around 7 mph. Chance of precipitation is 20%.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 64. South wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely before 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 40%.
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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:
7:06 am EST Mar 5, 2026
Forecast Valid:
11am EST Mar 5, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation