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

35°F

2°C

Humidity 70%
Wind Speed SE 7 mph
Barometer 30.26 in (1025.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Mar 8:56 am EDT
Extended Forecast for

Hallam PA

  • Today

    Today: Mostly cloudy, with a high near 51. Southwest wind around 7 mph.

    High: 51 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 34. Light and variable wind.

    Low: 34 °F

    Decreasing
    Clouds

  • Friday

    Friday: A chance of showers after 2pm. Partly sunny, with a high near 61. Light south wind increasing to 8 to 13 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers, mainly before 2am. Low around 45. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 61. Northwest wind 7 to 9 mph.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely before 8am. Partly sunny, with a high near 50. Chance of precipitation is 60%.

    High: 50 °F

    Showers
    Likely then
    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 51. Southwest wind around 7 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 34. Light and variable wind.
Friday
A chance of showers after 2pm. Partly sunny, with a high near 61. Light south wind increasing to 8 to 13 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers, mainly before 2am. Low around 45. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 61. Northwest wind 7 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 67.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Monday
Showers likely before 8am. Partly sunny, with a high near 50. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40.02°N 76.6°W (Elev. 522 ft)
Last Update:
8:06 am EDT Mar 19, 2026
Forecast Valid:
9am EDT Mar 19, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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