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

42°F

6°C

Humidity 76%
Wind Speed Calm
Barometer 30.17 in (1021.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 20 Nov 2:56 pm EST
Extended Forecast for

Hallam PA

  • Tonight

    Tonight: Cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Cloudy

  • Friday

    Friday: A chance of rain, mainly between 1pm and 4pm. Mostly cloudy, with a high near 56. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain, mainly after 7pm. Low around 44. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Rain

  • Saturday

    Saturday: A chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 39. Calm wind.
Friday
A chance of rain, mainly between 1pm and 4pm. Mostly cloudy, with a high near 56. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
Rain, mainly after 7pm. Low around 44. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Partly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
A chance of showers. Cloudy, with a high near 56. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 38.
Thanksgiving Day
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40°N 76.6°W (Elev. 364 ft)
Last Update:
1:33 pm EST Nov 20, 2025
Forecast Valid:
3pm EST Nov 20, 2025-6pm EST Nov 27, 2025
 
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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