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.

Mostly Cloudy

43°F

6°C

Humidity 38%
Wind Speed NW 20 G 28 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 12 Mar 5:56 pm EDT
Extended Forecast for

Hallam PA

  • Tonight

    Tonight: Mostly clear, with a low around 28. Northwest wind 6 to 15 mph, with gusts as high as 31 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 48. Breezy, with a south wind 7 to 12 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 48 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 36. West wind 14 to 17 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. West wind around 14 mph, with gusts as high as 25 mph.

    High: 50 °F

    Sunny

  • Saturday Night

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

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 64. Breezy. Chance of precipitation is 100%.

    High: 64 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: A chance of showers before 2am. Mostly cloudy, with a low around 29. Breezy. Chance of precipitation is 40%.

    Low: 29 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Mostly clear, with a low around 28. Northwest wind 6 to 15 mph, with gusts as high as 31 mph.
Friday
Increasing clouds, with a high near 48. Breezy, with a south wind 7 to 12 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.
Friday Night
Mostly clear, with a low around 36. West wind 14 to 17 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 50. West wind around 14 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 34. Northwest wind around 5 mph becoming calm.
Sunday
Mostly cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 49. Chance of precipitation is 90%.
Monday
Rain. High near 64. Breezy. Chance of precipitation is 100%.
Monday Night
A chance of showers before 2am. Mostly cloudy, with a low around 29. Breezy. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 35. Breezy.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 44.
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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:
3:03 pm EDT Mar 12, 2026
Forecast Valid:
6pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation