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

60°F

16°C

Humidity 90%
Wind Speed N 5 mph
Barometer 29.69 in (1005.4 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 23 Mar 12:56 am EDT
Extended Forecast for

Hallam PA

  • Overnight

    Overnight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 43. North wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 50. Northwest wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 47. North wind around 6 mph becoming light and variable.

    High: 47 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. South wind 5 to 7 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Overnight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 43. North wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 50. Northwest wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 30. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 47. North wind around 6 mph becoming light and variable.
Tuesday Night
Mostly cloudy, with a low around 34. South wind 5 to 7 mph.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Mostly cloudy, with a high near 62.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Friday
Showers likely before 8am. Partly sunny, with a high near 54. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Mostly sunny, with a high near 52.
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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:
1:07 am EDT Mar 23, 2026
Forecast Valid:
1am EDT Mar 23, 2026-6pm EDT Mar 29, 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