National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Overcast

53°F

12°C

Humidity 96%
Wind Speed SE 7 mph
Barometer 29.75 in (1007.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 16 Mar 3:56 am EDT
Extended Forecast for

Hallam PA

Wind Advisory March 16, 12:00pm until March 16, 11:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: A chance of showers and thunderstorms. Cloudy, with a steady temperature around 58. Southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. Mostly cloudy, with a high near 66. Breezy, with a south wind 20 to 25 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Breezy.
    Chance
    Showers then
    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Rain showers and sleet before midnight, then a slight chance of rain and snow showers between midnight and 1am. Some thunder is also possible. Low around 27. Windy, with a west wind 22 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Little or no snow and sleet accumulation expected.

    Low: 27 °F

    Rain/Sleet
    and Windy
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 36. West wind around 18 mph, with gusts as high as 30 mph.

    High: 36 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. West wind 6 to 15 mph, with gusts as high as 21 mph.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Cloudy, with a steady temperature around 58. Southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. Mostly cloudy, with a high near 66. Breezy, with a south wind 20 to 25 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Rain showers and sleet before midnight, then a slight chance of rain and snow showers between midnight and 1am. Some thunder is also possible. Low around 27. Windy, with a west wind 22 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Little or no snow and sleet accumulation expected.
Tuesday
Partly sunny, with a high near 36. West wind around 18 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 23. West wind 6 to 15 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly cloudy, with a high near 46.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 55.
Friday Night
A chance of showers. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 54. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Partly 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:
3:36 am EDT Mar 16, 2026
Forecast Valid:
4am EDT Mar 16, 2026-6pm EDT Mar 22, 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