Hazardous Weather Conditions
Current conditions at
Harrisburg, Harrisburg International Airport (KMDT)
Lat: 40.19°NLon: 76.76°WElev: 312ft.
Fog
39°F
4°C
| Humidity | 100% |
| Wind Speed | E 3 mph |
| Barometer | 29.52 in (999.9 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 0.50 mi |
| Last update | 29 Dec 3:56 am EST |
Extended Forecast for
Hallam PA
Wind Advisory December 29, 09:00am until December 30, 12:00pm
Dense Fog Advisory December 29, 04:29am until December 29, 08:00am
NOW until 8:00am Mon
Dense Fog Advisory
Overnight
Low: 33 °F
Chance
ShowersMonday
High: 52 °F⇓
Breezy.
Showers
Likely then
Mostly SunnyMonday Night
Low: 25 °F
Mostly Cloudy
and BreezyTuesday
High: 31 °F
Partly Sunny
and BreezyTuesday Night
Low: 24 °F
Mostly Cloudy
Wednesday
High: 36 °F
Mostly Cloudy
Wednesday Night
Low: 21 °F
Mostly Cloudy
New Year's Day
High: 27 °F
Mostly Sunny
Detailed Forecast
Overnight
A chance of showers, mainly after 5am. Cloudy, with a low around 33. South wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 52 by 9am, then falling to around 34 during the remainder of the day. Breezy, with a west wind 16 to 24 mph, with gusts as high as 49 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly cloudy, with a low around 25. Breezy, with a west wind around 24 mph, with gusts as high as 44 mph.
Tuesday
Partly sunny, with a high near 31. Breezy, with a west wind 20 to 23 mph, with gusts as high as 47 mph.
Tuesday Night
Mostly cloudy, with a low around 24. West wind 13 to 17 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 21.
New Year's Day
Mostly sunny, with a high near 27.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 31.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 33.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Hallam PA
40.02°N 76.6°W (Elev. 522 ft)
40.02°N 76.6°W (Elev. 522 ft)
4:16 am EST Dec 29, 2025
4am EST Dec 29, 2025-6pm EST Jan 4, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
