Hazardous Weather Conditions
Current conditions at
Harrisburg, Harrisburg International Airport (KMDT)
Lat: 40.19°NLon: 76.76°WElev: 312ft.
Fair
62°F
17°C
| Humidity | 86% |
| Wind Speed | NW 6 mph |
| Barometer | 30.07 in (1018.3 mb) |
| Dewpoint | 58°F (14°C) |
| Visibility | 10.00 mi |
| Last update | 21 Aug 4:56 am EDT |
Extended Forecast for
Hallam PA
Today
High: 81 °F
Dense Fog
then SunnyTonight
Low: 64 °F
Mostly Cloudy
Saturday
High: 78 °F
Showers
LikelySaturday Night
Low: 64 °F
Chance
Showers and
Patchy FogSunday
High: 82 °F
Slight Chance
Showers then
Slight Chance
T-stormsSunday Night
Low: 60 °F
Mostly Clear
Monday
High: 80 °F
Sunny
Monday Night
Low: 59 °F
Mostly Clear
Tuesday
High: 78 °F
Sunny
Detailed Forecast
Today
Widespread dense fog before 11am. Otherwise, sunny, with a high near 81. North wind around 6 mph becoming light and variable in the afternoon.
Tonight
Mostly cloudy, with a low around 64. Calm wind.
Saturday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. Southeast wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Light southwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Thursday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Hallam PA
40°N 76.6°W (Elev. 364 ft)
40°N 76.6°W (Elev. 364 ft)
5:06 am EDT Aug 21, 2026
5am EDT Aug 21, 2026-6pm EDT Aug 27, 2026
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