Hazardous Weather Conditions
Current conditions at
Harrisburg, Harrisburg International Airport (KMDT)
Lat: 40.19°NLon: 76.76°WElev: 312ft.
Overcast
72°F
22°C
| Humidity | 79% |
| Wind Speed | SE 10 mph |
| Barometer | 29.76 in (1007.6 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 4 Sep 6:56 pm EDT |
Extended Forecast for
Hummelstown PA
Tonight
Low: 62 °F
Showers
Likely then
Slight Chance
ShowersFriday
High: 86 °F
Decreasing
CloudsFriday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 83 °F
Chance
Showers then
ShowersSaturday Night
Low: 57 °F
Showers then
Chance
ShowersSunday
High: 75 °F
Mostly Sunny
Sunday Night
Low: 50 °F
Mostly Clear
Monday
High: 74 °F
Sunny
Monday Night
Low: 48 °F
Mostly Clear
Detailed Forecast
Tonight
Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 62. South wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 86. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 66. South wind 3 to 6 mph.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Calm wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers. Low around 57. Northwest wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Hummelstown PA
40.26°N 76.73°W (Elev. 335 ft)
40.26°N 76.73°W (Elev. 335 ft)
1:05 pm EDT Sep 4, 2025
7pm EDT Sep 4, 2025-6pm EDT Sep 11, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
