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.

Light Rain Fog/Mist

61°F

16°C

Humidity 93%
Wind Speed Vrbl 3 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 59°F (15°C)
Visibility 2.00 mi
Last update 4 Oct 2:56 pm EDT
Extended Forecast for

Hummelstown PA

  • This Afternoon

    This Afternoon: Areas of drizzle with a chance of light rain. Cloudy, with a high near 63. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Light
    Rain

  • Tonight

    Tonight: Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 69. Northwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. Northwest wind 5 to 8 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the morning.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
Areas of drizzle with a chance of light rain. Cloudy, with a high near 63. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Monday
Mostly sunny, with a high near 69. Northwest wind 6 to 15 mph, with gusts as high as 23 mph.
Monday Night
Clear, with a low around 44. Northwest wind 5 to 8 mph.
Tuesday
Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the morning.
Tuesday Night
Clear, with a low around 44.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.73°W (Elev. 335 ft)
Last Update:
2:20 pm EDT Oct 4, 2026
Forecast Valid:
3pm EDT Oct 4, 2026-6pm EDT Oct 11, 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