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.

A Few Clouds

61°F

16°C

Humidity 100%
Wind Speed NW 7 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 May 3:56 am EDT
Extended Forecast for

2 Miles ESE Hummelstown PA

Dense Fog Advisory until May 26, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until May 26, 08:00am

    NOW until 8:00am Tue

    Dense Fog Advisory

  • Overnight

    Low: 59 °F

    Areas Dense
    Fog

  • Tuesday

    Tuesday: Areas of dense fog before 10am. Otherwise, partly sunny, with a high near 79. Light and variable wind.

    High: 79 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly after 1am. Cloudy, with a low around 63. Light south wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then
    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before 3pm. Cloudy, with a high near 79. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 79 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61. West wind around 6 mph becoming northwest after midnight.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 59. Light northeast wind.
Tuesday
Areas of dense fog before 10am. Otherwise, partly sunny, with a high near 79. Light and variable wind.
Tuesday Night
Scattered showers, mainly after 1am. Cloudy, with a low around 63. Light south wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Scattered showers, mainly before 3pm. Cloudy, with a high near 79. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 61. West wind around 6 mph becoming northwest after midnight.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Hummelstown PA
 40.25°N 76.67°W (Elev. 627 ft)
Last Update:
3:31 am EDT May 26, 2026
Forecast Valid:
4am EDT May 26, 2026-6pm EDT Jun 1, 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