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.

Fair

28°C

82°F

Humidity 69%
Wind Speed Calm
Barometer 1016.8 mb (30.03 in)
Dewpoint 22°C (71°F)
Visibility 16 km
Heat Index30°C (86°F)
Last update 22 Jun 8:56 pm EDT
Extended Forecast for

Harrisburg International Airport PA

Extreme Heat Warning June 22, 09:04pm until June 25, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 22, 09:04pm until June 25, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Tonight

    Low: 24 °C

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 37. Heat index values as high as 40. Calm wind becoming northwest 5 to 10 km/h in the morning.

    High: 37 °C

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 24. Calm wind.

    Low: 24 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 37. Calm wind becoming northwest 5 to 10 km/h in the afternoon.

    High: 37 °C

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °C

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly sunny and hot, with a high near 34. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.

    High: 34 °C

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °C

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny and hot, with a high near 33. Chance of precipitation is 50%.

    High: 33 °C

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 24. West wind 3 to 8 km/h.
Monday
Sunny and hot, with a high near 37. Heat index values as high as 40. Calm wind becoming northwest 5 to 10 km/h in the morning.
Monday Night
Mostly clear, with a low around 24. Calm wind.
Tuesday
Sunny and hot, with a high near 37. Calm wind becoming northwest 5 to 10 km/h in the afternoon.
Tuesday Night
Mostly clear, with a low around 25. Calm wind.
Wednesday
A chance of showers after 2pm. Mostly sunny and hot, with a high near 34. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.
Wednesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Mostly sunny and hot, with a high near 33. Chance of precipitation is 50%.
Thursday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 23. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 30. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg International Airport PA
 40.2°N 76.77°W (Elev. 299 m)
Last Update:
8:29 pm EDT Jun 22, 2025
Forecast Valid:
9pm EDT Jun 22, 2025-6pm EDT Jun 29, 2025
 
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