National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy

47°F

8°C

Humidity 69%
Wind Speed E 9 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 22 Apr 3:56 am EDT
Extended Forecast for

Harrisburg International Airport PA

  • Overnight

    Overnight: Isolated showers. Cloudy, with a low around 46. Southeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 46 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before 10am. Mostly cloudy, with a high near 69. Southeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Scattered
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 2am. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Showers

Detailed Forecast

Overnight
Isolated showers. Cloudy, with a low around 46. Southeast wind around 7 mph. Chance of precipitation is 20%.
Wednesday
Scattered showers, mainly before 10am. Mostly cloudy, with a high near 69. Southeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 48. Calm wind.
Thursday
Mostly sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 50. Calm wind.
Friday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Saturday
Showers. High near 55. Chance of precipitation is 80%.
Saturday Night
Showers, mainly before 2am. Low around 44. Chance of precipitation is 80%.
Sunday
A chance of showers before 8am. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 65.
Monday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Tuesday
Showers likely. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg International Airport PA
 40.2°N 76.77°W (Elev. 299 ft)
Last Update:
3:06 am EDT Apr 22, 2026
Forecast Valid:
4am EDT Apr 22, 2026-6pm EDT Apr 28, 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