Isolated Severe Thunderstorms and Critical Fire Weather Tuesday

Isolated severe thunderstorms with strong wind gusts and hail will be possible Tuesday from parts of central Plains northeastward into the Midwest. Additional storms capable of damaging winds will be possible across the eastern Florida peninsula. Elevated to critical fire weather including gusty winds and low relative humidity is forecast again Tuesday over much of the northern Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Fair

41°F

5°C

Humidity 79%
Wind Speed NW 5 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 May 4:56 am EDT
Extended Forecast for

Lawn PA

  • Today

    Today: Sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Southeast wind 6 to 11 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 5pm.  High near 71. South wind 13 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Mostly Cloudy
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms.  Low around 49. South wind 7 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers

  • Thursday

    Thursday: A chance of showers, mainly before 8am.  Partly sunny, with a high near 62. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 50. Southeast wind 6 to 11 mph.
Wednesday
Showers, with thunderstorms also possible after 5pm. High near 71. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms. Low around 49. South wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly before 8am. Partly sunny, with a high near 62. Northwest wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Lawn PA
 40.22°N 76.53°W (Elev. 604 ft)
2:56 am EDT May 12, 2026
5am EDT May 12, 2026-6pm EDT May 18, 2026
 
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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