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Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Overcast

54°F

12°C

Humidity 80%
Wind Speed NW 6 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 48°F (9°C)
Visibility 9.00 mi
Wind Chill52°F (11°C)
Last update 11 Mar 9:56 am EDT
Extended Forecast for

Hummelstown PA

  • Today

    Today: Showers and thunderstorms likely, mainly after 3pm. Some of the storms could be severe. Mostly cloudy, with a high near 76. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers after 2am. Some of the storms could be severe. Low around 43. South wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Severe
    Thunderstorms
    then Showers

  • Thursday

    Thursday: A chance of rain showers, possibly mixing with snow after 11am, then gradually ending. Mostly cloudy, with a high near 45. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 51. Breezy, with a south wind 6 to 11 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 39 mph.

    High: 51 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 55.

    High: 55 °F

    Cloudy

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 3pm. Some of the storms could be severe. Mostly cloudy, with a high near 76. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, then showers after 2am. Some of the storms could be severe. Low around 43. South wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of rain showers, possibly mixing with snow after 11am, then gradually ending. Mostly cloudy, with a high near 45. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly clear, with a low around 30. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Friday
Partly sunny, with a high near 51. Breezy, with a south wind 6 to 11 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 39 mph.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Cloudy, with a high near 55.
Sunday Night
Showers, mainly after 2am. Low around 46. Chance of precipitation is 80%.
Monday
Showers. High near 57. Breezy. Chance of precipitation is 80%.
Monday Night
A chance of showers. Partly cloudy, with a low around 26. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
10:36 am EDT Mar 11, 2026
Forecast Valid:
10am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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