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

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Overcast

38°F

3°C

Humidity 62%
Wind Speed NW 16 G 25 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 12 Mar 12:56 pm EDT
Extended Forecast for

Hummelstown PA

  • This Afternoon

    This Afternoon: A slight chance of rain and snow before 2pm. Cloudy, with a high near 44. Northwest wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain/Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 28. Northwest wind 9 to 14 mph becoming light southwest after midnight. Winds could gust as high as 22 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 50. Windy, with a south wind 5 to 15 mph increasing to 16 to 26 mph in the afternoon. Winds could gust as high as 44 mph.

    High: 50 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Windy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. South wind around 17 mph becoming west after midnight. Winds could gust as high as 24 mph.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51. West wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers. High near 64. Breezy. Chance of precipitation is 90%.

    High: 64 °F

    Showers and
    Breezy

Detailed Forecast

This Afternoon
A slight chance of rain and snow before 2pm. Cloudy, with a high near 44. Northwest wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 28. Northwest wind 9 to 14 mph becoming light southwest after midnight. Winds could gust as high as 22 mph.
Friday
Increasing clouds, with a high near 50. Windy, with a south wind 5 to 15 mph increasing to 16 to 26 mph in the afternoon. Winds could gust as high as 44 mph.
Friday Night
Partly cloudy, with a low around 35. South wind around 17 mph becoming west after midnight. Winds could gust as high as 24 mph.
Saturday
Sunny, with a high near 51. West wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Cloudy, with a high near 54.
Sunday Night
Showers likely, mainly after 2am. Cloudy, with a low around 48. Chance of precipitation is 70%.
Monday
Showers. High near 64. Breezy. Chance of precipitation is 90%.
Monday Night
A chance of rain and snow showers before 2am. Mostly cloudy, with a low around 27. Breezy. Chance of precipitation is 40%.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Mostly sunny, with a high near 39.
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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:
11:51 am EDT Mar 12, 2026
Forecast Valid:
1pm EDT Mar 12, 2026-6pm EDT Mar 18, 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