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.

Mostly Cloudy

51°F

11°C

Humidity 52%
Wind Speed SE 10 mph
Barometer 30.30 in (1026.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 25 Mar 12:56 pm EDT
Extended Forecast for

Hummelstown PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 57. South wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 57 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. South wind 7 to 10 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 2pm. Mostly cloudy, with a high near 71. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 71 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, then rain and possibly a thunderstorm after 2am. Low around 47. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain Likely
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 52. North wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 57. South wind 9 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 43. South wind 7 to 10 mph.
Thursday
A slight chance of rain after 2pm. Mostly cloudy, with a high near 71. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Rain likely, then rain and possibly a thunderstorm after 2am. Low around 47. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 8am. High near 52. North wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly cloudy, with a high near 60.
Monday Night
Mostly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
1:11 pm EDT Mar 25, 2026
Forecast Valid:
1pm EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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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