Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Fair

38°F

3°C

Humidity 25%
Wind Speed NE 3 mph
Barometer 30.35 in (1028.2 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 1 Mar 6:56 pm EST
Extended Forecast for

Hummelstown PA

  • Tonight

    Tonight: Increasing clouds, with a low around 21. North wind 3 to 6 mph.

    Low: 21 °F

    Increasing
    Clouds

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 37. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A chance of freezing rain and sleet after 1am.  Increasing clouds, with a low around 28. Southeast wind around 6 mph.  Chance of precipitation is 50%. New sleet accumulation of less than a half inch possible.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: Rain showers, snow showers, and freezing rain, becoming all rain after 10am.  High near 42. Southeast wind around 6 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Wintry Mix
    then Showers

  • Tuesday Night

    Tuesday Night: Showers.  Low around 37. Southeast wind around 5 mph becoming light and variable  after midnight.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers.  Cloudy, with a high near 54. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers.  Cloudy, with a low around 47. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers.  Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers.  Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 21. North wind 3 to 6 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 37. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
A chance of freezing rain and sleet after 1am. Increasing clouds, with a low around 28. Southeast wind around 6 mph. Chance of precipitation is 50%. New sleet accumulation of less than a half inch possible.
Tuesday
Rain showers, snow showers, and freezing rain, becoming all rain after 10am. High near 42. Southeast wind around 6 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Showers. Low around 37. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of showers. Cloudy, with a high near 54. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of showers. Cloudy, with a low around 47. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Friday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
7:05 pm EST Mar 1, 2026
7pm EST Mar 1, 2026-6pm EDT Mar 8, 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