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Arctic Air Plunges into the Great Lakes, Northeast and Mid-Atlantic

Arctic air dropping through the northern and eastern U.S. and a storm off the east coast will bring periods of snow, very cold wind chills and hazardous traveling conditions from the Upper Great Lakes to the Northeast. Meanwhile in southern California, Santa Ana winds will decrease but hot, dry air will remain over the area with elevated fire weather conditions. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Mostly Cloudy and Breezy

22°F

-6°C

Humidity 55%
Wind Speed W 25 G 33 mph
Barometer 29.69 in (1005.9 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 13 Dec 6:56 am EST
Extended Forecast for

Hummelstown PA

  • Today

    Today: Sunny, with a high near 29. West wind 14 to 17 mph, with gusts as high as 34 mph.

    Sunny

    High: 29 °F

  • Tonight

    Tonight: Snow likely, mainly after 2am.  Cloudy, with a low around 19. West wind 5 to 8 mph becoming calm.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Snow Likely

    Low: 19 °F

  • Thursday

    Thursday: Snow likely before 8am, then a slight chance of snow showers after 8am.  Mostly cloudy, with a high near 31. Calm wind becoming west 5 to 7 mph in the afternoon.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Snow Likely
    then Slight
    Chance Snow
    Showers

    High: 31 °F

  • Thursday
    Night

    Thursday Night: A slight chance of snow showers before 8pm.  Mostly cloudy, with a low around 19. Light and variable wind.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

    Low: 19 °F

  • Friday

    Friday: A chance of snow showers after 8am.  Mostly cloudy, with a high near 32. Calm wind.  Chance of precipitation is 30%.

    Chance Snow
    Showers

    High: 32 °F

  • Friday
    Night

    Friday Night: A chance of snow showers before 8pm, then scattered flurries with a slight chance of snow showers after 8pm.  Mostly cloudy, with a low around 22. Chance of precipitation is 30%.

    Chance Snow
    Showers

    Low: 22 °F

  • Saturday

    Saturday: Scattered flurries before 8am.  Mostly sunny, with a high near 36.

    Scattered
    Flurries

    High: 36 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 24.

    Partly Cloudy

    Low: 24 °F

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    Partly Sunny

    High: 42 °F

Detailed Forecast

Today
Sunny, with a high near 29. West wind 14 to 17 mph, with gusts as high as 34 mph.
Tonight
Snow likely, mainly after 2am. Cloudy, with a low around 19. West wind 5 to 8 mph becoming calm. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
Snow likely before 8am, then a slight chance of snow showers after 8am. Mostly cloudy, with a high near 31. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
A slight chance of snow showers before 8pm. Mostly cloudy, with a low around 19. Light and variable wind. Chance of precipitation is 20%.
Friday
A chance of snow showers after 8am. Mostly cloudy, with a high near 32. Calm wind. Chance of precipitation is 30%.
Friday Night
A chance of snow showers before 8pm, then scattered flurries with a slight chance of snow showers after 8pm. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Saturday
Scattered flurries before 8am. Mostly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Scattered showers after 8pm. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Monday
Scattered showers. Partly sunny, with a high near 44. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 43.
Click Map For Forecast
Point Forecast:
Hummelstown PA
 40.26°N 76.73°W (Elev. 335 ft)
6:21 am EST Dec 13, 2017
7am EST Dec 13, 2017-6pm EST Dec 19, 2017
 
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