Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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Hazardous Weather Conditions

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40°NLon: -75.73°WElev: 288ft.

Unknown Precip

19°F

-7°C

Humidity 47%
Wind Speed W 16 G 24 mph
Barometer 30.00 in (1016.2 mb)
Dewpoint 2°F (-17°C)
Visibility 6.00 mi
Wind Chill4°F (-16°C)
Last update 11 Feb 9:54 am EST
Extended Forecast for

Downingtown PA

  • Today

    Today: Snow showers likely, mainly before noon.  Mostly sunny, with a high near 26. Breezy, with a west wind 18 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    Snow Showers
    Likely then
    Isolated Snow
    Showers and
    Breezy

    High: 26 °F

  • Tonight

    Tonight: Mostly clear, with a low around 13. West wind 7 to 15 mph.

    Mostly Clear

    Low: 13 °F

  • Friday

    Friday: A slight chance of snow showers after 1pm.  Partly sunny, with a high near 24. Calm wind becoming southwest 5 to 7 mph in the morning.  Chance of precipitation is 20%.

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

    High: 24 °F

  • Friday
    Night

    Friday Night: Scattered snow showers.  Mostly cloudy, with a low around 18. South wind 5 to 13 mph becoming northwest after midnight.  Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Scattered
    Snow Showers

    Low: 18 °F

  • Saturday

    Saturday: Scattered flurries.  Partly sunny, with a high near 18. Windy, with a northwest wind 16 to 21 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 44 mph.

    Scattered
    Flurries and
    Windy

    High: 18 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around -1. Blustery.

    Partly Cloudy
    and Blustery

    Low: -1 °F

  • Sunday

    Sunday: Sunny, with a high near 13.

    Sunny

    High: 13 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 9.

    Partly Cloudy

    Low: 9 °F

  • Washington's
    Birthday

    Washington's Birthday: A chance of snow.  Mostly cloudy, with a high near 31. Chance of precipitation is 40%.

    Chance Snow

    High: 31 °F

Detailed Forecast

Today
Snow showers likely, mainly before noon. Mostly sunny, with a high near 26. Breezy, with a west wind 18 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly clear, with a low around 13. West wind 7 to 15 mph.
Friday
A slight chance of snow showers after 1pm. Partly sunny, with a high near 24. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 20%.
Friday Night
Scattered snow showers. Mostly cloudy, with a low around 18. South wind 5 to 13 mph becoming northwest after midnight. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Saturday
Scattered flurries. Partly sunny, with a high near 18. Windy, with a northwest wind 16 to 21 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 44 mph.
Saturday Night
Partly cloudy, with a low around -1. Blustery.
Sunday
Sunny, with a high near 13.
Sunday Night
Partly cloudy, with a low around 9.
Washington's Birthday
A chance of snow. Mostly cloudy, with a high near 31. Chance of precipitation is 40%.
Monday Night
Snow likely. Cloudy, with a low around 28. Chance of precipitation is 60%.
Tuesday
Rain and snow likely. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 41.
Click Map For Forecast
Point Forecast:
Downingtown PA
 40°N 75.73°W (Elev. 364 ft)
9:35 am EST Feb 11, 2016
10am EST Feb 11, 2016-6pm EST Feb 17, 2016
 
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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