National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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5 Miles SW Mc Henry MD

7 Day Forecast

For More Weather Information:

Pittsburgh, PA Local Forecast Office

Today

Cloudy

Cloudy

High: 33 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 27 °F

Monday

Chance Freezing Rain Chance for Measurable Precipitation 30%

Chance
Freezing Rain

High: 35 °F

Monday
Night

Cloudy

Cloudy

Low: 31 °F

Tuesday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 48 °F

Tuesday
Night

Showers Chance for Measurable Precipitation 80%

Showers

Low: 42 °F

Wednesday

Showers Chance for Measurable Precipitation 80%

Showers

High: 50 °F

Wednesday
Night

Rain/Snow Likely Chance for Measurable Precipitation 70%

Rain/Snow
Likely

Low: 32 °F

Christmas
Day

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 34 °F

Detailed Forecast

  • Today Cloudy, with a high near 33. West wind around 6 mph becoming calm in the afternoon.
  • Tonight Mostly cloudy, with a low around 27. Southeast wind 6 to 11 mph.
  • Monday A chance of freezing rain before noon, then a chance of rain showers. Cloudy, with a high near 35. Southeast wind around 14 mph. Chance of precipitation is 30%.
  • Monday Night Cloudy, with a low around 31. Southeast wind 10 to 13 mph.
  • Tuesday A chance of showers, mainly after 3pm. Cloudy, with a high near 48. Southeast wind 10 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
  • Tuesday Night Showers, mainly after 9pm. Low around 42. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Wednesday Showers. High near 50. Chance of precipitation is 80%.
  • Wednesday Night Rain and snow showers likely. Cloudy, with a low around 32. Chance of precipitation is 70%.
  • Christmas Day A chance of snow showers. Cloudy, with a high near 34. Breezy. Chance of precipitation is 40%.
  • Thursday Night Mostly cloudy, with a low around 29.
  • Friday Partly sunny, with a high near 45.
  • Friday Night A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
  • Saturday A chance of rain and snow showers. Cloudy, with a high near 36. Chance of precipitation is 40%.