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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Rockville MD

7 Day Forecast

Today

Partly Sunny

Partly
Sunny

High: 40 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 28 °F

Monday

Wintry Mix Chance for Measurable Precipitation 60%

Wintry
Mix

High: 39 °F

Monday
Night

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 38 °F

Tuesday

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

High: 48 °F

Tuesday
Night

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

Low: 48 °F

Wednesday

Rain Chance for Measurable Precipitation 90%

Rain

High: 60 °F

Wednesday
Night

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 41 °F

Christmas
Day

Mostly Sunny

Mostly
Sunny

High: 49 °F

Detailed Forecast

  • Today Partly sunny, with a high near 40. Calm wind.
  • Tonight Partly cloudy, with a low around 28. Calm wind.
  • Monday A slight chance of snow, freezing rain, and sleet before 9am, then a chance of rain and sleet between 9am and noon, then rain likely after noon. Increasing clouds, with a high near 39. Northeast wind 3 to 6 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. Little or no snow and sleet accumulation expected.
  • Monday Night A chance of rain. Cloudy, with a low around 38. North wind 5 to 7 mph. Chance of precipitation is 50%.
  • Tuesday A chance of rain. Cloudy, with a high near 48. North wind 3 to 6 mph. Chance of precipitation is 40%.
  • Tuesday Night Rain likely. Cloudy, with a low around 48. Chance of precipitation is 70%.
  • Wednesday Rain. High near 60. Chance of precipitation is 90%.
  • Wednesday Night A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.
  • Christmas Day Mostly sunny, with a high near 49.
  • Thursday Night Mostly clear, with a low around 33.
  • Friday Mostly sunny, with a high near 50.
  • Friday Night Mostly cloudy, with a low around 37.
  • Saturday Partly sunny, with a high near 50.