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Washington DC weather for March 18: cloudy, breezy, cold

March 17 2014 snow in Washington DC-slide0
Photo by Win McNamee/Getty Images

Brian's exclusive forecast for Washington DC:

National Weather Service forecast map
Map courtesy National Weather Service

Today: Mostly cloudy with a few flurries. Cold with a high in the upper 30s. Northeast wind 10 to 20 at times.

Tonight: Partial clearing and cold with a low in the upper 20s.

Wednesday: Mostly cloudy with a chance of afternoon showers. The high will be 40 to 45.

Wednesday Night: A few rain or snow showers with a low around 40.

Thursday: Mostly sunny and breezy. Warmer with a high near 55.

The extended forecast calls for a sunny sky on Friday with a low in the upper 30s and a high near 55. Mostly cloudy on Saturday with a low around 45 and a high near 60. Clouds and sun on Sunday with a low around 40 and a high near 50. Mostly sunny on Monday with a low around 30 and a high near 45.

The morning weather map features an area of high pressure in southeastern Canada that will funnel down cold air and wind today from the north. At the same time, a disturbance to our south will keep the area under considerable cloudiness with light precipitation well to the south and east across Tidewater in Virginia. Temperatures this morning did not fall that much from last evening due to the extensive cloud cover. As a result, morning lows were only around 30 to the lower 30s at most locations (except some upper 20s in outlying areas.) As we move through the day, clouds will keep temperatures from rising all that much, but some areas may touch 40 by later in the afternoon. A breeze from the northeast will make it feel cold nonetheless. The sky will begin to clear somewhat later tonight, enabling temperatures to fall back into the upper 20s to lower 30s by Wednesday morning. Meanwhile, a cold front will move from west to east across the region on Wednesday. A mild flow ahead of the front will enable thermometer readings to rise into the 40s to near 50 by the middle of the week. A few rain showers may accompany the frontal passage. The air behind the front will be on a west wind, so highs on Thursday and Friday will surge well into the 50s and the recent snowstorm will only be a memory. By Saturday, 60 degrees is not out of the question, but showers may accompany the mild air. The warm-up will be brief, as another wave of arctic air will be poised to move toward the northeast and Middle Atlantic states by Sunday and Monday with highs only in the 40s. Overnight lows will be in the 20s to lower 30s.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect through late Tuesday night. Winds on Tuesday will come out of the northeast at 10 to 15 knots with gusts to 20 knots and waves up to 3 feet. Winds on Wednesday will come out of the southeast at 10 knots with waves around one foot. Visibility may be reduced in rain showers and fog on Wednesday. Winds on Wednesday night will come out of the east at 10 knots with waves from 1 to 2 feet. Visibility may be reduced in rain showers and fog on Wednesday night. Winds on Thursday will come out of the west at 10 to 15 knots with gusts over 20 knots and waves from 1 to 2 feet. Marine information is provided only as a guide. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

Click here for the average March lows and highs for Baltimore. Click here for the average March lows and highs for Washington DC. Click here for the sunrise and sunset times. For more weather updates, please visit my web site, my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.

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