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Washington DC weather for March 21: cloudy and mild Friday

National Weather Service forecast map
National Weather Service forecast map
Map courtesy National Weather Service

Brian's exclusive forecast for Washington DC:

Today: Variable cloudiness and seasonably mild with a high in the mid 50s.

Tonight: Variable cloudiness, then clearing with a low in the lower 40s.

Saturday: Clouds and sun with a light shower possible. Mild with a near 65.

Saturday Night: Variable cloudiness and turning cooler with a low in the mid 30s.

The extended forecast calls for a mostly sunny sky on Sunday with a low in the mid 30s and a high in the mid 40s. Sunny and cold on Monday with a low in the upper 20s and a high in the upper 30s. A chance of rain and/or snow on Tuesday with a low around 30 and a high in the upper 30s. A chance of snow showers early on Wednesday, then sunny and cold. The low will be in the lower 30s and the high will be in the upper 30s. Mostly sunny on Thursday with a low in the mid 20s and a high near 45.

Weather Summary

A warm front will move through the region today, causing some cloudiness to develop. Temperatures will be seasonably mild with highs in the 50s. No precipitation is expected through this evening. On Saturday, a cold front will approach the area from the west. Mild air ahead of the front will enable thermometer readings to reach into the 60s, perhaps 70 in some locations. There may be some cloudiness and a light shower with the frontal passage, but otherwise conditions will remain dry. The air behind the front will be much colder, and will drop daytime highs from the 60s on Saturday to the 40s on Sunday. On Monday, a fresh surge of arctic air will plunge into the East with daytime highs only in the upper 30s (normal highs this time of year are in the mid to upper 50s). Our attention will then be focused on the south where computer models are indicating the potential for a spring snowstorm from North Carolina to Maine. There is still some disagreement about the exact track of the storm (one track would take the Low out to sea, whereas another would take the Low up the eastern seaboard.) There is now consensus among the models that there will indeed be a storm on Tuesday that will form to our south, but the latest guidance is suggesting that the main area of the storm will move out to sea and minimize the impact on the Middle Atlantic states. A major snowstorm now appears less likely, although some snow may still fall in the area on Tuesday into Tuesday night.

Regional Weather Information

Baltimore average lows and highs

Washington average lows and highs

National Weather Service daily weather discussion

Baltimore/Washington National Weather Service

Chesapeake Bay marine forecast

Mid-Atlantic radar loop

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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