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Washington DC weather for March 20: evening update

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Brian's exclusive forecast for Washington DC:

Tonight: Mostly clear with a low around 40.

Friday: Mostly sunny and breezy. Warmer with a high near 60.

Friday Night: Mostly clear with a low in the lower to middle 40s.

The extended forecast calls for clouds and sun on Saturday with a slight chance of a rain shower. The low will be in the lower 40s and the high will be in the lower 60s. Breezy and colder with sunshine on Sunday. The low will be in the mid 30s and the high will be in the mid 40s. Mostly sunny and cold on Monday with a low in the upper 20s and the high will be in the lower 40s. A chance of rain and/or snow on Tuesday with a low in the upper 20s and a high in the upper 30s. Mostly sunny on Wednesday with a low in the mid 20s and a high in the upper 30s.

Weather Summary

The first day of spring in the Middle Atlantic states featured a mostly sunny sky with seasonable temperatures as highs reach the 50s. It was breezy at times which added a bit of a chill to the air, but compared to recent weather this was a welcome change that offered hope for the spring season. High pressure will build over the area during the remainder of the evening. Temperatures in Baltimore and Washington at 10 p.m. are in the mid 40s on average, and the mercury will only drop a few more degrees by morning. Meanwhile, a warm front tomorrow will set the stage for a very pleasant Friday and Saturday with highs in the 50s to lower 60s and overnight lows in the 40s. Some locations may reach 65 to 70 on Saturday as warm air surges north in advance of a cold front. On Sunday, a cold front will move from west to east across the region and colder air will overspread the area from the northwest. This will drop daytime highs from the 60s on Saturday to the 40s on Sunday. There may be a few light rain showers on Sunday as a weak wave of low pressure moves to our south. By Monday, a fresh surge of arctic air will plunge into the East and our attention will be turned to 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.) However, there is now consensus that there will indeed be a storm on Monday and Tuesday that will form to our south.

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 www.chesapeakebayweather.com, 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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