The Washington Post

PM Update: Staying cold, with clouds and possible wintry mix by Friday afternoon

9:55 p.m. update: It’s possible (40 percent chance) some light mixed precipitation, perhaps starting as snow, could move into D.C.’s western suburbs as early as 8-10 a.m. (towards the end of the a.m. commute). We still expect the bulk of any light precipitation in the afternoon... but be aware of a possibly earlier start.

From 4:51 p.m.: Despite sunny skies, our chilly stretch of weather continued today, with gusty winds and temperatures struggling to reach 40. Tonight into Friday, we lose the wind and sun, but keep the chill. Then, Friday afternoon, we tack on a bout of sleet and/or snow.

Through Tonight: Mostly clear skies early give way to increasing clouds. There’s no precipitation to worry about, with lows 22-28 (suburbs-city). Winds diminish to around 5-10 mph out of the north.

Friday: No worries for the morning commute, but by early-to-mid afternoon, some light mixed precipitation breaks out from the southwest to northeast. The precipitation may begin as some light snow before transitioning to sleet. Highs range from 32-36, before falling to 29-32 when precipitation commences (coldest in the north and west suburbs).

Some of the precipitation may dry up as it reaches the area, so significant accumulations aren’t likely. The best odds of a light accumulation of sleet and snow (generally under 1 inch) are west and southwest of the District. But because temperatures will be near freezing, the ground is relatively cold, and the timing of the mix may well coincide with the afternoon commute, some minor to moderate impacts on travel are possible. We will have detailed updates tomorrow.

See David Streit’s forecast through early next. And if you haven’t already, join us on Facebook and follow us on Twitter. For related traffic news, check out Dr. Gridlock.

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.

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