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Posted at 3:15 PM ET, 12/ 1/2009

PM Update: December starts delightful, soon damp

By Ian Livingston

Increasing a.m. clouds lead to likely p.m. rain Wednesday

* More reaction to climate email flap | 2010 calendar | Saturday snow? *
* Temps & more: Weather Wall | Winter road warriors at the ready *

The first day of December greeted us with lots of sun today, but it's only temporary. Temperatures have warmed nicely off chilly morning lows, with highs ranging from the low-to-upper 50s, though an occasionally gusty wind makes for some "brr" moments. Pleasant weather (at least for December) continues into the night before clouds and eventually rain return tomorrow.

Webcam: Latest view of D.C. from the Netherlands Carillon at Arlington National Cemetery. Courtesy National Park Service. Refresh page to update. See this image bigger on our Weather Wall.

Through Tonight: Calm, mainly clear and chilly are the main stories tonight. Winds will go light, helping lows fall to around 30 in the coldest spots to near 40 in D.C.

Tomorrow (Wednesday): We could see a little morning sun before clouds thicken. Precipitation should hold off until at least midday as highs shoot for the low-to-mid 50s, with rain likely by late afternoon. The most intense action should wait for evening, when moderate to heavy rain and some thunderstorms are possible.

See Matt Rogers' full forecast through the weekend. And if you haven't already, join us on Facebook and follow us on Twitter.

By Ian Livingston  | December 1, 2009; 3:15 PM ET
Categories:  Forecasts  
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Next: Forecast: Rain on track to slow p.m. commute



Posted by: deveinmadisonva | December 1, 2009 5:41 PM | Report abuse

What are your thoughts on how long this next rain system lasts for?
I'm attempting to put up X-mas lights Thursday and am wondering if I will have a chance.

Posted by: bodyiq | December 1, 2009 8:20 PM | Report abuse


Newest guidance retreating a bit from
earlier runs that had more of a wintry system for middle Atlantic on
Sat/sun. Trends now show a weakly forced and regional-scale area of
light precipitation spreading over the middle Atlantic as the surface low spins well
off the Atlantic coast Sat into sun. For now a low chance event west/ a mix
of rain/snow for late Sat /mainly rain during the daytime hours as
temperatures are expected to top-out in the u30s-l40s. High pressure will
then build into the middle Atlantic for the first part of next week.

Posted by: stinkerflat1 | December 1, 2009 11:21 PM | Report abuse

Not much has changed really with the weekend potential in my opinion. Minor differences causing a bit of a shift here and there. We need at least a moderately strong storm I think to get decent rates and help draw in the somewhat limited cold air around at the surface. I think tonight's guidance looks a bit better again after some downswing today. Fairly status quo, but given historical tendancies for a shift northwest as the event arrives, the consistent positioning of some upper level features and maybe even our recent uptick in coastal events.. I am still quite interested in the potential of some flakes or more.

Posted by: Ian-CapitalWeatherGang | December 1, 2009 11:37 PM | Report abuse

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