Most Read: Local

Posted at 04:05 PM ET, 12/20/2011

PM Update: A few warm Wednesday showers; Christmas snow?

Temperatures overachieved today, running about 5 to 8 degrees above where they were forecast, which is also about 5 to 8 degrees above average. Believe it or not, it’s another 5 or so degrees warmer Wednesday. Although you won’t need heavy jackets, you will want the umbrella as a few showers are around. And what’s this about snow on Christmas?

Through Tonight: Rain showers largely remain to our north this evening and overnight but by early morning, a shower or two is possible (30% chance). With persistent cloud cover and winds coming in from the south, temperatures aren’t going to fall off much. Lows range from near 50 downtown to the mid-to-upper 40s in the cooler suburbs.

Wednesday: Rain showers are likely (60-70 percent chance), but there should be extended periods of no rain. The most likely opportunity for showers and even the rumble of thunder coincides with the afternoon and evening hours. Southerly winds push high temperatures into the low-to-mid 60s.

See Matt Rogers’forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter. For related traffic news, check out Dr. Gridlock.

Christmas snow? This morning’s European model wants to try to give us a period of sleet and snow early Christmas morning, before turning the precipitation to rain during the day. The cold air supply is very marginal and it would be difficult for much snow to stick if (a big if) this model is right, except at higher elevations. Other models do not simulate snow. We continue to be underwhelmed by the snow potential given the lack of Arctic air and need for so many ingredients to come together for this to happen. The scenario remains a long shot, but it’s something for snow lovers and White Christmas seekers to follow. We’ll have more Wednesday.

By  |  04:05 PM ET, 12/20/2011

Categories:  Forecasts

Read what others are saying

    © 2011 The Washington Post Company