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Posted at 3:30 PM ET, 12/12/2009

Forecast: Chilly sunshine then a cold rain

By Jason Samenow

Rain early Sunday may start as snow or mix

* Winter Weather Advisory far N&W late tonight/early Sun. (map) *

EXPRESS FORECAST

Today: Partly to mostly sunny. 39-44. | Tonight: Increasing clouds, chance of snow or mix towards morning. 29-33. | Tomorrow: Mix to rain. 37-42. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

We've entered the kind of pattern snow lovers detest. It's generally cold, except as soon as precipitation threatens, it warms up just enough to result in mostly rain. That's the scenario we've got for tomorrow. And the milder air will stick around long enough to give us rain when the next storm system approaches late Tuesday. After that, it's back to cold and dry again.

Temperatures: Current area temperatures. Powered by Weather Bonk. Map by Google. Hover over and click icons for more info. Click and hold on map to pan. Refresh page to update. See map bigger on our Weather Wall.

Today (Saturday): After a very cold start to the day (upper teens and 20s), temperatures will gradually moderate with a good deal of morning sunshine. Though some high clouds may stream during the afternoon, afternoon temps should make it up to around 40, or even a little warmer. Winds will generally be light. Confidence: High

Tonight: Clouds lower and thicken overnight as low pressure approaches from the south. Snow or a mix of rain, sleet and snow may (40% chance) develop between 4 a.m. and sunrise with the best chance of precipitation south of town. Any snow/sleet accumulation should be less than 1". If you're out early enough in the morning, you may encounter a few slick spots as the ground will be fairly cold after the recent cold snap. Lows range from the upper 20s in the colder suburbs to near 32 or 33 downtown. Confidence: Medium

Keep reading for the forecast for tomorrow and into early next week. And if you haven't already, join us on Facebook and follow us on Twitter.

Tomorrow (Sunday): Mixed precipitation should fairly rapidly turnover to rain from southeast to northwest as a relatively mild wind from the south blows in. Temperatures will slowly but surely rise through the 30s and possibly into the low 40s. Rainfall amounts should generally be around 0.5" Confidence: Medium

Tomorrow Night: Rain ends during the early evening, followed by gradual clearing. Lows should range from the low 30s in the colder suburbs to the mid-30s downtown. A major re-freeze is not anticipated as little cold air will follow in the wake of this storm. Confidence: Medium

A LOOK AHEAD

Before the next blast of cold air arrives, Monday looks to be a pretty nice day as weak high pressure pays a short visit. We should have a mix of sun and clouds, and high temperatures reaching into the low-to-mid 50s. Partly cloudy overnight and not super cold, with lows in the mid-30s (in the colder suburbs) to the low 40s. Confidence: Medium

The next blast of cold air arrives late Tuesday but we'll have one more day of mild temperatures out ahead of it. Under variably clouds skies, high should be near 50. As the front passes, there's a 30% chance of showers, mainly in the afternoon.Confidence: Medium

By Jason Samenow  | December 12, 2009; 3:30 PM ET
Categories:  Forecasts  
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Next: Forecast: After Sunday soaker, warmer Monday

Comments

So it sounds like it's safe to run up north of Baltimore to see friends, and drive back tomorrow morning. I'm on my way. Thanks CWG!

Posted by: --sg | December 12, 2009 10:05 AM | Report abuse

"milder air will stick around long enough to give us rain when the next storm system approaches late Tuesday. After that, it's back to cold and dry again."

Boo!!!! Hiss!!!!!!

Posted by: Snowlover2 | December 12, 2009 10:13 AM | Report abuse

Looks to me like we could warm up above too quick (before the precip) to get much or anything in the way of snow. Some freezing rain possible, especially in the burbs.. not long lasting.

Posted by: Ian-CapitalWeatherGang | December 12, 2009 11:07 AM | Report abuse

Looks like nothing but a bunch of cold rain until midafternoon or so tomorrow. Perhaps a little sleet at the outset. Nice cirrus/cirrostratus/altostratus layer overspreading from SW this afternoon.

Posted by: Bombo47jea | December 12, 2009 5:24 PM | Report abuse

Get used 2 this scenario, this is typical of a strong El Nino yr, which is what we r slowly trending 2. While we may get lucky over the next couple of weeks, look 4 Jan & most of Feb 2 mostly snowless.

Posted by: VaTechBob | December 12, 2009 6:00 PM | Report abuse

Temps are dropping faster than I thought they would tonight. Per Weather.com I am already down to 32 degrees here in Odenton. Hopefully clouds roll in later than expected and temps continue to drop so that we get a litte frozen precip to start tomorrow.

Posted by: snowlover | December 12, 2009 6:16 PM | Report abuse

I thought this was supposed to be a moderate El Nino and that we could expect snow? Are you just being a crumudgeron?

Posted by: manassasmissy | December 12, 2009 6:41 PM | Report abuse

Snowlover, wishcasting never works, while we may have a brief period of frozen prec. this will b a mostly rain event. I love snow as much as the next guy, but this will end up as a strong El Nino yr.= little snow.

Posted by: VaTechBob | December 12, 2009 6:51 PM | Report abuse

I know, I am just hoping we can hold onto the frozen precip a little longer than expected.

Posted by: snowlover | December 12, 2009 6:55 PM | Report abuse

Current temp. in Burke: 36.5 with mostly cloudy skies.

VaTechBob, snowlover, and manassasmissy-

I think you should take a look at this:

http://ruggieweather.phpbb3now.com/viewtopic.php?f=2&t=213&sid=201cc4d91e2df696e39cac970233f357

Posted by: Yellowboy | December 12, 2009 7:14 PM | Report abuse

Va Bob is depressing the heck out of me- then I read Yellowboy's link and felt a little better.
And the winter emotional roller coaster begins. I need help ;)

Posted by: Snowlover2 | December 12, 2009 7:37 PM | Report abuse

How much measurable rain after the changeover? And is there an update as to when the precip begins?

Posted by: weathergrrl | December 12, 2009 10:24 PM | Report abuse

snowlover- Might want to work this into your wishcasting from NWS:

TEMPS WILL GRADUALLY RISE AFTR MIDNIGHT

As VT Bob correctly points out, there may be a brief period of frozen precip at onset for some, this will quickly become a rain event.

Posted by: ThinkSpring | December 12, 2009 10:39 PM | Report abuse

Right on cue...

Dulles went up 2 degrees to 37 last hour (11pm).

NWS on this one it appears.

Posted by: ThinkSpring | December 12, 2009 11:13 PM | Report abuse

The comments to this entry are closed.

 
 
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