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Posted at 11:45 AM ET, 03/25/2010

Forecast: Mild day, rain likely to wait until tonight

By David Streit

Rains could linger into Friday morning rush

* NASA projects a hot 2010 | Forecasting precipitation | CWG T-Shirts *
* Outside now? Temps, clouds & more: Weather Wall | Traffic *

Today's Daily Digit
 
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.
 
8The sun will be a little dim but nice warmth should allow outdoor lunch plans to go ahead.
 
Get tomorrow's 'Digit' on Twitter tonight

EXPRESS FORECAST

Today: High clouds, filtered sunshine. 64-68. | Tonight: Increasing clouds with rain. 45-49. | Tomorrow: Rain ends early, clearing afternoon. 50-54. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

By David Streit, CWG Meteorologist

The weather over the next 5 days may provide a case of déjà vu. One storm is slated to come through tonight making for a messy Friday morning rush hour. This scenario will repeat late Sunday into Monday morning. Rains from both systems should be in the one half to one inch range. These showers will make the sneezers happy as plenty of tree pollen will be washed from the skies. Unfortunately, the price to be paid is cooler temperatures over the weekend between storms.

Temperatures: Latest D.C. area temperature map powered by iMap (base map by Google). Click and hold on map to pan. Double-click to zoom. Refresh page to update. See larger map on our Weather Wall.

Today (Thursday): Thin high clouds will be the rule today but they should allow enough filtered sunshine for high temps to climb into the mid-to-upper 60s. Clouds may lower and thicken as the day wears on. Winds will increase during the day, peaking late this afternoon from the south at 10 to 15 mph. Confidence: High

Tonight: Clouds will thicken up during the early evening with rain most likely developing between 7 p.m. and 10 p.m. The rains will be steadier after that. Lows will slip to the mid-to-upper 40s once the rains set in. Winds will be from the south at 5 to 10 mph most of the night. Confidence: Medium-High

Keep reading for the forecast through Monday...

Tomorrow (Friday): Rain will probably still be coming down early morning. Winds will pick up from the east at 10 to 15 mph making umbrella usage a little tricky. The showers should quickly diminish by mid-morning. Clearing skies by mid-afternoon should allow a viewable sunset. Temperatures will climb very little as winds will shift to out of the north by mid-day. Highs will only be in the low-to-mid 50s. Confidence: Medium-High

Tomorrow Night: Winds will calm quickly in the evening. Under clear skies and high pressure, temperatures will drop just as rapidly. The likelihood of frost outside of immediate downtown is high. Lows will be in the upper 20s to lower 30s (perhaps mid-30s downtown). Confidence: Medium-High

A LOOK AHEAD

Saturday will be sunny but cool. After a frosty start, the mid-50s is probably as warm as it will get for afternoon highs. Fortunately, winds will be minimal, so standing in the sun should feel just fine. Confidence: Medium-High

Sunday will start out mostly sunny and cool (in the mid-to-upper 30s) after a calm, clear night. We'll gradually see more clouds filter in with a slight chance of rain during the afternoon (30% chance). The clouds will keep highs from exceeding the upper 50s to near 60. Winds will pick up from the south at 5 to 10 mph. Overnight, rain is likely as the next storm moves through. Confidence: Medium

Monday will be a lot like Friday with rain possible in the morning before winding down some time later during the day (exact timing to be determined) and gradual clearing. Temperatures will at least climb from around 50 to around 60 as the air behind this system will not be as cold as Friday's. Confidence: Medium

By David Streit  | March 25, 2010; 11:45 AM ET
Categories:  Forecasts  
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Next: Now you know the power of El Niño

Comments

FIRST!

Posted by: DCcola | March 25, 2010 8:55 AM | Report abuse

Well CWG, this week I have been quietly relying on your low-medium confidence for Friday's forecast. You see when the weather was pretty a week ago I decided to take tomorrow off to have the windows washed. I was thinking I might even get some gardening in during the afternoon. Disappointed I have been all week watching the forecast but thinking -- it is a low cofidence so maybe. Now it looks like while cool, I may be able to get out into the garden. Yeah!

Posted by: erbele | March 25, 2010 9:52 AM | Report abuse

Latest NAM has shot up to around 1-2" of precip tonight/early tomorrow. It's probably overdone, but if it were to stay consistent with model runs later today, and if GFS were to trend in that direction, then we'd be approaching flash flood watch criteria based on flash flood guidance (here, here and here) for D.C. and areas just north and west (Montgomery/Fairfax/Arlington/Howard counties). My guess is totals are more like .75-1.25" and only the potential for a few isolated high-water cases, but something to watch on this otherwise quiet but pleasantly warm weather day. -Dan, CWG

Posted by: CapitalWeatherGang | March 25, 2010 10:58 AM | Report abuse

I have to disagree with the Nice Day! label and rating of an 8. It was nice this morning, but its looking rather gray at the moment.

Posted by: apeirond | March 25, 2010 11:09 AM | Report abuse

@apeirond

We agree. The Nice Day stamp applied this morning, but clouds have thickened sufficiently to remove it now.

Posted by: CapitalWeatherGang | March 25, 2010 11:47 AM | Report abuse

CWG (and thinkspring et. al.),
about that predicted 1-2" of rain and all that flash flooding stuff: boy, that sound really DANGEROUS and COSTLY. too bad it can't fall as relatively harmless and fun-to-play-in snow....

Posted by: walter-in-fallschurch | March 25, 2010 12:29 PM | Report abuse

;-)

Posted by: walter-in-fallschurch | March 25, 2010 1:27 PM | Report abuse

It's probably too late for snow now, except possibly the conversational variety.

Don't worry, it will be back, Dec. 5, 2010.

Posted by: Bombo47jea | March 25, 2010 1:31 PM | Report abuse

That 8 turned out to be more like a 6.

Oh, still some snow piles in the shade under some pine trees at my work. You should start a contest asking people to find the last snow pile in the DC area.

Posted by: rwalker66 | March 25, 2010 1:48 PM | Report abuse

Lack of sun not much match for a warm southerly flow... pretty much everyone upper 60s+ now.

Posted by: Ian-CapitalWeatherGang | March 25, 2010 2:04 PM | Report abuse

Pretty substantial winds at the 301 Bridge.

Posted by: waterfrontproperty | March 25, 2010 2:15 PM | Report abuse

@Ian

Yep ... am surprised NWS dropped their high temp forecast for today so much in their late morning update. This was always supposed to be a partly to mostly cloudy day, and the last day before a cold front almost always meets or exceeds temperature expectations even with high clouds. -Dan, CWG

Posted by: CapitalWeatherGang | March 25, 2010 2:31 PM | Report abuse

The comments to this entry are closed.

 
 
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