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Posted at 3:15 PM ET, 04/27/2010

PM Update: Some frost possible overnight

By Ian Livingston

Warm up begins in earnest on Thursday

* Frost Advisory 2 a.m. through 9 a.m. N and W suburbs *
* Saturday's tornadoes: Success amid devastation | Tornado Alley? *
* Outside now? Radar & more: Weather Wall | CWG T-Shirts *

With lots of sunshine around, today turned out fairly pleasant if also a little cool and breezy. Cool daytime readings not enough? This air mass has also set the stage for some potential frost overnight in the western and northern suburbs, so you may want to tend to any fragile outdoor plants this evening. Highs have slowly reached the low-and-mid 60s this afternoon, but winds sustained around 15 mph are adding an additional chill to the air.

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: A cool and breezy evening with temperatures falling back into the 50s around sunset. As was the case most of the winter, persistent breezes should keep us from reaching our full "cold potential." Regardless, temperatures dip into the mid-or-upper 30s in the suburbs to the lower 40s downtown -- potentially cold enough for some areas of frost, especially any locations sheltered from wind.

Tomorrow (Wednesday): After a chilly (and in some places frosty) start, we'll see lots of sun during the morning before a few clouds drift by during the afternoon. Overall, it won't be that different than today -- maybe a touch warmer, but winds could offset that. Highs should head for the mid-60s. Winds should increase during the day, with gusts near or past 30 mph at times.

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

By Ian Livingston  | April 27, 2010; 3:15 PM ET
Categories:  Forecasts  
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Anyone "surprised" it stayed in the as-predicted low 60s today? I saw only 61F at DCA last hour... that NW flow really has given us an underlying airmass of chill. The sun couldn't really compensate as some were speculating that it might warm us beyond lower 60s this morning :)

Posted by: Camden-CapitalWeatherGang | April 27, 2010 4:21 PM | Report abuse


The NW flow beat out the sunshine, which turned out to be "self-defeating". As the sun heated the surface and the surface emitted that heat--it rose and condensed in the cold air moving in aloft--forming the clouds which put the brake on the temps. We kinda missed this detail in the forecast today, but shouldn't have.

Posted by: CapitalWeatherGang | April 27, 2010 4:43 PM | Report abuse

We've had a few days like this so far this spring where cold air advection kept temperatures pretty steady through the day (with an early drop back in the afternoon). I'm already sort of questioning whether tomorrow will even match today's temps, but it should be close.

Posted by: Ian-CapitalWeatherGang | April 27, 2010 5:08 PM | Report abuse

Some areas in New England, especially in VT, saw a bit of snow today.

This is likely to be our last significant freeze threat anywhere near Washington this spring.

Posted by: Bombo47jea | April 27, 2010 7:02 PM | Report abuse

I cannot pretend to understand as well as you all why it stayed so cool today, but I sure am happy about it! Absolutely perfect weather, as far as I'm concerned. (Especially considering what's around the bend...)

Posted by: dinergirl1 | April 27, 2010 7:26 PM | Report abuse

dinergirl1 - I loved it as much as you, today!

Posted by: Camden-CapitalWeatherGang | April 27, 2010 11:14 PM | Report abuse

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