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Posted at 9:55 AM ET, 05/21/2009

Forecast: Warm and Pleasant Weather Prevails

By Josh Larson

Holiday weekend will feature plenty of sunshine

* NatCast | D.C.'s New Stormwater Fee | Later: CWG Summer Outlook *


Today: Sunny and milder. Around 80. | Tonight: Mostly clear. 55-60. | Tomorrow: Sunny and warm. Mid-80s. | Tomorrow Night: Partly cloudy and mild. Mid-60s. | A Look Ahead


Though both temperatures and humidity will increase somewhat over the next few days, we'll still have a pleasant and predominately sunny and dry Memorial Day weekend that will provide the near-ideal backdrop for outdoor activities. While we can't rule out widely scattered "pop-up" afternoon or evening thundershowers Saturday, Sunday and Monday, I wouldn't be surprised if this turns out to be -- overall -- both the sunniest and driest weekend since late March! Get outside and enjoy, though mind the relatively high pollen.

Today (Thursday): Like yesterday, we'll see quite a bit of sunshine today, but, as high pressure begins to shift east, southerly winds will boost temperatures to around 80. These winds from the south may breeze to around 10 mph at times. All and all, I'd say, a very fine day.

Tonight: Clouds will remain elusive tonight with pleasant overnight lows dropping to the mid-50s across the cooler spots to near 60 downtown. Confidence: High

Keep reading for the entire holiday weekend forecast...

Tomorrow (Friday): As high pressure moves offshore on Friday, stronger southerly winds (aloft) will boost temperatures further still. I'm thinking rather warm readings in the mid-80s across most of the area -- between 5 and 10 degrees above normal for late May. Skies are expected to remain mostly sunny, with humidity levels up a notch from Thursday but still largely in check. Confidence: Medium-High

Tomorrow Night: For the first time in quite a while, if you're heading out for evening plans Friday night, there's no need for an umbrella! But dress lightly as evening temperatures will hang out in the 70s and eventual overnight lows will only drop to the mid-60s under mostly clear skies. Confidence: Medium-High


Lots of sun and warm weather stays with us on Saturday. Afternoon highs will again be in the mid-80s and humidity will increase a tick further to borderline uncomfortable for some. There's a slight (less than 20%) chance of a stray thunderstorm during the afternoon or evening hours, but the vast majority of the region should remain rain-free. The evening will stay mild, though clouds may increase a bit, with overnight lows eventually settling in the rather mild mid-60s. Confidence: Medium-High

Highs (in the low to mid-80s) and humidity will remain at nearly the same levels on Sunday as on Saturday -- which is to say continued warm and borderline humid -- but we may see more in the way of clouds. Don't fret, though, as I think it will still be at least partly sunny, with the low chance, once again, of an isolated afternoon or evening thundershower in spots. The evening should feature mild conditions with partly cloudy skies and overnight lows again in the mid-60s. Confidence: Medium-High

The outlook for Memorial Day Monday is for a blend of clouds and sun with scattered showers or thunderstorms well within the realm of possibility but -- at least at this juncture -- not expected to be widespread. It will likely be a touch less warm, too, with afternoon highs in the just about exactly "normal" upper 70s. Confidence: Medium

By Josh Larson  | May 21, 2009; 9:55 AM ET
Categories:  Forecasts  
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Next: Summer Outlook: Less Hot Than Recent Years


Totally off subject--except for snow lovers, that is--but have you ever heard of "snow rollers"?

Posted by: ASColletti | May 21, 2009 5:59 AM | Report abuse

ASColetti, my sister who lives in Missoula, MT sent me some pictures of snow rollers in Spokane which occurred a couple of months ago.

This is great weather. Wish it could run through the Memorial Day weekend. That's too much to expect, especially with a full dance card starting tomorrow night.

Posted by: Bombo47jea | May 21, 2009 12:10 PM | Report abuse

UV index 12 "Extreme" outside. Protect yourself if you have to head outside into Solar Noon... Spf 45+ is recommended!

Posted by: Camden-CapitalWeatherGang | May 21, 2009 1:10 PM | Report abuse

Frederick, Leesburg, Cumberland, Staunton already 80°+ as of 1:00.

Posted by: CapitalClimate | May 21, 2009 1:20 PM | Report abuse

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