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Posted at 2:00 PM ET, 08/16/2009

Forecast: Stretch of 90-degree Heat Begins

By Brian Jackson

* Tropics Busy w/ Ana, Bill & Claudette: Story | Hurricane Center *
* Outside Right Now? Radar, Temps & More: Weather Wall *
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Today: Lots of sun. 89-92. | Tonight: Mostly clear. 65-70. | Tomorrow: Mostly sunny. 90-93. | A Look Ahead


Just as the tropics begin to heat up, so do we. Today we could begin what will become our longest stretch of 90-degree weather yet this summer. Don't expect the mercury to be boiling, but all the way until next weekend we'll look at the possibility of topping 90 for our daily highs, with the best chances early in the week. Then, storm chances begin to return which may moderate temps for some..

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 (Sunday): If you've got one, or access to one, today would be ideal to make use of two things, a pool, or a boat. Boatloads of sun will grace you at either one. Afternoon temperatures will reach into the low 90s across the region but dew points in the low 60s will hold humidity in the moderate -- as opposed to high -- range (it's still hot!). Winds will be light and variable, taking a more southerly direction by afternoon/evening . Confidence: High

Tonight: A mostly pleasant night is in store. Clear skies and calm winds will allow temperatures to dip overnight into the mid-60s outside of the beltway. Those of you in urban areas will still have a decent cool-down with overnight lows in the upper 60s to near 70. Confidence: High

Keep reading to find out when storm chances rain on the parade of 90s...

Tomorrow (Monday): Thank you sir, may I have another. An abundance of sun will remain with temperatures again reaching the low 90s. Light winds from the south will begin to sweep some more moisture in so we may begin to feel a bit stickier during the afternoon hours. Confidence: High

Tomorrow Night: Not too much of a change for your overnight weather either. A few more clouds, call it partly cloudy, and a rise in dew points will mean it'll be a bit warmer, with lows will only in the upper 60s and lower 70s (downtown) overnight. Winds from the south will continue to be light Confidence: Medium-High


Tuesday we'll start to notice even more humidity around as well as a few more afternoon clouds. Still plenty of sun should propel temperatures into the upper 80s and I'd expect a few reported 90s as well. The risk is there for a late-afternoon shower or thunderstorm (20% chance), but I'd bank on the majority of the activity staying over the Blue Ridge. Confidence: Medium-High

Wednesday calls for the first real threat for afternoon showers and thunderstorms as a lee trough, and slowly increasing moisture, combine for at least a 30% chance that you won't need a car wash. Otherwise expect a fair mix of clouds and sun throughout the day as afternoon highs struggle to approach 90 degrees. Confidence: Medium-High

By Brian Jackson  | August 16, 2009; 2:00 PM ET
Categories:  Forecasts  
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Next: Tropics Spring to Life: Claudette Nears Fl. Landfall


I was already sick of summer!

Posted by: AxelDC | August 16, 2009 9:48 AM | Report abuse

Likely Claudette running out of water but should drop some good rains. Cool little spinup, went from a few showers yesterday morning to a nice little cyclone today. Ana looks to want to cruise the islands and Bill still looking fishy. At least we've gone from below-average on the tropical front to above-average in 2 days (assuming C is named).

Posted by: Ian-CapitalWeatherGang | August 16, 2009 11:29 AM | Report abuse

Somewhat dry...though I'd rather not rehash the spring deluge. That's why we have no drought here. It would be nice to get some cooler weather.

Agreed, Claudette [or TD 4] could make the Arlington County Fair a bit messy. Ana still needs to be watched if she emerges into the open Gulf. Bill could either go "fish storm" or threaten the Atlantic Coast depending on whether the coastal trough/boundaries persist or wash out. Right now, Category 3 is definitely possible.

Posted by: Bombo47jea | August 16, 2009 12:22 PM | Report abuse

Claudette is official now. Plane inbound to see what's going on.

Posted by: Ian-CapitalWeatherGang | August 16, 2009 12:30 PM | Report abuse


Last 24hrs, the center of Ana has been outracing the main area of convection because of the very fast steering flow and not to mention the dry air and some decent shear dissrupting Ana.

Bill is looking pretty heathly and IMO should be a Hurricane by 11pm tonight. Bill will likely find a weakness in the ridge out in the atlantic and a recurve is a high possiblity. (still waiting on the 2pm for the NHC)

Posted by: RWJ1990 | August 16, 2009 2:08 PM | Report abuse

Aircraft recon confirms Claudette stronger at 50 mph.

Posted by: CapitalClimate | August 16, 2009 2:22 PM | Report abuse

Summer, BE GONE! Bring me cool weather and chilly nights!

Posted by: sigmagrrl | August 16, 2009 2:27 PM | Report abuse

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