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Posted at 5:00 AM ET, 08/24/2009

Forecast: Drier Week Ahead, Still Very Warm

By Jason Samenow

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Today: Partly to mostly sunny. Mid-80s. | Tonight: Partly cloudy, 65-70.| Tomorrow: Mostly sunny. 85-90. | A Look Ahead


For the last 15 days, temperatures have been warmer than average at Reagan National Airport (DCA). It's possible we extend the streak today, though it's a close call. If we can, the rest of the week will be on the warm side, so we could put together quite the string of warm days to end the month. Contrast that to July, when we started the month with 11 straight cooler than average days and 22 out of the first 24 days ended up at or below average.

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 (Monday): The nicest day of the week? Perhaps. It will be a lot like yesterday, but a few degrees cooler. Under partly to mostly sunny skies, we should max out in the mid-80s (yesterday's high at DCA was 89) with moderate humidity levels (dew points in the low 60s). Someone could see an isolated storm (20%) in the afternoon, but most of us will be high and dry. Confidence: Medium-High

Tonight: A rather pleasant evening. Mostly clear skies will assist cooler suburban locations down to near 60, with mid-60s downtown. Confidence: High

Keep reading for the forecast through the weekend....

Tomorrow (Tuesday): Lots of sunshine tomorrow with high pressure sitting over the region. That will help temperatures rise all the way into the upper 80s with not much wind to speak of. Humidity levels will remain moderate. Confidence: High

Tomorrow Night: Another pleasant summer evening. More clear skies with lows in the low 60s in the suburbs with mid-to-upper 60s downtown. Confidence: Medium-High


More dry and very warm (borderline hot) weather on Wednesday. Highs head back up near 90. Overnight, it's clear and not too muggy, with lows in the 60s. Confidence: Medium-High

A cold front approaches from the northwest of Thursday. It probably won't have a lot of moisture to work with, but it may trigger a few late afternoon and evening storms. It will be warm and a little more humid, with high in the upper 80s and low 90s. Partly cloudy and a little muggy Thursday night, with lows in the upper 60s and low 70s. Confidence: Medium

Thursday's cold front may well wash out over the region Friday through Sunday, so we won't likely cool off or dry out. Instead, each day, we'll probably have partly sunny skies with a 30% chance or so of afternoon and evening storms. Each day, highs should range from mid-to-upper 80s, with overnight lows in the upper 60s and low 70s. The humidity will be sticky but probably not quite oppressive. The air mass won't be as tropical as last week's. Confidence: Low-Medium

By Jason Samenow  | August 24, 2009; 5:00 AM ET
Categories:  Forecasts  
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Next: Climate Study Projects Hotter Augusts for D.C.


I was surprised to hear and read reports that yesterday's humidity levels were lower. It felt just as sticky as the previous few days while I was outside. It feels better this morning, actually.

Posted by: mmurphy70 | August 24, 2009 9:00 AM | Report abuse


You're right. Humidity was just modestly lower yesterday. Today, it's modestly lower yet again. In summation, it's noticeable :)

Posted by: CapitalWeatherGang | August 24, 2009 9:47 AM | Report abuse

There's some improvement over last week, but it's still rather warm. Generally we wait until after Labor Day for the really good stuff.

Canadian charts in particular have another possible tropical storm or hurricane off our coast this coming weekend. This system will apparently intensify near the Bahamas, then move NW and north to the Outer Banks/Va. Beach/Delmarva area. Thus far, it's only on the "virtual" charts.

Posted by: Bombo47jea | August 24, 2009 12:09 PM | Report abuse

And it can stay a virtual hurricane/tropical storm as far as I'm concerned. I leave for a week in the OBX on Saturday, all tropical weather can just hold off for another 10 days or so. Thanks :-)

Posted by: ana_b | August 24, 2009 2:47 PM | Report abuse

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