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Posted at 3:15 PM ET, 09/21/2010

PM Update: Falling back to summer, briefly

By Ian Livingston

Heat wave possible Wednesday-Friday

* Risk for U.S. hurricane increasing | Why weather matters | NatCast *
* Outside now? Radar, temperatures & more: Weather Wall *

Another gorgeous day is under our belts and we've got a late-season heat surge upcoming. Highs have reached the upper 70s and lower 80s this afternoon, which is pretty close to average this time of year. If you shut off the air conditioner recently, you can keep it that way through tonight at least.

Temperatures: Latest D.C. area temperature map powered by iMapWeather (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.

Through Tonight: Another sweet evening is ahead. Temperatures drop back toward the upper 60s and lower 70s just after sunset on their way to lows in the upper 50s in the cooler suburbs to the low-or-mid 60s downtown. Light winds from the south continue to transport in higher humidity levels.

Tomorrow (Wednesday): Welcome back to summer? Well, compared to what we've seen already, it won't be horrible, but it's getting kind of late for 90+. Nevertheless, much of the area should rise toward or just above 90 on Wednesday. Humidity won't be oppressive but you'll probably notice it as the day wears on and dew points climb into the 60s.

See Matt Rogers' forecast through the weekend. And if you haven't already, join us on Facebook and follow us on Twitter.

By Ian Livingston  | September 21, 2010; 3:15 PM ET
Categories:  Forecasts  
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Next: NatCast: Hey, who invited 80s?

Comments

Anyone else unhappy with tomorrow's heat and, even more annoying, the increasing dewpoints into the 60s? I have enjoy window weather! Cheaper electric bill, too :-)

Posted by: Camden-CapitalWeatherGang | September 21, 2010 5:39 PM | Report abuse

Trying to squeeze in some outdoor activities in Frederick, MD on Wednesday afternoon. Last Thursday, I had to cancel because the same storm that hammered NYC had its "tail" crossing north-central MD. Any idea how scattered tomorrow's possible t-storms will be, and if so, which part of the area they may be trend towards (north, south, etc?)

Posted by: vtavgjoe | September 21, 2010 5:55 PM | Report abuse

CWG - I've lost track. How many 90+ days are we at so far? I thought it was 63, but TBD's heat watch is only showing 62?

Posted by: 300_sq_ft | September 21, 2010 6:17 PM | Report abuse

Interesting dichotomy in forecasts right now for Saturday. You guys are seeing upper 80s to near 90, while NWS (along with Doug Hill and weather.com) seem to see something in the 78-82 range.

I guess a difference in feelings about timing of the front is driving this - you guys are thinking it will be slower to arrive?

Posted by: jahutch | September 21, 2010 7:14 PM | Report abuse

300_sq_ft, we've had 63. TBD has apparently been asleep at the wheel since Sept 8 (we picked up another on the 16th). ;-)

Posted by: Ian-CapitalWeatherGang | September 21, 2010 9:24 PM | Report abuse

The comments to this entry are closed.

 
 
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