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Posted at 3:15 PM ET, 09/24/2010

PM Update: Is today's record heat our 90+ finale?

By Ian Livingston

Still warm Sat., but cooling off (and becoming rainy?) after

* Record highs shattered today | Dulles breaks 90+ record *
* Tropical Storm Matthew may threaten | Summer heat stats | NatCast *
* Outside now? Radar, temperatures & more: Weather Wall *

Is this it? Let's hope so. Heat wave No. 8 of the year is official. We've picked up day 66 of 90 degrees or higher in D.C., and we're now only 1 short of the record of 67 in 1980. It is also the 27th day above 95. Under mostly sunny skies, much of the area has risen into the mid-and-upper 90s this afternoon. Unlike other super-hot days earlier in the season, there is much better temperature news right around the corner.

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: It's going to feel pretty summery right through the evening as temperatures fall toward the low-and-mid 80s after sunset. Other than that, it's a mostly clear night with readings eventually reaching the mid-to-upper 60s in the suburbs to the lower 70s downtown.

Tomorrow (Saturday): A cold front should progress through the area during the morning or midday with a band of clouds and the outside risk of a passing shower. We should quickly clear again by afternoon as a west wind kicks up behind the front. Temperatures should be warm, but it'll probably be a struggle to get to day 67 90+. Still, it should be close as highs rise at least to the mid-and-upper 80s. Think we'll make it??

See Camden Walker's forecast through the beginning of next week. And if you haven't already, join us on Facebook and follow us on Twitter.

By Ian Livingston  | September 24, 2010; 3:15 PM ET
Categories:  Forecasts  
Save & Share:  Send E-mail   Facebook   Twitter   Digg   Yahoo Buzz   StumbleUpon   Technorati   Google Buzz   Previous: DCA shatters record of 94, soars to 99
Next: NatCast: Very warm early fall afternoon


Going apple picking tomorrow afternoon in Winchester. Any chance the cooler air will be filtering in by then? Doesn't sound like it but I am holding out hope for a little drop by then....

Posted by: bodyiq | September 24, 2010 3:29 PM | Report abuse

Re: whether DCA hits 90 (or more) tomorrow, depends on when the front barrels through, how much precip falls, and how much heating results from west winds coming off the Apps. I'm guessing 87-88, but c.a. 91 wouldn't be a surprise.

Posted by: JerryFloyd1 | September 24, 2010 3:40 PM | Report abuse

90+ tomorrow? If we're this close, we've got to at least tie the record!

Also, I don't know if it's just me, but forecasters seem to consistently underestimate daily high temperatures in our area (winter included). More often than not the temperatures exceed the forecast by at least a degree or two. If the cold front arrives late tomorrow and the sun breaks through any morning clouds, we ought to sail past the mid to upper 80s with ease. Maybe I'm jinxing it though.

Posted by: meteorolinguist | September 24, 2010 3:49 PM | Report abuse

Looks like we will end up with between the 4th-10th warmest Sept on record, depending on Sun-Thurs. temps. Looks we will be at +4.6 - +4.7 thru Sat.

Posted by: VaTechBob | September 24, 2010 4:17 PM | Report abuse

bodyiq - you should be pretty great in Winchester tomorrow afternoon. 80s and pretty low humidity where you are going (will filter into Winchester sooner than DC, yes.)

meteorolinguist - doubtful we hit 90 tomorrow. But there is small upside pop potentially to our temps because of the downsloping aspect of the winds tomorrow, off the Blue Ridge (westerly wind direction)

VaTechBob - thanks for running some stats! whew it is warm indeed...

Posted by: Camden-CapitalWeatherGang | September 24, 2010 4:48 PM | Report abuse

NWS saying today's high was 99.

How times has that happened this year?

Posted by: JerryFloyd1 | September 24, 2010 5:36 PM | Report abuse

meant to say How MANY times has that happened this year, i.e., we've reached 99 for a high?

Posted by: JerryFloyd1 | September 24, 2010 5:37 PM | Report abuse

This is the 4th 99 of the yr, but changes up our "top 10" highs from reporting on Wed. This is a top 8 or tied #5.

Posted by: Ian-CapitalWeatherGang | September 24, 2010 5:40 PM | Report abuse

Thanks, Ian, Pretty amazing.

Plus there were 21 Cooling Degree Days today, so the 2010 total is now 2,033. That's close to the annual average (2,088) for Charleston, SC, 450 (flying) miles south of here.

Posted by: JerryFloyd1 | September 24, 2010 6:37 PM | Report abuse

As amazing or maybe even more is that today is a +18 for the avg, the high is a +22. You don't see that very often at all I don't think... +22 during peak heat is a high of 111. ;-)

Posted by: Ian-CapitalWeatherGang | September 24, 2010 7:38 PM | Report abuse

Looks like today is the hottest possible day until next May!!

Posted by: bastings | September 24, 2010 8:08 PM | Report abuse

We've made it this far. I'd love to see one more 90+ in the books. To come all this way and fall one short of 1980 is a little lame. Unfortunately, there's nothing long-range, and the ground is beginning to lose heat.

Posted by: ennepe68 | September 24, 2010 8:50 PM | Report abuse

Today's news stories (WashPost, Channel 7) about the stink bug invasion are all too true. Until tonight, hasn't been too bad, but I've wiped out eight of them in the past 20 mins in one room. And spray is a waste on these little critters; they just fly away...

Posted by: JerryFloyd1 | September 24, 2010 9:17 PM | Report abuse

Why such extreme heat with the steadily-lowering sun angle and shorter days? In June-July, the daylight lasted some 15 hours, and the sun angle was up over 70 degrees or more. Now, daylight is down to about 12 hours......and the sun angle is much lower. I understand the tendency of southerly winds to bring in warmer air from the Gulf states, but it should be getting a little cooler down there by now, too...and it isn't. And so-called climate-warming, simply by itself, couldn't have produced a record-breaking summer like this......we haven't seen prolonged heat like this since the summers of 1980 and 1988.....22 and 30 years ago.

Posted by: MMCarhelp | September 24, 2010 10:59 PM | Report abuse

We better make 90 degrees at Reagan National on Saturday if we want a piece of the annual 90-degree record. It looks like the weather will be changing to an autumnal pattern. Also, it becomes increasingly difficult to have 90 degree days once we enter October. Most daily maximum records after early October are in the 80s.

The baked-in drought seems to add three or four degrees to our daily maximums. Forecasts lately have been consistently a little low on maximum temperatures. Therefore, if we are mostly sunny on Saturday we have a decent chance at 90.

I hope we don't end up with a Reagan National maximum of 89 degrees and that proves the warmest temperature for the rest of this year. We've come too far not to share the record; perspired too much.

Posted by: ricschwartz | September 24, 2010 11:40 PM | Report abuse

Today was PROBABLY the last day above 90 this year...but we can't be sure until October is in the books, so to speak.

WGN won't have a weather report tomorrow of those [darned!] late White Sox games in Anaheim!!! Sort of nasty with all the weather action going on in the Upper Midwest...though the flood threat up there may be receding a bit this weekend.

And what's going on with the Eastern U.S. Weather Portal this evening??? Did they get hacked again? All I'm getting tonight is a blank page, even with the Facebook link. Must be some darned hacker from Russia or elsewhere...

Posted by: Bombo47jea | September 24, 2010 11:57 PM | Report abuse

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