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Posted at 7:30 AM ET, 09/24/2010

Forecast: Near-record heat today to slowly ease

By Camden Walker

Still warm Saturday; cooler Sunday, then rain?

* Summer heat stats | DC: Worst summer in U.S. | Natcast *
* Outside now? Radar, temps, clouds & more: Weather Wall *
* No. of 90+ days: 65 (Record: 67, 1980) | Dulles breaks 90+ record *

updated at 7:30 a.m. (originally posted at 5 a.m.)

Today's Daily Digit
 
A somewhat subjective rating of the
day's weather, on a scale of 0 to 10.

 

How can anyone like record-threatening mid-90s... in late September? Seriously. Ugh.
 
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EXPRESS FORECAST

Today: Partly to mostly sunny, breezy p.m. Mid-90s at least. | Tonight: Warm & breezy. Upper 60s to low 70s. | Tomorrow: Partly to mostly sunny. Mid-80s to near 90. | Sunday: Cooler & somewhat cloudy. 20% chance of late-day shower. Low-to-mid 70s. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

A. Camden WalkerReally hot today. As in, record highs of 94 (National) and 92 (Dulles) are in jeopardy. Saturday's pretty warm too, even though a cold front comes through early in the day. (Are ya rooting for our cold front as much as I am?!) The cooler air finally makes it in for Sunday as autumnal temps return. We'll have a chance to break this streak of mostly dry weather as we get into the early part of the work week.

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.

Today (Friday): After some patchy morning fog, skies are partly to mostly sunny on what is virtually a lock to be our 66th 90-degree day of the year. Most spots should reach highs in the mid-90s, perhaps a few upper 90s. Fairly humid, too. What you might think a saving grace -- afternoon breezes around 15 mph -- only serve to pump in the heat from the south/southwest. The sun isn't as strong as earlier in the summer. But hot is hot any way you cut it. So take it easy and drink plenty of water. Confidence: Medium-High

Tonight: Mostly clear skies, with only the slightest (around 15%) chance of a shower or thundershower, and a sizeable breeze makes for a pretty ok evening despite warm temperatures mainly in the 80s. Before sunrise, we'll still be on the warmer side of an approaching cold front. So overnight lows only dip to the upper 60s (suburbs) to low 70s (downtown). Confidence: Medium

Vote your call for today's Daily Digit (see Daily Digit box above), and keep reading for the forecast into next week...

Tomorrow (Saturday): Mother Nature tries to redeem herself behind a cold front which ushers in decreasing humidity and more tolerable temperatures. Can we notch our 67th 90-degree day of the year and tie the 1980 record? With warm breezes from the west we have a chance, but it would be just barely as highs top out in the mid-80s to near 90. I think you'll be pleased with partly to mostly sunny skies. Confidence: Medium

Tomorrow Night: Skies could cloud up a bit. Only an outside (15% chance) of a small shower. Evening temperatures fall through the 70s. Overnight, the suburbs head for lows in the 50s while downtown may hover near 60 by dawn. Just cool enough to open the windows back up? Confidence: Medium

Sunday: Finally, we make a clean break from the heat. Sun may battle clouds, especially during the afternoon, with cooler highs in the low-to-mid 70s. (Even with clouds, the loss of heat alone might make Sunday worthy of a Nice Day Sun?) I suppose I can't fully rule out a shower (20% chance) late in the day or during the evening. Confidence: Low-Medium

A LOOK AHEAD

Shower chances may increase some Sunday night. Lows probably end up about the same as the previous night -- 50s in the suburbs to as high as near 60 downtown. Confidence: Low-Medium

Monday & Tuesday are likey cloudy and possibly rainy at times (i.e., this is a low-confidence forecast), as an area of low pressure to our west (tracking from south to north) draws in moisture off the Atlantic. Most would agree, we need the rain. Temperatures remain pleasantly cool with highs in the 70s. Confidence: Low

By Camden Walker  | September 24, 2010; 7:30 AM ET
Categories:  Forecasts  
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Next: Video: 90+ degree day contest drawing

Comments

After today's trip into the inferno, there will be a bit of 80s purgatory, possibly for part of next week. And then we may finally be in fall nirvana. Looking at Acuweather's not-always-accurate long-range forecast for NYC, at least, October could be so cool.

Posted by: JerryFloyd1 | September 24, 2010 7:03 AM | Report abuse

Jerry, it sounds like you know not to trust too much those 10day+ forecasts ;) But I too am hoping for a cool fall. And the medium-range atmospheric pattern could help us out a bit, by allowing some of that cool Canadian air to infiltrate! *fingers crossed*

Posted by: Camden-CapitalWeatherGang | September 24, 2010 9:11 AM | Report abuse

jerry,
before we look forward to fall's crisp temps, redskins-colored foliage and so forth, let's get that 90 degree record. a week ago it seemed out of the question, but now the possibility is baaack. btw, this validates my criticism a few weeks ago of that guess-the-#-of-90-degree-days contest cutting off at sept 21 - should have gone to mid october.... (or after the latest 90-degree day "on record").

Posted by: walter-in-fallschurch | September 24, 2010 9:24 AM | Report abuse

Hey walter, so you're saying our contest cut it off at Sept 21? I would have said "entire season" or "calendar year" - frankly, that has been my assumption each time we address this number of 90+ days. Are you enjoying this heat at all? ;)

Posted by: Camden-CapitalWeatherGang | September 24, 2010 10:21 AM | Report abuse

I'm with Walter. Let's break the record -- I think we've earned it!

Posted by: rosilandjordan | September 24, 2010 10:38 AM | Report abuse

rosilandjordan - agreed. Let's just do it already, eh? (then please October be nicer to us, haha)

Posted by: Camden-CapitalWeatherGang | September 24, 2010 10:56 AM | Report abuse

camden,
yes. the contest was to end on september 21st, as i recall - which is funny because that wasn't even the end of summer.

Posted by: walter-in-fallschurch | September 24, 2010 11:40 AM | Report abuse

camden,
you asked if i'm enjoying the heat. well...makes me wish my local pool would open...

Posted by: walter-in-fallschurch | September 24, 2010 11:49 AM | Report abuse

Oh no, your local pool didn't extend hours? Maybe budget cuts.. hmm.. I have several friends whose building pools were granted open through all of Sept. But local (public) municipalities might be a different story. Yikes Sept 21 was not the end of summer, you are right! Our bad? lol

Posted by: Camden-CapitalWeatherGang | September 24, 2010 12:44 PM | Report abuse

To make lemonade out of the this hot lemon of a day, the sun is not beating down as ferociously as it did a month or so ago because it's heading south to spend the winter in Boca.

Re: breaking the 1980 record of 67 90-degree days, I'd rather get my kicks on Rte 66.

Camden, these long-range forecasts need to be taken with a grain ... no, a box, of salt.

Posted by: JerryFloyd1 | September 24, 2010 12:57 PM | Report abuse

Rather good chance of rain next week--how much we get could depend on what Matthew does.

Up in Wisconsin, the cities of Arcadia and Black River Falls south of Eau Claire are being flooded by excessive rains up to 10 inches. Please consult the websites for WEAU-13, WQOW-18 and WBKT-8 [the only "News Channel 8" now that our local NC8 is now TBD]. Sorry but I can't post the links from here.

Posted by: Bombo47jea | September 24, 2010 1:00 PM | Report abuse

JerryFloyd1, great joke about sun heading south to Boca for the winter

Bombo47jea, I am cautiously optimistic with two atmospheric features that ONE of them will indeed give us rain! Chances are increasing, but confidence still medium (at best!)

Regarding rains in the upper Plains states (MN & WI)... we are having an unfortunate atmospheric collision of Hurricane Karl's moisture and a cold front out of Canada. Arguably, moreso yesterday over MN, this was a PRE rain event: http://www.atmos.albany.edu/student/bmoore/research/PRE_COMP/PRE_COMP.html

Posted by: Camden-CapitalWeatherGang | September 24, 2010 1:11 PM | Report abuse

Heat index on U street NW is 106F right now... ugh!

Posted by: Camden-CapitalWeatherGang | September 24, 2010 2:21 PM | Report abuse

The comments to this entry are closed.

 
 
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