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Posted at 11:00 AM ET, 09/12/2010

Forecast: Mainly morning showers, nicer Monday

By Matt Rogers

Another big cool push arrives by midweek

originally posted at 5 a.m., updated at 11 a.m.

* Outside now? Radar, temps, & more: Weather Wall | NatCast *
* Redskins-Cowboys: Shower threat dwindles in time for kickoff *

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


We very much need the rain, but today's (primarily morning) activities face a little disruption.
Get the 'Digit' on Twitter


Today: Cloudy with mostly a.m. showers. 73-76. | Tonight: Partly cloudy. 59-63. | Tomorrow: Mostly sunny again. 80-84. | A Look Ahead | Get Express Forecast by E-mail


A complex weather system, partially fueled by the remnants of Tropical Storm Hermine, is providing our area with its first measurable rainfall in weeks (and the first for this month). While welcome, it will dampen morning outdoor activities. But improvement arrives for afternoon activities and events such as the 32nd Annual Adams Morgan Festival. Skies start clearing tonight and a nice weather start to the work week can be expected tomorrow. Another big cool push from Canada arrives later on Tuesday for maximum impact by Wednesday.

Radar & lightning: Latest regional radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Sunday): The most frequent showers are expected this morning (70% likelihood) with only widely scattered showers or light drizzle this afternoon (20% chance). Total rainfall amounts are estimated to range from .1" to .25" - with isolated higher amounts, so this is not a major washout or an end to the late summer dry conditions. Clouds and precipitation keep temperatures down in the middle 70s for highs even though we have winds mainly from the south today. Confidence: Medium

Tonight: Clouds gradually break up overnight and temperatures drop into the upper 50s to low 60s in most areas. Some patchy fog is possible towards morning. Confidence: Medium-High

Keep reading for the forecast through mid-week...

Tomorrow ( Monday): A decent day is expected with mostly sunny skies and temperatures that warm back up into the low 80s in most spots. Light winds come from the west. Confidence: High

Tomorrow Night: Partly cloudy and comfortable. Lows are expected to range from the upper 50s to low 60s, but outlying areas could dip cooler. Confidence: High


Tuesday is a transition day as a cold front sweeps the area, bringing a few clouds and lowering our already-modest humidity levels by afternoon. The winds could be breezy at times and highs in the low 80s again will not be uncomfortable due to lower humidity. Look for clear skies for most of Tuesday night as the lows drop down into a broad range from the upper 40s in the far suburbs to near 60 in the city. Confidence: Medium-High

Wednesday finds our area bathing in another cool Canadian air mass. High temperatures aim for the low-to-mid 70s with very low humidity. Lots of sunshine will contribute to an exceptional mid-week weather situation. Confidence: Medium-High

By Matt Rogers  | September 12, 2010; 11:00 AM ET
Categories:  Forecasts  
Save & Share:  Send E-mail   Facebook   Twitter   Digg   Yahoo Buzz   StumbleUpon   Technorati   Google Buzz   Previous: SkinsCast: Shower threat on the way out
Next: Forecast: A super sweet September week


Looks to me that the system seems to be moving a bit faster than first anticipated. Is it possible that we will be done with showers and just have cloudy skys after 10:00am?

Posted by: snowlover | September 12, 2010 5:12 AM | Report abuse

report from the Blue Ridge in Virginia...

59.4 and sunny
0.75" of rain in bucket

Posted by: spgass1 | September 12, 2010 8:34 AM | Report abuse

Yes snowlover, I think you may be correct. We will still probably need to contend with light showers and drizzle for a bit longer yet (until about midday), but the majority of the heavier rain appears to be finished.

Posted by: MattRogers1 | September 12, 2010 9:32 AM | Report abuse

SP, you were lucky, I got 0.4 here. The sunny has now turned into partly to mostly cloudy, but I'm sure it will break again.

Posted by: eric654 | September 12, 2010 11:28 AM | Report abuse

eric654 - Where ya located? Blue Ridge? I am seeing many breaks in the clouds west of Culpeper... lucky!

Posted by: Camden-CapitalWeatherGang | September 12, 2010 1:15 PM | Report abuse

A big .13" here in Spotsy.
Got 2 sit in 3 hrs of rain in Blacksburg yesterday, & watch Tech lose. A generally crappy day all the way around.
Go Steelers.

Posted by: VaTechBob | September 12, 2010 2:00 PM | Report abuse

Almost 2:30 PM and still cloudy here. Very few breaks in the overcast. Drizzle around noon.

Possibly more rain Thursday or Friday...Friday is a dance night.

NOAA climate data shows that most indicators point towards a warming Earth. Solar output data, meanwhile is constant except for advances and declines occurring over the eleven year sunspot cycle. Conclusion is that HUMAN ACTIVITY appears to be the prime factor in current climate change...a rather inconvenient truth for Mr. Q and other climate change skeptics.

Posted by: Bombo47jea | September 12, 2010 2:28 PM | Report abuse

About 20 minutes ago it was still raining here in Beltsville, it's tapered off to heavy drizzle. It's hung around longer than I expected. Hope that it's all gone by kick-off.

Posted by: ana_b | September 12, 2010 2:50 PM | Report abuse

Posted by: pjdunn1 | September 12, 2010 4:54 PM | Report abuse

Boy, Igor really came back from the dead. But unless it hits Bermuda, it will be just another fishy hurricane.

Posted by: JerryFloyd1 | September 12, 2010 5:09 PM | Report abuse

So when may we expect some significant rainfall? The local vegetation is under significant stress.

Posted by: angelos_peter | September 12, 2010 5:44 PM | Report abuse

I know its early, but is there a possibility (greater than 5%) that igor could affect us?

Posted by: samdman95 | September 12, 2010 6:25 PM | Report abuse

Somehow, DCA managed 4 more cooling degree days today, and the yearly total of 1,906 is now exactly 100 below the 1980 total of 2,006 cooling degree days, the highest number I could locate.

Posted by: JerryFloyd1 | September 12, 2010 7:29 PM | Report abuse

It was cloudy off and on today, but I'll stand by my vote for a daily digit of 9.

VaTechBob, wow that's pretty crazy they lost to JMU... I couldn't believe it when I heard the news. 'Skins are looking okay so far...

Posted by: spgass1 | September 12, 2010 8:51 PM | Report abuse

Camden, sorry I didn't answer sooner, I was out enjoying the sunshine pretty much all day... I actually saw a few glimpses of the space station just now through almost solid clouds.

The winter article talked a lot about El Nino and La Nina, but left out the negative AO and somewhat negative NAO which helped the El Nino storms hit us last year. This winter may be no different even without the juicy El Nino storm track, we could still have nor'easters spin up along the coast. The negative AO and NAO seem to be correlated with low solar activity from what I am currently reading for example

Posted by: eric654 | September 12, 2010 8:59 PM | Report abuse


I don't see any opportunities for significant rain in the next week.


Don't see much chance for Igor threatening the East Coast.

Posted by: Jason-CapitalWeatherGang | September 12, 2010 9:28 PM | Report abuse

eric654 - very neat that you saw the space station, wow! thanks for the article posting, too.

Posted by: Camden-CapitalWeatherGang | September 12, 2010 10:34 PM | Report abuse

Quote from Bombo747:

Conclusion is that HUMAN ACTIVITY appears to be the prime factor in current climate change...a rather inconvenient truth for Mr. Q and other climate change skeptics.

You're right, Bombo.....human activities DO aid in climate warming. After all, dances produce a lot of body heat.

And, personally, I'm glad we have Mr. Q on the forum. He's one of the voices of reason. Keep up the good work on the truth, Q.

Posted by: MMCarhelp | September 12, 2010 11:12 PM | Report abuse

dismiss facts with a joke. good job, MMCarhelp

Posted by: samdman95 | September 13, 2010 5:08 AM | Report abuse

That would be true, if I WAS dismissing facts. In FACT, I am not.

Posted by: MMCarhelp | September 14, 2010 1:53 AM | Report abuse

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