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Posted at 5:00 AM ET, 10/18/2010

Forecast: Mostly magnificent Monday

By Jason Samenow

Light rain chances tonight into Wed; otherwise dry week

* Outside now? Radar, temps, clouds & more: Weather Wall *

Originally posted at 5:00 a.m., updated at 10:15 a.m.

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


A modest increase in afternoon clouds hardly compromises this gem of a day.
Get the 'Digit' on Twitter


Today: Becoming partly cloudy. 66-70. | Tonight: Mostly cloudy, slight chance of light rain late. 45-50. | Tomorrow: Mostly cloudy, spotty light rain. 61-64. | A Look Ahead | Get Express Forecast by E-mail


Finally, we have a fairly "normal" Monday weatherwise. Two Mondays ago, the high was an unseasonably chilly 56; last Monday, it was a sizzling 88. The average of those two is in the low 70s, just shy of the forecast high today and the "normal" high for the date in the upper 60s. Who said mother nature doesn't have a way of evening things out? The balance of the upcoming week features average weather, with highs in the 60s and lows in the 40s. Rain chances are modest, and mainly confined to late tonight and tomorrow.

Today (Monday): The day begins with considerable sunshine and skies should remain mostly clear into the afternoon. Some high clouds may stream in late, but not before temperatures reach the high 60s. Winds are from the north around 10 mph. Confidence: Medium-High

Tonight: Clouds lower and thicken as a weak disturbance approaches from the northwest. There's a slight (20-30%) chance of light rain after midnight, especially in the northern suburbs (30-40% chance). Lows range from the mid-40s to around 50 (downtown). Confidence: Medium

Keep reading for the forecast through next weekend...

Tomorrow (Tuesday): A little light rain may (30% chance) dampen the early morning hours (especially north of Montgomery county), before a break from mid-morning through at least mid-afternoon. Then, another batch of rain may (30% chance) enter the region in the late afternoon -- especially in the southwest suburbs. Mostly cloudy skies throughout the day hold high temps in the low 60s. Confidence: Medium

Tomorrow Night: Light rain is possible (40-50% chance) as a wave of low pressure passes by just to our south. The steadiest rain probably falls south of Fredericksburg, with rain diminishing in coverage and intensity to the north. Lows range from the mid-40s to near 50 under generally cloudy skies. Confidence: Medium


Light rain could linger into Wednesday morning, especially to the south and southeast. During the afternoon, skies likely brighten, with highs topping out in the low-to-mid 60s. Clearing and cool Wednesday night, with lows in the 40s. Confidence: Medium

A sprawling area of high pressure settles over the region for the period Thursday through Sunday establishing a tranquil, seasonable weather pattern. Days are mostly sunny and mild, with highs in the mid-60s, while nights are clear and cool, with lows in the mid-30s to mid-40s. Some of the coldest suburbs could see some frost during this stretch. Confidence: Medium

By Jason Samenow  | October 18, 2010; 5:00 AM ET
Categories:  Forecasts  
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Was the five-months from May 11-October 17 the longest period DCA has gone without dropping below 50 degrees? (Last week someone asked about the latest sub-50-degree reading at DCA.)

October 20: 70th anniversary of the earliest accumulation of 1" or more of snow at DCA (1.4" in 1940, according to Chuck Bell).

There was also accumulating snow of sorts in October 1979, .3" at DCA and I believe over an inch at IAD. Nothing in the rest-of-October 2010 forecast to suggest local pumpkins will get flaked.

Posted by: JerryFloyd1 | October 18, 2010 9:05 AM | Report abuse

The average of 56 and 88 is actually 72. :-)

Posted by: 07mg09 | October 18, 2010 9:47 AM | Report abuse


Good point. I think I was too distracted by the Redskins as I wrote that last night. Now corrected :)

Posted by: Jason-CapitalWeatherGang | October 18, 2010 10:20 AM | Report abuse

I remember the unexpected snow on Oct. 10, 1979.

Super typhoon Megi hit northern Luzon [Philippines] this morning with Category 5 winds of 180 mph [gusts to 220 mph]. Shouldn't similar hurricanes of 150+ mph [strong Category 4]over here also be designated as "super hurricanes"???

Posted by: Bombo47jea | October 18, 2010 11:25 AM | Report abuse

Bombo47jea - while the U.S. has set up nomenclature and systematized hurricane categories in the Atlantic basin, we aren't in charge of the Western Pacific ;) We should let them call typhoons and super-typhoons as they see fit, right?

Posted by: Camden-CapitalWeatherGang | October 18, 2010 11:53 AM | Report abuse

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