PM Update: Nice Saturday, maybe damp Sunday; coolest August day on record in Atlanta


Clouds: Latest mid-Atlantic infrared satellite shows movement of clouds over past two hours. Refresh page to update. See more maps on our Weather Wall.

Clouds crept in this afternoon but temperatures and humidity levels remained delightful. Over the weekend, temperatures hold steady, but humidity rises, and, with that, a chance of rain returns, but not until Saturday night and Sunday.  Saturday’s shaping up to be a decent day.

Through Tonight: Mostly cloudy and pleasant.  It’s not as crisp as the past two nights, but still cooler than average.  Lows range from the upper 50s in the cooler suburbs to the low-to-mid 60s downtown.  Light winds.

Tomorrow (Saturday): It once appeared moisture would sneak into the area bringing a chance of showers, but it looks like high pressure to the north keeps the rain well south of the region during the day.  Expect considerable cloudiness, but the possibility of at least partial sunshine at times (especially in the northern suburbs) with highs 77-80. Humidity levels are still fairly low (dew points in the 50s) with a light breeze from the east at 5-10 mph.

Saturday night and Sunday:  Moisture slowly increases in the region, with a 50 percent chance of rain showers developing south to north, mainly after midnight.  There’s considerable uncertainty about the timing, coverage, and intensity of any rain…but the most likely opportunity is from very late Saturday night (pre-dawn) through midday Sunday.  A washout is unlikely, and there are even chances it’s just cloudy, with little to no rain.  Clouds dominate this stretch, with Sunday morning’s lows in the 60s, and Sunday’s highs in the mid-70s.

See Camden’s Walker’s forecast into early next week. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.



The fine weather was a reason to jump this week at Freedom Plaza, Washington DC
( Randall Myers via Flickr)

Pollen counts: Trees and grasses are LOW, weeds are MODERATE, and mold spores are MODERATE.

Atlanta’s coolest August day on record: The high in Atlanta today was just 67 degrees due to a cool airmass and blanket of clouds. That was lowest high temperature there on record in August, shattering the previous record low maximum of 70 from 1892.

Jason is currently the Washington Post’s weather editor. A native Washingtonian, Jason has been a weather enthusiast since age 10.
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Heat Tracker

48
90-degree days year-to-date
Yearly Average
36
Record Most
67 (1980,2010)
Record Fewest
7 (1886,1905)
Last Year
24

At a Glance

Fri.

thunderstorms
-- /90°
Drop 30%

Sat.

partlycloudyday
73° /84°

Sun.

sunny_clear
69° /80°

Mon.

partlycloudyday
71° /87°

Tue.

partlycloudyday
72° /88°

Wed.

partlycloudyday
73° /91°
National Airport
Dulles
BWI

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Jack Williams · August 16, 2013

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