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PM Update: Showers possible Saturday, Sunday is super; D.C.’s waning daylight

Temperature Map

Temperatures: Latest D.C. area temperature map. See interactive map on our Weather Wall.

Our work week finale has been pleasant enough, with falling humidity and afternoon highs in the mid-to-upper 80s.  The weekend, generally, looks good, though I worry about the possibility of showers Saturday.  Of the two days, Sunday – for sure – is the safe pick for outdoor plans.

Through Tonight: It’s very, very nice this evening.  Temperatures fall back through the  80s and into the 70s with low-to-moderate humidity levels (dew points near 60).  Skies are mostly clear, though high clouds may arrive around morning, with lows in the low 60s in the cooler suburbs to the upper 60s downtown.  Light winds.

Tomorrow (Saturday): The morning hours are mostly dry, as temperatures climb through the 70s.  But we’ll see an increase in clouds as a cold front sinks south from the north.  Areas west and northwest of the District have a 20-30 percent chance of showers by noon.  During the afternoon, as temperatures rise into the low and mid-80s, there’s roughly a 50-50 chance of showers throughout the region.  If you have plans to be outdoors you might be fine, you might not… so keep an eye on radar.  Showers that develop should be scattered and intermittent.  Winds are from the west around 5-10 mph.

Saturday night: There’s a good chance of showers (maybe a rumble too) Saturday evening (60 percent) but they’ll tend to be episodic and scattered – so not a washout.  They should begin to clear by dark, with overnight lows mostly in the 60s to near 70 (downtown). Light winds.

Sunday: Becoming mostly sunny, breezy, less humid and delightful.  Highs reach the low-to-mid 80s with winds from the northwest at 10-20 mph.

See Camden 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.

Pollen: Grasses, trees and weeds are LOW; mold spores are HIGH

Sunset at East Falls Church metro August 1 (Kevin Wolf via Flickr)

Bit by bit, D.C.’s losing daylight: It’s a somewhat depressing thought: over the course of August, Washington, D.C. loses 1 hour and 7 minutes of daylight.  By August 31, the sun rises at 6:36 a.m. and sets at 7:39, compared to 6:09 a.m. and 8:19 p.m. for sunrise and sunset on August 1.

Kathryn Sullivan nominated to be NOAA Administrator: President Obama has recommended acting NOAA Administrator Kathryn Sullivan for the permanent job. Sullivan, a former astronaut, would fill the slot vacated by Jane Lubchenco.  More information at Climate Central: Obama Nominates Sullivan as NOAA Administrator

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.
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Jason Samenow · August 2, 2013

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