D.C. area forecast: Still watching the threat of some late-day summer storms

September 1, 2013

Today’s Daily Digit

A somewhat subjective rating of the days weather, on a scale of 1 to 10.

7
Ya take the good with the bad – warm with some sun for much of the day, but possible late-day storms could be disruptive.

Express Forecast

Today: Partly sunny, humid. 40-50% chance of p.m. storms. Highs: Upper 80s to near 90.

Tonight: 40-50% chance of evening storms. Lows: Low-to-mid 70s.

Tomorrow: Partly sunny, humid. 50% chance of p.m. storms. Highs: Upper 80s to low 90s.

FORECAST IN DETAIL


Radar & lightning: Latest D.C. area 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.

It may not be the ideal forecast for the rest of your Labor Day weekend. But believe me, it could certainly be much worse. Warm days and partly sunny skies keep those of you at the pool or beach happy, even with the chance that late-day showers and thunderstorms send you scurrying for shelter. Even better, once the weekend is in our rear-view mirror, the weather takes a turn for the terrific by Tuesday afternoon, with dry and mild air moving in behind a cold front.


Today (Sunday): September begins on a summery note with partly to mostly sunny skies, high humidity, and highs headed for the upper 80s to near 90. Clouds may increase during the afternoon, however, and chances for mainly late afternoon showers and storms are 40-50% – a bit higher than yesterday thanks to a more energetic set up. Winds are light out of the south/southwest near 5-10 mph. Confidence: Medium-High

Tonight: Shower and storm chances hang around that 40-50% range through evening before declining overnight. It’s another summery night, with the still air feeling a bit stuffy and lows only dipping to the low-to-mid 70s beneath mostly cloudy skies. Confidence: Medium-High

How is the end of the holiday weekend shaping up? Keep reading for the forecast through midweek…

Tomorrow (Labor Day): Not the picture-perfect, end-of-summer Labor Day forecast some might have hoped for, but it does have its redeeming qualities. For instance, partly sunny skies and highs in the upper 80s to low 90s make for another great pool day despite the continued high humidity. The late afternoon brings another chance of showers and storms, this time around 50%, as a cold front approaches. Still not much wind to speak of outside of any storms, just light breezes from the southwest near 5-10 mph. Confidence: Medium-High

Tomorrow night: The front finally pushes through overnight, but until then there’s still a 40% chance for a passing shower or thunderstorm. The front doesn’t look like it’ll get through in time to give us much overnight cooling, with lows mostly in the low-to-mid 70s, perhaps some upper 60s in the north and west suburbs. Skies stay mostly cloudy as winds shift to come from the west/northwest toward morning. Confidence: Medium

A LOOK AHEAD

With any luck, the front clears the area early Tuesday morning. However, confidence is low enough that I can’t rule some lingering morning clouds and a shower or two. By afternoon, though, we should be improving with dropping dew points and clearing skies as highs reach the mid-80s. Open the windows Tuesday night as drier air settles in even more. Skies are full of stars and temperatures drop to the upper 50s to mid-60s (suburbs to city). Confidence: Medium

Wednesday and Thursday feature some really spectacular weather. The A/C gets a bit of a break and its hard to resist a long lunch outside, as highs aim for the low-to-mid 80s with plenty of sunshine and low humidity. Confidence: Medium-High

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Brian Jackson · September 1, 2013