D.C. area forecast: Sunnier Sunday skies; rain odds increase to start work week

August 10

Today’s Daily Digit

A somewhat subjective rating of the day’s weather, on a scale of 1 to 10.

9
With a next-to-nil shower chance, and a slight dip in humidity, what’s not to like?

Express Forecast

Today: Partly sunny. Highs: Mid-80s.

Tonight: Turning mostly cloudy. Lows: Low-to-mid 60s.

Tomorrow: Mostly cloudy, isolated p.m. shower/storm. Highs: Low-to-mid 80s

FORECAST IN DETAIL

Temperature Map

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

We may be salvaging another mostly fine weekend after all, as long as you didn’t get stuck under a slow-moving isolated shower yesterday.  With the precipitation looking to stay suppressed to the south and southwest today, score another point for us.  We take a turn for the worse during the workweek though with a couple of different systems raising our rain chances.  The highest chances look to be late Monday and through Tuesday, with yet another shot of cooler and drier air working in by midweek.

Today (Sunday): Drier air and a weak ridge of high pressure tend to keep the showers trapped just off the the south and west, but a stray light sprinkle cannot be completely ruled out (10% chance, and a bit higher in southwest ‘burbs).  That should also be enough to keep skies partly to maybe mostly sunny as well, though that sunshine may be filtered at times, much like yesterday was.  Humidity should dip slightly, despite a light southerly wind, and highs top out in the mid-80s. Confidence: Medium-High

Tonight: A few more clouds can be expected during the overnight hours, especially as we move towards the dawn.  There’s still a non-zero chance for a shower but again they’re confined further south and west.  Winds are still lightly blowing from the south, and lows drop into the low-to-mid 60s. Confidence: Medium-High

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the midweek…

Tomorrow (Monday): We’re stuck between two ares of low pressure on Monday, one off the southeast coast and one over the Great Lakes region.  While probably trending cloudier as the day goes, most of the it stays dry, with shower chances beginning to rise toward evening (30%).  Winds turn to more of a southeasterly direction, and that means a more humid day, even if highs only reach the low-to-mid 80s. Confidence: Medium-High

Tomorrow night: Showers and thunderstorms continue to encroach on our area late evening and into the overnight as a warm front pushes into and through the area. This raises our rain chances to about 50%.  Skies remain mostly cloudy, and lows are in the upper 60s to near 70 degrees. Confidence: Medium

A LOOK AHEAD

Tuesday has a bit of a tropical feel to it.  A couple rounds of showers and storms are possible with a bit of a lull likely between the overnight/morning storms, and more developing during the day.  During the lull, temperatures may rise into the mid-80s for highs. Though it’s also possible that with some easterly winds off the relatively cooler ocean, that lull could have some lighter showers and/or mist within it and hold temperatures down closer to 80.  Scattered showers and storms continue into the overnight before beginning to wane by dawn. Overnight lows in the upper 60s/lower 70s are expected. Confidence: Low-Medium

Aside from a few straggling showers early in the morning, skies should clear as we begin to dry out on Wednesday.  I’ve got a feeling we’ll be pulling out the “nice day sun” a few more times as another area of cool, dry high pressure settles in across the eastern United States.  It may be warranted here, with plenty of sunshine, and highs topping out in the low 80s or so. Confidence: Medium

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