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D.C. area forecast: A cool weekend, with rain odds up tonight into Sunday

Today’s Daily Digit

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

Clouds are on the increase, but pretty pleasant otherwise. Any rain risk holds off till late.

Express Forecast

Today: Increasing clouds. Highs: Upper 70s to low 80s.

Tonight: Mostly cloudy, chance of showers. Lows: 60s.

Tomorrow: Chance of showers, tapering. Highs: 72-78.


Radar & lightning: Latest regional 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.

A little storm system moving up the coast this weekend shouldn’t be too much of a pain as it slides by. In fact, today should end up pretty dry, and despite some lacking sun, we get the positive aspect of clouds helping keep things cooler than normal. August is still lurking though, perhaps trying to show itself again as we head into the work week.

Today (Saturday): High pressure holds tough for much of the day as a weak coastal low begins to form well to our southeast. Even though rain should hold off in the immediate area, clouds thicken and lower as the day wears on. Showers may come to our southern doorstep as we head toward dark, so I’ll introduce a 20% chance of them by late afternoon. Highs reach the upper 70s to near 80. Winds are from the southeast around 5 to 10 mph. Confidence: Medium

Tonight: Rain odds tick up, but it remains uncertain how much of the area gets rain and if the more consistent activity even makes it here. The most likely period for numerous showers is after midnight, and it’s about a 50-60% chance of such (northwest to southeast). Rain could add up in a few spots, though this doesn’t look like a huge deal, particularly north and west where it might not rain much at all. Lows make the 60s, low-to-mid mostly. Confidence: Low-Medium

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

Tomorrow (Sunday): With low pressure passing off the Delmarva, showers may remain likely into the morning or midday, but should also decrease in coverage with time. While weak, the system helps keeps clouds pretty numerous and holds us in a flow off the ocean via east/northeast winds around 5-10 mph. This means highs are probably held back in the 70s, probably about 72-78. Confidence: Medium

Tomorrow night: Skies remain mostly cloudy. There might be a passing shower or two, but most places should stay dry through the night. Lows fall to near 60 in the cooler spots to the mid-60s downtown. Confidence: Medium


Monday should bring some warmer temperatures back to the area as high pressure begins to build in. We’re still under the influence of an upper-level trough to the west, which means it’s probably partly cloudy at best, and trending cloudier with a shower/storm risk (30% chance) in the afternoon. Highs reach near 80 to the low 80s on a southerly wind. Confidence: Medium

By Tuesday, another bump up in the warmth and humidity is expected. It’s partly sunny with just a slight risk of an afternoon shower or storm. Highs are more August-like than we’ve been used to lately, heading for the mid-and-upper 80s. Confidence: Medium

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.
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Jason Samenow · August 16, 2013

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