10:20 a.m. update: The deluge has paused. We do expect more rain to develop this morning into the afternoon. The heaviest may focus south of Washington, although the overall intensity should be less everywhere than yesterday and last night. Rain totals thus far: Reagan National Airport (3.75″), Andrews Air Force Base (4.71″), Baltimore-Washington International Airport (3.84″), Dulles International Airport (1.6″), The Washington Post (2.91″), Takoma Park (5.73″), Gaithersburg (5.48″) and Brookville, Md. (6.68″), Olney (6.01″), Leesburg (3.87″). The map below shows widespread rainfall of 2.5 to 4 inches over the last 24 hours, with isolated spots up to and over 6 inches!
Original post (from 5 a.m.)…
TODAY’S DAILY DIGIT
A somewhat subjective rating of the day’s weather, on a scale of 0 to 10.
3/10: Fewer downpours than Friday, but not a whole lot better, either.
Today: Periodic rain. Highs: Upper 60s to low 70s.
Tonight: Rain ending, some clearing. Lows: Mid-50s to mid-60s.
Tomorrow: Turning mostly sunny. Highs: Near 80 to mid-80s.
View the current weather conditions at The Washington Post headquarters.
FORECAST IN DETAIL
We’ve already seen the worst of the rain from this event, but unfortunately not the last of it. And just because we’ve seen the worst doesn’t mean today won’t be sloppy given heavily water-logged soils at this point. Thankfully, there is sunshine around the corner. We should see a good deal as soon as tomorrow.
Today (Saturday): Rain is around much of the day, at least periodically. It’s not quite the same as yesterday because we’re now on the back side of this low pressure. That means slightly cooler and drier air will be filtering in, which lowers the intensity overall. The flash-flood risk should be lower, but river flooding and other rises of water will continue. Winds are more noticeable, though. They are as high as 20 to 25 mph, with higher gusts, out of the north and northwest. High temperatures may top 70, but much of the day could feature temperatures in the 60s. Confidence: Medium
Tonight: Rain should try to totally end in the evening, if not prior. Just a slight chance of a shower from sunset through midnight or so. Winds are still up, about 10 to 15 mph out of the north. Lows are kind of chilly for the end of July. They’ll fall to the 50s in the cooler suburbs and into the low or mid-60s downtown. Confidence: Medium-High
Tomorrow (Sunday): There’s a slight chance a few raindrops could be around early in the day, but more probably skies are trending clear or already there. This is a positive trend as we close; initially it looked as though the whole weekend could be lost. We should end up with a very sunny day by midday and afternoon. This will help temperatures return to levels more typical of summer, although not exactly hot. We’re talking near 80 to mid-80s. Confidence: Medium-High
Tomorrow night: Skies remain mostly clear, and that helps bring another cool overnight. Lows reach the upper 50s to the north and west of the Beltway, near 60 elsewhere and a little warmer than that in the city. Winds are light. Confidence: Medium
A LOOK AHEAD
Although we talk about weather averages a lot, having an average day isn’t exactly typical. Monday, however, should be rather average. In this case, that means lots of sun and highs in the mid- to upper 80s. Confidence: Medium
By Tuesday it’s starting to feel like summer in Washington once again. Humidity is up, and temperatures rise to highs near 90. Not a whole lot otherwise, as we see mostly sunny skies continue to grace the area. Confidence: Medium