TODAY’S DAILY DIGIT
A somewhat subjective rating of the day’s weather, on a scale of 0 to 10.

4/10: Muggy 90s nothing to celebrate, but par for the course for July in the District, with more extreme heat on the way.

EXPRESS FORECAST

Today: Partly sunny, humid. Brief thundershower possible. Highs: Low to mid-90s.
Tonight: Muggy, chance of isolated evening thundershower. Lows: 70s to near 80.
Tomorrow: Serious, scorching heat! Highs: Mid-90s to near 100.

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FORECAST IN DETAIL

It’s a hot and humid week for sure, but even today’s muggy 90s are a pretty typical occurrence for the District in July. Tomorrow’s heat, however, looks to be of the more extreme variety, with record-setting highs near 100 in play. Add the humidity, and we’re looking at a potential heat index tomorrow of about 105-110.

Today (Wednesday): Temperatures should climb a bit higher than yesterday, thanks to a warmer breeze from the west around 5-10 mph. Highs head for the low to mid-90s under partly sunny skies, and with humidity still in the soupy range, the heat index could peak in the upper 90s to near 100. Can’t rule out a brief shower or thundershower at any point during the day. Confidence: Medium-High

Tonight: Still the chance of an isolated early-evening thundershower. Otherwise, the muggies are in full force, with partly cloudy skies and lows mainly in the 70s, perhaps holding up near 80 downtown. Confidence: Medium-High

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Tomorrow (Thursday): This looks like the hottest day of the bunch. With partly to mostly sunny skies, temperatures should soar to the mid-90s to near 100. The humidity remains way up there, likely pushing the heat index into the dangerous zone, around 105-110. Only a slight chance of an afternoon thunderstorm. The record highs for tomorrow are 100 (Reagan National Airport), 97 (Dulles International Airport), and 99 (Baltimore-Washington International Marshall Airport). Confidence: Medium-High

Tomorrow night: Some thunderstorms are possible, although the best chance may hold off until late evening or overnight. Simmering low temperatures make it only down to the 70s to near 80 again. Confidence: Medium


Yes, the dog days are here! Sophia Fiedler reaches down to pry a ball out of her dog Gonzo’s mouth to play fetch in the District yesterday. (Calla Kessler/The Washington Post)

A LOOK AHEAD

The heat should relent just a bit on Friday, but we’re still looking quite hot and humid with highs in the 90s. Pretty good chance we see some showers and thunderstorms at some point Friday into Friday night as a cool front comes through. Confidence: Medium

The front pushes to our south for the weekend. It may move far enough south that we can remove shower and storm chances from the forecast, but I’m not ready to commit just yet. Either way, we’re back to more reasonable heat levels, with highs around the upper 80s to low 90s, while the humidity drops a bit as well. Confidence: Low-Medium