9:35 a.m. Update: Widespread showers and downpours that are now mainly north and west of D.C. and I-95 should let up during the late morning into early afternoon, with isolated to scattered showers and storms still possible during the afternoon into evening.
FORECAST IN DETAIL
We’re as tired forecasting this same old weather as you probably are living it. There are gradual changes in the works, however. While it’s the same old story today with the likelihood of more showers and storms, rain chances trend lower starting tomorrow just in time for the Fourth, though we can’t shake them altogether. As shower chances decrease, temperatures do the opposite, climbing into the 90s this weekend with the humidity going nowhere fast.
Today (Wednesday): No real change in the pattern today. Like recent days, we may see plenty of dry periods, but scattered showers and thunderstorms could develop at any time. The chance of any given location getting wet at some point during the day is about 60%. The swamp-fest continues with high humidity, partly to mostly cloudy skies and highs in the mid-80s. A moist breeze blows from the south around 10 mph. Confidence: Medium
Tonight: Shower chances decrease to 20-30% by mid-to-late evening. Light winds from the south keep the muggy air in place as lows drop back to near 70 to the low 70s under partly cloudy skies. Confidence: Medium
For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…
Tomorrow (Independence Day): The juiciest stream in the atmosphere shifts just enough to the west to reduce, but not eliminate, our potential for showers and storms. We’ll call it a partly sunny 4th with a 30% chance of a shower or thunderstorm (40% chance out west toward the mountains) mainly in the afternoon or early evening. We’re hotter and still humid with highs in the upper 80s to near 90, and breezes at 10-15 mph from the south. Confidence: Medium
Tomorrow night: We hang on to a 30% chance of a shower or thunderstorm through early evening, but as we get toward fireworks time those chances should be decreasing. It’s a partly cloudy and typically muggy Fourth of July night with evening temperatures dropping into the low 80s and upper 70s, and overnight lows down to near 70 to the low 70s. Confidence: Medium
A LOOK AHEAD
Friday through Sunday continues the trend of lower shower/storm chances and higher temperatures. The humidity stands firm as highs each day reach near 90 to the mid-90s, with partly sunny skies and a 20-30% chance of mainly an afternoon/evening shower or storm. Confidence: Medium