The Washington Post

PM Update: Fewer clouds Friday, keeping comfortable

For the sixth consecutive day the mercury hit 95 or higher. Luckily, humidity levels were manageable as a bubble of dry air moved overhead. The dry air gets kicked out this evening, and storms may develop over the region as the atmosphere moistens. Independence Day is hot and humid with another possible round of storms.

Through Tonight: Isolated to scattered storms are possible (20 percent chance) through 7 pm or so, especially out towards the mountains. A larger cluster of storms (NOT a derecho) to the northwest may try to push south and east after that (30-40 percent chance) - timing window 8 p.m.-midnight. Any storms that move through could produce strong gusty winds, lightning and heavy rain. Outside of storms, it’s partly cloudy and warm, with lows 69-76 (suburbs-city).

Wednesday, July 4th: It’s another hot, steamy day. Humidity levels are higher than today with heat at similar levels. Highs reach the mid-to-upper 90s with heat indices from 99-104. Thunderstorms are possible (30 percent chance) from the late afternoon (mainly west) into the evening (for the entire region). It’s not yet clear if these will be isolated or more widespread. We will have additional details tomorrow.

See Matt Rogers’forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter. For related traffic news, check out Dr. Gridlock.

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.

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