Washington is rolling straight out of a muggy night and into a full-on heat wave on Wednesday, July 1, 2026, with clear skies, mid 70s at sunrise, and swampy humidity offering almost no overnight relief. Temperatures are headed toward around 100°F this afternoon, and it will feel more like the low to mid 100s once you factor in the heat index. Officials say the worst of it is still coming Thursday and Friday, when the city will bake under extreme heat and sweat through hot nights in the upper 70s to low 80s.
What To Expect Today
According to the National Weather Service, highs near 100°F are on tap this afternoon, Wednesday, July 1, 2026, with heat index values up to 107°F. Those "feels like" numbers could jump to 110 to 115°F on Thursday and Friday, July 2 and 3. Southwest winds will blow around 5 to 9 mph with gusts up to about 18 mph, and overnight lows are expected to stay in the upper 70s to low 80s, which means very little cooling after dark. There is a slight chance of isolated showers and thunderstorms late this afternoon and evening, mainly where bay or river breezes collide with a surface trough.
Heat Advisories And Local Resources
The NWS has issued a Heat Advisory for Wednesday, July 1, from 11 a.m. to 8 p.m., and an Extreme Heat Watch for Thursday and Friday, July 2 and 3. Both highlight an elevated risk of heat related illness for anyone working or staying active outside. The District opens cooling centers and other supports during heat emergencies, and residents can check the District’s Heat Emergency Plan for maps, hours, and transportation options. If you or a neighbor needs help getting to a cooling site, call the Shelter Hotline at (202) 399-7093 or dial 311.
Storms And The Holiday Weekend
Forecasters at the National Weather Service say that while storm coverage will be limited today, any afternoon thunderstorm that pops up could deliver strong downburst winds and frequent lightning, briefly turning outdoor events into a hazard zone. The chance for scattered, potentially severe thunderstorms climbs on Friday and into the Independence Day weekend as the upper ridge starts to break down. Expect afternoon and evening storms through Sunday, and make sure your plans for picnics, parades, or fireworks include an indoor backup if warnings are issued.
How To Stay Safe
Avoid strenuous outdoor exercise during the hottest part of the day, drink water frequently, and get into air conditioning if you feel dizzy, faint, or nauseous, since those are early signs of heat exhaustion. Employers should build in frequent rest breaks and provide shade for outdoor crews. Heat stroke is life threatening, so call 911 if someone becomes confused, loses consciousness, or stops sweating. Keep an eye on updated forecasts before heading out, and after a storm passes wait at least 30 minutes after the last thunder before going back outside.
We first flagged this heat surge in a June 29 update, and this story now refreshes that forecast as advisories go up and details sharpen. For background on how this pattern set up and a rundown of local cooling resources, revisit our earlier warning that D.C. is set to sizzle.
