Heat wave begins Monday, bringing hotter weather and higher temperatures to DC area

After an ideal summer weekend for wandering outdoors, forecasts for the D.C. region this week see temperatures climbing upward, with heat indexes possibly breaking 100 degrees.

Stay inside — and stay cool. Here’s what you need to know.

Starting Monday, an extended run of 90-degree days begins, with humidity levels and the dew point increasing from Tuesday onward. The region may experience increasing heat indexes of over 100 degrees through the week and upcoming weekend.

“We’re heading into a heat wave, and some days will be more intense than others, particularly in the back half of the week,” 7News First Alert Meteorologist Brian van de Graaff said.

With humidity expected to remain high in the overnights, don’t expect too much relief after dark. Plan your days and pace yourself accordingly, with plenty of fluids and cool shelter during the day.

D.C. is operating under an Extended Heat Emergency plan, in place Monday through Friday because of the hot weather. This designation activates cooling centers in the area for residents who need them.

Find a list and map of the cooling centers on the District’s interactive map here.

The District’s spray parks and pools are open for residents to cool off on these hot days.

While the skies are expected to remain sunny with few clouds, the National Weather Service is preparing for heat to peak on Saturday, with the current forecast nearing 99 degrees that day.

“It could feel, at times, like 102 to maybe 105,” van de Graaff said, adding that the heat and humidity won’t likely become “extreme” until this Saturday through Monday.

Staying cool — and safe — during a heat wave

The District is encouraging residents to stay indoors over the next few days if possible, check on neighbors — particularly those who are especially vulnerable to the heat, including elderly people, young children and those with disabilities — and wear loose, lightweight clothing.

Pets should be kept indoors, given plenty of water and walked early in the morning ahead of peak temperatures. For animal emergencies, including animals left outside or in cars in the heat, call the Humane Rescue Alliance at 202-723-5730.

“Remember your heat safety tips: hydrate, take plenty of breaks in the shade if you must be outside,” said 7News First Alert Meteorologist Mark Peña. “Otherwise, avoid strenuous outdoor activity during the afternoon and apply and reapply sunscreen.”

Symptoms of heat stroke and heat exhaustion include throbbing headaches, chills, disorientation and dry, red skin. Be aware of these signs, and call 911 if you or someone you know might be experiencing a heat-related illness.

Free transportation to cooling centers is available. To make arrangements for yourself or someone you know, call the shelter hotline at (202) 399-7093 or dial 311.

Current weather:


Hot. Highs in the upper 80s to lower 90s, with a heat index in the lower to middle 90s.
Winds: South 5-10 mph

Partly cloudy, warm. Lows in the upper 60s to middle 70s.
Winds: South 5-10 mph

Hotter than Monday. Highs in the lower to middle 90s, heat index could reach 100.
Winds: South 5-10 mph

Hot. Highs in the upper 80s to middle 90s, with a heat index in the lower to middle 90s.
Winds: East 5-10 mph

Hotter than Wednesday. Highs in the lower to middle 90s, with a heat index in the middle to upper 90s.

WTOP’s Ivy Lyons contributed to this report.

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Joshua Barlow

Joshua Barlow is a writer, composer, and producer who has worked for CGTN, Atlantic Public Media, and National Public Radio. He lives in Northeast Washington, D.C., where he pays attention to developments in his neighborhood, economic issues, and social justice.

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