Washington is waking up in a steam bath. Clear skies and muggy air greeted the city this morning, with temperatures near 72°F at Reagan National Airport. The National Weather Service is calling for a full-on hot stretch this holiday week, with readings climbing into the upper 80s to around 90°F today, then spiking sharply by midweek. If you have outdoor plans, the midday heat and humidity will be the main troublemakers through the Independence Day run-up.
Today And Wednesday, July 1
Tuesday, June 30 should stay mostly sunny, and that sunshine will push temperatures into the upper 80s to around 90°F, helped along by light southerly winds. Wednesday, July 1 is the real attention grabber. Highs are expected to surge to around 98°F, with heat index values up to about 106. A Heat Advisory is in effect Wednesday from 11 AM to 8 PM EDT, according to the National Weather Service Baltimore/Washington forecast office.
Thursday And Friday: Extreme Heat Watch
The heat does not back off as the long weekend approaches. An Extreme Heat Watch is posted for much of the region from Thursday morning, July 2, through Friday evening, July 3. Peak afternoon temperatures are likely to top 100°F, with forecast highs in the low 100s both days. Heat indices could climb into the 110s in some spots east of the Blue Ridge, which makes outdoor activity during the midday and afternoon hours more than just uncomfortable and potentially dangerous. Residents are urged to shift strenuous work and events to early morning or evening and to make sure vulnerable neighbors and pets have reliable access to cooler spaces.
Storm Chances And Independence Day
Scattered afternoon showers and thunderstorms are possible on Wednesday, with storm chances increasing Friday and into the Independence Day weekend. Some storms could pack a punch with strong downburst winds, frequent lightning, and heavy rain. Saturday, July 4 is expected to stay hot, with a high near 102°F and a chance of showers and thunderstorms after 2 PM. That combo means outdoor fireworks, parades, and picnics may face both sweltering heat and storm delays. Keep an eye on changing radar and have a backup plan ready for any outdoor celebrations.
Winds, Waters And Commutes
Southerly breezes will pick up at times, with gusts up to about 18 mph from Tuesday night into Wednesday morning. Small Craft Advisories are in effect for portions of the bay and nearby coastal waters this afternoon into tonight, so boaters should plan accordingly. On land, heat can strain public transit and roadways, since hotter surfaces and heavier air conditioning demand can slow things down. Commuters may want to allow extra time and stay hydrated while traveling. Pet owners should avoid walking animals on hot pavement during the peak heat of the day, since asphalt can burn paws quickly.
How To Stay Safe
With multiple days of extreme heat lining up, simple precautions become essential. Stay hydrated, seek air-conditioned shelter during peak afternoon hours, and limit strenuous activity between late morning and early evening on Thursday and Friday. Check on elderly neighbors or anyone who may not have reliable cooling, carry water if you must be outside, and follow watches and advisories from the National Weather Service before heading out. If someone shows signs of heat stroke, such as confusion, a very high body temperature, or loss of consciousness, call 9-1-1 immediately.
