Weather DC: Live Updates as Severe Storms and Flash Floods Threaten Washington Tonight

Washington, D.C., is sweating through an early-season heat burst today, with afternoon highs projected to peak near 93-95 °F—roughly 15 °F above the seasonal norm. NBC4’s Storm Team4 midday update warns that the steamy air will fuel late-day thunderstorms capable of gusty winds and brief downpours, most likely after 5 p.m. Why it feels so hot • A ridge of high pressure parked over the Mid-Atlantic has pumped humid Gulf air into the District since Monday. • Heat index values could touch 98 °F downtown during the mid-afternoon commute. • If Reagan National Airport officially hits 95 °F, today would tie the 1991 record for May 20. Storm timing and threats • Thunderstorm line arrives from the west between 5 p.m. and 8 p.m. • Main hazards: 40-60 mph wind gusts, lightning, brief torrential rain, isolated power outages. • Temperatures crash into the mid-70s immediately after the storms pass. Cooling trend on the way The same cold front ending today’s heat will shave nearly 20 °F off daytime readings Thursday. Forecast highs fall to the upper 70s with crisp overnight lows in the upper 50s—more typical for late May, a notable reversal from the month’s chilly start documented by the Capital Weather Gang earlier this month. Weekend outlook for the District • Friday: Mostly sunny, breezy, 78 °F. • Saturday: Bright sun, low humidity, morning 57 °F → afternoon 82 °F—ideal for outdoor events on the National Mall. • Sunday: Increasing clouds, 30 % chance of a late-day shower, highs near 84 °F. How to stay safe today 1. Limit strenuous outdoor activity between 1 p.m. and 4 p.m. 2. Hydrate—aim for at least 2 liters of water if you’ll be outside. 3. Keep pets off hot pavement; surface temps can top 130 °F. 4. Secure lightweight patio furniture before storms arrive. SEO keywords: Washington DC weather, DC forecast, District of Columbia heat wave, DC thunderstorms, weekend weather DC, May weather Washington DC