Washington is waking up to thick clouds and muggy air this morning, with temperatures stalled in the mid-70s. A few spotty showers could slip through early, but the real concern arrives later on Tuesday, July 21, 2026, as the risk for strong to severe thunderstorms ramps up. From mid-afternoon into the evening, the area could see damaging wind gusts, torrential downpours and sudden street flooding in vulnerable spots.
Afternoon Severe Threat
According to the latest discussion from the National Weather Service Baltimore/Washington, scattered storms are expected to fire as a warm front pushes north. Forecasters are calling out damaging straight-line winds as the main issue, along with isolated large hail and the chance of an isolated tornado. Any stronger storm could unload very heavy rain in a short time and trigger brief flooding.
Timing And What To Expect
Scattered showers and a few rumbles of thunder are on the table through mid-morning, but the more intense storms are most likely between about 2 p.m. and 7 p.m. Localized downpours could quickly drop around a quarter- to half-inch of rain, while slower-moving storms this evening may leave higher totals behind. South winds will run on the breezy side, and gusts into the low 20s (mph) are likely in and near the stronger cells.
Prepare And Stay Safe
Plan on disruptions to the afternoon and evening commute, and do not leave loose outdoor furniture or equipment at the mercy of the wind. Event organizers should be ready to pivot. The D.C. Homeland Security & Emergency Management office urges residents to head inside a sturdy building when lightning approaches and to avoid driving through flooded streets altogether. It is a good idea to charge phones and other devices, pack rain gear for later and move any outdoor activities indoors if you can.
Looking Ahead
Once the front moves through, a cooler pattern takes hold. High temperatures are expected to ease back into the low- to mid-80s by Thursday, with only modest chances for rain into the weekend. Nights also turn more comfortable, with lows dipping into the low 60s away from the water.
