Washington, DC – Blistering heat and scattered thunderstorms will slam the District of Columbia Thursday, July 17th, bringing dangerous conditions to Washington’s busiest roads and neighborhoods just as the afternoon commute begins. Commuters on I-395 and I-66 should brace for slick pavement, brief downpours, and the risk of power outages as severe weather moves in.
According to the National Weather Service, Thursday’s highs will soar to 96°F, with a heat index topping 105°F by midday. Storms could ignite after 2 p.m., threatening heavy rain, gusty winds, and flash flooding in low-lying areas across the District and neighboring Virginia suburbs. Residents are urged to avoid non-essential travel during peak storm hours, charge electronic devices early, and secure outdoor items before the weather turns. Stay alert for changing conditions, especially if you plan to be outdoors or on local roadways Thursday afternoon and evening.
Impacts will be especially pronounced along major corridors including I-395, I-66, and the Capital Beltway, where brief but intense downpours could quickly reduce visibility and trigger hazardous driving conditions. PEPCO crews are on standby for scattered outages as thunderstorm winds roll through. City officials recommend keeping emergency kits accessible, checking local alerts, and delaying travel if possible.
This unsettled summer pattern continues into Friday with a 40% chance of additional thunderstorms and temperatures near 91°F, while Saturday brings a 50% chance for more storms and highs around 87°F. The weather will offer only brief relief Sunday, with showers likely again (70%) and cooler air arriving Monday and Tuesday.
What’s Next:
Thunderstorm chances remain in the forecast through early next week. Expect updates and possible new alerts as conditions evolve.
Five-Day DC Weather Outlook (Thursday, July 17th – Tuesday, July 22nd)
- Thursday, July 17: Mostly sunny, 96°F. Chance of storms after 2 p.m. (30%).
- Friday: High 91°F, mostly sunny, afternoon thunderstorms possible (40%).
- Saturday: Partly sunny, 87°F. Storms likely, especially late (50%).
- Sunday: High 89°F, showers and storms likely (70%).
- Monday: Cooler, 87°F. Showers possible (30%).
- Tuesday: Partly sunny, high near 86°F. (40% chance of storms).
Stay tuned for the latest advisories as summer storms continue in the District.
