Washington, D.C.

Washington D.C. Swelters Under 95-Degree Heat with High Humidity, NWS Issues Hazardous Weather Outlook

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Published on July 26, 2025
Washington D.C. Swelters Under 95-Degree Heat with High Humidity, NWS Issues Hazardous Weather OutlookSource: Google Street View

Brace yourselves, D.C. dwellers—it's a humid one out there today, with the National Weather Service (NWS) reporting a soup-like mix of 87% humidity and temperatures poised to hit a sweltering 95 degrees; even the clouds can't stop the heat as the "heat index values as high as 102" are in the forecast, according to the latest update from NWS. And it's not just hot, the weather boffins over there have a few thunderstorms in mind for today, scattered across the afternoon and evening, so if you find yourself out and about later expect to get a little rumble as your company.

Now for tonight, and let's not mince words here, the sticky situation continues—those earlier storms might just creep into the wee hours with a 40% chance of precipitation and the temperature only dipping to a stifling low around 76 degrees, so keep those fans on and A/C cranked if you're trying to snag some shut-eye, the NWS cautions. As if Sunday could be any different, Mother Nature's scheduled an encore performance with a "chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm," which only heightens the sauna feel with expected "heat index values as high as 103."

The weather script reads familiar for Monday—thigh-high heat, a high near 95, and the tease of thunderstorms in the afternoon because why settle for just relentless sunshine, right? But the real scorcher comes Tuesday with thermometers flirting with triple digits—99 degrees to be exact, and no, that's not an early April Fool's joke, the forecast warns. Tuesday night won’t provide much respite either, resting at a "low around 78."

Let's talk hazards because this isn't just summer fun and games—the National Weather Service isn't mincing words with this week's Hazardous Weather Outlook, which speaks of "Hot and humid conditions continue through Wednesday next week, with heat index values of 105 to 109 possible during the afternoon hours each day," and if that's not enough to make you sweat just reading it, they're throwing in the potential for "isolated instances of Flash Flooding" come Sunday afternoon.