The Washington Post

PM Update: Wednesday brings blast of heat, oppressive humidity

* Heat advisory noon to 8 p.m. Wednesday *

The heat trickled into the region today. Tomorrow it’s on full blast. Add on top of that moderate-to-high humidity levels, and it’s not only uncomfortable, but potentially hazardous. Remember to drink plenty of water Wednesday and take time to cool off if you’re outside for long periods.

Through Tonight: It feels like the thick of summer, although we await the “official” start of the season for another day. Skies are mostly clear, with lows ranging from the upper 60s in the cooler suburbs to the low-to-mid 70s downtown.

Wednesday: An intensely hot sun beats down on us (wear sunscreen - UV Index to be very high to extreme), raising the afternoon mercury into the mid-to-upper 90s. Factor in moderate-to-high humidity levels (dew points 67-71), and it will feel like 100-105. There’s not much of breeze to offer relief, with winds from the northwest around 5-10 mph at best.

See Matt Rogers’ forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter. For related traffic news, check out Dr. Gridlock.

Pollen: All counts are LOW, except weed pollen is LOW-MODERATE.

Jason is currently the Washington Post’s weather editor. A native Washingtonian, Jason has been a weather enthusiast since age 10.


Success! Check your inbox for details. You might also like:

Please enter a valid email address

See all newsletters

Show Comments
Most Read


Success! Check your inbox for details.

See all newsletters

Your Three. Videos curated for you.
Play Videos
What can babies teach students?
Unconventional warfare with a side of ale
A veteran finds healing on a dog sled
Play Videos
A fighter pilot helmet with 360 degrees of sky
Is fencing the answer to brain health?
Scenes from Brazil's Carajás Railway
Play Videos
How a hacker group came to Washington
The woman behind the Nats’ presidents ‘Star Wars’ makeover
How hackers can control your car from miles away
Play Videos
Philadelphia's real signature sandwich
Full disclosure: 3 bedrooms, 2 baths, 1 ghoul
Europe's migrant crisis, explained