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D.C. area forecast: Warmth and humidity on the rise, storm risk Thursday, but a nice weekend

Today’s Daily Digit

A somewhat subjective rating of the days weather, on a scale of 1 to 10.

More sunshine and near normal temperatures offer today a respectable digit upgrade

Express Forecast

Today: Partly to mostly sunny. Highs: 86-89.

Tonight: Partly cloudy. Lows: 65-72.

Tomorrow: Mostly sunny, humid. Highs: 87-90.


Temperature Map

Temperatures: Latest D.C. area temperature map. See interactive map on our Weather Wall.

Humidity and August are usually the best of friends who normally stick together.  But this year, they have had some falling out and are mostly passing acquaintances.  They only check in with each other every now and then, which is a good thing for August since humidity is known to be a bad influence.  But like a bad penny, it has found its way back to August’s door for the next few days.

From late Wednesday into Thursday and perhaps early Friday the humidity invites in more unsavory characters – possible thunderstorms, before it takes another welcome hiatus in time for the weekend.

***Dense Fog Advisory this Morning with Patchy  Fog Issues in Western to Southern Areas***

Today (Tuesday): High pressure exerts more control over the area, allowing sunshine to surge today (after some patchy morning fog) as temperatures return to the middle to upper 80s for the first time since last Tuesday.  Humidity should be at moderate levels with dew points in the middle 60s mainly.  Winds are light, mostly from the north in the morning and then switching to coming from the south in the afternoon. Confidence: High

Tonight: Partly cloudy with light breezes as temperatures dip to the middle 60s in the outer suburbs to low 70s in the city.  Moderate humidity means it’ll be better to run the air conditioners probably. Confidence: High

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…

Tomorrow (Wednesday): Mostly sunny skies and slightly warmer temperatures in the upper 80s, but a spot or two could touch the 90-degree mark.  Humidity breaks into the moderate to high range with dew points up around 70-72 now. Light winds mainly come from the south. Some late day storms are possible out toward the mountains (30% chance out there). Confidence: High

Tomorrow night: Partly to mostly cloudy with lows in the muggier upper 60s to low 70s with light winds from the south and southwest. There is a 20% chance of a shower or passing thundershower overnight. Confidence: Medium


Thursday is another more humid day, but now an approaching cool front becomes a catalyst for potential showers and storms along with more cloud cover.  The odds have increased to 60% with the main focus on the afternoon into the evening.  Highs are again in the upper 80s with moderate to high humidity, but duration of peak temperatures should be shorter due to clouds and shower/storm risks. Thursday night is also mostly cloudy with lows in the upper 60s to low-to-mid 70s along with a 40% chance of showers and storms.  Confidence: Medium

Friday should see partly to mostly sunny skies, although a stray shower is possible early in the morning (30% risk) with the passage of a frontal system.  Temperatures will not drop right away as northwest flow helps enhance high temperatures up into the middle to upper 80s.  But the big story is that humidity will take another hiatus for the upcoming weekend, falling to low levels by the afternoon. Friday night sees temperatures falling into the low to middle 60s with low humidity (a great candidate for windows-open sleeping weather!). Confidence: Medium

The weekend is looking fantastic at this point.  August gets another break from its clingy pal humidity, and we benefit with low to middle 80s for highs, partly to mostly sunny skies, and comfortable evenings in the 60s (upper 50s for lows in outer suburbs on Sunday morning). Confidence: Medium

Matt Rogers is a meteorologist and a Petworth resident. He is president and co-founder of Commodity Weather Group in Bethesda, Md., which focuses on weather risks for the energy and agriculture sectors. Like most meteorologists, his passion for weather started extremely early in life and has never let go.
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