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The Week Ahead: Humidity to Wane and then Wax

Jason Samenow @ 12:11 AM

After a sticky weekend, the air will gradually become less humid through Thursday. But by Friday, muggy conditions will likely return and become entrenched for the weekend.


Forecast Confidence: High-Very HighWarm, not as humid. Behind the front that slowly moved through last night, the air will become a bit dryer and a shade cooler. High temperatures will be in the mid 80s (compared to low 90s yesterday) under partly sunny skies, with dewpoints in the low 60s (compared to near 70 yesterday). Overnight, it should be mostly clear, with lows in the upper 60s downtown and low 60s in the suburbs.

Week at a Glance

Hottest Day: Saturday (High of 93)
Coolest Day: Thursday (High of 85)
Dry Days: Monday through Thursday
Rain Chances: Friday (25%), Saturday (20%), and Sunday (30%)
The Week's Wild Card: How hot does it get during the weekend? Early guidance suggests Saturday could be on the steamy side.
Climatological Average High/Low: 86-84/68-67

Pictured: A partly sunny afternoon at RFK Stadium Saturday for the DC United game. By photographer Kevin Ambrose.


Forecast Confidence: HighJust like Monday. Conditions really should not vary significantly from today -- with partly to mostly sunny skies and highs in the mid 80s. A wave along a front to our southeast could increase cloud cover a bit, but I think most rain should stay away. Tuesday night will be partly cloudy with lows in the upper 60s downtown and low 60s in the suburbs.


Forecast Confidence: HighSeasonable -- on the cusp of even dryer air. Before the leading edge of a pleasant Canadian air mass arrives late in the afternoon, we'll have a mix of sun and clouds, with temperatures in the mid to upper 80s and average humidity (dewpoints in the low to mid 60s). Overnight, the dryer air will assert itself as dewpoints drop into the 50s which will allow temperatures to fall into the upper 50s in the suburbs, and low to mid 60s downtown.


Forecast Confidence: High-Very HighNicest day of the week? Relatively cool and dry high pressure will be centered to the north. Accordingly, expect sunny skies and comfortable humidity levels with high temperatures in the low to mid 80s. Clouds may increase a bit overnight as the high pressure area moves offshore and a warm front approaches from the west. Low temperatures should range from 60-65 (suburbs-city).


Forecast Confidence: Medium-HighIncreasing humidity. Shower? The warm front passing through the area may trigger a shower in the afternoon (25%). Otherwise, expect a mix of clouds and sun, and increasing humidity, with highs in the mid 80s. Overnight, it should be mostly clear with lows 65-70 (suburbs-city).


Forecast Confidence: Medium-HighHot and Humid. With southerly flow and a tropical airmass moving in, conditions may be a bit uncomfortable. Highs should be in the low to mid 90s, and it will likely feel hotter than that given humidity levels. Overnight, expect muggy conditions, with lows 70-75 (suburbs-city)


Forecast Confidence: Medium-HighSticky -- PM Storm? Saturday's humid, tropical airmass will likely remain overhead. A cold front approaching areas to our west may trigger a few storms that affect our region (30%). Highs should be 90-95 under partly cloudy skies.

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