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Posted at 05:00 AM ET, 06/21/2012

D.C. area forecast: Blazing heat with record setting potential

* Heat advisory through 10 p.m. *

EXPRESS FORECAST

Today: Strong sunshine, humid. 96-101. | Tonight: Slight t’shower risk, humid. 71-80. | Tomorrow: Hot, p.m. t’storms likely. 92-97. | Get Express Forecast by E-mail

TODAY'S DAILY DIGIT

A somewhat subjective rating of the day’s weather, on a scale of 0 to 10


The only good things about today are it is not quite hot enough to spontaneously combust and the humidity is not quite at rainforest levels. Get the Digit on Twitter| Discuss on Facebook

FORECAST IN DETAIL


The sun is as high in the sky as it gets around here today and it makes quite the searing hot impression. Just make sure it isn’t a burning one (UV Index very high)!

With highs near 100, this is a good day to park yourself indoors or at least on the edge of some body of water. While there is a slight risk of a thundershower this evening, the main chance comes tomorrow when a cool front arrives. This front only knocks about 10 degrees off highs for the weekend. We must wait for a reinforcing front on Monday to return us to more pleasant levels.

Today (Thursday): Temperatures start warm and don’t stop until they reach the mid-to-upper 90s with a smattering of 100 degree readings possible. All high temp and high min temp records are on the line today. The record high/high min temps are: DCA 98/76, IAD 98/70 and BWI 100/79. The air is so warm and stable that even clouds will be hard to come by. Humidity pushes heat indices up to 100-105. Breezes are too light to help. Confidence: High

Tonight: There is a slight chance of a few t-showers making it from the Blue Ridge into the area (20% chance). The sunset at 8:37 pm gives little relief as evening readings swelter in the humid 80s with no breeze. Lows eventually reach the 70s but will be near 80 downtown. Yuck! Confidence: High

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

Tomorrow (Friday): Skies are likely to sport a few clouds in the morning with more of them by afternoon as a “cold” front approaches the area. This is likely (70% chance) to set off thunderstorms. The severe risk is marginal, but damaging winds cannot be ruled out in a few spots. Highs still reach the low-to-mid 90s before the showers/storms get a chance to knock them down. Breezes are mainly light except in the stronger storms. Confidence: Medium-High

Tomorrow night: A few thundershowers are still likely to linger into the evening (60% chance). Most rain amounts are likely to end up in the .25 to .50” range. Evening readings should slip to the mid-to-upper 70s if the showers are as extensive as expected.. Lows end up in the mid-60s to lower 70s. Confidence: Medium

A LOOK AHEAD

Saturday may still be slightly warmer than normal but it is still a notable improvement. Highs can be expected to reach the mid-to-upper 80s. The humidity is more manageable as well. Sunny skies make for a nice day to be around the pool or at the beach. Evening readings slip into the 70s making it pleasant to sit out and enjoy the rising crescent moon on the western horizon. Overnight lows should range through the 60s. Confidence: High

Sunday is another “typical” summer day with a sunny start and a few pop up clouds in the afternoon. Highs reach the mid-to-upper 80s with a few spots likely to make 90. The evening is tolerably warm with upper 70s to lower 80s. There is a chance of a few thundershowers mainly after midnight as the next cold front approaches. Rain chances are 30%. Lows reach the upper 60s to lower 70s. Confidence: Medium

Mondayis expected to see a brisk breeze from the south as a fairly strong cold front should push through the area in the afternoon. There is a 60% chance of thundershowers with this front. Highs should manage mid-to-upper 80s before rains knock then down. Confidence: Low-Medium

By  |  05:00 AM ET, 06/21/2012

Categories:  Forecasts

 
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