PM Update: Fantastic Friday evening; Severe weather threat increases through weekend

Temperature Map

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

We question whether a July day in D.C. could get any better than this. Clear blue skies, low-to-mid 80s, and a dew point hovering around 40 degrees, leading to very low humidity. Crazy talk! Live outside tonight while the weather’s good, because storms creep back into the forecast Saturday and humidity increases. We hate to say it, but it looks like we’re going to end our rain-free weekend streak with a chance of severe weather on Sunday.

Through Tonight: A truly gorgeous evening in and around the District, which means patios will be packed. High pressure is to thank for your dinner al fresco.  The temperature drops to the upper 60s in the city, and possibly the mid-60s in our cooler suburbs. Winds are light, less than 5 mph out of the south.

Tomorrow (Saturday): Heat and humidity are on the rise and storms could be on the radar. Winds from the south spread warm and more humid air across the region, feeding a 30% chance of a few late afternoon or evening thunderstorms. Highs should reach the upper 80s, and could approach 90 in the city. Storm chances diminish temporarily overnight with lows in the low-to-mid 70s.

Sunday: The severe risk increases on Sunday, with a 60% chance of storms. There could be a few separate rounds of storms during the course of the day and evening. Storms could be severe with damaging winds and hail the main concern, though the possibility of a tornado cannot be ruled out. Indeed, the Storm Prediction Center has issued a slight risk of severe weather for our area. At the very least, we could see periods of heavy downpours. Highs on Sunday again head for the upper 80s to 90.

See A. Camden Walker’s forecast into early next week. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

Pollen: Tree, grass, and weed pollen is LOW. Mold spores are MODERATE.


The sun sets behind the National Monument flags on Thursday. (John Sonderman via Flickr)
Angela Fritz is an atmospheric scientist and The Post's deputy weather editor.
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