The warm, humid air ahead of a slow-moving cold front has fed scattered showers and storms today. The front pushes the muggy air out overnight. Warm sunshine and drier air move in Friday.

Through Tonight: Widely scattered showers and storms into this evening (20-50 percent chance), with the best odds south of the District (lowest odds north). Activity winds down and/or moves out by around sunset. Mostly cloudy skies gradually become partly cloudy late at night, with overnight lows from the low-to-mid 60s in the cooler suburbs to around 70 downtown. Winds are light.

Tomorrow (Friday): Mostly sunny and quite nice but perhaps a little warm for some. Humidity drops into the low-to-moderate range (dew points in the high 50s) with highs 85-89. Winds are from the northwest at 5-10 mph.

See David Streit’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.

(John Sonderman via Flickr)

Pollen: Counts are incomplete due to rain, but reported as low for trees, weeds, and grasses. Mold spores are moderate-high.