The Washington Post

PM Update: Partly cloudy this evening, a fine Friday, somewhat humid

The surprise showers in a few spots this afternoon arose from a weak warm front passing through the region. Said front has turned our winds out of a southerly direction which means increasing humidity from now into the holiday weekend. While moderately humid Friday, it should be mainly dry.

Through Tonight: The southerly flow provides a good deal of cloud cover at times. The means a warm evening compared to previous nights. Lows range from the low 60s in the cooler suburbs to the upper 60s downtown. A sprinkle or shower can’t be ruled out - especially after midnight in the northern suburbs.

Tomorrow (Friday): A very summer-like day for those getting a jump start to the last long weekend of summer. Under partly sunny skies, highs rise into the mid-80s with moderately high humidity. Winds are from the south at around 10 mph.

See David Streit’s forecast through early next week. And if you haven’t already, join us on Facebook and follow us on Twitter

Pollen update from Walter Reed: Tree pollen is LOW, grass pollen is MODERATE, weed pollen and mold spores are HIGH.

Notable August records: New York City and Philadelphia (even before Irene) both had their wettest months on record. In Houston, the heat during August was analyzed to be a 1 in 10,000 year event. And Denver had its hottest August on record. Aware of any other August weather records? Post them...

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.

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