The Washington Post

PM Update: Chilly night, rain arrives tomorrow

After a decent weekend, temperatures have temporarily fallen back a little below normal with highs reaching near 50 and into the lower 50s this afternoon. But with loads of sunshine, and a forgiving breeze, it’s not feeling too bad out there as long as you’ve got a little layering action going on. Spring lovers rejoice! The coming period looks pretty solid after we get past tomorrow night.

Temperatures: Latest D.C. area temperature map powered by iMapWeather (base map by Google). Click and hold on map to pan. Double-click to zoom. Refresh page to update. See larger map on our Weather Wall.

Through Tonight: We’ve got another chilled night ahead as temperatures drop near freezing in the coldest suburbs to the mid-and-upper 30s most other spots. Clouds are likely on the increase throughout as well, and while there could be a stray sprinkle (mainly south of the area) after midnight, I would not count on it.

Tomorrow (Tuesday): There may be some sun early in the morning, but overall I’d call this a cloudy day. Scattered light rain tries to work into the area by afternoon or evening, though it is probably near or after sunset that the main rain threat arrives before continuing through the overnight. Clouds help keep highs near 50 or into the low 50s.

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

Dual-pol radar: Frank Johnson, chief meteorologist at WBTW South Carolina, writes about upgrades coming to a radar dome near you over the next two years. Already installed at Vance Air Force Base in Enid, Oklahoma, dual polarization or “dual-pol” radar will help observers better understand what is falling from the sky as well as identifying tornadoes with greater ease. Currently, Doppler radars send out one horizontal beam capable of detecting differences between heavy and light activity by how strongly the signal is bounced back to the source. Dual-pol adds a second, this time vertical, beam which helps identify the shape and size of objects on radar. Read more!

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.

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