The Washington Post

PM Update: Thursday brings hint of summer

It’s warm, it’s muggy… you know the drill for much of the time from now through September. On the bright (yes, sunny) side, shower and storm chances have taken a bit of a breather today. Highs are now reaching the mid-80s most spots. It’s looking like a pretty decent evening for any outdoor activities.

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: There could be an extremely isolated shower or storm (10-20% chance) into early evening, but it seems quite unlikely. Other than that, expect partly-to-mostly clear skies through the night. Temperatures will drop a bit, though dew points may rise even more – toward the upper 60s in spots – meaning we’ll be hard pressed to find morning lows below the mid-to-upper 60s, perhaps even 70 downtown.

Tomorrow (Thursday): I’m sure some of you are eagerly awaiting that first 90-degree day of 2011, and tomorrow provides the best odds thus far. We should again see plenty of sunshine, with perhaps a few period of cloudier conditions – mostly sunny overall. Given the mild start, we won’t have far to run for real heat, and afternoon highs should top out near 90 or into the lower 90s. We’ll need to keep an eye on potential storminess arriving from the west late day, but currently it appears it would hold off till after sunset if it arrives at all.

See Dan Stillman’s forecast through Memorial Day Weekend. And if you haven’t already, join us on Facebook and follow us on Twitter .

Pollen update: Tree pollen is MODERATE at 62.3 grains/cubic meter (pine, hickory and walnut are causing the problems mainly). Grass pollen is MODERATE (high for the local area) at 15.02 grains/cubic meter. Weed pollen is LOW at 2.56 grains/cubic meter and mold is MODERATE at 8720.61 spores/cubic meter. Peak grass season is usually right around Memorial Day.

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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