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PM Update: Calm and mild tonight, warm again tomorrow; Pacific hurricane season begins

Temperature Map

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

After some lingering clouds into midday, warm air eventually won the battle most spots. But, the size of the victory was still dependent on exactly where you are. Just off to the south and southwest, highs reached into the mid-and-upper 80s, while up in our northern suburbs those highs were closer to 80.

Through Tonight: There’s a 20% chance of a shower or thundershower through evening. Otherwise, we’re mostly to partly cloudy, trending partly to mostly cloudy overnight. Should be nice and mild for any outdoor plans — perhaps a sidewalk dinner? With milder air making itself at home, along with dew points near 60, don’t expect lows to drop much below the upper 50s to low-and-mid 60s.

Tomorrow (Thursday): Skies are partly cloudy early, but we should eventually see increased clouds and a slight 30% chance of late day showers or thundershowers. Winds are from the west, and that’s usually a good warm flow, so highs have little trouble heading for the mid-80s, or even a bit higher.

See my forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

May 13, 2013 – Last rays of evening sun in Meridian Hill Park. (Craig Hudson via Flickr)

Eastern Pacific hurricane season begins: There are still two weeks till the Atlantic hurricane season starts on June 1, but things are officially underway one ocean to the west where the season starts today. And, right on cue, we’ve got our first tropical depression well off the coast of Mexico. The depression should become Tropical Storm Alvin shortly, and the National Hurricane Center forecasts it to become a hurricane while spinning over open waters.

Pollen update: Grass pollen is on the rise, now rated moderate (nationally) or high (locally) at 11 grains per cubic meter of air. Tree pollen is also moderate at 76.68 grains. Weed pollen and mold spores are low.

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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