D.C. area forecast: Humidity still here through tomorrow, then cool and dry into weekend

Today’s Daily Digit

A somewhat subjective rating of the days weather, on a scale of 1 to 10.

6
Humidity hangs tough, as it remains nice and warm for those who like the summery stuff.

Express Forecast

Today: Partly sunny and warm. 30% chance of p.m. t’storms. Highs: Mid-to-upper 80s.

Tonight: Mild with a 30% chance of evening t’storms. Lows: Upper 60s to low 70s.

Tomorrow: Partly to mostly cloudy. 70% chance of showers and t’storms. Highs: Upper 70s to low 80s.

FORECAST IN DETAIL


Radar & lightning: Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

The humidity is here, as surely everyone has noticed, but the good news is it’s not here to stay. A cold front on track to come through Thursday night kicks the mugginess to the curb, leaving us with cooler and much drier air through the holiday weekend. Before then, we have another warm one today and a potentially showery transition day tomorrow.

Today (Wednesday): Pretty much a typical summer-like day around here, though thankfully minus any intense heat (we’re not ready for that quite yet!). Could be some patchy early-morning fog or drizzle and can’t rule out an isolated morning shower. It’s partly sunny thereafter with plenty of humidity as highs reach the mid-to-upper 80s. We pick up a 30% chance of a few showers or thunderstorms during the mid-afternoon into early evening, especially west and north of D.C. Anything that does develop could turn severe. Winds are light from the south around 10 mph. Confidence: Medium

Tonight: That 30% chance of a few showers and thunderstorms into early evening, especially north and west of D.C., should dissipate as we get into mid-evening. We’re left with a partly to mostly cloudy and mild overnight and lows in the upper 60s to low 70s. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…

Tomorrow (Thursday): An approaching cold front combined with the warm and humid air in place increases shower and thunderstorm chances to around 70%, with the threat mainly focused on late morning through afternoon. Partly to mostly cloudy skies should limit highs to the upper 70s to low 80s despite winds around 10-15 mph from the south, and may limit severe potential as well, but we’ll have to keep an eye on it. Confidence: Low-Medium

Tomorrow night: The threat of showers and thunderstorms stays with us Thursday night as the cold front crosses the area, though chances generally decrease as we head through the night. Lows drop to near 60 to the mid-60s as cooler and drier air filters in. Confidence: Low-Medium

A LOOK AHEAD

The front may still be close by early Friday, so we’ll keep a 30% chance of a shower in the morning. Eventually skies should turn at least partly sunny, and many of you will love the crisp, dry air with highs in the low-to-mid 70s. An increasing breeze from the northwest, however, may have it feeling cooler than some would like. Friday night is mostly clear and very cool with lows down to the 40s for many of the suburbs to near 50 downtown. Confidence: Medium

Saturday and Sunday are shaping up as a pair of partly to mostly sunny days with highs near 70 to the mid-70s. The main difference between the two days looks to be the wind, which may be quite gusty on Saturday while just a touch breezy by Sunday. Saturday night and Sunday night lows settle in the upper 40s to mid-50s. Confidence: Medium

Our next disturbance in the atmosphere threatens a chance of showers Sunday night into Memorial Day, though it’s too uncertain to even put a percentage on it at this point. Whatever the shower situation, it’s likely cloudier on Monday with highs somewhere in the 70s. Confidence: Low

Dan Stillman is a meteorologist and editor for the Capital Weather Gang. He earned an M.S. in Meteorology from Texas A&M University, and a B.S. in Atmospheric, Oceanic and Space Sciences from the University of Michigan.
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Jason Samenow · May 21, 2013