Tonight and Tomorrow:
Temperatures tonight should be seasonably pleasant, dipping into the mid 50s around DC, to near 50 closer to the Maryland state line. Showers will become more of a threat later tomorrow afternoon as a another upper level disturbance slides southwestward from Newfoundland. High temps tomorrow should be able to sneak into the lower to mid 70s under mostly cloudy skies.

Extended:
Temperatures by Father's Day will likely soar into the 90s as an area of high pressure slides to our south, transporting warm and humid air into the region. After Sunday, however, a general cooling trend is expected, and temperatures should return to near normal levels by early next week. A cold front is expected to cross the Mid Atlantic Wednesday afternoon, and will further lower temperatures into the lower 80s.

Image: Several members of the Short Range Ensemble Forecast Model (SREF) predict high temperatures near 90-92 degrees on Sunday afternoon. The average (bottom right) is near 88-90 for the immediate metro region.

Image courtesy of the Penn State E-Wall

107th US Open Weather=Fantastic:
While the weather for the first round of the 107th US Open at Oakmont Country Club wasn't quite ideal, mother nature should cooperate nicely for the remaining three rounds of the Open Championship. Temperatures will hover just around 80 degrees Friday, Saturday, and Sunday, and skies should remain mostly sunny to party cloudy. Very isolated showers may develop just east of the Pittsburgh, PA area, but should not be a threat to play.