Temperatures today were at their lowest since the 12th thanks to biting northwesterly winds drawing in chilly arctic air from Canada. Officially, the high at National peaked at 36 degrees after a low of 27 early this morning.

Tonight and Tomorrow:
Surface winds will continue to gradually diminish overnight as an area of high pressure slides into the Southeast. Temperatures tonight will drop into the upper teens out to the west, and lower 20s around the city.

Tomorrow, expect off and on cloudiness through the day as an area of upper level energy gets spit out south central Canada. Any precipitation (and it would be snow) should stay on the western sides of the Appalachians, but light snow showers cannot be ruled out overnight Monday.

A stark warm-up is in sight Wednesday and Thursday as southwesterly winds at the surface and aloft pull warmer air into the region. Mid to upper 60s are not out of the question Thursday.