Down to 24 at 4pm
Here are my predictions for 12 midnight
DCA 21
Camp Springs 14
BWI 13
Annapolis 16
(Annapolis with much larger body of water should consistently be 3 degrees milder and not consistently 3 to 8 degrees colder than DCA )
Looked at BWI for -5 or colder January and got 2014, 2004, 1994, 1988, 1982 and stopped Almost all February were not as much below average but still wintry