February Fakeout
That annual event in New England when the weather is so mild that, not only do you think of spring, you think it is around the corner. Usually followed by a foot of snow.
Olivia: OMG, Dad, it's SOOOO warm today...I think Spring is on it's way!

Dad: No, Munchie, it's the February Fakeout. Hand me the Ice Melt.