According to USA Today, Old Man Winter isn't giving up without a fight.  Even though spring begins Tuesday, any real, sustained warmth for most Americans will likely be a few weeks away.

The next two weeks will feature unusually chilly temperatures from coast to coast.  By early to mid-April, temperatures should finally flip to warmer than average for most of the nation.

The greatest likelihood of above average temperatures is across the nation's southern tier, from the Southwest across Texas and along the Gulf Coast.

The only part of the nation that should see persistently cool weather through the spring is the northern Rockies, mainly in Montana.