Dianne told you right. Could be in the 70/80's or 30's in Huntsville or Dothan in March or just about anywhere on the central Gulf Coast. It won't be cold but a day or two then the wind gets back out of the South and Spring for several days till the next cold front comes thru.
Gulf Shores would give you your best bet though but call for reservations at Gulf SP. Right now it's pretty full of Snowbirds and they usually don't leave till April.
Dave, Miss Sue and Lucy the Scotty
00 Windsor, 40', Grand Cherokee Limited