▁down p ours . ▁The ▁mid - S outh , ▁especially ▁Tennessee , ▁and ▁the ▁northern ▁hal ves ▁of ▁Mississippi , ▁Alabama ▁and ▁Georgia , ▁have ▁maximum ▁month ly ▁ra inf all ▁amounts ▁in ▁winter ▁and ▁spring , ▁ow ing ▁to ▁cop ious ▁G ulf ▁mo ist ure ▁and ▁cl ash es ▁between ▁warm , ▁mo ist ▁air ▁from ▁the ▁G ulf ▁of ▁Mexico ▁and ▁cold , ▁dry ▁air ▁from ▁Canada ▁during ▁the ▁cold ▁season . ▁Here , ▁December , ▁March ▁or ▁April ▁are ▁typically ▁the ▁wet test ▁months ; ▁August ▁to ▁October , ▁the ▁dri est ▁months ▁( for ▁example , ▁at ▁T up elo , ▁MS , ▁Hun ts ville , ▁AL ▁and ▁M emph is , ▁T N ). ▁ ▁Winter s ▁are ▁cool ▁in ▁the ▁northern ▁areas ▁like ▁Tennessee , ▁Virginia , ▁Maryland , ▁and ▁western ▁North ▁Carolina , ▁with ▁average ▁high s ▁in ▁the ▁ ▁range ▁in ▁January . ▁Far ther ▁south , ▁winter s ▁become ▁more ▁m ild ▁across ▁interior ▁eastern ▁North ▁and ▁South ▁Carolina , ▁Georgia , ▁and ▁Alabama , ▁with ▁average ▁January ▁high s ▁in ▁the ▁ ▁range . ▁As ▁one ▁ne ars ▁the ▁G ulf ▁of ▁Mexico ▁coast al ▁plain ▁and ▁coast al ▁areas ▁of ▁Georgia ▁and ▁the ▁Carol inas , ▁winter s ▁become ▁warm , ▁with ▁day time ▁high s ▁near ▁or ▁over ▁, ▁until ▁far ▁enough ▁south ▁in ▁central ▁Florida ▁where ▁day time ▁high s ▁are ▁above ▁. ▁Winter s ▁tend ▁to ▁be ▁very ▁dry ▁and ▁sun ny ▁across ▁Florida , ▁with