Question: when does it get cold in south alabama

title: Climate of Alabama
text: Summers in Alabama are one of the hottest in the United States , with high temperatures averaging over 90 ° F ( 32 ° C ) throughout the summer in many parts of the state . The heat of summer is tempered in the extreme south by the winds from the Gulf of Mexico which often blow inland by up to 10 -- 15 miles , and in the north by the elevation above the sea . Afternoon high temperatures are highest in Montgomery ( 92.4 degrees daily from June through August ) and in Tuscaloosa . The average nighttime humidity is highest in southwest Alabama , which results in the highest average ( high plus low temperature ) for reporting stations in the state . While afternoon highs in Mobile are cooler than their inland sister cities , the remaining warm air trapped near the Gulf at night results in the average annual temperature for Mobiles being the highest in the southwest along the coast . Cool morning temperatures help keep the northeast highlands among the more temperate locations in the state and lowest in the northeast among the highlands . Thus at Mobile the annual mean is 67 ° F ( 19 ° C ) , the mean for the summer 81 ° F ( 27 ° C ) , and for the winter 52 ° F ( 11 ° C ) ; and at Valley Head , in De Kalb county , the annual mean is 59 ° F ( 15 ° C ) , the mean for the summer 75 ° F ( 24 ° C ) , and for the winter 41 ° F ( 5 ° C ) . At Montgomery , in the central region , the average annual temperature is 66 ° F ( 19 ° C ) , with a winter average of 49 ° F ( 9 ° C ) , and a summer average of 81 ° F ( 27 ° C ) . The average winter minimum for the entire state is 35 ° F ( 2 ° C ) , and there is an average of 35 days in each year in which the thermometer falls below the freezing - point . At extremely rare intervals the thermometer has fallen below zero ( - 18 ° C ) , as was the case in the remarkable cold wave of the 12th - 13 February 1899 , when an absolute minimum of - 17 ° F ( - 29 ° C ) was registered at Valley Head . The highest temperature ever recorded was 111 ° F ( 44 ° C ) in Centreville in 1925 . Close competing temperatures occurred in 2007 when during the August heat wave , three instances of official 108 degree heat were recorded at Maxwell AFB in Montgomery , each tying the all - time record for the capital city . Winters are generally mild in Alabama , as they are throughout most of the southeastern United States , with average January low temperatures around 40 ° F ( 4 ° C ) in Mobile , around 31 ° F ( − 1 ° C ) in Huntsville , around 35 ° F ( 2 ° C ) in Montgomery , and around 33 ° F ( 1 ° C ) in Birmingham . 

Answer: answer: The average winter minimum for the entire state is 35 ° F (2 ° C), and there is an average of 35 days in each year in which the thermometer falls below the freezing - point.   Winters are generally mild in Alabama with average January low temperatures around 40 ° F (4 ° C) in Mobile, around 31 ° F (− 1 ° C) in Huntsville, around 35 ° F (2 ° C) in Montgomery, and around 33 ° F (1 ° C) in Birmingham.