The highest temperature ever recorded in the city of Halifax was on July 10, 1912, and the lowest temperature recorded was on February 18, 1922. The March 2012 North American heat wave brought unusually high temperatures to the city of Halifax. On March 22, the mercury climbed to at the Halifax Windsor Park weather station, and at Halifax Stanfield International Airport. In spite of the possibility of high temperatures, in a normal year there is only one day that goes above . Halifax also has a modest frost count by Canadian standards due to the maritime influence, averaging 131 air frosts and 49 full days below freezing annually. On average the frost-free period is 182 days, ranging from May 1 to October 31.