 Tropical cyclones have affected Florida in every month of the year but January and March . Nearly one @-@ third of the cyclones affected the state in September , and nearly three @-@ fourths of the storms affected the state between August and October , which coincides with the peak of the hurricane season . Portions of the coastline have the lowest return period , or the frequency at which a certain intensity or category of hurricane can be expected within 86 mi ( 139 km ) of a given location , in the country . Monroe County was struck by 26 hurricanes since 1926 , which is the greatest total for any county in the United States . 
