Total number of Atlantic Basin storms to develop by month, from 1886-1995. Month Formed Tropical Storms Hurricanes Total Jan.-April 3 1 4 May 12 3 14 June 36 23 59 July 36 36 72 August 72 158 230 September 117 199 316 October 94 98 192 November 20 24 44 December 3 3 6 Hurricanes that hit the U.S. by month from 1900-1996 June: 11 July: 17 August: 39 September: 62 October: 24 November: 4