Hurricane Hattie was the strongest and deadliest tropical cyclone of the 1961 Atlantic hurricane season, reaching peak intensity as a Category 5 hurricane. The ninth tropical storm, seventh hurricane, fifth major hurricane, and second Category 5 of the season, Hattie originated from an area of low pressure that strengthened into a tropical storm over the southwestern Caribbean Sea on October 27. Moving generally northward, the storm quickly became a hurricane and later major hurricane the following day. Hattie then turned westward west of Jamaica and strengthened into a Category 5 hurricane, with maximum sustained winds of 165 mph (270 km/h). It weakened to Category 4 before making landfall south of Belize City on October 31. The storm turned southwestward and weakened rapidly over the mountainous terrain of Central America, dissipating on November 1.

The 1961 Atlantic hurricane season was a very active Atlantic hurricane season, with an accumulated cyclone energy (ACE) total of 189. The season, however, was an average one in terms of named storms. The season featured eight hurricanes and a well above average number of five major hurricanes. It was previously thought that the season had a record-tying seven major hurricanes, before the Atlantic hurricane reanalysis project downgraded two storms in 2019. Two Category 5 hurricanes were seen in 1961, making it one of only seven Atlantic hurricane seasons to feature multiple Category 5 hurricanes in one season. The season started on June 15, and ended on November 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. The first system, an operationally unclassified tropical depression, formed offshore east Central Florida on June 10, but dissipated a few days later. Next, Hurricane Anna developed in the eastern Caribbean Sea near the Windward Islands on July 20. It brought minor damage to the islands, as well as wind and flood impacts to Central America after striking Belize as a hurricane. Anna caused one death and about $300,000 (1961 USD) in damage. Activity went dormant for nearly a month and a half, until Hurricane Betsy developed on September 2. Betsy peaked as a Category 4 hurricane, but remained at sea and caused no impact.