Climate
Jacksonville has a humid subtropical climate, with mild weather during winters and hot weather during summers. High temperatures average 64 to 91 °F (18-33 °C) throughout the year. High heat indices are not uncommon for the summer months in the Jacksonville area. High temperatures can reach mid to high 90s with heat index ranges of 105-115 °F. The highest temperature ever recorded in Jacksonville was 105 °F (43 °C) on July 21, 1942. It is common for daily thunderstorms to erupt during a standard summer afternoon. These are caused by the heating of the land and water, combined with extremely high humidity.
During winter, the area can experience hard freezes during the night. Such cold weather is usually short lived. The coldest temperature recorded in Jacksonville was 7 °F (-14 °C) on January 21, 1985, a day that still holds the record cold for many locations in the eastern half of the US. Even rarer in Jacksonville than freezing temperatures is snow. When snow does fall, it usually melts before touching the ground, or upon making contact with the ground. Most denizens of Jacksonville can remember accumulated snow on only one occasion—a thin ground cover that occurred a few days before Christmas of 1989.
Jacksonville has suffered less damage from hurricanes than other east coast cities. The city has only received one direct hit from a hurricane since 1871, although Jacksonville has experienced hurricane or near-hurricane conditions more than a dozen times due to storms passing through the state from the Gulf of Mexico to the Atlantic Ocean. The strongest effect on Jacksonville was from Hurricane Dora in 1964, the only recorded storm to hit the First Coast with sustained hurricane force winds. The eye crossed St. Augustine, with winds that had just barely diminished to 110 mph, making it a strong Category 2 on the Saffir-Simpson Scale.
Rainfall averages around 52 inches a year, with the wettest months being June through September.
(Source: Wikipedia.org)
