All-time Record Hottest and Coldest Temperatures Ever Recorded in Jacksonville, Florida

Weather temperatures have been officially kept in Jacksonville, Florida since 1871. These are the all-time record hottest and coldest temperatures ever recorded in Jacksonville since 1871.

Located in northeastern Florida along the Atlantic Ocean, the city of Jacksonville tends to have a slightly milder climate than the extremes that can be found in the Sunshine State. This is born out by the differences between the all-time hottest and coldest temperatures ever recorded in Jacksonville, compared to the all-time hottest and coldest temperatures recorded in the state of Florida.

The difference between the all-time hottest and coldest temperatures ever recorded in Jacksonville is 97 degrees. The difference between the all-time hottest and coldest temperatures ever recorded in the state of Florida is 111 degrees; a difference of 14 degrees.

Record Hottest and Coldest Temperatures Ever Recorded in Jacksonville, Florida

All-time Record Hottest Temperature Ever Recorded in Jacksonville is 104 Degrees

The hottest temperature ever officially recorded in the city of Jacksonville is 104 degrees, which has occurred on two different dates. The first time it was 104 degrees in the city was on July 28, 1872, and the second time was on July 11, 1879.

While both of those dates were over 130 years ago, Jacksonville has had similar hot weather in recent times. It was 103 degrees on July 20, 2000, and as recently as 2010, on both June 15th and July 30th, it was 102 degrees.

As a bit of weather trivia some might find hard to believe, the record hottest temperature in Jacksonville of 104 degrees is exactly four degrees hotter than the all-time hottest temperature ever recorded in Miami, Florida. Jacksonville is roughly 340 miles north of Miami.

• Hottest Temperature Ever Recorded in Florida is 109 Degrees 

The all-time record hottest temperature ever recorded in the state of Florida is 109 degrees, which occurred on June 29, 1931, in Monticello. Named for Thomas Jefferson's Virginia estate, Monticello is the county seat of Jefferson County, Florida, and is located about 140 miles west of Jacksonville.

The difference between the all-time hottest temperature ever recorded in Jacksonville (104) and the all-time hottest temperature ever recorded in the state of Florida (109) is five degrees. Not a huge difference, but still a significant statistical difference.

All-time Record Coldest Temperature Ever Recorded in Jacksonville is 7 Degrees

The coldest temperature ever officially recorded in the city of Jacksonville is 7 degrees, which occurred on January 21, 1985. The city of Jacksonville averages 15 days a year when the temperature drops below freezing.

• Coldest Temperature Ever Recorded in Florida is -2 Degrees 

The coldest temperature ever officially recorded in the state of Florida is -2 degrees, which occurred on February 13, 1899, in Tallahassee during the Great Blizzard of 1899.

The Great Blizzard of 1899 was a massive storm that reached across the eastern United States and south into Florida. The temperature was 10 degrees in Jacksonville during the Great Blizzard of 1899.

The difference between the all-time coldest temperature ever recorded in Jacksonville (7) and the all-time coldest temperature ever recorded in the state of Florida (-2) is nine degrees. Not a huge difference, but another statistically significant difference.

Overall, the city of Jacksonville has a slightly milder climate than the extremes that can be found in the state of Florida.