All-Time Extremes • Top 5 Years
| Jacksonville All-Time Extremes (1871-2012) | |
| Temperature | |
| Record high | 104 on July 11, 1879 and July 28, 1872 |
| Record low | 7 on January 21, 1985 |
| Record lowest maximum | 27 on February 13, 1899 |
| Record lowest daily mean | 18.5 on February 13, 1899 and January 21, 1985 |
| Record warmest minimum | 86 on July 26, 1872 and June 23, 1950 |
| Record warmest daily mean | 94 on July 26, 1872 |
| Earliest freeze | November 3, 1954 |
| Latest freeze | April 8, 2007 |
| Average date of first freeze | December 6 |
| Average date of last freeze | February 26 |
| Greatest number of consecutive days with low temp at or below freezing |
8 from December 16-23, 1901 & January 17-24, 1977 |
| Greatest number of consecutive days with minimum 20 or below |
3 from December 24-26, 1983 & January 20-22, 1985 |
| Greatest number of consecutive days with maximum 90 or above |
50 from July 8 to August 26, 2010 |
| Rainfall | |
| Maximum rainfall in one year | 82.27" in 1947 |
| Minimum rainfall in one year | 30.44" in 1927 |
| Maximum rainfall in one month | 23.32" in June 1932 |
| Minimum rainfall in one month | 0.00" in October 2010 |
| Maximum rainfall in 24 hours | 10.17" on September 5-6, 1950 |
| Maximum rainfall in one hour | 5.29" on May 27, 1975 |
| Greatest number of consecutive days without precipitation (including trace amounts) |
33 from September 30 to November 1, 2010 |
| Greatest number of consecutive days without measurable precipitation |
46 from October 31 to December 15, 1970 |
| Greatest number of consecutive days with precipitation |
17 from August 30 to September 15, 2001 |
| Snowfall | |
| Maximum snowfall in 24 hours | 1.9" on February 13, 1899 |
| Maximum snowfall in one year | 1.9" in 1899 |
| Greatest depth of snow on ground | 1.9" on February 13,1899 |
| Greatest number of consecutive days with snow | 2 on numerous occasions (last time December 22-23, 1989) |
| Greatest number of consecutive days with at least a trace or more of snow on the ground |
4 from December 23-26, 1989 |
| Earliest snowfall | Trace on November 28, 1911 |
| Latest snowfall | Trace on March 28, 1955 |
| Barometric Pressure | |
| Highest pressure | 30.74" (1041.0 mb) on January 4, 1979 |
| Lowest pressure | 28.90" (978.7 mb) in September 1928 |