Jacksonville Flooding by the Numbers

25 facts about rain, river levels, freezes and flood claims in Jacksonville. Each sentence names its place, its period and its source, so it reads correctly when quoted alone. Numbers marked calculated were worked out by Jax Water Damage Hub from public data; the method is on the sources page.

Updated November 12, 2026

1
Jacksonville's daily weather record, kept downtown from September 12, 1871 and later at Jacksonville International Airport, has rain readings for 156 years.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
2
The wettest day in Jacksonville's daily weather record since 1871 was September 26, 1894, with 9.82 in. of rain.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
3
From 1871 to 2026, Jacksonville's daily weather record logged 569 days with 2.04 in. of rain or more, the wettest 1 percent of its days.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
4
102 of Jacksonville's days with 2.04 in. of rain or more since 1871 came on or after January 1, 2000.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
5
Jacksonville's daily weather record has 39 days with 5 inches of rain or more between 1871 and 2026.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
6
During Hurricane Irma, Jacksonville's daily weather record shows 5.18 in. of rain on September 10, 2017 and 4.54 in. on September 11, 2017.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
7
During Hurricane Matthew, Jacksonville's daily weather record shows 6.28 in. of rain on October 7, 2016.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
8
The National Hurricane Center measured 9.20 inches of storm-total rain and a 75-knot gust at Jacksonville International Airport during Hurricane Irma in September 2017.
Source: National Hurricane Center: Hurricane Irma report.
9
The National Hurricane Center reports that in Hurricane Irma (2017) the St. Johns River set record flood stages at many Duval County gauges and flood water in Jacksonville streets reached 5 feet deep in places.
Source: National Hurricane Center: Hurricane Irma report.
10
During Hurricane Matthew on October 7, 2016, the NOAA tide gauge at Mayport in Jacksonville reached 5.14 feet NAVD88, its second-highest level since the hurricane of 1898, according to NWS Jacksonville.
Source: NWS Jacksonville: Quick Review of Major Hurricane Matthew.
11
During Hurricane Ian in September 2022, NWS Jacksonville recorded the St. Johns River at 2.71 feet above mean higher high water at the Main Street Bridge and 3.06 feet at the Buckman Bridge.
Source: NWS Jacksonville: Hurricane Ian post-storm report.
12
June is Jacksonville's wettest month by the 1991-2020 normals, at 7.60 in..
Source: 1991-2020 normals via ACIS, Jacksonville Area.
13
By 1991-2020 normals, June through September bring 28.81 in. of Jacksonville's 53.40 in. of yearly rain.
Source: 1991-2020 normals via ACIS, Jacksonville Area, calculated by Jax Water Damage Hub on November 12, 2026.
14
Jacksonville's daily weather record counts 48 nights at or below 20°F from 1871 to 2026; the coldest was 7°F on January 21, 1985.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
15
Since the 1996-97 winter, Jacksonville's record shows 7 nights at or below 20°F, the pipe-freeze temperature this site uses.
Source: ACIS daily record, Jacksonville Area (JAXthr), calculated by Jax Water Damage Hub on November 12, 2026.
16
FEMA's NFIP records hold 6,030 flood insurance claims for 31 residential Jacksonville ZIP codes, with $213,935,673 paid, as of November 12, 2026.
Source: FEMA OpenFEMA NFIP Redacted Claims v3, calculated by Jax Water Damage Hub on November 12, 2026.
17
Jacksonville's residential ZIP codes have 2,050 NFIP flood claims dated 2017, the year of Hurricane Irma, with $143,528,349 paid.
Source: FEMA OpenFEMA NFIP Redacted Claims v3, calculated by Jax Water Damage Hub on November 12, 2026.
18
Jacksonville's residential ZIP codes have 545 NFIP flood claims dated 2016, the year of Hurricane Matthew, with $19,087,048 paid.
Source: FEMA OpenFEMA NFIP Redacted Claims v3, calculated by Jax Water Damage Hub on November 12, 2026.
19
Among Jacksonville's residential ZIP codes, 32210 has the most NFIP flood claims on record: 913.
Source: FEMA OpenFEMA NFIP Redacted Claims v3, calculated by Jax Water Damage Hub on November 12, 2026.
20
Among Jacksonville's residential ZIP codes, 32210 has received the largest NFIP payments on record: $44,891,716.
Source: FEMA OpenFEMA NFIP Redacted Claims v3, calculated by Jax Water Damage Hub on November 12, 2026.
21
The City of Jacksonville holds a Class 6 rating in FEMA's Community Rating System, according to the city's floodplain management page.
Source: City of Jacksonville: Floodplain Management.
22
The City of Jacksonville says most flooding in the city happens during the rainy season from June to November.
Source: City of Jacksonville: Floodplain Management.
23
By the Census Bureau's ACS 5-year 2020-2024 estimates, about 40% of homes in Jacksonville's residential ZIP codes were built before 1980.
Source: U.S. Census Bureau, ACS 5-year 2020-2024, calculated by Jax Water Damage Hub on November 12, 2026.
24
JEA says replacement costs for the water line from the meter to a Jacksonville home, and inside the home, are the customer's responsibility.
Source: JEA: Water Service Line Verification Project.
25
Under Florida law, notice of a new property insurance claim is due within 1 year of the date of loss, which for a hurricane is the landfall date.
Source: Fla. Stat. 627.70132.