30.495°N, 81.694°W · station JAXthr · 156 years of record
77°F
HOTTEST OCT 21 SINCE 2025
forecast high · Oct 21
7-Day Forecast
NWS NDFD forecast high temperature for Jacksonville.
This Day in History
Every year's high on each of the next 7 forecast dates at Jacksonville — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#129 / 155
warmest Oct 17 in 155 yrs of record
Warmest Oct 17 ever
94°F
set in 2018
Coolest Oct 17 ever
65°F
set in 1964
Forecast high 74°F — 129th warmest Oct 17 of 155 years · record 94°F (2018) · warmest since 2025.
Ranks
#152 / 155
warmest Oct 18 in 155 yrs of record
Warmest Oct 18 ever
89°F
set in 2007
Coolest Oct 18 ever
62°F
set in 1940
Forecast high 68°F — 152nd warmest Oct 18 of 155 years · record 89°F (2007) · warmest since 2025.
Ranks
#142 / 155
warmest Oct 19 in 155 yrs of record
Warmest Oct 19 ever
91°F
set in 1980
Coolest Oct 19 ever
64°F
set in 1878
Forecast high 70°F — 142nd warmest Oct 19 of 155 years · record 91°F (1980) · warmest since 2025.
Ranks
#121 / 155
warmest Oct 20 in 155 yrs of record
Warmest Oct 20 ever
91°F
set in 1980
Coolest Oct 20 ever
58°F
set in 1989
Forecast high 75°F — 121st warmest Oct 20 of 155 years · record 91°F (1980) · warmest since 2025.
Ranks
#107 / 155
warmest Oct 21 in 155 yrs of record
Warmest Oct 21 ever
89°F
set in 1993
Coolest Oct 21 ever
60°F
set in 1913
Forecast high 77°F — 107th warmest Oct 21 of 155 years · record 89°F (1993) · warmest since 2025.
Ranks
#103 / 155
warmest Oct 22 in 155 yrs of record
Warmest Oct 22 ever
92°F
set in 2006
Coolest Oct 22 ever
62°F
set in 1952
Forecast high 77°F — 103rd warmest Oct 22 of 155 years · record 92°F (2006) · warmest since 2025.
Ranks
#94 / 155
warmest Oct 23 in 155 yrs of record
Warmest Oct 23 ever
88°F
set in 1981
Coolest Oct 23 ever
58°F
set in 1937
Forecast high 77°F — 94th warmest Oct 23 of 155 years · record 88°F (1981) · warmest since 2025.
The hottest and coldest ever recorded at Jacksonville in each calendar month, and for the whole 1871–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
87°FJan 30, 2023
7°FJan 21, 1985
Feb
89°FFeb 13, 2020
10°FFeb 13, 1899
Mar
94°FMar 28, 2020
23°FMar 3, 1980
Apr
95°FApr 21, 1968
31°FApr 8, 2007
May
100°FMay 13, 1967
45°FMay 4, 1971
Jun
103°FJun 19, 1998
47°FJun 1, 1984
Jul
104°FJul 28, 1872
61°FJul 8, 1972
Aug
102°FAug 1, 1999
63°FAug 29, 1984
Sep
99°FSep 3, 1912
48°FSep 19, 1981
Oct
95°FOct 8, 1911
33°FOct 29, 2008
Nov
89°FNov 1, 2015
21°FNov 25, 1970
Dec
85°FDec 28, 2015
11°FDec 25, 1983
All-time
104°FJul 28, 1872
7°FJan 21, 1985
2026 Records So Far
Records set or tied at Jacksonville so far this year — through Oct 15.
Record Highs in 2026
6 broke
plus 4 tied — daily record highs set this year
Monthly high records this year: Feb (89°F), Apr (95°F)
Record Lows in 2026
2 broke
plus 4 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
86°F
record high minimum — the night it never cooled · Jul 26, 1872
Coldest high ever
27°F
record low maximum — the day it never warmed · Feb 13, 1899
Month
Warmest low
Coldest high
Jan
70°FJan 7, 1998
29°FJan 12, 1886
Feb
71°FFeb 28, 2023
27°FFeb 13, 1899
Mar
72°FMar 26, 1884
43°FMar 28, 1955
Apr
74°FApr 9, 1872
53°FApr 3, 1915
May
80°FMay 22, 1872
58°FMay 8, 1928
Jun
84°FJun 9, 1872
60°FJun 11, 1913
Jul
86°FJul 26, 1872
75°FJul 1, 1919
Aug
82°FAug 1, 1873
74°FAug 30, 1934
Sep
79°FSep 17, 1873
66°FSep 22, 1897
Oct
79°FOct 10, 2018
54°FOct 29, 1873
Nov
76°FNov 11, 2020
39°FNov 24, 1970
Dec
70°FDec 2, 1968
30°FDec 25, 1983
All-time
86°FJul 26, 1872
27°FFeb 13, 1899
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
50 days
record run, ended Aug 26 2010
So far in 2026
109 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Jacksonville's own 1991–2020 record. Today's normal high: 80°F · forecast is -3° vs normal.
Jacksonville's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
2026 So Far
Every day this year against Jacksonville's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's high at Jacksonville, coloured by temperature — 156 years of record, so heat waves read as warm streaks and cold snaps as blue.
Days Above the Mark
How many days a year hit a given high at Jacksonville — counted through Oct 21 each year, so you can see whether 2026 is running hot. Pick a threshold:
109 days ≥90°F so far in 2026 — the 4th most in 156 years. Normal for this point: 69. Record: 114 in 2011.
Share Card
A ready-to-share summary of Jacksonville's outlook — post it, or link this page.