Record envelope, standing records and threshold days for Jacksonville NAS (USW00093837), Florida, United States, with 82 years of record.
Key Facts for Jacksonville NAS
Jacksonville NAS (USW00093837) is a weather station in Florida, United States at 30.23 latitude and -81.67 longitude, 6 m (20 ft) above sea level.
The station reports from 1945 to 2026, 82 years of record.
1,464 records set at Jacksonville NAS still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Jacksonville NAS tied a daily record high maximum temperature of 37.8 C (100.0 F) on 29 July 2026.
About the Station
Location: Florida, United States, 30.23 latitude, -81.67 longitude.
Elevation: 6 m (20 ft).
Period of record: 1945 to 2026, 82 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Jacksonville NAS. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Jacksonville NAS, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-12.8 C (9.0 F)
28.3 C (82.9 F)
-2.2 C (28.0 F)
Feb
31.7 C (89.1 F)
-5.6 C (21.9 F)
30.6 C (87.1 F)
-5.0 C (23.0 F)
Mar
35.6 C (96.1 F)
-5.0 C (23.0 F)
32.2 C (90.0 F)
3.9 C (39.0 F)
Apr
35.0 C (95.0 F)
1.1 C (34.0 F)
33.3 C (91.9 F)
12.2 C (54.0 F)
May
38.3 C (100.9 F)
7.2 C (45.0 F)
32.8 C (91.0 F)
14.4 C (57.9 F)
Jun
40.0 C (104.0 F)
9.4 C (48.9 F)
36.7 C (98.1 F)
21.1 C (70.0 F)
Jul
39.4 C (102.9 F)
17.8 C (64.0 F)
37.8 C (100.0 F)
22.8 C (73.0 F)
Aug
39.4 C (102.9 F)
15.6 C (60.1 F)
37.2 C (99.0 F)
23.3 C (73.9 F)
Sep
36.7 C (98.1 F)
12.8 C (55.0 F)
34.4 C (93.9 F)
16.7 C (62.1 F)
Oct
35.6 C (96.1 F)
2.8 C (37.0 F)
32.8 C (91.0 F)
18.9 C (66.0 F)
Nov
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
30.6 C (87.1 F)
-10.0 C (14.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Jacksonville NAS still stand. 2015 holds the most, with 82.
Standing records at Jacksonville NAS by the year they were set
Year set
Standing records
1945
22
1946
8
1947
12
1948
14
1949
5
1950
25
1951
12
1952
12
1953
23
1954
18
1955
9
1956
13
1957
16
1958
20
1959
10
1960
10
1961
19
1962
23
1963
13
1964
13
1965
16
1966
13
1967
26
1968
20
1969
8
1970
26
1971
15
1972
32
1973
15
1974
39
1975
10
1976
15
1977
27
1978
20
1979
15
1980
25
1981
45
1982
12
1983
33
1984
31
1985
28
1986
24
1987
16
1988
25
1989
30
1990
26
1991
13
1992
13
1993
20
1994
9
1995
21
1996
11
1997
6
1998
49
2001
14
2002
10
2003
16
2004
5
2005
17
2006
4
2007
9
2008
14
2009
21
2010
18
2011
10
2012
12
2013
9
2014
19
2015
82
2016
20
2017
5
2018
19
2019
24
2020
29
2021
10
2022
7
2023
23
2024
19
2025
11
2026
6
All-Time Record Progression
7 new records
7 all-time records were set at Jacksonville NAS between 25 December 1983 and 24 August 2016. Each dot is a new record.
When Jacksonville NAS set new all-time records
Date
Kind
Detail
1983-12-25
Record low maximum temperature
Record low maximum temperature -0.6 C (30.9 F)
1985-01-21
Record low minimum temperature
Record low minimum temperature -12.8 C (9.0 F)
1989-12-23
Record daily snowfall
Record daily snowfall 2.3 cm (0.9 in)
1995-08-14
Record high maximum temperature
Record high maximum temperature 39.4 C (102.9 F)
1998-06-19
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
2015-07-14
Record high minimum temperature
Record high minimum temperature 28.3 C (82.9 F)
2016-08-24
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
Wettest Day of Each Month
May: 159.5 mm (6.3 in)
The wettest day on record for each calendar month at Jacksonville NAS. The most was 159.5 mm (6.3 in) on 20 May 1959.
Record daily precipitation for each month at Jacksonville NAS
Month
Record daily precipitation (mm)
Date
Jan
91.9 mm (3.6 in)
19 January 2025
Feb
88.6 mm (3.5 in)
3 February 1970
Mar
138.2 mm (5.4 in)
28 March 1970
Apr
132.1 mm (5.2 in)
8 April 1991
May
159.5 mm (6.3 in)
20 May 1959
Jun
122.9 mm (4.8 in)
26 June 2012
Jul
114.8 mm (4.5 in)
30 July 2017
Aug
148.6 mm (5.9 in)
30 August 1968
Sep
139.7 mm (5.5 in)
9 September 1964
Oct
136.4 mm (5.4 in)
7 October 2016
Nov
84.6 mm (3.3 in)
14 November 2001
Dec
96.5 mm (3.8 in)
17 December 2005
Period of Record Coverage
1945 to 2026
Complete yearUnder 90 percent of days
80 years of record at Jacksonville NAS, 1945 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 2005, 2006, 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 74 complete years at Jacksonville NAS, 1945 to 2025. Blue stripes are years cooler than the station's own mean of 21.6 C (70.8 F); red stripes are warmer. The coolest year was 1981, at 19.2 C (66.5 F), and the warmest was 2015, at 24.2 C (75.5 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Jacksonville NAS as warming stripes, 1945 to 2025
Year
Annual mean temperature
Difference from the station mean
1945
22.3 C
+0.70 C
1946
22.2 C
+0.63 C
1947
21.5 C
-0.07 C
1948
22.1 C
+0.52 C
1949
22.3 C
+0.70 C
1950
21.6 C
+0.07 C
1951
21.6 C
+0.06 C
1952
21.6 C
+0.02 C
1953
21.8 C
+0.25 C
1954
21.5 C
-0.04 C
1955
21.3 C
-0.22 C
1956
21.3 C
-0.29 C
1957
21.6 C
+0.06 C
1958
20.6 C
-0.95 C
1959
21.6 C
0.00 C
1960
20.9 C
-0.64 C
1961
21.1 C
-0.44 C
1962
21.2 C
-0.40 C
1963
20.8 C
-0.74 C
1964
20.9 C
-0.68 C
1965
20.6 C
-0.97 C
1966
20.8 C
-0.73 C
1967
20.9 C
-0.65 C
1968
20.2 C
-1.36 C
1969
20.5 C
-1.04 C
1970
20.9 C
-0.63 C
1971
21.7 C
+0.14 C
1972
21.3 C
-0.23 C
1973
21.3 C
-0.25 C
1974
21.5 C
-0.03 C
1975
21.2 C
-0.32 C
1976
20.1 C
-1.41 C
1977
20.5 C
-1.10 C
1978
20.6 C
-0.98 C
1979
20.4 C
-1.20 C
1980
20.2 C
-1.36 C
1981
19.2 C
-2.37 C
1982
21.0 C
-0.52 C
1983
19.7 C
-1.85 C
1984
20.4 C
-1.11 C
1985
21.3 C
-0.26 C
1986
21.8 C
+0.29 C
1987
20.9 C
-0.63 C
1988
20.7 C
-0.89 C
1989
21.1 C
-0.43 C
1990
22.8 C
+1.29 C
1991
22.2 C
+0.62 C
1992
21.4 C
-0.15 C
1993
21.5 C
-0.10 C
1994
22.3 C
+0.76 C
1995
22.2 C
+0.60 C
1996
20.8 C
-0.76 C
1997
21.6 C
+0.05 C
1998
23.4 C
+1.82 C
2002
21.8 C
+0.20 C
2003
21.4 C
-0.18 C
2004
21.6 C
+0.03 C
2008
21.3 C
-0.29 C
2009
22.3 C
+0.70 C
2010
21.0 C
-0.58 C
2011
22.4 C
+0.82 C
2012
22.9 C
+1.35 C
2013
21.9 C
+0.31 C
2014
22.4 C
+0.81 C
2015
24.2 C
+2.64 C
2016
23.3 C
+1.71 C
2018
22.5 C
+0.95 C
2019
23.4 C
+1.83 C
2020
23.2 C
+1.61 C
2021
22.0 C
+0.41 C
2022
22.5 C
+0.99 C
2023
23.4 C
+1.80 C
2024
23.2 C
+1.61 C
2025
22.3 C
+0.70 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1945 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Jacksonville NAS
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1945 to 2025
74
Rise
Mean daily maximum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1945 to 2025
74
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1945 to 2025
74
Rise
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1945 to 2026
Yearly extremes at Jacksonville NAS: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1998
37.2 C (99.0 F)
80
Coldest night (TNn)
-12.8 C (9.0 F)
1985
-3.2 C (26.2 F)
80
Wettest day (Rx1day)
159.5 mm (6.3 in)
1959
84.9 mm (3.3 in)
80
Wettest five days (Rx5day)
392.7 mm (15.5 in)
1968
131.0 mm (5.2 in)
80
Longest dry spell (CDD)
46 days
1970
24 days
80
Hottest day (TXx)
The hottest day of the year at Jacksonville NAS, 1945 to 2026. The record is 40.0 C (104.0 F) in 1998, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Jacksonville NAS by year
Year
Hottest day (TXx)
1945
37.8 C (100.0 F)
1946
36.1 C (97.0 F)
1947
36.1 C (97.0 F)
1948
35.6 C (96.1 F)
1949
37.2 C (99.0 F)
1950
38.9 C (102.0 F)
1951
36.7 C (98.1 F)
1952
38.9 C (102.0 F)
1953
37.2 C (99.0 F)
1954
37.8 C (100.0 F)
1955
35.6 C (96.1 F)
1956
37.2 C (99.0 F)
1957
36.7 C (98.1 F)
1958
36.7 C (98.1 F)
1959
37.8 C (100.0 F)
1960
36.7 C (98.1 F)
1961
36.7 C (98.1 F)
1962
36.7 C (98.1 F)
1963
37.2 C (99.0 F)
1964
36.1 C (97.0 F)
1965
33.3 C (91.9 F)
1966
36.7 C (98.1 F)
1967
35.6 C (96.1 F)
1968
35.6 C (96.1 F)
1969
36.1 C (97.0 F)
1970
37.2 C (99.0 F)
1971
36.1 C (97.0 F)
1972
36.7 C (98.1 F)
1973
35.6 C (96.1 F)
1974
35.0 C (95.0 F)
1975
35.6 C (96.1 F)
1976
37.2 C (99.0 F)
1977
38.9 C (102.0 F)
1978
37.2 C (99.0 F)
1979
37.8 C (100.0 F)
1980
37.8 C (100.0 F)
1981
38.3 C (100.9 F)
1982
35.6 C (96.1 F)
1983
37.2 C (99.0 F)
1984
36.1 C (97.0 F)
1985
38.9 C (102.0 F)
1986
38.9 C (102.0 F)
1987
38.9 C (102.0 F)
1988
38.3 C (100.9 F)
1989
36.7 C (98.1 F)
1990
38.3 C (100.9 F)
1991
36.7 C (98.1 F)
1992
37.2 C (99.0 F)
1993
37.8 C (100.0 F)
1994
36.7 C (98.1 F)
1995
39.4 C (102.9 F)
1996
35.6 C (96.1 F)
1997
37.2 C (99.0 F)
1998
40.0 C (104.0 F)
2001
36.1 C (97.0 F)
2002
37.2 C (99.0 F)
2003
36.1 C (97.0 F)
2004
36.1 C (97.0 F)
2005
36.1 C (97.0 F)
2006
37.2 C (99.0 F)
2007
39.4 C (102.9 F)
2008
36.1 C (97.0 F)
2009
37.8 C (100.0 F)
2010
37.8 C (100.0 F)
2011
38.3 C (100.9 F)
2012
36.7 C (98.1 F)
2013
35.6 C (96.1 F)
2014
38.9 C (102.0 F)
2015
38.9 C (102.0 F)
2016
38.3 C (100.9 F)
2017
36.1 C (97.0 F)
2018
36.1 C (97.0 F)
2019
38.3 C (100.9 F)
2020
37.2 C (99.0 F)
2021
36.1 C (97.0 F)
2022
39.4 C (102.9 F)
2023
38.9 C (102.0 F)
2024
38.9 C (102.0 F)
2025
37.2 C (99.0 F)
2026
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at Jacksonville NAS, 1945 to 2026. The record is -12.8 C (9.0 F) in 1985, marked on the chart; the median year is -3.2 C (26.2 F).
Coldest night (TNn) at Jacksonville NAS by year
Year
Coldest night (TNn)
1945
0.6 C (33.1 F)
1946
2.2 C (36.0 F)
1947
-3.3 C (26.1 F)
1948
-5.0 C (23.0 F)
1949
-0.6 C (30.9 F)
1950
-6.1 C (21.0 F)
1951
-3.9 C (25.0 F)
1952
-1.1 C (30.0 F)
1953
-1.7 C (28.9 F)
1954
-1.1 C (30.0 F)
1955
-2.2 C (28.0 F)
1956
-1.7 C (28.9 F)
1957
-3.9 C (25.0 F)
1958
-4.4 C (24.1 F)
1959
-3.9 C (25.0 F)
1960
-4.4 C (24.1 F)
1961
-3.9 C (25.0 F)
1962
-10.0 C (14.0 F)
1963
-3.9 C (25.0 F)
1964
-5.0 C (23.0 F)
1965
-3.9 C (25.0 F)
1966
-6.7 C (19.9 F)
1967
-3.9 C (25.0 F)
1968
-3.9 C (25.0 F)
1969
-1.1 C (30.0 F)
1970
-7.2 C (19.0 F)
1971
-3.9 C (25.0 F)
1972
0.0 C (32.0 F)
1973
-4.4 C (24.1 F)
1974
-2.8 C (27.0 F)
1975
-3.3 C (26.1 F)
1976
-3.3 C (26.1 F)
1977
-6.7 C (19.9 F)
1978
-3.9 C (25.0 F)
1979
-5.6 C (21.9 F)
1980
-5.0 C (23.0 F)
1981
-10.0 C (14.0 F)
1982
-8.9 C (16.0 F)
1983
-10.0 C (14.0 F)
1984
-2.2 C (28.0 F)
1985
-12.8 C (9.0 F)
1986
-6.7 C (19.9 F)
1987
-2.8 C (27.0 F)
1988
-3.9 C (25.0 F)
1989
-7.8 C (18.0 F)
1990
1.1 C (34.0 F)
1991
-2.2 C (28.0 F)
1992
-3.3 C (26.1 F)
1993
-1.1 C (30.0 F)
1994
-1.1 C (30.0 F)
1995
-3.9 C (25.0 F)
1996
-5.6 C (21.9 F)
1997
-1.7 C (28.9 F)
1998
2.2 C (36.0 F)
2001
-3.9 C (25.0 F)
2002
-1.7 C (28.9 F)
2003
-6.7 C (19.9 F)
2004
-1.1 C (30.0 F)
2005
1.1 C (34.0 F)
2006
2.8 C (37.0 F)
2007
-1.6 C (29.1 F)
2008
-3.2 C (26.2 F)
2009
-2.7 C (27.1 F)
2010
-4.3 C (24.3 F)
2011
-2.1 C (28.2 F)
2012
-1.0 C (30.2 F)
2013
-0.5 C (31.1 F)
2014
-3.8 C (25.2 F)
2015
0.0 C (32.0 F)
2016
-0.5 C (31.1 F)
2017
-0.5 C (31.1 F)
2018
-2.7 C (27.1 F)
2019
2.2 C (36.0 F)
2020
-0.5 C (31.1 F)
2021
2.2 C (36.0 F)
2022
-3.2 C (26.2 F)
2023
2.8 C (37.0 F)
2024
0.6 C (33.1 F)
2025
-0.5 C (31.1 F)
2026
-5.0 C (23.0 F)
Wettest day (Rx1day)
The wettest day of the year at Jacksonville NAS, 1945 to 2026. The record is 159.5 mm (6.3 in) in 1959, marked on the chart; the median year is 84.9 mm (3.3 in).
Wettest day (Rx1day) at Jacksonville NAS by year
Year
Wettest day (Rx1day)
1945
99.3 mm (3.9 in)
1946
90.9 mm (3.6 in)
1947
119.4 mm (4.7 in)
1948
87.9 mm (3.5 in)
1949
70.6 mm (2.8 in)
1950
88.1 mm (3.5 in)
1951
62.7 mm (2.5 in)
1952
82.8 mm (3.3 in)
1953
122.2 mm (4.8 in)
1954
53.1 mm (2.1 in)
1955
61.7 mm (2.4 in)
1956
131.6 mm (5.2 in)
1957
67.6 mm (2.7 in)
1958
46.2 mm (1.8 in)
1959
159.5 mm (6.3 in)
1960
70.4 mm (2.8 in)
1961
65.0 mm (2.6 in)
1962
46.2 mm (1.8 in)
1963
65.8 mm (2.6 in)
1964
139.7 mm (5.5 in)
1965
59.4 mm (2.3 in)
1966
87.6 mm (3.4 in)
1967
53.1 mm (2.1 in)
1968
148.6 mm (5.9 in)
1969
90.7 mm (3.6 in)
1970
138.2 mm (5.4 in)
1971
43.7 mm (1.7 in)
1972
60.2 mm (2.4 in)
1973
52.8 mm (2.1 in)
1974
73.4 mm (2.9 in)
1975
101.6 mm (4.0 in)
1976
61.7 mm (2.4 in)
1977
59.2 mm (2.3 in)
1978
84.3 mm (3.3 in)
1979
85.9 mm (3.4 in)
1980
85.1 mm (3.4 in)
1981
61.2 mm (2.4 in)
1982
83.6 mm (3.3 in)
1983
67.3 mm (2.6 in)
1984
131.3 mm (5.2 in)
1985
103.1 mm (4.1 in)
1986
78.5 mm (3.1 in)
1987
61.5 mm (2.4 in)
1988
67.8 mm (2.7 in)
1989
65.0 mm (2.6 in)
1990
43.4 mm (1.7 in)
1991
132.1 mm (5.2 in)
1992
125.5 mm (4.9 in)
1993
82.0 mm (3.2 in)
1994
105.2 mm (4.1 in)
1995
143.3 mm (5.6 in)
1996
136.1 mm (5.4 in)
1997
90.2 mm (3.6 in)
1998
95.3 mm (3.8 in)
2001
84.6 mm (3.3 in)
2002
87.1 mm (3.4 in)
2003
74.2 mm (2.9 in)
2004
92.7 mm (3.6 in)
2005
96.5 mm (3.8 in)
2006
76.2 mm (3.0 in)
2007
126.0 mm (5.0 in)
2008
122.4 mm (4.8 in)
2009
103.1 mm (4.1 in)
2010
62.0 mm (2.4 in)
2011
47.2 mm (1.9 in)
2012
122.9 mm (4.8 in)
2013
81.0 mm (3.2 in)
2014
60.5 mm (2.4 in)
2015
59.4 mm (2.3 in)
2016
136.4 mm (5.4 in)
2017
134.6 mm (5.3 in)
2018
45.7 mm (1.8 in)
2019
91.7 mm (3.6 in)
2020
85.6 mm (3.4 in)
2021
102.9 mm (4.1 in)
2022
67.1 mm (2.6 in)
2023
82.0 mm (3.2 in)
2024
101.3 mm (4.0 in)
2025
91.9 mm (3.6 in)
2026
97.3 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Jacksonville NAS, 1945 to 2026. The record is 392.7 mm (15.5 in) in 1968, marked on the chart; the median year is 131.0 mm (5.2 in).
Wettest five days (Rx5day) at Jacksonville NAS by year
Year
Wettest five days (Rx5day)
1945
116.1 mm (4.6 in)
1946
178.3 mm (7.0 in)
1947
198.2 mm (7.8 in)
1948
140.7 mm (5.5 in)
1949
152.8 mm (6.0 in)
1950
145.5 mm (5.7 in)
1951
116.1 mm (4.6 in)
1952
82.8 mm (3.3 in)
1953
191.8 mm (7.6 in)
1954
104.0 mm (4.1 in)
1955
95.5 mm (3.8 in)
1956
188.5 mm (7.4 in)
1957
120.9 mm (4.8 in)
1958
85.3 mm (3.4 in)
1959
226.6 mm (8.9 in)
1960
114.6 mm (4.5 in)
1961
133.3 mm (5.2 in)
1962
116.3 mm (4.6 in)
1963
108.7 mm (4.3 in)
1964
309.0 mm (12.2 in)
1965
102.8 mm (4.0 in)
1966
120.6 mm (4.7 in)
1967
125.6 mm (4.9 in)
1968
392.7 mm (15.5 in)
1969
166.7 mm (6.6 in)
1970
164.8 mm (6.5 in)
1971
84.6 mm (3.3 in)
1972
103.4 mm (4.1 in)
1973
74.2 mm (2.9 in)
1974
95.3 mm (3.8 in)
1975
167.9 mm (6.6 in)
1976
91.2 mm (3.6 in)
1977
106.4 mm (4.2 in)
1978
125.2 mm (4.9 in)
1979
179.8 mm (7.1 in)
1980
129.8 mm (5.1 in)
1981
88.2 mm (3.5 in)
1982
159.3 mm (6.3 in)
1983
132.2 mm (5.2 in)
1984
140.0 mm (5.5 in)
1985
155.4 mm (6.1 in)
1986
107.7 mm (4.2 in)
1987
105.5 mm (4.2 in)
1988
154.7 mm (6.1 in)
1989
150.9 mm (5.9 in)
1990
61.7 mm (2.4 in)
1991
178.0 mm (7.0 in)
1992
186.5 mm (7.3 in)
1993
102.7 mm (4.0 in)
1994
139.5 mm (5.5 in)
1995
190.6 mm (7.5 in)
1996
248.1 mm (9.8 in)
1997
169.7 mm (6.7 in)
1998
153.2 mm (6.0 in)
2001
169.9 mm (6.7 in)
2002
90.2 mm (3.6 in)
2003
117.2 mm (4.6 in)
2004
125.7 mm (4.9 in)
2005
113.0 mm (4.4 in)
2006
86.9 mm (3.4 in)
2007
150.4 mm (5.9 in)
2008
237.1 mm (9.3 in)
2009
282.8 mm (11.1 in)
2010
72.4 mm (2.9 in)
2011
78.3 mm (3.1 in)
2012
269.1 mm (10.6 in)
2013
195.7 mm (7.7 in)
2014
76.0 mm (3.0 in)
2015
77.7 mm (3.1 in)
2016
172.4 mm (6.8 in)
2017
231.6 mm (9.1 in)
2018
102.8 mm (4.0 in)
2019
93.3 mm (3.7 in)
2020
152.4 mm (6.0 in)
2021
122.2 mm (4.8 in)
2022
112.8 mm (4.4 in)
2023
113.6 mm (4.5 in)
2024
215.1 mm (8.5 in)
2025
139.2 mm (5.5 in)
2026
221.0 mm (8.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Jacksonville NAS, 1945 to 2026. The record is 46 days in 1970, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Jacksonville NAS by year
Year
Longest dry spell (CDD)
1945
42 days
1946
26 days
1947
19 days
1948
38 days
1949
27 days
1950
42 days
1951
18 days
1952
29 days
1953
17 days
1954
14 days
1955
38 days
1956
40 days
1957
20 days
1958
16 days
1959
20 days
1960
17 days
1961
26 days
1962
40 days
1963
22 days
1964
28 days
1965
15 days
1966
20 days
1967
30 days
1968
41 days
1969
22 days
1970
46 days
1971
25 days
1972
19 days
1973
39 days
1974
37 days
1975
22 days
1976
20 days
1977
17 days
1978
32 days
1979
26 days
1980
22 days
1981
22 days
1982
23 days
1983
17 days
1984
25 days
1985
17 days
1986
20 days
1987
21 days
1988
31 days
1989
29 days
1990
18 days
1991
23 days
1992
31 days
1993
24 days
1994
15 days
1995
17 days
1996
30 days
1997
18 days
1998
31 days
2001
26 days
2002
29 days
2003
21 days
2004
22 days
2005
18 days
2006
27 days
2007
24 days
2008
17 days
2009
26 days
2010
25 days
2011
18 days
2012
35 days
2013
19 days
2014
24 days
2015
25 days
2016
33 days
2017
46 days
2018
34 days
2019
23 days
2020
25 days
2021
31 days
2022
15 days
2023
21 days
2024
25 days
2025
36 days
2026
17 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
35 years with a frost
Across 35 years with a frost, the median last spring frost at Jacksonville NAS falls on 19 February and the median first autumn frost on 9 December, which leaves a median of 286 days between them.
Fitted over all years, the growing season changes by -2.5 days per decade at this station.
Frost dates and growing season at Jacksonville NAS
Measure
Median, all years
Earliest period
Recent period (1960 to 2022)
Recent against earliest
Fitted trend
Last spring frost
19 February
n/a
26 February
n/a
+3.2 days per decade
First autumn frost
9 December
n/a
10 December
n/a
+0.7 days per decade
Growing days
286 days
n/a
284 days
n/a
-2.5 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
77 years, 1945 to 2025
A day with at least 83.4 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 178.0 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Jacksonville NAS: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
83.4 mm (3.3 in)
5 years
110.6 mm (4.4 in)
10 years
127.9 mm (5.0 in)
25 years
148.8 mm (5.9 in)
50 years
163.7 mm (6.4 in)
100 years
178.0 mm (7.0 in)
Longer than the 77 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 77 years of values from 1945 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 159.5 mm (6.3 in) in 1959; 148.6 mm (5.9 in) in 1968; 143.3 mm (5.6 in) in 1995.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Jacksonville NAS, at 1964 and 1990. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1990 ran 0.6 C (1.1 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Jacksonville NAS, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1964
-0.4
-0.7
likely
5
1990
+0.6
+1.1
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2010 to 2025 against 1961 to 1990
Over 2010 to 2025, Jacksonville NAS had a mean temperature of 22.7 C (72.8 F) and 1,135.3 mm (44.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Baise (China, 13,931 km away), Tampa Intl AP (United States, 266 km away) and Longzhou (China, 14,097 km away).
Climate twins of Jacksonville NAS: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Jacksonville NAS standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jacksonville NAS threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.