Jacksonville climate — normals and trends

Q: What is the climate of Jacksonville?

Jacksonville has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.9 °C and it receives 936 mm of precipitation per year.

Q: What is the hottest day ever recorded in Jacksonville?

The hottest day measured in Jacksonville between 1940 and 2025 was 14 July 1954, reaching 40.7 °C.

Q: What is the coldest day in Jacksonville?

The coldest day measured in Jacksonville between 1940 and 2025 was 20 January 1985, at -29.7 °C.

Q: Does it snow in Jacksonville?

Yes. Jacksonville gets on average 47.9 cm of snow per year and has around 102 frost days.

Q: Has the climate of Jacksonville warmed?

Yes: Jacksonville warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Jacksonville?

The wettest day measured in Jacksonville between 1940 and 2025 was 17 August 1997, with 97 mm of rain in 24 hours.

Q: What was the windiest day in Jacksonville?

The windiest day measured in Jacksonville between 1940 and 2025 was 15 December 1971, with winds reaching 54.0 km/h.

Q: What is the warmest month in Jacksonville?

The warmest month in Jacksonville is July (24.9 °C on average); the coldest is January (-2.9 °C).

Q: How much does it rain in Jacksonville?

Jacksonville receives on average 936 mm of precipitation per year, spread over about 108 rainy days.

Q: Is it sunny in Jacksonville?

Jacksonville gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Jacksonville (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.9 °C and it receives 936 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (24.9 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in May.

Jacksonville averages 102 frost days, 46 hot days (≥ 30 °C) and 108 rainy days per year.

Jacksonville has warmed by +1.7 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The number of frost days there went from about 113 to 91 per year over the period.

The hottest day of the period reached 40.7 °C (on 14 July 1954) and the coldest -29.7 °C (on 20 January 1985).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

JacksonvilleIllinois

coords: 39.73°, -90.23°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthJanuary

Mean daily temperature

11.9°C

Average daily high

16.9°C

Average daily low

7.1°C

Annual rainfall

936mm

Sunshine / day

9.0h

Mean relative humidity

69%

Average peak wind

18.6km/h

Seasonal range

27.8°C

Frost days (< 0 °C)

102 d/yr

Hot days (≥ 30 °C)

46 d/yr

Rainy days (≥ 1 mm)

108 d/yr

Annual snowfall

47.9 cm

Average feels-like high

15.4 °C

Average feels-like low

4.6 °C

Average peak gust

37.1 km/h

Tropical nights (≥ 20 °C)

47 d/yr

Solar radiation

15.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.29 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

40.7 °C

14 July 1954

Coldest day

-29.7 °C

20 January 1985

Wettest day

97 mm

17 August 1997

Windiest day

54.0 km/h

15 December 1971

Strongest gust

105.5 km/h

10 November 1998

Hottest feels-like

44.6 °C

13 July 1995

Coldest feels-like

-36.9 °C

20 January 1985

Snowiest day

26.3 cm

1 February 2011

Sunniest day

14.1 h

25 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.4 °C14 September 2025	-20.5 °C21 January 2025	12.8 °C	975 mm	52	93
2024	36.2 °C27 August 2024	-23.9 °C14 January 2024	13.7 °C	1,090 mm	55	68
2023	37.5 °C25 August 2023	-13.5 °C31 January 2023	13.8 °C	843 mm	53	72
2022	36.4 °C5 July 2022	-22.3 °C22 December 2022	12.1 °C	1,112 mm	43	102
2021	34.8 °C18 June 2021	-22.0 °C17 February 2021	13.0 °C	1,199 mm	50	88
2020	34.0 °C11 July 2020	-18.1 °C14 February 2020	12.6 °C	1,049 mm	41	89
2019	33.9 °C19 July 2019	-25.9 °C30 January 2019	12.1 °C	1,114 mm	49	107
2018	34.9 °C28 May 2018	-24.4 °C1 January 2018	12.5 °C	1,082 mm	71	115
2017	35.4 °C21 July 2017	-19.1 °C27 December 2017	13.6 °C	1,081 mm	51	80
2016	36.5 °C22 June 2016	-17.8 °C19 December 2016	13.8 °C	815 mm	59	80
2015	35.9 °C6 September 2015	-20.8 °C5 February 2015	13.2 °C	1,114 mm	47	82
2014	34.2 °C25 August 2014	-25.0 °C7 February 2014	10.8 °C	956 mm	35	112
2013	36.7 °C9 September 2013	-16.2 °C24 December 2013	11.6 °C	931 mm	47	121
2012	40.4 °C7 July 2012	-11.8 °C20 January 2012	14.5 °C	659 mm	83	85
2011	36.9 °C1 September 2011	-22.3 °C3 February 2011	12.7 °C	1,103 mm	56	89
2010	36.0 °C3 August 2010	-25.6 °C10 January 2010	12.5 °C	1,053 mm	55	102
2009	34.3 °C23 June 2009	-21.7 °C15 January 2009	11.9 °C	1,171 mm	19	96
2008	33.8 °C20 July 2008	-17.9 °C24 January 2008	11.4 °C	1,266 mm	22	113
2007	38.1 °C12 August 2007	-20.6 °C16 February 2007	13.3 °C	742 mm	73	107
2006	36.8 °C30 July 2006	-20.9 °C8 December 2006	13.2 °C	900 mm	56	81
2005	39.1 °C24 July 2005	-16.3 °C7 December 2005	13.0 °C	741 mm	70	87
2004	36.2 °C13 July 2004	-23.3 °C30 January 2004	12.2 °C	864 mm	24	86
2003	36.7 °C26 August 2003	-19.0 °C23 January 2003	11.8 °C	824 mm	30	104
2002	35.6 °C21 July 2002	-21.1 °C4 March 2002	12.5 °C	805 mm	55	97
2001	34.3 °C22 August 2001	-18.4 °C2 February 2001	12.5 °C	993 mm	37	93
2000	34.9 °C1 September 2000	-24.4 °C25 December 2000	12.0 °C	794 mm	38	110
1999	37.7 °C29 July 1999	-27.4 °C5 January 1999	12.6 °C	826 mm	42	91
1998	34.8 °C21 July 1998	-19.8 °C12 March 1998	13.2 °C	1,224 mm	36	74
1997	37.2 °C26 July 1997	-23.0 °C28 January 1997	11.3 °C	966 mm	35	103
1996	34.7 °C18 July 1996	-27.9 °C3 February 1996	11.0 °C	879 mm	30	117
1995	36.3 °C13 July 1995	-17.9 °C9 December 1995	11.9 °C	910 mm	51	99
1994	33.9 °C5 July 1994	-25.9 °C19 January 1994	12.1 °C	905 mm	44	88
1993	35.0 °C27 August 1993	-21.0 °C18 February 1993	11.1 °C	1,420 mm	38	100
1992	35.3 °C2 July 1992	-23.0 °C16 January 1992	12.0 °C	964 mm	21	88
1991	37.8 °C2 August 1991	-19.7 °C8 November 1991	12.7 °C	1,046 mm	61	99
1990	37.0 °C6 September 1990	-19.4 °C24 December 1990	12.7 °C	1,124 mm	40	83
1989	35.9 °C10 July 1989	-28.5 °C22 December 1989	11.1 °C	726 mm	34	108
1988	39.0 °C25 June 1988	-22.3 °C12 February 1988	12.1 °C	704 mm	77	106
1987	38.6 °C2 August 1987	-25.2 °C24 January 1987	13.0 °C	914 mm	70	91
1986	36.0 °C25 July 1986	-20.9 °C12 February 1986	12.5 °C	1,040 mm	48	95
1985	33.5 °C13 July 1985	-29.7 °C20 January 1985	11.0 °C	1,247 mm	24	107
1984	36.9 °C1 September 1984	-28.0 °C21 January 1984	11.6 °C	1,232 mm	40	98
1983	40.3 °C23 July 1983	-27.8 °C19 December 1983	11.8 °C	951 mm	73	99
1982	35.2 °C3 August 1982	-29.1 °C17 January 1982	11.1 °C	1,165 mm	23	107
1981	34.1 °C13 July 1981	-24.8 °C20 December 1981	11.8 °C	1,213 mm	17	93
1980	38.6 °C15 July 1980	-23.9 °C2 March 1980	11.5 °C	911 mm	56	110
1979	35.7 °C7 August 1979	-28.2 °C15 January 1979	10.8 °C	672 mm	47	117
1978	33.8 °C1 July 1978	-20.9 °C5 March 1978	10.5 °C	894 mm	50	106
1977	35.5 °C7 July 1977	-27.4 °C17 January 1977	11.6 °C	1,088 mm	37	95
1976	36.6 °C23 July 1976	-21.4 °C8 January 1976	11.2 °C	633 mm	48	122
1975	35.4 °C12 August 1975	-20.8 °C20 January 1975	11.8 °C	910 mm	50	111
1974	35.8 °C14 July 1974	-25.6 °C12 January 1974	11.5 °C	1,063 mm	29	92
1973	34.3 °C26 August 1973	-24.4 °C21 December 1973	12.3 °C	1,147 mm	35	84
1972	34.3 °C18 August 1972	-24.0 °C29 January 1972	10.9 °C	928 mm	51	119
1971	36.5 °C19 June 1971	-19.0 °C9 February 1971	12.4 °C	617 mm	62	105
1970	36.4 °C31 July 1970	-26.7 °C21 January 1970	11.5 °C	868 mm	38	106
1969	35.0 °C4 July 1969	-21.7 °C4 January 1969	11.1 °C	925 mm	43	114
1968	34.8 °C23 August 1968	-23.3 °C7 January 1968	11.3 °C	934 mm	40	109
1967	34.0 °C23 July 1967	-19.7 °C18 January 1967	11.3 °C	834 mm	24	100
1966	39.4 °C13 July 1966	-24.2 °C29 January 1966	11.1 °C	776 mm	41	112
1965	35.1 °C23 July 1965	-25.1 °C31 January 1965	11.9 °C	943 mm	28	100
1964	37.3 °C2 August 1964	-19.2 °C14 January 1964	12.2 °C	711 mm	63	112
1963	36.2 °C2 August 1963	-29.5 °C28 January 1963	11.2 °C	666 mm	50	106
1962	36.8 °C20 August 1962	-24.8 °C10 January 1962	11.2 °C	735 mm	51	107
1961	33.9 °C28 August 1961	-19.9 °C28 December 1961	11.2 °C	858 mm	44	99
1960	35.2 °C6 September 1960	-25.8 °C23 December 1960	10.7 °C	884 mm	30	123
1959	34.3 °C27 June 1959	-26.0 °C5 January 1959	12.0 °C	911 mm	63	105
1958	34.5 °C30 August 1958	-24.0 °C17 February 1958	11.0 °C	784 mm	33	107
1957	36.4 °C15 August 1957	-24.6 °C14 January 1957	11.9 °C	1,113 mm	42	100
1956	38.1 °C27 July 1956	-14.9 °C13 December 1956	12.6 °C	702 mm	66	111
1955	36.1 °C9 September 1955	-23.4 °C11 February 1955	12.3 °C	848 mm	56	113
1954	40.7 °C14 July 1954	-17.7 °C5 March 1954	13.0 °C	711 mm	65	97
1953	38.6 °C20 June 1953	-16.6 °C23 December 1953	13.0 °C	675 mm	75	92
1952	37.2 °C29 June 1952	-16.7 °C29 January 1952	12.2 °C	803 mm	67	104
1951	34.7 °C30 August 1951	-27.3 °C2 February 1951	10.7 °C	1,057 mm	30	111
1950	34.5 °C25 June 1950	-20.9 °C26 February 1950	10.8 °C	921 mm	17	116
1949	35.0 °C1 July 1949	-23.7 °C20 January 1949	12.2 °C	999 mm	47	102
1948	34.3 °C23 August 1948	-22.6 °C12 March 1948	11.6 °C	941 mm	42	100
1947	37.2 °C6 August 1947	-19.9 °C4 January 1947	11.4 °C	916 mm	53	119
1946	34.7 °C18 July 1946	-23.0 °C15 February 1946	12.7 °C	1,135 mm	35	86
1945	35.7 °C30 August 1945	-20.7 °C2 January 1945	11.1 °C	1,247 mm	29	100
1944	37.3 °C11 August 1944	-20.2 °C13 February 1944	11.5 °C	836 mm	45	113
1943	38.3 °C26 August 1943	-18.9 °C19 January 1943	10.7 °C	673 mm	49	127
1942	35.4 °C1 August 1942	-24.5 °C10 January 1942	10.7 °C	912 mm	33	120
1941	36.1 °C11 August 1941	-20.0 °C19 February 1941	11.3 °C	861 mm	41	120
1940	36.2 °C3 August 1940	-26.4 °C19 January 1940	9.7 °C	708 mm	33	135

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

18.0 °C

+1.1 °C

Hot days (≥ 30 °C)

52 d/yr

Frost days (< 0 °C)

93 d/yr

-9

Annual rainfall

975 mm

+39 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	0.1 °C	-1.3 °C	33 mm	-19 mm
Feb	4.0 °C	-0.1 °C	18 mm	-38 mm
Mar	16.0 °C	+5.7 °C	84 mm	-3 mm
Apr	18.7 °C	+1.3 °C	123 mm	+18 mm
May	22.9 °C	0.0 °C	89 mm	-17 mm
Jun	28.5 °C	+0.6 °C	161 mm	+65 mm
Jul	30.5 °C	+0.7 °C	219 mm	+138 mm
Aug	28.3 °C	-0.8 °C	34 mm	-38 mm
Sep	28.1 °C	+2.5 °C	44 mm	-33 mm
Oct	21.5 °C	+2.4 °C	76 mm	+3 mm
Nov	11.8 °C	+1.1 °C	59 mm	-15 mm
Dec	4.6 °C	+0.6 °C	36 mm	-23 mm

The year's extremes

Hottest day

35.4 °C

14 Sep 2025

Coldest day

-20.5 °C

21 Jan 2025

Wettest day

63.9 mm

4 Jun 2025

Windiest day

40.3 km/h

26 Nov 2025

Strongest gust

82.1 km/h

2 Apr 2025

Hottest feels-like

41.1 °C

16 Aug 2025

Coldest feels-like

-26.8 °C

21 Jan 2025

Snowiest day

14.7 cm

29 Nov 2025

Sunniest day

14.1 h

19 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Jacksonville?

Jacksonville has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.9 °C and it receives 936 mm of precipitation per year.

What is the hottest day ever recorded in Jacksonville?

The hottest day measured in Jacksonville between 1940 and 2025 was 14 July 1954, reaching 40.7 °C.

What is the coldest day in Jacksonville?

The coldest day measured in Jacksonville between 1940 and 2025 was 20 January 1985, at -29.7 °C.

Does it snow in Jacksonville?

Yes. Jacksonville gets on average 47.9 cm of snow per year and has around 102 frost days.

Has the climate of Jacksonville warmed?

Yes: Jacksonville warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Jacksonville?

The wettest day measured in Jacksonville between 1940 and 2025 was 17 August 1997, with 97 mm of rain in 24 hours.

What was the windiest day in Jacksonville?

The windiest day measured in Jacksonville between 1940 and 2025 was 15 December 1971, with winds reaching 54.0 km/h.

What is the warmest month in Jacksonville?

The warmest month in Jacksonville is July (24.9 °C on average); the coldest is January (-2.9 °C).

How much does it rain in Jacksonville?

Jacksonville receives on average 936 mm of precipitation per year, spread over about 108 rainy days.

Is it sunny in Jacksonville?

Jacksonville gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

What is the biggest single-day snowfall in Jacksonville?

The heaviest 24-hour snowfall measured in Jacksonville between 1940 and 2025 was 1 February 2011, with 26.3 cm.

Are there tropical nights in Jacksonville?

Yes: Jacksonville has on average 47 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Jacksonville?

In Jacksonville, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 13 July 1995, and the lowest was -36.9 °C on 20 January 1985.

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