Iona climate — normals and trends

Q: What is the climate of Iona?

Iona has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.4 °C and it receives 880 mm of precipitation per year.

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

The hottest day measured in Iona between 1940 and 2025 was 19 August 2007, reaching 34.9 °C.

Q: What is the coldest day in Iona?

The coldest day measured in Iona between 1940 and 2025 was 13 December 1962, at -0.7 °C.

Q: Does it snow in Iona?

Almost never: Iona sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Iona warmed?

Yes: Iona warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Iona?

The wettest day measured in Iona between 1940 and 2025 was 28 September 2022, with 168 mm of rain in 24 hours.

Q: What was the windiest day in Iona?

The windiest day measured in Iona between 1940 and 2025 was 19 October 1944, with winds reaching 109.9 km/h.

Q: What is the warmest month in Iona?

The warmest month in Iona is August (27.6 °C on average); the coldest is January (18.0 °C).

Q: How much does it rain in Iona?

Iona receives on average 880 mm of precipitation per year, spread over about 129 rainy days.

Q: Is it sunny in Iona?

Iona gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Iona (United States) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 23.4 °C and it receives 880 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 August (27.6 °C on average) and the coldest is January (18.0 °C). Rainfall peaks in September.

Iona averages 0 frost days, 64 hot days (≥ 30 °C) and 129 rainy days per year.

Iona has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.9 °C (on 19 August 2007) and the coldest -0.7 °C (on 13 December 1962).

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

IonaFlorida

coords: 26.52°, -81.96°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAugustColdest monthJanuaryWettest monthSeptemberDriest monthNovember

Mean daily temperature

23.4°C

Average daily high

26.3°C

Average daily low

20.9°C

Annual rainfall

880mm

Sunshine / day

10.7h

Mean relative humidity

77%

Average peak wind

20.3km/h

Seasonal range

9.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

64 d/yr

Rainy days (≥ 1 mm)

129 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.0 °C

Average feels-like low

22.0 °C

Average peak gust

32.9 km/h

Tropical nights (≥ 20 °C)

230 d/yr

Solar radiation

18.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.28 · 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

34.9 °C

19 August 2007

Coldest day

-0.7 °C

13 December 1962

Wettest day

168 mm

28 September 2022

Windiest day

109.9 km/h

19 October 1944

Strongest gust

171.4 km/h

19 October 1944

Hottest feels-like

40.5 °C

5 July 2023

Coldest feels-like

-7.7 °C

13 December 1962

Snowiest day

0.2 cm

24 December 1989

Sunniest day

13.0 h

3 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	33.6 °C27 July 2025	6.2 °C25 January 2025	24.0 °C	876 mm	78	0
2024	32.7 °C31 May 2024	8.1 °C21 January 2024	24.2 °C	1,457 mm	108	0
2023	33.4 °C22 August 2023	7.7 °C15 January 2023	24.7 °C	908 mm	97	0
2022	32.8 °C20 August 2022	5.8 °C30 January 2022	24.2 °C	1,148 mm	82	0
2021	32.0 °C25 August 2021	8.4 °C4 February 2021	24.1 °C	1,090 mm	79	0
2020	33.4 °C4 September 2020	5.4 °C22 January 2020	24.5 °C	1,119 mm	98	0
2019	33.4 °C26 June 2019	8.1 °C21 January 2019	24.5 °C	998 mm	106	0
2018	31.8 °C17 September 2018	3.5 °C18 January 2018	23.9 °C	1,038 mm	92	0
2017	32.9 °C22 August 2017	7.0 °C8 January 2017	24.2 °C	1,322 mm	83	0
2016	32.7 °C11 July 2016	8.7 °C25 January 2016	23.9 °C	1,064 mm	84	0
2015	32.7 °C11 July 2015	4.9 °C20 February 2015	24.6 °C	788 mm	87	0
2014	33.8 °C26 August 2014	7.3 °C7 January 2014	23.5 °C	788 mm	79	0
2013	33.0 °C11 August 2013	7.6 °C28 November 2013	23.8 °C	850 mm	49	0
2012	33.4 °C24 August 2012	5.0 °C4 January 2012	23.9 °C	825 mm	69	0
2011	32.8 °C29 July 2011	4.4 °C13 January 2011	23.9 °C	722 mm	94	0
2010	34.1 °C21 July 2010	2.3 °C11 January 2010	22.6 °C	751 mm	113	0
2009	33.2 °C22 July 2009	3.3 °C5 February 2009	23.6 °C	728 mm	88	0
2008	32.8 °C6 June 2008	2.5 °C3 January 2008	23.6 °C	764 mm	80	0
2007	34.9 °C19 August 2007	7.2 °C17 February 2007	24.1 °C	590 mm	89	0
2006	32.5 °C1 July 2006	5.8 °C14 February 2006	23.7 °C	642 mm	79	0
2005	34.4 °C19 September 2005	4.9 °C24 January 2005	23.4 °C	945 mm	87	0
2004	32.8 °C3 September 2004	5.9 °C15 December 2004	23.4 °C	720 mm	62	0
2003	32.1 °C13 August 2003	1.6 °C24 January 2003	23.3 °C	828 mm	61	0
2002	31.7 °C28 July 2002	5.6 °C4 January 2002	23.5 °C	811 mm	61	0
2001	31.7 °C14 June 2001	4.2 °C10 January 2001	23.2 °C	1,073 mm	49	0
2000	32.6 °C16 August 2000	5.7 °C27 January 2000	23.4 °C	656 mm	64	0
1999	32.2 °C16 August 1999	4.3 °C6 January 1999	23.3 °C	845 mm	60	0
1998	34.3 °C4 July 1998	7.7 °C13 March 1998	23.8 °C	875 mm	99	0
1997	32.9 °C8 July 1997	4.2 °C19 January 1997	23.7 °C	1,018 mm	46	0
1996	33.5 °C28 July 1996	0.7 °C5 February 1996	23.0 °C	883 mm	49	0
1995	32.2 °C6 July 1995	2.8 °C9 February 1995	23.3 °C	1,447 mm	61	0
1994	32.3 °C26 June 1994	8.0 °C3 February 1994	23.7 °C	1,018 mm	39	0
1993	33.0 °C8 August 1993	7.2 °C15 March 1993	23.3 °C	1,062 mm	71	0
1992	31.7 °C8 July 1992	7.3 °C17 January 1992	23.2 °C	1,032 mm	49	0
1991	31.9 °C27 August 1991	6.9 °C16 February 1991	23.9 °C	940 mm	62	0
1990	32.4 °C29 June 1990	9.0 °C13 January 1990	24.3 °C	673 mm	88	0
1989	32.5 °C29 May 1989	0.3 °C24 December 1989	23.6 °C	681 mm	85	0
1988	32.9 °C5 July 1988	6.1 °C28 January 1988	23.1 °C	884 mm	75	0
1987	32.6 °C28 August 1987	6.5 °C24 January 1987	23.0 °C	1,022 mm	70	0
1986	31.4 °C17 July 1986	4.9 °C28 January 1986	23.5 °C	810 mm	63	0
1985	32.5 °C5 June 1985	2.4 °C22 January 1985	23.2 °C	963 mm	41	0
1984	31.5 °C2 August 1984	6.3 °C1 January 1984	22.7 °C	861 mm	21	0
1983	31.8 °C17 July 1983	0.5 °C26 December 1983	22.8 °C	1,336 mm	52	0
1982	31.9 °C30 July 1982	2.3 °C12 January 1982	23.7 °C	1,109 mm	51	0
1981	33.0 °C12 June 1981	1.2 °C13 January 1981	22.8 °C	571 mm	87	0
1980	33.8 °C7 August 1980	3.3 °C3 March 1980	23.1 °C	749 mm	88	0
1979	33.0 °C21 June 1979	3.7 °C3 January 1979	23.1 °C	925 mm	76	0
1978	31.9 °C16 June 1978	4.9 °C16 January 1978	22.9 °C	984 mm	64	0
1977	31.4 °C4 August 1977	3.4 °C20 January 1977	22.5 °C	824 mm	38	0
1976	31.9 °C12 August 1976	4.8 °C19 January 1976	22.6 °C	831 mm	27	0
1975	32.4 °C13 June 1975	7.0 °C22 December 1975	23.8 °C	653 mm	61	0
1974	31.4 °C8 June 1974	6.1 °C27 February 1974	23.6 °C	900 mm	34	0
1973	32.1 °C12 August 1973	4.7 °C11 February 1973	23.2 °C	845 mm	44	0
1972	32.3 °C27 September 1972	6.6 °C17 December 1972	23.8 °C	855 mm	63	0
1971	31.5 °C9 August 1971	3.1 °C20 January 1971	23.3 °C	973 mm	47	0
1970	33.8 °C15 August 1970	2.9 °C10 January 1970	22.9 °C	777 mm	86	0
1969	32.3 °C16 July 1969	8.4 °C16 November 1969	22.7 °C	885 mm	60	0
1968	32.3 °C25 July 1968	4.3 °C16 December 1968	22.4 °C	868 mm	51	0
1967	31.6 °C20 July 1967	2.5 °C26 February 1967	23.2 °C	685 mm	57	0
1966	32.5 °C30 August 1966	2.2 °C31 January 1966	22.7 °C	793 mm	47	0
1965	31.6 °C22 August 1965	4.5 °C18 January 1965	23.3 °C	695 mm	59	0
1964	33.8 °C14 July 1964	3.0 °C15 January 1964	23.5 °C	622 mm	90	0
1963	32.9 °C19 July 1963	7.4 °C19 December 1963	23.0 °C	719 mm	80	0
1962	31.8 °C23 July 1962	-0.7 °C13 December 1962	22.8 °C	936 mm	48	1
1961	32.8 °C24 July 1961	5.3 °C22 January 1961	23.3 °C	630 mm	75	0
1960	33.1 °C28 August 1960	5.5 °C22 January 1960	22.7 °C	1,090 mm	53	0
1959	31.1 °C19 August 1959	4.4 °C11 January 1959	23.2 °C	1,259 mm	41	0
1958	32.7 °C2 September 1958	4.1 °C14 February 1958	22.7 °C	869 mm	82	0
1957	32.6 °C15 August 1957	3.2 °C12 December 1957	23.4 °C	1,069 mm	41	0
1956	33.0 °C22 July 1956	8.3 °C23 November 1956	23.2 °C	554 mm	64	0
1955	31.5 °C23 August 1955	3.0 °C13 February 1955	23.1 °C	645 mm	55	0
1954	31.8 °C23 August 1954	7.6 °C13 January 1954	22.8 °C	879 mm	51	0
1953	32.3 °C28 May 1953	6.8 °C18 December 1953	23.2 °C	1,131 mm	42	0
1952	32.1 °C19 July 1952	7.1 °C16 December 1952	23.1 °C	824 mm	75	0
1951	32.0 °C13 August 1951	4.3 °C9 January 1951	23.1 °C	782 mm	72	0
1950	32.5 °C24 August 1950	7.1 °C26 November 1950	23.2 °C	703 mm	58	0
1949	31.4 °C25 August 1949	8.4 °C1 January 1949	23.7 °C	867 mm	46	0
1948	31.9 °C27 June 1948	2.9 °C15 January 1948	23.9 °C	965 mm	45	0
1947	30.6 °C12 August 1947	6.6 °C6 February 1947	23.4 °C	904 mm	10	0
1946	30.6 °C15 August 1946	10.1 °C15 February 1946	23.6 °C	767 mm	12	0
1945	32.6 °C16 June 1945	9.8 °C2 February 1945	23.6 °C	1,029 mm	40	0
1944	32.2 °C19 August 1944	9.1 °C15 December 1944	23.9 °C	629 mm	73	0
1943	31.5 °C16 May 1943	9.0 °C4 March 1943	23.3 °C	968 mm	34	0
1942	32.9 °C23 August 1942	8.7 °C11 January 1942	23.4 °C	609 mm	51	0
1941	33.0 °C28 August 1941	8.5 °C10 February 1941	23.2 °C	612 mm	45	0
1940	31.3 °C21 July 1940	4.7 °C28 January 1940	22.6 °C	840 mm	15	0

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

26.7 °C

+0.4 °C

Hot days (≥ 30 °C)

78 d/yr

+14

Frost days (< 0 °C)

0 d/yr

Annual rainfall

876 mm

-4 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	19.5 °C	-1.8 °C	20 mm	-20 mm
Feb	24.1 °C	+2.3 °C	22 mm	-19 mm
Mar	24.1 °C	+0.5 °C	23 mm	-22 mm
Apr	27.1 °C	+1.2 °C	10 mm	-30 mm
May	28.9 °C	+0.7 °C	124 mm	+65 mm
Jun	29.9 °C	+0.5 °C	166 mm	+33 mm
Jul	30.4 °C	+0.5 °C	155 mm	+35 mm
Aug	30.4 °C	+0.3 °C	189 mm	+62 mm
Sep	29.6 °C	0.0 °C	115 mm	-25 mm
Oct	28.4 °C	+0.5 °C	34 mm	-36 mm
Nov	24.9 °C	-0.1 °C	4 mm	-27 mm
Dec	23.6 °C	+0.9 °C	15 mm	-18 mm

The year's extremes

Hottest day

33.6 °C

27 Jul 2025

Coldest day

6.2 °C

25 Jan 2025

Wettest day

91.7 mm

12 May 2025

Windiest day

39.1 km/h

22 Jan 2025

Strongest gust

60.8 km/h

17 Mar 2025

Hottest feels-like

40.4 °C

28 Jul 2025

Coldest feels-like

0.6 °C

25 Jan 2025

Sunniest day

13.0 h

2 May 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 Iona?

Iona has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.4 °C and it receives 880 mm of precipitation per year.

What is the hottest day ever recorded in Iona?

The hottest day measured in Iona between 1940 and 2025 was 19 August 2007, reaching 34.9 °C.

What is the coldest day in Iona?

The coldest day measured in Iona between 1940 and 2025 was 13 December 1962, at -0.7 °C.

Does it snow in Iona?

Almost never: Iona sees virtually no snow, with about 0 frost days per year.

Has the climate of Iona warmed?

Yes: Iona warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Iona?

The wettest day measured in Iona between 1940 and 2025 was 28 September 2022, with 168 mm of rain in 24 hours.

What was the windiest day in Iona?

The windiest day measured in Iona between 1940 and 2025 was 19 October 1944, with winds reaching 109.9 km/h.

What is the warmest month in Iona?

The warmest month in Iona is August (27.6 °C on average); the coldest is January (18.0 °C).

How much does it rain in Iona?

Iona receives on average 880 mm of precipitation per year, spread over about 129 rainy days.

Is it sunny in Iona?

Iona gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

What is the biggest single-day snowfall in Iona?

The heaviest 24-hour snowfall measured in Iona between 1940 and 2025 was 24 December 1989, with 0.2 cm.

Are there tropical nights in Iona?

Yes: Iona has on average 230 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Iona?

In Iona, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 5 July 2023, and the lowest was -7.7 °C on 13 December 1962.

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