Ozone Weather Records (USC00035514)

Record envelope, standing records and threshold days for Ozone (USC00035514), Arkansas, United States, with 135 years of record.

Key Facts for Ozone

Ozone (USC00035514) is a weather station in Arkansas, United States at 35.65 latitude and -93.43 longitude, 588 m (1,928 ft) above sea level.
The station reports from 1890 to 2024, 135 years of record.
1,168 records set at Ozone still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ozone set a daily record precipitation of 107.2 mm (4.2 in) on 5 November 2024.

About the Station

Location: Arkansas, United States, 35.65 latitude, -93.43 longitude.
Elevation: 588 m (1,928 ft).
Period of record: 1890 to 2024, 135 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Ozone. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ozone, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.3 C (64.9 F)	-18.3 C (-0.9 F)	n/a	n/a
Feb	16.7 C (62.1 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	23.9 C (75.0 F)	-9.4 C (15.1 F)	n/a	n/a
Apr	27.8 C (82.0 F)	0.6 C (33.1 F)	n/a	n/a
May	27.2 C (81.0 F)	3.3 C (37.9 F)	n/a	n/a
Jun	32.2 C (90.0 F)	10.6 C (51.1 F)	n/a	n/a
Jul	36.1 C (97.0 F)	16.7 C (62.1 F)	n/a	n/a
Aug	32.2 C (90.0 F)	15.0 C (59.0 F)	n/a	n/a
Sep	29.4 C (84.9 F)	7.8 C (46.0 F)	n/a	n/a
Oct	26.1 C (79.0 F)	1.1 C (34.0 F)	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

1,168 standing records

1,168 records at Ozone still stand. 1892 holds the most, with 819.

All-Time Record Progression

2 new records

2 all-time records were set at Ozone between 6 January 1988 and 3 November 1994. Each dot is a new record.

When Ozone set new all-time records
Date	Kind	Detail
1988-01-06	Record daily snowfall	Record daily snowfall 35.6 cm (14.0 in)
1994-11-03	Record daily precipitation	Record daily precipitation 195.3 mm (7.7 in)

Wettest Day of Each Month

Nov: 195.3 mm (7.7 in)

The wettest day on record for each calendar month at Ozone. The most was 195.3 mm (7.7 in) on 3 November 1994.

Record daily precipitation for each month at Ozone
Month	Record daily precipitation (mm)	Date
Jan	99.1 mm (3.9 in)	30 January 1969
Feb	85.1 mm (3.4 in)	22 February 1985
Mar	111.8 mm (4.4 in)	19 March 2008
Apr	146.3 mm (5.8 in)	29 April 2021
May	104.1 mm (4.1 in)	10 May 2015
Jun	133.9 mm (5.3 in)	5 June 1974
Jul	141.7 mm (5.6 in)	21 July 1958
Aug	118.6 mm (4.7 in)	15 August 2017
Sep	147.3 mm (5.8 in)	8 September 2010
Oct	124.7 mm (4.9 in)	16 October 2006
Nov	195.3 mm (7.7 in)	3 November 1994
Dec	157.0 mm (6.2 in)	10 December 1971

Period of Record Coverage

1890 to 2011

3 years of record at Ozone, 1890 to 2011. 3 years have data for under 90 percent of days and are left out of rankings: 1890, 1892, 2011.

Latest Records

Latest records at Ozone
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 November 2024	Ozone, US	daily rain	107.2 mm (4.2 in)	62.2 mm (2.4 in)	2 years	37 of 100 (Notable)
4 November 2024	Ozone, US	daily rain	129.5 mm (5.1 in)	11.6 mm (0.5 in)	30 years	24 of 100 (Routine)
9 July 2024	Ozone, US	daily rain	104.1 mm (4.1 in)	75.1 mm (3.0 in)	8 years	52 of 100 (Notable)
15 March 2024	Ozone, US	daily rain	42.2 mm (1.7 in)	11.0 mm (0.4 in)	3 years	16 of 100 (Routine)
4 February 2024	Ozone, US	daily rain (Tie)	37.1 mm (1.5 in)	tie	4 years	2 of 100 (Routine)
23 January 2024	Ozone, US	daily rain	45.7 mm (1.8 in)	12.7 mm (0.5 in)	28 years	25 of 100 (Routine)
18 January 2024	Ozone, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	68 years	20 of 100 (Routine)
17 January 2024	Ozone, US	daily snow depth	7.6 cm (3.0 in)	7.6 cm (3.0 in)	68 years	20 of 100 (Routine)
16 January 2024	Ozone, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	1 year	1 of 100 (Routine)
15 January 2024	Ozone, US	daily snowfall	12.7 cm (5.0 in)	9.9 cm (3.9 in)	1 year	24 of 100 (Routine)
15 January 2024	Ozone, US	daily snow depth	12.7 cm (5.0 in)	10.2 cm (4.0 in)	1 year	19 of 100 (Routine)
9 January 2024	Ozone, US	daily rain	36.8 mm (1.4 in)	18.3 mm (0.7 in)	8 years	23 of 100 (Routine)
5 January 2024	Ozone, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	131 years	20 of 100 (Routine)
25 December 2023	Ozone, US	daily rain	55.9 mm (2.2 in)	2.6 mm (0.10 in)	36 years	21 of 100 (Routine)
1 December 2023	Ozone, US	daily rain	51.1 mm (2.0 in)	0.3 mm (0.01 in)	32 years	19 of 100 (Routine)
3 March 2023	Ozone, US	daily rain (Tie)	63.5 mm (2.5 in)	tie	14 years	3 of 100 (Routine)
9 February 2023	Ozone, US	daily rain	74.7 mm (2.9 in)	54.9 mm (2.2 in)	67 years	65 of 100 (Major)
28 January 2023	Ozone, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	67 years	20 of 100 (Routine)
27 January 2023	Ozone, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	67 years	41 of 100 (Notable)
26 January 2023	Ozone, US	daily snow depth	25.4 cm (10.0 in)	25.4 cm (10.0 in)	67 years	51 of 100 (Notable)

Extremes by Year

1890 to 2024

Yearly extremes at Ozone: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.1 C (97.0 F)	2011	34.4 C (93.9 F)	3
Coldest night (TNn)	-18.3 C (-0.9 F)	1892	-8.6 C (16.5 F)	2
Wettest day (Rx1day)	195.3 mm (7.7 in)	1994	79.9 mm (3.1 in)	72
Wettest five days (Rx5day)	319.3 mm (12.6 in)	1994	138.1 mm (5.4 in)	72
Longest dry spell (CDD)	48 days	1963	23 days	72

Hottest day (TXx)

The hottest day of the year at Ozone, 1890 to 2024. The record is 36.1 C (97.0 F) in 2011, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Ozone by year
Year	Hottest day (TXx)
1890	32.2 C (90.0 F)
1892	34.4 C (93.9 F)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	36.1 C (97.0 F)
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a

Coldest night (TNn)

The coldest night of the year at Ozone, 1890 to 2024. The record is -18.3 C (-0.9 F) in 1892, marked on the chart; the median year is -8.6 C (16.5 F).

Coldest night (TNn) at Ozone by year
Year	Coldest night (TNn)
1890	1.1 C (34.0 F)
1892	-18.3 C (-0.9 F)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a

Wettest day (Rx1day)

The wettest day of the year at Ozone, 1890 to 2024. The record is 195.3 mm (7.7 in) in 1994, marked on the chart; the median year is 79.9 mm (3.1 in).

Wettest day (Rx1day) at Ozone by year
Year	Wettest day (Rx1day)
1890	64.3 mm (2.5 in)
1892	70.6 mm (2.8 in)
1955	62.2 mm (2.4 in)
1956	73.9 mm (2.9 in)
1957	107.2 mm (4.2 in)
1958	141.7 mm (5.6 in)
1959	101.6 mm (4.0 in)
1960	81.3 mm (3.2 in)
1961	108.0 mm (4.3 in)
1962	41.9 mm (1.6 in)
1963	58.4 mm (2.3 in)
1964	76.2 mm (3.0 in)
1965	101.6 mm (4.0 in)
1966	71.1 mm (2.8 in)
1967	99.1 mm (3.9 in)
1968	86.4 mm (3.4 in)
1969	99.1 mm (3.9 in)
1970	58.4 mm (2.3 in)
1971	157.0 mm (6.2 in)
1972	67.6 mm (2.7 in)
1973	124.5 mm (4.9 in)
1974	133.9 mm (5.3 in)
1975	87.1 mm (3.4 in)
1976	102.9 mm (4.1 in)
1977	104.1 mm (4.1 in)
1978	54.6 mm (2.1 in)
1979	101.1 mm (4.0 in)
1980	55.9 mm (2.2 in)
1981	50.8 mm (2.0 in)
1982	57.2 mm (2.3 in)
1983	55.9 mm (2.2 in)
1984	77.5 mm (3.1 in)
1985	85.1 mm (3.4 in)
1986	65.5 mm (2.6 in)
1987	59.7 mm (2.4 in)
1988	78.7 mm (3.1 in)
1989	58.4 mm (2.3 in)
1990	101.6 mm (4.0 in)
1991	114.3 mm (4.5 in)
1992	53.3 mm (2.1 in)
1993	40.1 mm (1.6 in)
1994	195.3 mm (7.7 in)
1995	77.7 mm (3.1 in)
1996	87.4 mm (3.4 in)
1997	76.5 mm (3.0 in)
1998	114.0 mm (4.5 in)
1999	77.5 mm (3.1 in)
2000	108.5 mm (4.3 in)
2001	57.4 mm (2.3 in)
2002	101.6 mm (4.0 in)
2003	80.3 mm (3.2 in)
2004	38.9 mm (1.5 in)
2005	74.9 mm (2.9 in)
2006	124.7 mm (4.9 in)
2007	79.5 mm (3.1 in)
2008	121.7 mm (4.8 in)
2009	67.6 mm (2.7 in)
2010	147.3 mm (5.8 in)
2011	91.9 mm (3.6 in)
2012	75.2 mm (3.0 in)
2013	57.2 mm (2.3 in)
2014	72.9 mm (2.9 in)
2015	104.1 mm (4.1 in)
2016	63.2 mm (2.5 in)
2017	118.6 mm (4.7 in)
2018	84.1 mm (3.3 in)
2019	90.2 mm (3.6 in)
2020	83.3 mm (3.3 in)
2021	146.3 mm (5.8 in)
2022	77.0 mm (3.0 in)
2023	74.7 mm (2.9 in)
2024	129.5 mm (5.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ozone, 1890 to 2024. The record is 319.3 mm (12.6 in) in 1994, marked on the chart; the median year is 138.1 mm (5.4 in).

Wettest five days (Rx5day) at Ozone by year
Year	Wettest five days (Rx5day)
1890	103.2 mm (4.1 in)
1892	151.1 mm (5.9 in)
1955	73.6 mm (2.9 in)
1956	90.1 mm (3.5 in)
1957	207.8 mm (8.2 in)
1958	179.1 mm (7.1 in)
1959	139.7 mm (5.5 in)
1960	128.3 mm (5.1 in)
1961	235.1 mm (9.3 in)
1962	89.4 mm (3.5 in)
1963	99.1 mm (3.9 in)
1964	114.3 mm (4.5 in)
1965	108.4 mm (4.3 in)
1966	94.0 mm (3.7 in)
1967	123.2 mm (4.9 in)
1968	147.3 mm (5.8 in)
1969	124.5 mm (4.9 in)
1970	130.8 mm (5.1 in)
1971	249.8 mm (9.8 in)
1972	166.4 mm (6.6 in)
1973	264.7 mm (10.4 in)
1974	238.8 mm (9.4 in)
1975	111.3 mm (4.4 in)
1976	132.1 mm (5.2 in)
1977	154.9 mm (6.1 in)
1978	137.7 mm (5.4 in)
1979	150.6 mm (5.9 in)
1980	99.1 mm (3.9 in)
1981	83.8 mm (3.3 in)
1982	94.0 mm (3.7 in)
1983	109.7 mm (4.3 in)
1984	152.4 mm (6.0 in)
1985	139.7 mm (5.5 in)
1986	108.8 mm (4.3 in)
1987	123.1 mm (4.8 in)
1988	159.2 mm (6.3 in)
1989	138.5 mm (5.5 in)
1990	193.5 mm (7.6 in)
1991	264.2 mm (10.4 in)
1992	124.5 mm (4.9 in)
1993	100.3 mm (3.9 in)
1994	319.3 mm (12.6 in)
1995	104.1 mm (4.1 in)
1996	153.3 mm (6.0 in)
1997	111.5 mm (4.4 in)
1998	166.9 mm (6.6 in)
1999	115.8 mm (4.6 in)
2000	198.7 mm (7.8 in)
2001	139.2 mm (5.5 in)
2002	164.3 mm (6.5 in)
2003	100.5 mm (4.0 in)
2004	46.1 mm (1.8 in)
2005	152.6 mm (6.0 in)
2006	218.3 mm (8.6 in)
2007	139.2 mm (5.5 in)
2008	200.2 mm (7.9 in)
2009	117.1 mm (4.6 in)
2010	296.9 mm (11.7 in)
2011	158.2 mm (6.2 in)
2012	82.3 mm (3.2 in)
2013	56.7 mm (2.2 in)
2014	133.1 mm (5.2 in)
2015	268.7 mm (10.6 in)
2016	104.2 mm (4.1 in)
2017	213.3 mm (8.4 in)
2018	159.0 mm (6.3 in)
2019	122.7 mm (4.8 in)
2020	143.6 mm (5.7 in)
2021	153.9 mm (6.1 in)
2022	104.9 mm (4.1 in)
2023	125.8 mm (5.0 in)
2024	251.5 mm (9.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ozone, 1890 to 2024. The record is 48 days in 1963, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Ozone by year
Year	Longest dry spell (CDD)
1890	9 days
1892	13 days
1955	29 days
1956	24 days
1957	22 days
1958	14 days
1959	30 days
1960	18 days
1961	26 days
1962	23 days
1963	48 days
1964	44 days
1965	35 days
1966	28 days
1967	25 days
1968	22 days
1969	25 days
1970	29 days
1971	25 days
1972	24 days
1973	26 days
1974	18 days
1975	23 days
1976	23 days
1977	15 days
1978	27 days
1979	24 days
1980	25 days
1981	28 days
1982	19 days
1983	34 days
1984	26 days
1985	39 days
1986	31 days
1987	20 days
1988	21 days
1989	30 days
1990	25 days
1991	19 days
1992	24 days
1993	11 days
1994	16 days
1995	19 days
1996	22 days
1997	13 days
1998	33 days
1999	23 days
2000	33 days
2001	20 days
2002	22 days
2003	23 days
2004	12 days
2005	24 days
2006	21 days
2007	38 days
2008	14 days
2009	17 days
2010	22 days
2011	23 days
2012	33 days
2013	1 day
2014	15 days
2015	19 days
2016	24 days
2017	22 days
2018	21 days
2019	18 days
2020	20 days
2021	13 days
2022	29 days
2023	14 days
2024	35 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.

Rainfall Return Levels

58 years, 1956 to 2024

A day with at least 85.3 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 182.0 mm (7.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Ozone: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	85.3 mm (3.4 in)
5 years	111.3 mm (4.4 in)
10 years	128.5 mm (5.1 in)
25 years	150.2 mm (5.9 in)
50 years	166.2 mm (6.5 in)
100 years	182.0 mm (7.2 in)	Longer than the 58 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, 58 years of values from 1956 to 2024.

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: 195.3 mm (7.7 in) in 1994; 157.0 mm (6.2 in) in 1971; 146.3 mm (5.8 in) in 2021.

Download the Data

Data for Ozone standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ozone 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).