Ozark Weather Records (USC00035508)

Record envelope, standing records and threshold days for Ozark (USC00035508), Arkansas, United States, with 103 years of record.

Key Facts for Ozark

Ozark (USC00035508) is a weather station in Arkansas, United States at 35.48 latitude and -93.82 longitude, 119 m (390 ft) above sea level.
The station reports from 1892 to 1994, 103 years of record.
1,464 records set at Ozark still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ozark set a daily record precipitation of 49.5 mm (1.9 in) on 20 February 1994.

About the Station

Location: Arkansas, United States, 35.48 latitude, -93.82 longitude.
Elevation: 119 m (390 ft).
Period of record: 1892 to 1994, 103 years.
Eligible elements: tmax, tmin, 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 Ozark. 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 Ozark, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.2 C (81.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-26.1 C (-15.0 F)	n/a	n/a
Mar	34.4 C (93.9 F)	-15.6 C (3.9 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-5.6 C (21.9 F)	n/a	n/a
May	37.2 C (99.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	42.2 C (108.0 F)	7.8 C (46.0 F)	n/a	n/a
Jul	46.7 C (116.1 F)	8.9 C (48.0 F)	n/a	n/a
Aug	48.9 C (120.0 F)	7.8 C (46.0 F)	n/a	n/a
Sep	43.3 C (109.9 F)	0.0 C (32.0 F)	n/a	n/a
Oct	40.0 C (104.0 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-12.8 C (9.0 F)	n/a	n/a
Dec	27.8 C (82.0 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ozark still stand. 1989 holds the most, with 38.

Standing records at Ozark by the year they were set
Year set	Standing records
1892	19
1893	6
1894	20
1895	20
1896	29
1897	18
1898	19
1899	31
1900	9
1901	11
1902	22
1903	15
1904	11
1905	14
1906	14
1907	31
1908	14
1909	23
1910	22
1911	28
1916	19
1917	19
1918	27
1919	3
1920	21
1921	12
1922	12
1923	13
1924	16
1925	11
1926	7
1927	23
1928	15
1929	26
1930	22
1931	8
1932	14
1933	15
1934	29
1935	5
1936	27
1937	13
1938	13
1939	19
1940	14
1941	3
1942	15
1943	25
1944	3
1945	7
1946	15
1947	10
1948	16
1949	10
1950	18
1951	17
1952	17
1953	27
1954	19
1955	19
1956	17
1957	8
1958	3
1959	10
1960	16
1961	12
1962	16
1963	14
1964	13
1965	15
1966	16
1967	16
1968	6
1969	2
1970	8
1971	8
1972	9
1973	2
1974	17
1975	8
1976	12
1977	3
1978	6
1979	7
1980	13
1981	6
1982	7
1983	2
1984	14
1985	22
1986	14
1987	14
1988	20
1989	38
1990	9
1991	18
1992	23
1993	20

All-Time Record Progression

3 new records

3 all-time records were set at Ozark between 13 December 1927 and 10 August 1936. Each dot is a new record.

When Ozark set new all-time records
Date	Kind	Detail
1927-12-13	Record daily precipitation	Record daily precipitation 168.4 mm (6.6 in)
1936-08-09	Record high maximum temperature	Record high maximum temperature 46.1 C (115.0 F)
1936-08-10	Record high maximum temperature	Record high maximum temperature 48.9 C (120.0 F)

Wettest Day of Each Month

Dec: 168.4 mm (6.6 in)

The wettest day on record for each calendar month at Ozark. The most was 168.4 mm (6.6 in) on 13 December 1927.

Record daily precipitation for each month at Ozark
Month	Record daily precipitation (mm)	Date
Jan	109.0 mm (4.3 in)	31 January 1982
Feb	129.8 mm (5.1 in)	10 February 1966
Mar	101.6 mm (4.0 in)	9 March 1901
Apr	118.6 mm (4.7 in)	4 April 1964
May	132.1 mm (5.2 in)	20 May 1949
Jun	102.9 mm (4.1 in)	10 June 1945
Jul	91.4 mm (3.6 in)	18 July 1950
Aug	152.7 mm (6.0 in)	5 August 1992
Sep	102.9 mm (4.1 in)	25 September 1941
Oct	121.9 mm (4.8 in)	31 October 1900
Nov	119.4 mm (4.7 in)	4 November 1959
Dec	168.4 mm (6.6 in)	13 December 1927

Period of Record Coverage

1892 to 1994

99 years of record at Ozark, 1892 to 1994. 14 years have data for under 90 percent of days and are left out of rankings: 1892, 1893, 1900, 1904, 1907, 1908, 1911, 1916 and others.

Days with data per year at Ozark
Year	Days with data	Share of year	Complete
1892	303	83%	No
1893	273	75%	No
1894	364	100%	Yes
1895	362	99%	Yes
1896	362	99%	Yes
1897	364	100%	Yes
1898	361	99%	Yes
1899	362	99%	Yes
1900	318	87%	No
1901	358	98%	Yes
1902	348	95%	Yes
1903	362	99%	Yes
1904	327	89%	No
1905	354	97%	Yes
1906	353	97%	Yes
1907	295	81%	No
1908	316	86%	No
1909	329	90%	Yes
1910	353	97%	Yes
1911	272	75%	No
1916	212	58%	No
1917	307	84%	No
1918	329	90%	Yes
1919	290	79%	No
1920	304	83%	No
1921	351	96%	Yes
1922	356	98%	Yes
1923	337	92%	Yes
1924	351	96%	Yes
1925	346	95%	Yes
1926	347	95%	Yes
1927	326	89%	No
1928	350	96%	Yes
1929	348	95%	Yes
1930	363	99%	Yes
1931	363	99%	Yes
1932	365	100%	Yes
1933	365	100%	Yes
1934	360	99%	Yes
1935	363	99%	Yes
1936	333	91%	Yes
1937	362	99%	Yes
1938	364	100%	Yes
1939	364	100%	Yes
1940	362	99%	Yes
1941	356	98%	Yes
1942	364	100%	Yes
1943	365	100%	Yes
1944	359	98%	Yes
1945	359	98%	Yes
1946	361	99%	Yes
1947	363	99%	Yes
1948	366	100%	Yes
1949	352	96%	Yes
1950	364	100%	Yes
1951	362	99%	Yes
1952	363	99%	Yes
1953	359	98%	Yes
1954	352	96%	Yes
1955	365	100%	Yes
1956	363	99%	Yes
1957	361	99%	Yes
1958	365	100%	Yes
1959	362	99%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	363	99%	Yes
1964	363	99%	Yes
1965	362	99%	Yes
1966	363	99%	Yes
1967	364	100%	Yes
1968	363	99%	Yes
1969	364	100%	Yes
1970	362	99%	Yes
1971	363	99%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	363	99%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	363	99%	Yes
1981	365	100%	Yes
1982	361	99%	Yes
1983	114	31%	No
1984	334	91%	Yes
1985	363	99%	Yes
1986	364	100%	Yes
1987	365	100%	Yes
1988	361	99%	Yes
1989	361	99%	Yes
1990	345	95%	Yes
1991	363	99%	Yes
1992	363	99%	Yes
1993	350	96%	Yes
1994	56	15%	No

Latest Records

Latest records at Ozark
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 February 1994	Ozark, US	daily rain	49.5 mm (1.9 in)	12.9 mm (0.5 in)	43 years	30 of 100 (Routine)
14 November 1993	Ozark, US	daily rain	47.0 mm (1.9 in)	3.1 mm (0.12 in)	67 years	31 of 100 (Routine)
7 November 1993	Ozark, US	daily low min	-8.9 C (16.0 F)	2.8 C (5.0 F)	34 years	24 of 100 (Routine)
7 November 1993	Ozark, US	daily low max	5.6 C (42.1 F)	1.1 C (2.0 F)	42 years	23 of 100 (Routine)
2 November 1993	Ozark, US	daily low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	2 years	12 of 100 (Routine)
31 October 1993	Ozark, US	monthly low min	-7.2 C (19.0 F)	0.5 C (0.9 F)	76 years	42 of 100 (Notable)
31 October 1993	Ozark, US	monthly low max (Tie)	4.4 C (39.9 F)	tie	68 years	10 of 100 (Routine)
20 October 1993	Ozark, US	daily rain	33.3 mm (1.3 in)	5.4 mm (0.21 in)	22 years	19 of 100 (Routine)
11 October 1993	Ozark, US	daily low max	16.1 C (61.0 F)	0.6 C (1.1 F)	3 years	11 of 100 (Routine)
9 September 1993	Ozark, US	daily low max	21.1 C (70.0 F)	1.1 C (2.0 F)	94 years	40 of 100 (Notable)
7 August 1993	Ozark, US	daily low max	24.4 C (75.9 F)	2.3 C (4.1 F)	44 years	29 of 100 (Routine)
7 August 1993	Ozark, US	daily low min	12.8 C (55.0 F)	1.1 C (2.0 F)	36 years	23 of 100 (Routine)
6 August 1993	Ozark, US	daily low max	24.4 C (75.9 F)	1.2 C (2.2 F)	22 years	19 of 100 (Routine)
25 May 1993	Ozark, US	daily low min	3.3 C (37.9 F)	3.9 C (7.0 F)	100 years	49 of 100 (Notable)
21 May 1993	Ozark, US	daily low min (Tie)	6.7 C (44.1 F)	tie	50 years	6 of 100 (Routine)
14 May 1993	Ozark, US	daily low min	5.6 C (42.1 F)	1.1 C (2.0 F)	62 years	30 of 100 (Routine)
13 May 1993	Ozark, US	daily low max (Tie)	18.3 C (64.9 F)	tie	40 years	5 of 100 (Routine)
23 April 1993	Ozark, US	daily low min	-0.6 C (30.9 F)	1.7 C (3.1 F)	42 years	25 of 100 (Routine)
21 April 1993	Ozark, US	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	75 years	35 of 100 (Notable)
16 April 1993	Ozark, US	daily low max	8.3 C (46.9 F)	0.6 C (1.1 F)	64 years	30 of 100 (Routine)

Climate Trend

78 complete years, 1894 to 1992

One stripe for each of 78 complete years at Ozark, 1894 to 1992. Blue stripes are years cooler than the station's own mean of 16.3 C (61.3 F); red stripes are warmer. The coolest year was 1989, at 14.0 C (57.3 F), and the warmest was 1921, at 18.2 C (64.7 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Ozark as warming stripes, 1894 to 1992
Year	Annual mean temperature	Difference from the station mean
1894	17.1 C	+0.81 C
1895	15.9 C	-0.39 C
1896	18.0 C	+1.73 C
1897	17.7 C	+1.39 C
1898	16.8 C	+0.45 C
1899	16.9 C	+0.56 C
1901	17.1 C	+0.80 C
1902	16.6 C	+0.28 C
1903	15.4 C	-0.92 C
1906	15.7 C	-0.63 C
1910	16.7 C	+0.37 C
1918	16.3 C	-0.01 C
1921	18.2 C	+1.85 C
1922	17.6 C	+1.30 C
1923	16.5 C	+0.24 C
1924	15.5 C	-0.76 C
1925	16.9 C	+0.59 C
1926	16.3 C	-0.04 C
1927	16.8 C	+0.53 C
1928	15.9 C	-0.45 C
1929	15.1 C	-1.22 C
1930	15.8 C	-0.48 C
1931	16.7 C	+0.37 C
1932	16.2 C	-0.06 C
1933	16.7 C	+0.42 C
1934	16.9 C	+0.61 C
1935	16.3 C	+0.02 C
1937	15.9 C	-0.43 C
1938	17.4 C	+1.14 C
1940	15.3 C	-1.01 C
1941	16.0 C	-0.32 C
1942	16.3 C	-0.01 C
1943	16.8 C	+0.52 C
1944	16.4 C	+0.06 C
1945	16.1 C	-0.17 C
1946	17.3 C	+0.97 C
1947	16.0 C	-0.26 C
1948	15.3 C	-0.97 C
1950	15.9 C	-0.40 C
1951	15.8 C	-0.51 C
1952	16.5 C	+0.16 C
1953	17.2 C	+0.88 C
1954	17.9 C	+1.59 C
1955	16.4 C	+0.13 C
1956	17.1 C	+0.80 C
1957	16.9 C	+0.55 C
1958	15.8 C	-0.52 C
1959	16.3 C	-0.01 C
1960	15.9 C	-0.36 C
1961	15.9 C	-0.43 C
1962	16.6 C	+0.30 C
1963	17.0 C	+0.68 C
1964	16.8 C	+0.47 C
1965	16.9 C	+0.64 C
1966	15.9 C	-0.36 C
1967	16.4 C	+0.08 C
1968	15.7 C	-0.63 C
1969	16.1 C	-0.17 C
1970	16.4 C	+0.09 C
1971	16.6 C	+0.30 C
1972	16.4 C	+0.07 C
1973	16.6 C	+0.28 C
1974	16.5 C	+0.23 C
1975	16.2 C	-0.09 C
1976	15.8 C	-0.52 C
1977	16.6 C	+0.32 C
1978	15.9 C	-0.40 C
1979	15.1 C	-1.21 C
1980	16.9 C	+0.63 C
1981	16.6 C	+0.29 C
1982	16.3 C	-0.04 C
1985	14.6 C	-1.69 C
1986	15.6 C	-0.66 C
1987	15.3 C	-1.01 C
1988	14.5 C	-1.85 C
1989	14.0 C	-2.27 C
1991	15.4 C	-0.89 C
1992	14.6 C	-1.66 C

The annual mean temperature here has fallen by 0.1 C (0.1 to 0.2) per decade over 1894 to 1992. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 78 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ozark
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.1 C (-0.2 to -0.1) per decade	-0.2 F (-0.3 to -0.1) per decade	1894 to 1992	78	Fall
Mean daily maximum	-0.08 C (-0.15 to -0.01) per decade	-0.15 F (-0.28 to -0.03) per decade	1894 to 1992	78	Fall
Mean daily minimum	-0.2 C (-0.2 to -0.1) per decade	-0.3 F (-0.4 to -0.2) per decade	1894 to 1992	78	Fall

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

1892 to 1994

Yearly extremes at Ozark: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1936	39.4 C (102.9 F)	99
Coldest night (TNn)	-26.7 C (-16.1 F)	1918	-13.3 C (8.1 F)	99
Wettest day (Rx1day)	168.4 mm (6.6 in)	1927	76.5 mm (3.0 in)	99
Wettest five days (Rx5day)	230.8 mm (9.1 in)	1973	117.5 mm (4.6 in)	99
Longest dry spell (CDD)	45 days	1953	23 days	99

Hottest day (TXx)

The hottest day of the year at Ozark, 1892 to 1994. The record is 48.9 C (120.0 F) in 1936, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Ozark by year
Year	Hottest day (TXx)
1892	38.3 C (100.9 F)
1893	38.9 C (102.0 F)
1894	41.7 C (107.1 F)
1895	37.8 C (100.0 F)
1896	42.8 C (109.0 F)
1897	41.1 C (106.0 F)
1898	37.8 C (100.0 F)
1899	40.6 C (105.1 F)
1900	40.0 C (104.0 F)
1901	42.8 C (109.0 F)
1902	39.4 C (102.9 F)
1903	36.7 C (98.1 F)
1904	37.8 C (100.0 F)
1905	37.2 C (99.0 F)
1906	35.6 C (96.1 F)
1907	41.1 C (106.0 F)
1908	37.8 C (100.0 F)
1909	45.6 C (114.1 F)
1910	40.6 C (105.1 F)
1911	40.6 C (105.1 F)
1916	41.7 C (107.1 F)
1917	40.0 C (104.0 F)
1918	42.8 C (109.0 F)
1919	40.0 C (104.0 F)
1920	38.3 C (100.9 F)
1921	38.3 C (100.9 F)
1922	40.0 C (104.0 F)
1923	41.1 C (106.0 F)
1924	39.4 C (102.9 F)
1925	40.6 C (105.1 F)
1926	40.0 C (104.0 F)
1927	37.8 C (100.0 F)
1928	36.7 C (98.1 F)
1929	40.0 C (104.0 F)
1930	45.0 C (113.0 F)
1931	39.4 C (102.9 F)
1932	40.0 C (104.0 F)
1933	41.1 C (106.0 F)
1934	44.4 C (111.9 F)
1935	42.8 C (109.0 F)
1936	48.9 C (120.0 F)
1937	42.8 C (109.0 F)
1938	39.4 C (102.9 F)
1939	42.8 C (109.0 F)
1940	37.8 C (100.0 F)
1941	38.9 C (102.0 F)
1942	39.4 C (102.9 F)
1943	44.4 C (111.9 F)
1944	38.3 C (100.9 F)
1945	38.3 C (100.9 F)
1946	39.4 C (102.9 F)
1947	43.3 C (109.9 F)
1948	36.7 C (98.1 F)
1949	38.9 C (102.0 F)
1950	36.1 C (97.0 F)
1951	39.4 C (102.9 F)
1952	41.1 C (106.0 F)
1953	41.7 C (107.1 F)
1954	46.7 C (116.1 F)
1955	38.9 C (102.0 F)
1956	44.4 C (111.9 F)
1957	40.6 C (105.1 F)
1958	37.2 C (99.0 F)
1959	36.7 C (98.1 F)
1960	37.8 C (100.0 F)
1961	35.6 C (96.1 F)
1962	39.4 C (102.9 F)
1963	42.2 C (108.0 F)
1964	41.1 C (106.0 F)
1965	38.3 C (100.9 F)
1966	40.0 C (104.0 F)
1967	36.7 C (98.1 F)
1968	37.8 C (100.0 F)
1969	40.0 C (104.0 F)
1970	41.1 C (106.0 F)
1971	38.9 C (102.0 F)
1972	40.6 C (105.1 F)
1973	38.9 C (102.0 F)
1974	41.1 C (106.0 F)
1975	38.3 C (100.9 F)
1976	38.9 C (102.0 F)
1977	37.2 C (99.0 F)
1978	40.6 C (105.1 F)
1979	37.2 C (99.0 F)
1980	42.2 C (108.0 F)
1981	37.8 C (100.0 F)
1982	37.2 C (99.0 F)
1983	28.3 C (82.9 F)
1984	41.7 C (107.1 F)
1985	38.9 C (102.0 F)
1986	42.8 C (109.0 F)
1987	39.4 C (102.9 F)
1988	38.9 C (102.0 F)
1989	37.8 C (100.0 F)
1990	38.9 C (102.0 F)
1991	37.8 C (100.0 F)
1992	35.6 C (96.1 F)
1993	39.4 C (102.9 F)
1994	22.2 C (72.0 F)

Coldest night (TNn)

The coldest night of the year at Ozark, 1892 to 1994. The record is -26.7 C (-16.1 F) in 1918, marked on the chart; the median year is -13.3 C (8.1 F).

Coldest night (TNn) at Ozark by year
Year	Coldest night (TNn)
1892	-19.4 C (-2.9 F)
1893	-17.8 C (0.0 F)
1894	-19.4 C (-2.9 F)
1895	-20.0 C (-4.0 F)
1896	-11.1 C (12.0 F)
1897	-14.4 C (6.1 F)
1898	-10.0 C (14.0 F)
1899	-26.1 C (-15.0 F)
1900	-14.4 C (6.1 F)
1901	-16.1 C (3.0 F)
1902	-11.1 C (12.0 F)
1903	-17.8 C (0.0 F)
1904	-16.1 C (3.0 F)
1905	-22.2 C (-8.0 F)
1906	-13.3 C (8.1 F)
1907	-10.6 C (12.9 F)
1908	-11.1 C (12.0 F)
1909	-13.9 C (7.0 F)
1910	-17.8 C (0.0 F)
1911	-17.2 C (1.0 F)
1916	-22.2 C (-8.0 F)
1917	-18.9 C (-2.0 F)
1918	-26.7 C (-16.1 F)
1919	-13.3 C (8.1 F)
1920	-10.6 C (12.9 F)
1921	-12.2 C (10.0 F)
1922	-6.1 C (21.0 F)
1923	-11.7 C (10.9 F)
1924	-15.6 C (3.9 F)
1925	-13.9 C (7.0 F)
1926	-10.0 C (14.0 F)
1927	-12.8 C (9.0 F)
1928	-16.7 C (1.9 F)
1929	-17.8 C (0.0 F)
1930	-26.7 C (-16.1 F)
1931	-11.1 C (12.0 F)
1932	-11.1 C (12.0 F)
1933	-19.4 C (-2.9 F)
1934	-10.0 C (14.0 F)
1935	-13.9 C (7.0 F)
1936	-17.8 C (0.0 F)
1937	-12.8 C (9.0 F)
1938	-12.2 C (10.0 F)
1939	-12.2 C (10.0 F)
1940	-20.6 C (-5.1 F)
1941	-11.1 C (12.0 F)
1942	-21.1 C (-6.0 F)
1943	-17.2 C (1.0 F)
1944	-18.9 C (-2.0 F)
1945	-13.9 C (7.0 F)
1946	-11.1 C (12.0 F)
1947	-12.8 C (9.0 F)
1948	-12.8 C (9.0 F)
1949	-11.1 C (12.0 F)
1950	-15.0 C (5.0 F)
1951	-16.1 C (3.0 F)
1952	-8.3 C (17.1 F)
1953	-11.7 C (10.9 F)
1954	-13.9 C (7.0 F)
1955	-13.3 C (8.1 F)
1956	-10.6 C (12.9 F)
1957	-12.2 C (10.0 F)
1958	-13.3 C (8.1 F)
1959	-15.0 C (5.0 F)
1960	-10.0 C (14.0 F)
1961	-12.8 C (9.0 F)
1962	-18.9 C (-2.0 F)
1963	-16.1 C (3.0 F)
1964	-16.1 C (3.0 F)
1965	-10.0 C (14.0 F)
1966	-18.3 C (-0.9 F)
1967	-12.8 C (9.0 F)
1968	-14.4 C (6.1 F)
1969	-11.1 C (12.0 F)
1970	-16.1 C (3.0 F)
1971	-13.3 C (8.1 F)
1972	-12.8 C (9.0 F)
1973	-11.1 C (12.0 F)
1974	-11.1 C (12.0 F)
1975	-11.7 C (10.9 F)
1976	-15.0 C (5.0 F)
1977	-16.7 C (1.9 F)
1978	-13.3 C (8.1 F)
1979	-16.1 C (3.0 F)
1980	-12.2 C (10.0 F)
1981	-17.2 C (1.0 F)
1982	-18.3 C (-0.9 F)
1983	-7.8 C (18.0 F)
1984	-12.2 C (10.0 F)
1985	-21.7 C (-7.1 F)
1986	-13.3 C (8.1 F)
1987	-10.0 C (14.0 F)
1988	-20.0 C (-4.0 F)
1989	-22.2 C (-8.0 F)
1990	-14.4 C (6.1 F)
1991	-11.1 C (12.0 F)
1992	-12.8 C (9.0 F)
1993	-11.1 C (12.0 F)
1994	-11.7 C (10.9 F)

Wettest day (Rx1day)

The wettest day of the year at Ozark, 1892 to 1994. The record is 168.4 mm (6.6 in) in 1927, marked on the chart; the median year is 76.5 mm (3.0 in).

Wettest day (Rx1day) at Ozark by year
Year	Wettest day (Rx1day)
1892	67.8 mm (2.7 in)
1893	63.8 mm (2.5 in)
1894	114.3 mm (4.5 in)
1895	99.1 mm (3.9 in)
1896	46.5 mm (1.8 in)
1897	61.5 mm (2.4 in)
1898	152.4 mm (6.0 in)
1899	62.2 mm (2.4 in)
1900	121.9 mm (4.8 in)
1901	101.6 mm (4.0 in)
1902	85.3 mm (3.4 in)
1903	64.8 mm (2.6 in)
1904	66.0 mm (2.6 in)
1905	83.6 mm (3.3 in)
1906	97.8 mm (3.9 in)
1907	103.6 mm (4.1 in)
1908	114.0 mm (4.5 in)
1909	69.9 mm (2.8 in)
1910	65.0 mm (2.6 in)
1911	77.5 mm (3.1 in)
1916	53.3 mm (2.1 in)
1917	66.0 mm (2.6 in)
1918	110.5 mm (4.4 in)
1919	50.8 mm (2.0 in)
1920	77.2 mm (3.0 in)
1921	95.8 mm (3.8 in)
1922	53.8 mm (2.1 in)
1923	61.0 mm (2.4 in)
1924	49.3 mm (1.9 in)
1925	71.1 mm (2.8 in)
1926	74.7 mm (2.9 in)
1927	168.4 mm (6.6 in)
1928	106.7 mm (4.2 in)
1929	101.6 mm (4.0 in)
1930	59.2 mm (2.3 in)
1931	83.8 mm (3.3 in)
1932	66.0 mm (2.6 in)
1933	71.1 mm (2.8 in)
1934	92.5 mm (3.6 in)
1935	101.6 mm (4.0 in)
1936	58.4 mm (2.3 in)
1937	50.8 mm (2.0 in)
1938	91.4 mm (3.6 in)
1939	69.9 mm (2.8 in)
1940	46.0 mm (1.8 in)
1941	102.9 mm (4.1 in)
1942	53.8 mm (2.1 in)
1943	99.6 mm (3.9 in)
1944	76.5 mm (3.0 in)
1945	102.9 mm (4.1 in)
1946	89.4 mm (3.5 in)
1947	50.8 mm (2.0 in)
1948	93.5 mm (3.7 in)
1949	132.1 mm (5.2 in)
1950	91.4 mm (3.6 in)
1951	105.4 mm (4.1 in)
1952	108.0 mm (4.3 in)
1953	74.2 mm (2.9 in)
1954	72.6 mm (2.9 in)
1955	73.4 mm (2.9 in)
1956	75.7 mm (3.0 in)
1957	80.5 mm (3.2 in)
1958	105.4 mm (4.1 in)
1959	119.4 mm (4.7 in)
1960	74.4 mm (2.9 in)
1961	66.5 mm (2.6 in)
1962	52.6 mm (2.1 in)
1963	38.1 mm (1.5 in)
1964	118.6 mm (4.7 in)
1965	70.6 mm (2.8 in)
1966	129.8 mm (5.1 in)
1967	71.1 mm (2.8 in)
1968	109.7 mm (4.3 in)
1969	94.5 mm (3.7 in)
1970	55.4 mm (2.2 in)
1971	126.7 mm (5.0 in)
1972	65.0 mm (2.6 in)
1973	86.6 mm (3.4 in)
1974	68.3 mm (2.7 in)
1975	85.3 mm (3.4 in)
1976	54.1 mm (2.1 in)
1977	87.6 mm (3.4 in)
1978	61.5 mm (2.4 in)
1979	77.7 mm (3.1 in)
1980	50.5 mm (2.0 in)
1981	76.2 mm (3.0 in)
1982	126.7 mm (5.0 in)
1983	21.8 mm (0.9 in)
1984	90.7 mm (3.6 in)
1985	94.0 mm (3.7 in)
1986	52.6 mm (2.1 in)
1987	60.2 mm (2.4 in)
1988	57.4 mm (2.3 in)
1989	66.3 mm (2.6 in)
1990	93.5 mm (3.7 in)
1991	90.9 mm (3.6 in)
1992	152.7 mm (6.0 in)
1993	104.1 mm (4.1 in)
1994	49.5 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ozark, 1892 to 1994. The record is 230.8 mm (9.1 in) in 1973, marked on the chart; the median year is 117.5 mm (4.6 in).

Wettest five days (Rx5day) at Ozark by year
Year	Wettest five days (Rx5day)
1892	137.2 mm (5.4 in)
1893	92.2 mm (3.6 in)
1894	134.6 mm (5.3 in)
1895	113.4 mm (4.5 in)
1896	57.9 mm (2.3 in)
1897	143.3 mm (5.6 in)
1898	154.9 mm (6.1 in)
1899	97.8 mm (3.9 in)
1900	129.3 mm (5.1 in)
1901	71.1 mm (2.8 in)
1902	149.0 mm (5.9 in)
1903	83.3 mm (3.3 in)
1904	108.0 mm (4.3 in)
1905	83.6 mm (3.3 in)
1906	113.3 mm (4.5 in)
1907	145.5 mm (5.7 in)
1908	130.3 mm (5.1 in)
1909	55.4 mm (2.2 in)
1910	92.5 mm (3.6 in)
1911	106.5 mm (4.2 in)
1916	53.3 mm (2.1 in)
1917	92.3 mm (3.6 in)
1918	110.5 mm (4.4 in)
1919	105.3 mm (4.1 in)
1920	82.3 mm (3.2 in)
1921	148.1 mm (5.8 in)
1922	87.8 mm (3.5 in)
1923	83.8 mm (3.3 in)
1924	94.4 mm (3.7 in)
1925	107.7 mm (4.2 in)
1926	129.6 mm (5.1 in)
1927	200.2 mm (7.9 in)
1928	110.5 mm (4.4 in)
1929	137.2 mm (5.4 in)
1930	121.7 mm (4.8 in)
1931	99.6 mm (3.9 in)
1932	118.1 mm (4.6 in)
1933	145.2 mm (5.7 in)
1934	138.4 mm (5.4 in)
1935	230.1 mm (9.1 in)
1936	122.4 mm (4.8 in)
1937	58.2 mm (2.3 in)
1938	194.4 mm (7.7 in)
1939	117.4 mm (4.6 in)
1940	69.6 mm (2.7 in)
1941	109.7 mm (4.3 in)
1942	91.0 mm (3.6 in)
1943	221.0 mm (8.7 in)
1944	79.9 mm (3.1 in)
1945	230.2 mm (9.1 in)
1946	153.7 mm (6.1 in)
1947	68.6 mm (2.7 in)
1948	109.7 mm (4.3 in)
1949	195.3 mm (7.7 in)
1950	156.9 mm (6.2 in)
1951	142.8 mm (5.6 in)
1952	116.9 mm (4.6 in)
1953	118.7 mm (4.7 in)
1954	97.3 mm (3.8 in)
1955	116.3 mm (4.6 in)
1956	90.2 mm (3.6 in)
1957	151.1 mm (5.9 in)
1958	113.8 mm (4.5 in)
1959	166.3 mm (6.5 in)
1960	95.7 mm (3.8 in)
1961	149.6 mm (5.9 in)
1962	146.8 mm (5.8 in)
1963	93.1 mm (3.7 in)
1964	161.3 mm (6.4 in)
1965	92.7 mm (3.6 in)
1966	208.5 mm (8.2 in)
1967	134.2 mm (5.3 in)
1968	157.9 mm (6.2 in)
1969	142.5 mm (5.6 in)
1970	98.9 mm (3.9 in)
1971	207.2 mm (8.2 in)
1972	155.2 mm (6.1 in)
1973	230.8 mm (9.1 in)
1974	163.8 mm (6.4 in)
1975	123.7 mm (4.9 in)
1976	86.1 mm (3.4 in)
1977	108.2 mm (4.3 in)
1978	138.2 mm (5.4 in)
1979	97.8 mm (3.9 in)
1980	78.4 mm (3.1 in)
1981	115.6 mm (4.6 in)
1982	156.4 mm (6.2 in)
1983	32.7 mm (1.3 in)
1984	157.7 mm (6.2 in)
1985	131.6 mm (5.2 in)
1986	106.0 mm (4.2 in)
1987	120.4 mm (4.7 in)
1988	89.1 mm (3.5 in)
1989	118.4 mm (4.7 in)
1990	193.5 mm (7.6 in)
1991	225.3 mm (8.9 in)
1992	161.3 mm (6.4 in)
1993	117.5 mm (4.6 in)
1994	84.3 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ozark, 1892 to 1994. The record is 45 days in 1953, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Ozark by year
Year	Longest dry spell (CDD)
1892	39 days
1893	32 days
1894	25 days
1895	20 days
1896	23 days
1897	23 days
1898	18 days
1899	34 days
1900	15 days
1901	17 days
1902	17 days
1903	26 days
1904	27 days
1905	17 days
1906	17 days
1907	26 days
1908	29 days
1909	17 days
1910	20 days
1911	22 days
1916	19 days
1917	24 days
1918	32 days
1919	27 days
1920	26 days
1921	26 days
1922	27 days
1923	22 days
1924	25 days
1925	24 days
1926	20 days
1927	25 days
1928	34 days
1929	28 days
1930	26 days
1931	39 days
1932	23 days
1933	35 days
1934	27 days
1935	21 days
1936	29 days
1937	19 days
1938	34 days
1939	23 days
1940	18 days
1941	15 days
1942	18 days
1943	30 days
1944	31 days
1945	17 days
1946	19 days
1947	37 days
1948	31 days
1949	33 days
1950	30 days
1951	25 days
1952	33 days
1953	45 days
1954	32 days
1955	39 days
1956	18 days
1957	22 days
1958	23 days
1959	36 days
1960	24 days
1961	22 days
1962	23 days
1963	33 days
1964	24 days
1965	26 days
1966	25 days
1967	20 days
1968	16 days
1969	22 days
1970	26 days
1971	14 days
1972	21 days
1973	19 days
1974	18 days
1975	34 days
1976	20 days
1977	19 days
1978	26 days
1979	24 days
1980	32 days
1981	23 days
1982	19 days
1983	17 days
1984	12 days
1985	23 days
1986	23 days
1987	29 days
1988	25 days
1989	23 days
1990	23 days
1991	19 days
1992	20 days
1993	21 days
1994	12 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

78 years with a frost

Across 78 years with a frost, the median last spring frost at Ozark falls on 1 April and the median first autumn frost on 4 November, which leaves a median of 215 days between them.

In 1960 to 1992 the median growing season was 219 days. That is 1 day more than in 1894 to 1940.

Fitted over all years, the growing season changes by -0.8 days per decade at this station.

Frost dates and growing season at Ozark
Measure	Median, all years	Earliest period (1894 to 1940)	Recent period (1960 to 1992)	Recent against earliest	Fitted trend
Last spring frost	1 April	31 March	2 April	2 days later	+0.2 days per decade
First autumn frost	4 November	6 November	5 November	1 day earlier	-0.6 days per decade
Growing days	215 days	218 days	219 days	1 day more	-0.8 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

84 years, 1894 to 1993

A day with at least 79.5 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 165.3 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Ozark: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	79.5 mm (3.1 in)
5 years	103.4 mm (4.1 in)
10 years	118.9 mm (4.7 in)
25 years	138.0 mm (5.4 in)
50 years	151.8 mm (6.0 in)
100 years	165.3 mm (6.5 in)	Longer than the 84 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, 84 years of values from 1894 to 1993.

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: 168.4 mm (6.6 in) in 1927; 152.7 mm (6.0 in) in 1992; 152.4 mm (6.0 in) in 1898.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Ozark, at 1956 and 1986. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1956 ran 0.5 C (1.0 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1986 ran 0.6 C (1.1 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Ozark, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1956	+0.5	+1.0	likely	5
1986	-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.

Download the Data

Data for Ozark standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ozark 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.

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