Marietta 5SW Weather Records (USC00345563)

Record envelope, standing records and threshold days for Marietta 5SW (USC00345563), Oklahoma, United States, with 85 years of record.

Key Facts for Marietta 5SW

Marietta 5SW (USC00345563) is a weather station in Oklahoma, United States at 33.88 latitude and -97.16 longitude, 244 m (802 ft) above sea level.
The station reports from 1937 to 2021, 85 years of record.
1,464 records set at Marietta 5SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Marietta 5SW set a daily record high minimum temperature of 18.9 C (66.0 F) on 13 March 2021.

About the Station

Location: Oklahoma, United States, 33.88 latitude, -97.16 longitude.
Elevation: 244 m (802 ft).
Period of record: 1937 to 2021, 85 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 Marietta 5SW. 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 Marietta 5SW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.4 C (84.9 F)	-19.4 C (-2.9 F)	n/a	n/a
Feb	35.6 C (96.1 F)	-19.4 C (-2.9 F)	n/a	n/a
Mar	36.1 C (97.0 F)	-13.9 C (7.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-6.7 C (19.9 F)	n/a	n/a
May	38.3 C (100.9 F)	-1.7 C (28.9 F)	n/a	n/a
Jun	43.9 C (111.0 F)	9.4 C (48.9 F)	n/a	n/a
Jul	43.3 C (109.9 F)	10.6 C (51.1 F)	n/a	n/a
Aug	44.4 C (111.9 F)	12.2 C (54.0 F)	n/a	n/a
Sep	43.3 C (109.9 F)	0.6 C (33.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-10.6 C (12.9 F)	n/a	n/a
Dec	31.1 C (88.0 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Marietta 5SW still stand. 1956 holds the most, with 41.

Standing records at Marietta 5SW by the year they were set
Year set	Standing records
1940	1
1941	9
1942	4
1943	34
1944	9
1945	16
1946	19
1947	20
1948	33
1949	14
1950	29
1951	30
1952	32
1953	38
1954	35
1955	27
1956	41
1957	16
1958	10
1959	11
1960	9
1961	17
1962	19
1963	25
1964	13
1965	17
1966	24
1967	23
1968	15
1969	8
1970	23
1971	13
1972	22
1973	9
1974	23
1975	11
1976	22
1977	14
1978	14
1979	13
1980	29
1981	9
1982	7
1983	24
1984	20
1985	23
1986	17
1987	7
1988	7
1989	23
1990	11
1991	15
1992	13
1993	9
1994	10
1995	15
1996	20
1997	17
1998	1
1999	16
2000	30
2001	13
2002	17
2003	16
2004	23
2005	29
2006	33
2007	12
2008	22
2009	14
2010	8
2011	35
2012	24
2013	26
2014	28
2015	12
2016	8
2017	16
2018	13
2019	2
2020	16
2021	12

All-Time Record Progression

10 new records

10 all-time records were set at Marietta 5SW between 13 October 1981 and 12 February 2010. Each dot is a new record.

When Marietta 5SW set new all-time records
Date	Kind	Detail
1981-10-13	Record daily precipitation	Record daily precipitation 240.8 mm (9.5 in)
1983-12-16	Record daily snowfall	Record daily snowfall 20.3 cm (8.0 in)
1983-12-16	Record snow depth	Record snow depth 20.3 cm (8.0 in)
1983-12-22	Record low maximum temperature	Record low maximum temperature -9.4 C (15.1 F)
1983-12-24	Record low maximum temperature	Record low maximum temperature -10.0 C (14.0 F)
1989-12-23	Record low minimum temperature	Record low minimum temperature -22.2 C (-8.0 F)
1990-12-22	Record low maximum temperature	Record low maximum temperature -11.1 C (12.0 F)
2009-04-30	Record daily precipitation	Record daily precipitation 325.6 mm (12.8 in)
2010-02-12	Record daily snowfall	Record daily snowfall 23.4 cm (9.2 in)
2010-02-12	Record snow depth	Record snow depth 22.9 cm (9.0 in)

Wettest Day of Each Month

Apr: 325.6 mm (12.8 in)

The wettest day on record for each calendar month at Marietta 5SW. The most was 325.6 mm (12.8 in) on 30 April 2009.

Record daily precipitation for each month at Marietta 5SW
Month	Record daily precipitation (mm)	Date
Jan	104.6 mm (4.1 in)	11 January 2020
Feb	89.7 mm (3.5 in)	9 February 1966
Mar	110.0 mm (4.3 in)	27 March 1977
Apr	325.6 mm (12.8 in)	30 April 2009
May	139.7 mm (5.5 in)	9 May 1993
Jun	133.6 mm (5.3 in)	18 June 2015
Jul	95.5 mm (3.8 in)	31 July 2014
Aug	116.1 mm (4.6 in)	27 August 1974
Sep	167.4 mm (6.6 in)	9 September 2010
Oct	240.8 mm (9.5 in)	13 October 1981
Nov	86.6 mm (3.4 in)	22 November 1961
Dec	95.3 mm (3.8 in)	14 December 1992

Period of Record Coverage

1940 to 2021

82 years of record at Marietta 5SW, 1940 to 2021. 9 years have data for under 90 percent of days and are left out of rankings: 1940, 1941, 1942, 1946, 1998, 2018, 2019, 2020 and others.

Days with data per year at Marietta 5SW
Year	Days with data	Share of year	Complete
1940	39	11%	No
1941	271	74%	No
1942	244	67%	No
1943	357	98%	Yes
1944	347	95%	Yes
1945	356	98%	Yes
1946	327	90%	No
1947	365	100%	Yes
1948	362	99%	Yes
1949	364	100%	Yes
1950	364	100%	Yes
1951	361	99%	Yes
1952	365	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	364	100%	Yes
1958	364	100%	Yes
1959	365	100%	Yes
1960	353	96%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	354	97%	Yes
1968	364	99%	Yes
1969	355	97%	Yes
1970	362	99%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	363	99%	Yes
1974	363	99%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	356	98%	Yes
1996	355	97%	Yes
1997	361	99%	Yes
1998	123	34%	No
1999	365	100%	Yes
2000	364	99%	Yes
2001	362	99%	Yes
2002	365	100%	Yes
2003	364	100%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	359	98%	Yes
2009	363	99%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	364	100%	Yes
2015	336	92%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	208	57%	No
2019	208	57%	No
2020	326	89%	No
2021	101	28%	No

Latest Records

Latest records at Marietta 5SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 March 2021	Marietta 5SW, US	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	54 years	25 of 100 (Routine)
12 March 2021	Marietta 5SW, US	daily high min	18.9 C (66.0 F)	2.2 C (4.0 F)	66 years	30 of 100 (Routine)
11 March 2021	Marietta 5SW, US	daily high min (Tie)	16.7 C (62.1 F)	tie	36 years	4 of 100 (Routine)
20 February 2021	Marietta 5SW, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	73 years	20 of 100 (Routine)
20 February 2021	Marietta 5SW, US	daily low min	-12.8 C (9.0 F)	6.1 C (11.0 F)	15 years	22 of 100 (Routine)
19 February 2021	Marietta 5SW, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	73 years	47 of 100 (Notable)
18 February 2021	Marietta 5SW, US	daily low max	-2.2 C (28.0 F)	1.6 C (2.9 F)	43 years	22 of 100 (Routine)
18 February 2021	Marietta 5SW, US	daily snow depth (Tie)	12.7 cm (5.0 in)	tie	43 years	4 of 100 (Routine)
17 February 2021	Marietta 5SW, US	daily snow depth	15.2 cm (6.0 in)	10.1 cm (4.0 in)	43 years	38 of 100 (Notable)
17 February 2021	Marietta 5SW, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	43 years	25 of 100 (Routine)
17 February 2021	Marietta 5SW, US	daily low max	-6.7 C (19.9 F)	2.8 C (5.0 F)	42 years	23 of 100 (Routine)
17 February 2021	Marietta 5SW, US	daily low min	-18.9 C (-2.0 F)	5.6 C (10.1 F)	14 years	21 of 100 (Routine)
16 February 2021	Marietta 5SW, US	daily snow depth	7.6 cm (3.0 in)	7.6 cm (3.0 in)	73 years	20 of 100 (Routine)
16 February 2021	Marietta 5SW, US	monthly low min	-19.4 C (-2.9 F)	1.6 C (2.9 F)	42 years	32 of 100 (Routine)
16 February 2021	Marietta 5SW, US	monthly low max	-10.0 C (14.0 F)	0.6 C (1.1 F)	0 years	18 of 100 (Routine)
15 February 2021	Marietta 5SW, US	monthly low max	-9.4 C (15.1 F)	1.6 C (2.9 F)	32 years	29 of 100 (Routine)
15 February 2021	Marietta 5SW, US	daily low min	-15.0 C (5.0 F)	7.8 C (14.0 F)	19 years	26 of 100 (Routine)
14 February 2021	Marietta 5SW, US	daily snow depth (Tie)	2.5 cm (1.0 in)	tie	70 years	7 of 100 (Routine)
13 February 2021	Marietta 5SW, US	daily low max	-4.4 C (24.1 F)	5.5 C (9.9 F)	11 years	18 of 100 (Routine)
12 February 2021	Marietta 5SW, US	daily low max	-3.3 C (26.1 F)	1.6 C (2.9 F)	63 years	28 of 100 (Routine)

Climate Trend

69 complete years, 1943 to 2017

One stripe for each of 69 complete years at Marietta 5SW, 1943 to 2017. Blue stripes are years cooler than the station's own mean of 17.2 C (63.0 F); red stripes are warmer. The coolest year was 2002, at 15.2 C (59.4 F), and the warmest was 1954, at 19.1 C (66.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Marietta 5SW as warming stripes, 1943 to 2017
Year	Annual mean temperature	Difference from the station mean
1943	18.5 C	+1.26 C
1945	17.4 C	+0.15 C
1947	17.5 C	+0.26 C
1949	17.5 C	+0.28 C
1950	17.4 C	+0.12 C
1951	17.7 C	+0.42 C
1952	18.3 C	+1.08 C
1953	18.1 C	+0.85 C
1954	19.1 C	+1.88 C
1955	18.1 C	+0.84 C
1956	19.0 C	+1.78 C
1957	17.3 C	+0.09 C
1958	17.0 C	-0.27 C
1959	17.3 C	+0.03 C
1960	16.8 C	-0.41 C
1961	17.0 C	-0.29 C
1962	17.4 C	+0.19 C
1963	18.2 C	+0.93 C
1964	17.7 C	+0.47 C
1965	17.9 C	+0.62 C
1966	16.8 C	-0.47 C
1967	17.6 C	+0.31 C
1968	16.3 C	-0.97 C
1969	16.9 C	-0.33 C
1970	17.0 C	-0.25 C
1971	17.1 C	-0.14 C
1972	17.1 C	-0.12 C
1973	16.7 C	-0.56 C
1974	17.2 C	-0.03 C
1975	16.7 C	-0.56 C
1976	16.4 C	-0.81 C
1977	17.8 C	+0.60 C
1978	16.7 C	-0.57 C
1979	16.0 C	-1.27 C
1980	17.9 C	+0.67 C
1981	17.5 C	+0.25 C
1982	17.5 C	+0.26 C
1983	16.6 C	-0.64 C
1984	17.7 C	+0.50 C
1985	17.5 C	+0.28 C
1986	18.3 C	+1.10 C
1987	17.6 C	+0.37 C
1988	17.6 C	+0.39 C
1989	16.9 C	-0.38 C
1990	18.2 C	+1.00 C
1991	17.9 C	+0.67 C
1992	17.4 C	+0.19 C
1993	17.1 C	-0.12 C
1994	17.6 C	+0.39 C
1995	17.8 C	+0.55 C
1996	17.6 C	+0.32 C
1997	16.8 C	-0.48 C
1999	17.6 C	+0.35 C
2000	16.8 C	-0.44 C
2001	16.2 C	-1.00 C
2002	15.2 C	-2.00 C
2003	16.1 C	-1.16 C
2005	16.6 C	-0.64 C
2006	17.4 C	+0.19 C
2007	16.3 C	-0.90 C
2008	16.0 C	-1.24 C
2009	16.3 C	-0.94 C
2010	16.8 C	-0.48 C
2011	17.4 C	+0.20 C
2012	17.8 C	+0.53 C
2013	15.9 C	-1.37 C
2014	15.7 C	-1.51 C
2016	17.4 C	+0.19 C
2017	17.3 C	+0.09 C

The annual mean temperature here has fallen by 0.2 C (0.1 to 0.2) per decade over 1943 to 2017. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 69 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Marietta 5SW
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.2 C (-0.2 to -0.1) per decade	-0.3 F (-0.4 to -0.1) per decade	1943 to 2017	69	Fall
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.3 F (-0.5 to -0.1) per decade	1943 to 2017	69	Fall
Mean daily minimum	-0.1 C (-0.2 to -0.1) per decade	-0.3 F (-0.4 to -0.1) per decade	1943 to 2017	69	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

1937 to 2021

Yearly extremes at Marietta 5SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1956	40.6 C (105.1 F)	82
Coldest night (TNn)	-22.2 C (-8.0 F)	1989	-13.0 C (8.5 F)	82
Wettest day (Rx1day)	325.6 mm (12.8 in)	2009	75.2 mm (3.0 in)	85
Wettest five days (Rx5day)	519.2 mm (20.4 in)	1981	115.7 mm (4.6 in)	85
Longest dry spell (CDD)	89 days	1950	30 days	85

Hottest day (TXx)

The hottest day of the year at Marietta 5SW, 1937 to 2021. The record is 44.4 C (111.9 F) in 1956, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Marietta 5SW by year
Year	Hottest day (TXx)
1937	n/a
1938	n/a
1939	n/a
1940	23.3 C (73.9 F)
1941	41.7 C (107.1 F)
1942	40.6 C (105.1 F)
1943	43.9 C (111.0 F)
1944	40.6 C (105.1 F)
1945	40.0 C (104.0 F)
1946	41.7 C (107.1 F)
1947	42.8 C (109.0 F)
1948	42.2 C (108.0 F)
1949	40.0 C (104.0 F)
1950	36.7 C (98.1 F)
1951	42.2 C (108.0 F)
1952	41.7 C (107.1 F)
1953	42.2 C (108.0 F)
1954	43.3 C (109.9 F)
1955	40.6 C (105.1 F)
1956	44.4 C (111.9 F)
1957	40.6 C (105.1 F)
1958	39.4 C (102.9 F)
1959	38.9 C (102.0 F)
1960	38.9 C (102.0 F)
1961	38.9 C (102.0 F)
1962	40.6 C (105.1 F)
1963	41.7 C (107.1 F)
1964	43.3 C (109.9 F)
1965	39.4 C (102.9 F)
1966	40.0 C (104.0 F)
1967	40.0 C (104.0 F)
1968	38.9 C (102.0 F)
1969	39.4 C (102.9 F)
1970	41.7 C (107.1 F)
1971	41.1 C (106.0 F)
1972	40.6 C (105.1 F)
1973	36.1 C (97.0 F)
1974	41.1 C (106.0 F)
1975	36.7 C (98.1 F)
1976	37.8 C (100.0 F)
1977	41.1 C (106.0 F)
1978	41.1 C (106.0 F)
1979	38.3 C (100.9 F)
1980	43.9 C (111.0 F)
1981	40.0 C (104.0 F)
1982	39.4 C (102.9 F)
1983	40.0 C (104.0 F)
1984	41.1 C (106.0 F)
1985	41.7 C (107.1 F)
1986	43.3 C (109.9 F)
1987	38.9 C (102.0 F)
1988	41.1 C (106.0 F)
1989	39.4 C (102.9 F)
1990	40.6 C (105.1 F)
1991	38.3 C (100.9 F)
1992	35.6 C (96.1 F)
1993	40.0 C (104.0 F)
1994	38.9 C (102.0 F)
1995	41.1 C (106.0 F)
1996	40.6 C (105.1 F)
1997	41.1 C (106.0 F)
1998	35.6 C (96.1 F)
1999	41.7 C (107.1 F)
2000	43.3 C (109.9 F)
2001	39.4 C (102.9 F)
2002	36.7 C (98.1 F)
2003	41.7 C (107.1 F)
2004	36.7 C (98.1 F)
2005	38.3 C (100.9 F)
2006	41.7 C (107.1 F)
2007	37.8 C (100.0 F)
2008	40.6 C (105.1 F)
2009	39.4 C (102.9 F)
2010	40.6 C (105.1 F)
2011	44.4 C (111.9 F)
2012	42.8 C (109.0 F)
2013	41.7 C (107.1 F)
2014	40.6 C (105.1 F)
2015	40.0 C (104.0 F)
2016	39.4 C (102.9 F)
2017	38.3 C (100.9 F)
2018	38.9 C (102.0 F)
2019	34.4 C (93.9 F)
2020	39.4 C (102.9 F)
2021	27.8 C (82.0 F)

Coldest night (TNn)

The coldest night of the year at Marietta 5SW, 1937 to 2021. The record is -22.2 C (-8.0 F) in 1989, marked on the chart; the median year is -13.0 C (8.5 F).

Coldest night (TNn) at Marietta 5SW by year
Year	Coldest night (TNn)
1937	n/a
1938	n/a
1939	n/a
1940	-4.4 C (24.1 F)
1941	-6.1 C (21.0 F)
1942	-5.0 C (23.0 F)
1943	-17.8 C (0.0 F)
1944	-12.2 C (10.0 F)
1945	-12.2 C (10.0 F)
1946	-10.0 C (14.0 F)
1947	-19.4 C (-2.9 F)
1948	-13.9 C (7.0 F)
1949	-15.6 C (3.9 F)
1950	-13.3 C (8.1 F)
1951	-16.1 C (3.0 F)
1952	-7.2 C (19.0 F)
1953	-10.0 C (14.0 F)
1954	-12.8 C (9.0 F)
1955	-10.6 C (12.9 F)
1956	-11.1 C (12.0 F)
1957	-10.6 C (12.9 F)
1958	-14.4 C (6.1 F)
1959	-15.6 C (3.9 F)
1960	-12.2 C (10.0 F)
1961	-11.7 C (10.9 F)
1962	-16.7 C (1.9 F)
1963	-16.1 C (3.0 F)
1964	-14.4 C (6.1 F)
1965	-11.1 C (12.0 F)
1966	-17.8 C (0.0 F)
1967	-11.1 C (12.0 F)
1968	-14.4 C (6.1 F)
1969	-11.1 C (12.0 F)
1970	-12.8 C (9.0 F)
1971	-14.4 C (6.1 F)
1972	-14.4 C (6.1 F)
1973	-14.4 C (6.1 F)
1974	-11.1 C (12.0 F)
1975	-12.2 C (10.0 F)
1976	-15.6 C (3.9 F)
1977	-18.3 C (-0.9 F)
1978	-17.8 C (0.0 F)
1979	-15.6 C (3.9 F)
1980	-13.9 C (7.0 F)
1981	-15.0 C (5.0 F)
1982	-16.1 C (3.0 F)
1983	-17.8 C (0.0 F)
1984	-16.1 C (3.0 F)
1985	-16.1 C (3.0 F)
1986	-10.6 C (12.9 F)
1987	-8.3 C (17.1 F)
1988	-13.9 C (7.0 F)
1989	-22.2 C (-8.0 F)
1990	-13.9 C (7.0 F)
1991	-6.1 C (21.0 F)
1992	-10.0 C (14.0 F)
1993	-9.4 C (15.1 F)
1994	-10.6 C (12.9 F)
1995	-11.1 C (12.0 F)
1996	-15.6 C (3.9 F)
1997	-11.1 C (12.0 F)
1998	-10.0 C (14.0 F)
1999	-12.2 C (10.0 F)
2000	-8.9 C (16.0 F)
2001	-10.6 C (12.9 F)
2002	-13.3 C (8.1 F)
2003	-11.1 C (12.0 F)
2004	-13.9 C (7.0 F)
2005	-17.2 C (1.0 F)
2006	-11.1 C (12.0 F)
2007	-13.3 C (8.1 F)
2008	-11.1 C (12.0 F)
2009	-14.4 C (6.1 F)
2010	-13.9 C (7.0 F)
2011	-13.9 C (7.0 F)
2012	-12.8 C (9.0 F)
2013	-10.6 C (12.9 F)
2014	-14.4 C (6.1 F)
2015	-11.1 C (12.0 F)
2016	-12.2 C (10.0 F)
2017	-15.6 C (3.9 F)
2018	-16.1 C (3.0 F)
2019	-9.4 C (15.1 F)
2020	-6.1 C (21.0 F)
2021	-19.4 C (-2.9 F)

Wettest day (Rx1day)

The wettest day of the year at Marietta 5SW, 1937 to 2021. The record is 325.6 mm (12.8 in) in 2009, marked on the chart; the median year is 75.2 mm (3.0 in).

Wettest day (Rx1day) at Marietta 5SW by year
Year	Wettest day (Rx1day)
1937	148.1 mm (5.8 in)
1938	57.7 mm (2.3 in)
1939	57.4 mm (2.3 in)
1940	53.8 mm (2.1 in)
1941	117.3 mm (4.6 in)
1942	73.7 mm (2.9 in)
1943	123.2 mm (4.9 in)
1944	59.4 mm (2.3 in)
1945	101.6 mm (4.0 in)
1946	58.9 mm (2.3 in)
1947	72.4 mm (2.9 in)
1948	57.2 mm (2.3 in)
1949	79.0 mm (3.1 in)
1950	127.0 mm (5.0 in)
1951	115.6 mm (4.6 in)
1952	53.3 mm (2.1 in)
1953	82.8 mm (3.3 in)
1954	68.6 mm (2.7 in)
1955	75.4 mm (3.0 in)
1956	35.3 mm (1.4 in)
1957	79.2 mm (3.1 in)
1958	47.0 mm (1.9 in)
1959	102.9 mm (4.1 in)
1960	54.6 mm (2.1 in)
1961	86.6 mm (3.4 in)
1962	76.2 mm (3.0 in)
1963	49.5 mm (1.9 in)
1964	69.3 mm (2.7 in)
1965	60.7 mm (2.4 in)
1966	91.2 mm (3.6 in)
1967	91.4 mm (3.6 in)
1968	53.3 mm (2.1 in)
1969	55.4 mm (2.2 in)
1970	62.7 mm (2.5 in)
1971	43.2 mm (1.7 in)
1972	65.3 mm (2.6 in)
1973	113.0 mm (4.4 in)
1974	132.1 mm (5.2 in)
1975	106.9 mm (4.2 in)
1976	90.9 mm (3.6 in)
1977	110.0 mm (4.3 in)
1978	47.0 mm (1.9 in)
1979	75.7 mm (3.0 in)
1980	143.5 mm (5.6 in)
1981	240.8 mm (9.5 in)
1982	70.1 mm (2.8 in)
1983	55.1 mm (2.2 in)
1984	49.5 mm (1.9 in)
1985	116.6 mm (4.6 in)
1986	94.0 mm (3.7 in)
1987	92.2 mm (3.6 in)
1988	48.8 mm (1.9 in)
1989	68.6 mm (2.7 in)
1990	108.0 mm (4.3 in)
1991	104.1 mm (4.1 in)
1992	95.3 mm (3.8 in)
1993	139.7 mm (5.5 in)
1994	86.4 mm (3.4 in)
1995	54.4 mm (2.1 in)
1996	70.4 mm (2.8 in)
1997	51.1 mm (2.0 in)
1998	36.3 mm (1.4 in)
1999	76.5 mm (3.0 in)
2000	71.9 mm (2.8 in)
2001	61.7 mm (2.4 in)
2002	85.6 mm (3.4 in)
2003	75.2 mm (3.0 in)
2004	59.4 mm (2.3 in)
2005	53.6 mm (2.1 in)
2006	234.7 mm (9.2 in)
2007	56.9 mm (2.2 in)
2008	60.2 mm (2.4 in)
2009	325.6 mm (12.8 in)
2010	167.4 mm (6.6 in)
2011	44.2 mm (1.7 in)
2012	84.8 mm (3.3 in)
2013	58.7 mm (2.3 in)
2014	95.5 mm (3.8 in)
2015	133.6 mm (5.3 in)
2016	98.6 mm (3.9 in)
2017	92.2 mm (3.6 in)
2018	65.0 mm (2.6 in)
2019	65.3 mm (2.6 in)
2020	142.7 mm (5.6 in)
2021	39.4 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Marietta 5SW, 1937 to 2021. The record is 519.2 mm (20.4 in) in 1981, marked on the chart; the median year is 115.7 mm (4.6 in).

Wettest five days (Rx5day) at Marietta 5SW by year
Year	Wettest five days (Rx5day)
1937	179.8 mm (7.1 in)
1938	135.9 mm (5.4 in)
1939	63.0 mm (2.5 in)
1940	123.0 mm (4.8 in)
1941	276.4 mm (10.9 in)
1942	158.0 mm (6.2 in)
1943	154.7 mm (6.1 in)
1944	83.3 mm (3.3 in)
1945	165.9 mm (6.5 in)
1946	135.3 mm (5.3 in)
1947	85.2 mm (3.4 in)
1948	115.7 mm (4.6 in)
1949	110.1 mm (4.3 in)
1950	154.9 mm (6.1 in)
1951	159.0 mm (6.3 in)
1952	88.6 mm (3.5 in)
1953	96.5 mm (3.8 in)
1954	131.6 mm (5.2 in)
1955	122.2 mm (4.8 in)
1956	68.1 mm (2.7 in)
1957	163.0 mm (6.4 in)
1958	95.5 mm (3.8 in)
1959	165.1 mm (6.5 in)
1960	90.4 mm (3.6 in)
1961	89.7 mm (3.5 in)
1962	132.0 mm (5.2 in)
1963	72.7 mm (2.9 in)
1964	112.0 mm (4.4 in)
1965	97.6 mm (3.8 in)
1966	131.6 mm (5.2 in)
1967	104.9 mm (4.1 in)
1968	118.2 mm (4.7 in)
1969	96.7 mm (3.8 in)
1970	122.4 mm (4.8 in)
1971	89.9 mm (3.5 in)
1972	98.1 mm (3.9 in)
1973	133.3 mm (5.2 in)
1974	169.6 mm (6.7 in)
1975	189.5 mm (7.5 in)
1976	97.5 mm (3.8 in)
1977	123.2 mm (4.9 in)
1978	84.1 mm (3.3 in)
1979	102.6 mm (4.0 in)
1980	205.4 mm (8.1 in)
1981	519.2 mm (20.4 in)
1982	99.5 mm (3.9 in)
1983	71.3 mm (2.8 in)
1984	76.3 mm (3.0 in)
1985	140.2 mm (5.5 in)
1986	116.3 mm (4.6 in)
1987	165.3 mm (6.5 in)
1988	87.0 mm (3.4 in)
1989	141.9 mm (5.6 in)
1990	142.5 mm (5.6 in)
1991	162.0 mm (6.4 in)
1992	105.7 mm (4.2 in)
1993	191.3 mm (7.5 in)
1994	131.5 mm (5.2 in)
1995	111.6 mm (4.4 in)
1996	133.9 mm (5.3 in)
1997	81.5 mm (3.2 in)
1998	69.4 mm (2.7 in)
1999	103.5 mm (4.1 in)
2000	94.0 mm (3.7 in)
2001	121.7 mm (4.8 in)
2002	113.6 mm (4.5 in)
2003	81.8 mm (3.2 in)
2004	110.4 mm (4.3 in)
2005	111.2 mm (4.4 in)
2006	273.1 mm (10.8 in)
2007	159.7 mm (6.3 in)
2008	88.9 mm (3.5 in)
2009	327.9 mm (12.9 in)
2010	198.1 mm (7.8 in)
2011	75.7 mm (3.0 in)
2012	91.4 mm (3.6 in)
2013	87.8 mm (3.5 in)
2014	107.0 mm (4.2 in)
2015	313.0 mm (12.3 in)
2016	126.7 mm (5.0 in)
2017	97.8 mm (3.9 in)
2018	156.6 mm (6.2 in)
2019	86.7 mm (3.4 in)
2020	175.0 mm (6.9 in)
2021	53.6 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Marietta 5SW, 1937 to 2021. The record is 89 days in 1950, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Marietta 5SW by year
Year	Longest dry spell (CDD)
1937	22 days
1938	52 days
1939	47 days
1940	25 days
1941	18 days
1942	25 days
1943	37 days
1944	30 days
1945	41 days
1946	20 days
1947	30 days
1948	44 days
1949	32 days
1950	89 days
1951	34 days
1952	47 days
1953	23 days
1954	45 days
1955	64 days
1956	34 days
1957	28 days
1958	22 days
1959	26 days
1960	19 days
1961	19 days
1962	28 days
1963	49 days
1964	52 days
1965	25 days
1966	39 days
1967	45 days
1968	22 days
1969	32 days
1970	32 days
1971	44 days
1972	31 days
1973	19 days
1974	30 days
1975	18 days
1976	21 days
1977	27 days
1978	33 days
1979	24 days
1980	37 days
1981	22 days
1982	36 days
1983	26 days
1984	18 days
1985	29 days
1986	43 days
1987	22 days
1988	26 days
1989	33 days
1990	20 days
1991	31 days
1992	35 days
1993	37 days
1994	18 days
1995	44 days
1996	54 days
1997	21 days
1998	16 days
1999	47 days
2000	57 days
2001	43 days
2002	28 days
2003	36 days
2004	23 days
2005	36 days
2006	49 days
2007	22 days
2008	29 days
2009	30 days
2010	26 days
2011	26 days
2012	32 days
2013	27 days
2014	27 days
2015	41 days
2016	36 days
2017	37 days
2018	39 days
2019	28 days
2020	29 days
2021	19 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

69 years with a frost

Across 69 years with a frost, the median last spring frost at Marietta 5SW falls on 30 March and the median first autumn frost on 5 November, which leaves a median of 224 days between them.

In 1985 to 2017 the median growing season was 223 days. That is 1 day fewer than in 1943 to 1975.

Fitted over all years, the growing season changes by -1.7 days per decade at this station.

Frost dates and growing season at Marietta 5SW
Measure	Median, all years	Earliest period (1943 to 1975)	Recent period (1985 to 2017)	Recent against earliest	Fitted trend
Last spring frost	30 March	1 April	31 March	1 day earlier	+1.0 days per decade
First autumn frost	5 November	7 November	4 November	3 days earlier	-0.7 days per decade
Growing days	224 days	224 days	223 days	1 day fewer	-1.7 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, 1938 to 2020

A day with at least 75.0 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 275.9 mm (10.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Marietta 5SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	75.0 mm (3.0 in)
5 years	108.3 mm (4.3 in)
10 years	136.9 mm (5.4 in)
25 years	182.4 mm (7.2 in)
50 years	224.9 mm (8.9 in)
100 years	275.9 mm (10.9 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 1938 to 2020.

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: 325.6 mm (12.8 in) in 2009; 240.8 mm (9.5 in) in 1981; 234.7 mm (9.2 in) in 2006.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Marietta 5SW, at 1968. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1968 ran 0.5 C (0.8 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Marietta 5SW, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1968	-0.5	-0.8	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

2001 to 2017 against 1961 to 1990

Over 2001 to 2017, Marietta 5SW had a mean temperature of 16.6 C (61.8 F) and 902.9 mm (35.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Ada (United States, 110 km away), Shawnee (United States, 166 km away) and Holdenville 2SSE (United States, 149 km away).

Climate twins of Marietta 5SW: stations whose 1961 to 1990 climate is closest to its 2001 to 2017 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Ada	United States	110 km (68 mi)	16.5 C (61.6 F)	993.3 mm (39.1 in)	0.57
Shawnee	United States	166 km (103 mi)	16.2 C (61.2 F)	916.4 mm (36.1 in)	0.64
Holdenville 2SSE	United States	149 km (93 mi)	16.4 C (61.5 F)	967.4 mm (38.1 in)	0.68

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 Marietta 5SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Marietta 5SW 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 2026-10-13 (13 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).