Mutual Weather Records (USC00346139)

Record envelope, standing records and threshold days for Mutual (USC00346139), Oklahoma, United States, with 109 years of record.

Key Facts for Mutual

Mutual (USC00346139) is a weather station in Oklahoma, United States at 36.23 latitude and -99.17 longitude, 576 m (1,890 ft) above sea level.
The station reports from 1915 to 2023, 109 years of record.
1,464 records set at Mutual still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mutual set a daily record precipitation of 25.4 mm (1.0 in) on 26 November 2023.

About the Station

Location: Oklahoma, United States, 36.23 latitude, -99.17 longitude.
Elevation: 576 m (1,890 ft).
Period of record: 1915 to 2023, 109 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 Mutual. 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 Mutual, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.3 C (82.9 F)	-28.3 C (-18.9 F)	n/a	n/a
Feb	33.3 C (91.9 F)	-25.0 C (-13.0 F)	n/a	n/a
Mar	34.4 C (93.9 F)	-21.1 C (-6.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	-8.9 C (16.0 F)	n/a	n/a
May	40.6 C (105.1 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	46.1 C (115.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	46.1 C (115.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	46.1 C (115.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	43.3 C (109.9 F)	-0.6 C (30.9 F)	n/a	n/a
Oct	38.3 C (100.9 F)	-10.6 C (12.9 F)	n/a	n/a
Nov	32.2 C (90.0 F)	-16.7 C (1.9 F)	n/a	n/a
Dec	31.1 C (88.0 F)	-24.4 C (-11.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mutual still stand. 1936 holds the most, with 37.

Standing records at Mutual by the year they were set
Year set	Standing records
1915	26
1916	24
1917	26
1918	35
1919	22
1920	12
1921	19
1922	20
1923	9
1924	20
1925	13
1926	10
1927	16
1928	20
1929	8
1935	19
1936	37
1937	7
1938	9
1939	22
1940	11
1941	4
1942	9
1943	17
1944	8
1945	13
1946	12
1947	15
1948	14
1949	5
1950	17
1951	15
1952	14
1953	34
1954	17
1955	21
1956	17
1957	9
1958	10
1959	12
1960	13
1961	4
1962	28
1963	18
1964	11
1965	21
1966	22
1967	12
1968	9
1969	11
1970	16
1971	9
1972	19
1973	11
1974	6
1975	7
1976	14
1977	10
1978	15
1979	15
1980	14
1981	17
1982	7
1983	18
1984	12
1985	16
1986	11
1987	7
1988	7
1989	24
1990	13
1991	16
1992	10
1993	15
1994	9
1995	12
1996	20
1997	11
1998	10
1999	7
2000	19
2001	6
2002	9
2003	12
2004	14
2005	11
2006	24
2007	10
2008	7
2009	9
2010	5
2011	19
2012	15
2013	16
2014	19
2015	13
2016	5
2017	9
2018	18
2019	12
2020	16
2021	20
2022	1

All-Time Record Progression

6 new records

6 all-time records were set at Mutual between 15 June 1953 and 22 December 1983. Each dot is a new record.

When Mutual set new all-time records
Date	Kind	Detail
1953-06-15	Record high minimum temperature	Record high minimum temperature 31.7 C (89.1 F)
1971-02-21	Record daily snowfall	Record daily snowfall 35.6 cm (14.0 in)
1972-07-08	Record daily precipitation	Record daily precipitation 231.9 mm (9.1 in)
1982-02-05	Record low maximum temperature	Record low maximum temperature -14.4 C (6.1 F)
1983-12-20	Record low maximum temperature	Record low maximum temperature -15.0 C (5.0 F)
1983-12-22	Record low maximum temperature	Record low maximum temperature -16.1 C (3.0 F)

Wettest Day of Each Month

Jul: 231.9 mm (9.1 in)

The wettest day on record for each calendar month at Mutual. The most was 231.9 mm (9.1 in) on 8 July 1972.

Record daily precipitation for each month at Mutual
Month	Record daily precipitation (mm)	Date
Jan	46.5 mm (1.8 in)	17 January 1990
Feb	57.7 mm (2.3 in)	4 February 1964
Mar	100.6 mm (4.0 in)	4 March 1983
Apr	109.7 mm (4.3 in)	5 April 1939
May	102.1 mm (4.0 in)	21 May 2019
Jun	107.7 mm (4.2 in)	9 June 1941
Jul	231.9 mm (9.1 in)	8 July 1972
Aug	135.9 mm (5.4 in)	28 August 1974
Sep	210.8 mm (8.3 in)	12 September 2008
Oct	130.0 mm (5.1 in)	6 October 1946
Nov	81.3 mm (3.2 in)	1 November 1998
Dec	60.7 mm (2.4 in)	20 December 2006

Period of Record Coverage

1915 to 2022

103 years of record at Mutual, 1915 to 2022. 12 years have data for under 90 percent of days and are left out of rankings: 1923, 1925, 1937, 1943, 1948, 1949, 1950, 1959 and others.

Days with data per year at Mutual
Year	Days with data	Share of year	Complete
1915	363	99%	Yes
1916	363	99%	Yes
1917	363	99%	Yes
1918	365	100%	Yes
1919	349	96%	Yes
1920	363	99%	Yes
1921	364	100%	Yes
1922	362	99%	Yes
1923	323	88%	No
1924	359	98%	Yes
1925	290	79%	No
1926	364	100%	Yes
1927	363	99%	Yes
1928	342	93%	Yes
1929	365	100%	Yes
1935	359	98%	Yes
1936	343	94%	Yes
1937	300	82%	No
1938	355	97%	Yes
1939	361	99%	Yes
1940	344	94%	Yes
1941	353	97%	Yes
1942	357	98%	Yes
1943	327	90%	No
1944	357	98%	Yes
1945	359	98%	Yes
1946	361	99%	Yes
1947	329	90%	Yes
1948	271	74%	No
1949	309	85%	No
1950	259	71%	No
1951	361	99%	Yes
1952	358	98%	Yes
1953	362	99%	Yes
1954	358	98%	Yes
1955	362	99%	Yes
1956	366	100%	Yes
1957	358	98%	Yes
1958	362	99%	Yes
1959	302	83%	No
1960	356	97%	Yes
1961	358	98%	Yes
1962	355	97%	Yes
1963	251	69%	No
1964	333	91%	Yes
1965	363	99%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	328	90%	No
1969	365	100%	Yes
1970	339	93%	Yes
1971	364	100%	Yes
1972	357	98%	Yes
1973	356	98%	Yes
1974	361	99%	Yes
1975	293	80%	No
1976	362	99%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	363	99%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	362	99%	Yes
1986	360	99%	Yes
1987	334	92%	Yes
1988	366	100%	Yes
1989	364	100%	Yes
1990	363	99%	Yes
1991	361	99%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	364	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	364	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	365	100%	Yes
2001	364	100%	Yes
2002	365	100%	Yes
2003	364	100%	Yes
2004	360	98%	Yes
2005	365	100%	Yes
2006	357	98%	Yes
2007	363	99%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	363	99%	Yes
2014	359	98%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	362	99%	Yes
2018	361	99%	Yes
2019	358	98%	Yes
2020	365	100%	Yes
2021	364	100%	Yes
2022	68	19%	No

Latest Records

Latest records at Mutual
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 November 2023	Mutual, US	daily rain	25.4 mm (1.0 in)	12.4 mm (0.5 in)	12 years	23 of 100 (Routine)
26 November 2023	Mutual, US	monthly snowfall (Tie)	17.8 cm (7.0 in)	tie	51 years	8 of 100 (Routine)
26 November 2023	Mutual, US	monthly snow depth (Tie)	17.8 cm (7.0 in)	tie	51 years	8 of 100 (Routine)
15 July 2023	Mutual, US	daily rain	32.0 mm (1.3 in)	10.9 mm (0.4 in)	9 years	18 of 100 (Routine)
9 July 2023	Mutual, US	daily rain	36.3 mm (1.4 in)	3.0 mm (0.12 in)	34 years	21 of 100 (Routine)
7 July 2023	Mutual, US	daily rain	56.6 mm (2.2 in)	13.4 mm (0.5 in)	8 years	20 of 100 (Routine)
25 January 2023	Mutual, US	daily snowfall	10.2 cm (4.0 in)	8.9 cm (3.5 in)	44 years	44 of 100 (Notable)
15 November 2022	Mutual, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	104 years	52 of 100 (Notable)
15 November 2022	Mutual, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	72 years	20 of 100 (Routine)
2 September 2022	Mutual, US	daily rain	29.5 mm (1.2 in)	4.9 mm (0.19 in)	48 years	26 of 100 (Routine)
23 February 2022	Mutual, US	daily low min	-13.9 C (7.0 F)	0.6 C (1.1 F)	51 years	26 of 100 (Routine)
27 December 2021	Mutual, US	daily high max	26.7 C (80.1 F)	3.9 C (7.0 F)	92 years	42 of 100 (Notable)
25 December 2021	Mutual, US	daily high max	25.0 C (77.0 F)	2.8 C (5.0 F)	99 years	42 of 100 (Notable)
16 December 2021	Mutual, US	daily high max	26.1 C (79.0 F)	3.3 C (5.9 F)	82 years	38 of 100 (Notable)
6 December 2021	Mutual, US	daily high max (Tie)	23.3 C (73.9 F)	tie	82 years	8 of 100 (Routine)
3 December 2021	Mutual, US	daily high max	26.1 C (79.0 F)	0.5 C (0.9 F)	104 years	40 of 100 (Notable)
30 November 2021	Mutual, US	daily high max	27.2 C (81.0 F)	1.6 C (2.9 F)	7 years	14 of 100 (Routine)
10 October 2021	Mutual, US	daily high max (Tie)	35.0 C (95.0 F)	tie	56 years	6 of 100 (Routine)
20 July 2021	Mutual, US	daily low min (Tie)	12.2 C (54.0 F)	tie	76 years	8 of 100 (Routine)
18 July 2021	Mutual, US	daily low min	13.9 C (57.0 F)	0.5 C (0.9 F)	7 years	13 of 100 (Routine)

Climate Trend

84 complete years, 1915 to 2021

One stripe for each of 84 complete years at Mutual, 1915 to 2021. Blue stripes are years cooler than the station's own mean of 14.5 C (58.2 F); red stripes are warmer. The coolest year was 1979, at 13.0 C (55.3 F), and the warmest was 1954, at 16.3 C (61.4 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Mutual as warming stripes, 1915 to 2021
Year	Annual mean temperature	Difference from the station mean
1915	13.4 C	-1.12 C
1916	15.2 C	+0.67 C
1917	14.3 C	-0.23 C
1918	14.9 C	+0.33 C
1919	14.0 C	-0.55 C
1920	14.5 C	-0.01 C
1921	16.0 C	+1.48 C
1922	15.6 C	+1.00 C
1924	14.0 C	-0.58 C
1926	14.4 C	-0.13 C
1927	14.8 C	+0.29 C
1929	14.5 C	-0.03 C
1935	15.8 C	+1.27 C
1938	15.5 C	+0.90 C
1939	16.3 C	+1.70 C
1940	14.9 C	+0.30 C
1941	14.7 C	+0.19 C
1942	14.7 C	+0.17 C
1944	15.1 C	+0.54 C
1945	14.7 C	+0.10 C
1946	16.0 C	+1.48 C
1951	14.5 C	-0.02 C
1953	16.3 C	+1.77 C
1954	16.3 C	+1.78 C
1955	14.8 C	+0.20 C
1956	15.7 C	+1.19 C
1957	14.0 C	-0.56 C
1958	14.2 C	-0.32 C
1960	14.1 C	-0.43 C
1961	14.3 C	-0.28 C
1962	15.4 C	+0.84 C
1965	15.5 C	+0.97 C
1966	14.7 C	+0.10 C
1967	15.1 C	+0.56 C
1969	15.0 C	+0.43 C
1971	15.4 C	+0.80 C
1972	14.8 C	+0.22 C
1973	14.4 C	-0.15 C
1974	14.2 C	-0.31 C
1976	14.2 C	-0.32 C
1977	15.0 C	+0.43 C
1978	13.7 C	-0.86 C
1979	13.0 C	-1.59 C
1980	14.7 C	+0.13 C
1981	15.3 C	+0.71 C
1982	13.6 C	-0.93 C
1983	13.3 C	-1.27 C
1984	14.0 C	-0.57 C
1985	13.3 C	-1.27 C
1986	14.8 C	+0.21 C
1988	13.4 C	-1.13 C
1989	13.3 C	-1.26 C
1990	14.7 C	+0.11 C
1991	14.6 C	+0.04 C
1992	14.1 C	-0.47 C
1993	13.1 C	-1.44 C
1994	14.2 C	-0.33 C
1995	13.6 C	-0.97 C
1996	13.5 C	-1.08 C
1997	13.5 C	-1.06 C
1998	15.2 C	+0.65 C
1999	14.9 C	+0.31 C
2000	14.4 C	-0.19 C
2001	15.1 C	+0.52 C
2002	13.9 C	-0.67 C
2003	14.3 C	-0.22 C
2004	14.5 C	-0.08 C
2005	14.6 C	+0.03 C
2006	15.0 C	+0.48 C
2007	13.9 C	-0.70 C
2008	13.8 C	-0.72 C
2009	14.3 C	-0.29 C
2010	14.4 C	-0.15 C
2011	14.9 C	+0.35 C
2012	15.7 C	+1.10 C
2013	13.4 C	-1.19 C
2014	13.7 C	-0.82 C
2015	15.0 C	+0.40 C
2016	15.3 C	+0.75 C
2017	14.9 C	+0.37 C
2018	14.2 C	-0.35 C
2019	13.6 C	-0.92 C
2020	14.4 C	-0.12 C
2021	14.0 C	-0.55 C

The annual mean temperature here has fallen by 0.08 C (0.03 to 0.13) per decade over 1915 to 2021. In Fahrenheit: 0.1 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 84 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mutual
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.08 C (-0.13 to -0.03) per decade	-0.1 F (-0.2 to -0.1) per decade	1915 to 2021	84	Fall
Mean daily maximum	-0.1 C (-0.2 to -0.1) per decade	-0.2 F (-0.4 to -0.1) per decade	1915 to 2021	84	Fall
Mean daily minimum	-0.03 C (-0.08 to 0.02) per decade	-0.05 F (-0.14 to 0.03) per decade	1915 to 2021	84	Not clearly different from zero

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

1915 to 2023

Yearly extremes at Mutual: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1917	41.7 C (107.1 F)	103
Coldest night (TNn)	-28.3 C (-18.9 F)	1947	-18.3 C (-0.9 F)	103
Wettest day (Rx1day)	231.9 mm (9.1 in)	1972	64.9 mm (2.6 in)	104
Wettest five days (Rx5day)	240.5 mm (9.5 in)	1972	96.7 mm (3.8 in)	104
Longest dry spell (CDD)	97 days	1921	38 days	104

Hottest day (TXx)

The hottest day of the year at Mutual, 1915 to 2023. The record is 46.1 C (115.0 F) in 1917, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Mutual by year
Year	Hottest day (TXx)
1915	40.0 C (104.0 F)
1916	43.9 C (111.0 F)
1917	46.1 C (115.0 F)
1918	44.4 C (111.9 F)
1919	43.3 C (109.9 F)
1920	43.3 C (109.9 F)
1921	43.3 C (109.9 F)
1922	45.0 C (113.0 F)
1923	41.7 C (107.1 F)
1924	44.4 C (111.9 F)
1925	38.3 C (100.9 F)
1926	41.1 C (106.0 F)
1927	41.1 C (106.0 F)
1928	38.3 C (100.9 F)
1929	43.3 C (109.9 F)
1935	43.3 C (109.9 F)
1936	46.1 C (115.0 F)
1937	42.8 C (109.0 F)
1938	39.4 C (102.9 F)
1939	42.8 C (109.0 F)
1940	43.3 C (109.9 F)
1941	40.6 C (105.1 F)
1942	40.6 C (105.1 F)
1943	42.8 C (109.0 F)
1944	41.7 C (107.1 F)
1945	41.1 C (106.0 F)
1946	43.3 C (109.9 F)
1947	42.8 C (109.0 F)
1948	41.1 C (106.0 F)
1949	40.0 C (104.0 F)
1950	40.0 C (104.0 F)
1951	42.8 C (109.0 F)
1952	43.3 C (109.9 F)
1953	44.4 C (111.9 F)
1954	43.9 C (111.0 F)
1955	40.6 C (105.1 F)
1956	43.3 C (109.9 F)
1957	42.2 C (108.0 F)
1958	43.3 C (109.9 F)
1959	40.6 C (105.1 F)
1960	41.7 C (107.1 F)
1961	40.6 C (105.1 F)
1962	42.8 C (109.0 F)
1963	40.6 C (105.1 F)
1964	45.0 C (113.0 F)
1965	40.0 C (104.0 F)
1966	41.7 C (107.1 F)
1967	40.0 C (104.0 F)
1968	42.2 C (108.0 F)
1969	44.4 C (111.9 F)
1970	46.1 C (115.0 F)
1971	44.4 C (111.9 F)
1972	40.0 C (104.0 F)
1973	40.6 C (105.1 F)
1974	41.7 C (107.1 F)
1975	36.1 C (97.0 F)
1976	41.7 C (107.1 F)
1977	40.6 C (105.1 F)
1978	43.9 C (111.0 F)
1979	39.4 C (102.9 F)
1980	42.8 C (109.0 F)
1981	44.4 C (111.9 F)
1982	41.7 C (107.1 F)
1983	41.1 C (106.0 F)
1984	42.8 C (109.0 F)
1985	41.1 C (106.0 F)
1986	43.9 C (111.0 F)
1987	39.4 C (102.9 F)
1988	41.1 C (106.0 F)
1989	40.0 C (104.0 F)
1990	41.1 C (106.0 F)
1991	42.8 C (109.0 F)
1992	40.0 C (104.0 F)
1993	41.7 C (107.1 F)
1994	42.8 C (109.0 F)
1995	42.2 C (108.0 F)
1996	44.4 C (111.9 F)
1997	41.1 C (106.0 F)
1998	41.7 C (107.1 F)
1999	42.2 C (108.0 F)
2000	43.3 C (109.9 F)
2001	42.2 C (108.0 F)
2002	42.2 C (108.0 F)
2003	42.8 C (109.0 F)
2004	40.0 C (104.0 F)
2005	38.9 C (102.0 F)
2006	41.1 C (106.0 F)
2007	38.3 C (100.9 F)
2008	41.7 C (107.1 F)
2009	44.4 C (111.9 F)
2010	40.6 C (105.1 F)
2011	44.4 C (111.9 F)
2012	43.9 C (111.0 F)
2013	41.1 C (106.0 F)
2014	40.0 C (104.0 F)
2015	38.3 C (100.9 F)
2016	40.0 C (104.0 F)
2017	40.0 C (104.0 F)
2018	42.2 C (108.0 F)
2019	38.3 C (100.9 F)
2020	42.2 C (108.0 F)
2021	38.9 C (102.0 F)
2022	26.7 C (80.1 F)
2023	n/a

Coldest night (TNn)

The coldest night of the year at Mutual, 1915 to 2023. The record is -28.3 C (-18.9 F) in 1947, marked on the chart; the median year is -18.3 C (-0.9 F).

Coldest night (TNn) at Mutual by year
Year	Coldest night (TNn)
1915	-15.6 C (3.9 F)
1916	-21.1 C (-6.0 F)
1917	-19.4 C (-2.9 F)
1918	-22.8 C (-9.0 F)
1919	-19.4 C (-2.9 F)
1920	-18.9 C (-2.0 F)
1921	-15.6 C (3.9 F)
1922	-18.3 C (-0.9 F)
1923	-16.7 C (1.9 F)
1924	-22.2 C (-8.0 F)
1925	-17.2 C (1.0 F)
1926	-17.2 C (1.0 F)
1927	-20.0 C (-4.0 F)
1928	-20.0 C (-4.0 F)
1929	-15.6 C (3.9 F)
1935	-19.4 C (-2.9 F)
1936	-21.1 C (-6.0 F)
1937	-17.2 C (1.0 F)
1938	-13.3 C (8.1 F)
1939	-14.4 C (6.1 F)
1940	-22.2 C (-8.0 F)
1941	-10.6 C (12.9 F)
1942	-23.9 C (-11.0 F)
1943	-23.3 C (-9.9 F)
1944	-16.1 C (3.0 F)
1945	-14.4 C (6.1 F)
1946	-18.9 C (-2.0 F)
1947	-28.3 C (-18.9 F)
1948	-21.1 C (-6.0 F)
1949	-18.3 C (-0.9 F)
1950	-17.8 C (0.0 F)
1951	-22.2 C (-8.0 F)
1952	-16.7 C (1.9 F)
1953	-13.9 C (7.0 F)
1954	-15.6 C (3.9 F)
1955	-16.1 C (3.0 F)
1956	-16.1 C (3.0 F)
1957	-15.0 C (5.0 F)
1958	-20.0 C (-4.0 F)
1959	-25.0 C (-13.0 F)
1960	-20.6 C (-5.1 F)
1961	-20.0 C (-4.0 F)
1962	-21.1 C (-6.0 F)
1963	-21.7 C (-7.1 F)
1964	-18.9 C (-2.0 F)
1965	-18.3 C (-0.9 F)
1966	-21.1 C (-6.0 F)
1967	-16.7 C (1.9 F)
1968	-17.8 C (0.0 F)
1969	-13.9 C (7.0 F)
1970	-17.8 C (0.0 F)
1971	-17.2 C (1.0 F)
1972	-20.0 C (-4.0 F)
1973	-21.1 C (-6.0 F)
1974	-18.9 C (-2.0 F)
1975	-13.9 C (7.0 F)
1976	-17.8 C (0.0 F)
1977	-18.3 C (-0.9 F)
1978	-18.3 C (-0.9 F)
1979	-20.0 C (-4.0 F)
1980	-15.0 C (5.0 F)
1981	-21.1 C (-6.0 F)
1982	-19.4 C (-2.9 F)
1983	-20.6 C (-5.1 F)
1984	-23.3 C (-9.9 F)
1985	-20.6 C (-5.1 F)
1986	-18.3 C (-0.9 F)
1987	-17.2 C (1.0 F)
1988	-23.3 C (-9.9 F)
1989	-24.4 C (-11.9 F)
1990	-19.4 C (-2.9 F)
1991	-14.4 C (6.1 F)
1992	-12.8 C (9.0 F)
1993	-18.9 C (-2.0 F)
1994	-18.3 C (-0.9 F)
1995	-16.1 C (3.0 F)
1996	-23.9 C (-11.0 F)
1997	-16.7 C (1.9 F)
1998	-18.9 C (-2.0 F)
1999	-17.2 C (1.0 F)
2000	-16.1 C (3.0 F)
2001	-14.4 C (6.1 F)
2002	-17.2 C (1.0 F)
2003	-17.8 C (0.0 F)
2004	-17.8 C (0.0 F)
2005	-18.3 C (-0.9 F)
2006	-15.6 C (3.9 F)
2007	-18.3 C (-0.9 F)
2008	-14.4 C (6.1 F)
2009	-13.3 C (8.1 F)
2010	-16.7 C (1.9 F)
2011	-23.9 C (-11.0 F)
2012	-13.9 C (7.0 F)
2013	-17.8 C (0.0 F)
2014	-18.9 C (-2.0 F)
2015	-12.8 C (9.0 F)
2016	-18.9 C (-2.0 F)
2017	-16.7 C (1.9 F)
2018	-18.9 C (-2.0 F)
2019	-12.2 C (10.0 F)
2020	-13.9 C (7.0 F)
2021	-25.0 C (-13.0 F)
2022	-16.7 C (1.9 F)
2023	n/a

Wettest day (Rx1day)

The wettest day of the year at Mutual, 1915 to 2023. The record is 231.9 mm (9.1 in) in 1972, marked on the chart; the median year is 64.9 mm (2.6 in).

Wettest day (Rx1day) at Mutual by year
Year	Wettest day (Rx1day)
1915	77.0 mm (3.0 in)
1916	66.8 mm (2.6 in)
1917	76.2 mm (3.0 in)
1918	114.3 mm (4.5 in)
1919	59.7 mm (2.4 in)
1920	57.7 mm (2.3 in)
1921	82.6 mm (3.3 in)
1922	63.0 mm (2.5 in)
1923	64.5 mm (2.5 in)
1924	96.5 mm (3.8 in)
1925	44.5 mm (1.8 in)
1926	69.9 mm (2.8 in)
1927	52.1 mm (2.1 in)
1928	57.7 mm (2.3 in)
1929	62.0 mm (2.4 in)
1935	75.4 mm (3.0 in)
1936	38.9 mm (1.5 in)
1937	48.3 mm (1.9 in)
1938	61.7 mm (2.4 in)
1939	109.7 mm (4.3 in)
1940	59.4 mm (2.3 in)
1941	107.7 mm (4.2 in)
1942	54.4 mm (2.1 in)
1943	49.5 mm (1.9 in)
1944	57.2 mm (2.3 in)
1945	69.9 mm (2.8 in)
1946	130.0 mm (5.1 in)
1947	72.1 mm (2.8 in)
1948	73.7 mm (2.9 in)
1949	89.2 mm (3.5 in)
1950	60.5 mm (2.4 in)
1951	87.6 mm (3.4 in)
1952	29.5 mm (1.2 in)
1953	56.9 mm (2.2 in)
1954	78.2 mm (3.1 in)
1955	48.3 mm (1.9 in)
1956	61.7 mm (2.4 in)
1957	64.5 mm (2.5 in)
1958	78.7 mm (3.1 in)
1959	69.3 mm (2.7 in)
1960	52.6 mm (2.1 in)
1961	64.0 mm (2.5 in)
1962	95.3 mm (3.8 in)
1963	38.4 mm (1.5 in)
1964	57.7 mm (2.3 in)
1965	87.4 mm (3.4 in)
1966	35.8 mm (1.4 in)
1967	89.7 mm (3.5 in)
1968	47.2 mm (1.9 in)
1969	76.7 mm (3.0 in)
1970	92.2 mm (3.6 in)
1971	50.5 mm (2.0 in)
1972	231.9 mm (9.1 in)
1973	68.3 mm (2.7 in)
1974	135.9 mm (5.4 in)
1975	70.9 mm (2.8 in)
1976	39.1 mm (1.5 in)
1977	92.5 mm (3.6 in)
1978	63.5 mm (2.5 in)
1979	55.4 mm (2.2 in)
1980	63.0 mm (2.5 in)
1981	41.9 mm (1.6 in)
1982	79.5 mm (3.1 in)
1983	100.6 mm (4.0 in)
1984	98.3 mm (3.9 in)
1985	69.9 mm (2.8 in)
1986	75.7 mm (3.0 in)
1987	57.2 mm (2.3 in)
1988	52.6 mm (2.1 in)
1989	53.8 mm (2.1 in)
1990	65.3 mm (2.6 in)
1991	53.6 mm (2.1 in)
1992	76.7 mm (3.0 in)
1993	52.6 mm (2.1 in)
1994	57.2 mm (2.3 in)
1995	85.1 mm (3.4 in)
1996	87.6 mm (3.4 in)
1997	81.5 mm (3.2 in)
1998	95.5 mm (3.8 in)
1999	68.6 mm (2.7 in)
2000	81.3 mm (3.2 in)
2001	62.5 mm (2.5 in)
2002	101.6 mm (4.0 in)
2003	43.9 mm (1.7 in)
2004	48.0 mm (1.9 in)
2005	49.8 mm (2.0 in)
2006	60.7 mm (2.4 in)
2007	61.0 mm (2.4 in)
2008	210.8 mm (8.3 in)
2009	32.0 mm (1.3 in)
2010	102.9 mm (4.1 in)
2011	56.4 mm (2.2 in)
2012	76.7 mm (3.0 in)
2013	78.0 mm (3.1 in)
2014	66.5 mm (2.6 in)
2015	54.4 mm (2.1 in)
2016	54.9 mm (2.2 in)
2017	52.1 mm (2.1 in)
2018	125.7 mm (4.9 in)
2019	102.1 mm (4.0 in)
2020	69.6 mm (2.7 in)
2021	98.3 mm (3.9 in)
2022	56.6 mm (2.2 in)
2023	56.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mutual, 1915 to 2023. The record is 240.5 mm (9.5 in) in 1972, marked on the chart; the median year is 96.7 mm (3.8 in).

Wettest five days (Rx5day) at Mutual by year
Year	Wettest five days (Rx5day)
1915	94.3 mm (3.7 in)
1916	66.8 mm (2.6 in)
1917	101.6 mm (4.0 in)
1918	187.7 mm (7.4 in)
1919	88.1 mm (3.5 in)
1920	99.6 mm (3.9 in)
1921	153.4 mm (6.0 in)
1922	92.7 mm (3.6 in)
1923	130.3 mm (5.1 in)
1924	120.6 mm (4.7 in)
1925	58.5 mm (2.3 in)
1926	86.4 mm (3.4 in)
1927	69.6 mm (2.7 in)
1928	95.1 mm (3.7 in)
1929	86.4 mm (3.4 in)
1935	129.3 mm (5.1 in)
1936	64.0 mm (2.5 in)
1937	67.8 mm (2.7 in)
1938	121.6 mm (4.8 in)
1939	109.7 mm (4.3 in)
1940	76.2 mm (3.0 in)
1941	191.9 mm (7.6 in)
1942	96.5 mm (3.8 in)
1943	88.6 mm (3.5 in)
1944	81.8 mm (3.2 in)
1945	81.5 mm (3.2 in)
1946	148.0 mm (5.8 in)
1947	101.6 mm (4.0 in)
1948	92.0 mm (3.6 in)
1949	96.8 mm (3.8 in)
1950	81.1 mm (3.2 in)
1951	157.5 mm (6.2 in)
1952	75.8 mm (3.0 in)
1953	83.8 mm (3.3 in)
1954	96.0 mm (3.8 in)
1955	98.6 mm (3.9 in)
1956	61.7 mm (2.4 in)
1957	114.3 mm (4.5 in)
1958	115.1 mm (4.5 in)
1959	114.0 mm (4.5 in)
1960	77.9 mm (3.1 in)
1961	79.5 mm (3.1 in)
1962	122.0 mm (4.8 in)
1963	38.4 mm (1.5 in)
1964	84.0 mm (3.3 in)
1965	170.5 mm (6.7 in)
1966	72.4 mm (2.9 in)
1967	98.6 mm (3.9 in)
1968	62.5 mm (2.5 in)
1969	104.4 mm (4.1 in)
1970	99.6 mm (3.9 in)
1971	74.9 mm (2.9 in)
1972	240.5 mm (9.5 in)
1973	76.9 mm (3.0 in)
1974	179.9 mm (7.1 in)
1975	94.8 mm (3.7 in)
1976	64.3 mm (2.5 in)
1977	129.6 mm (5.1 in)
1978	123.7 mm (4.9 in)
1979	106.2 mm (4.2 in)
1980	92.2 mm (3.6 in)
1981	78.0 mm (3.1 in)
1982	139.0 mm (5.5 in)
1983	104.4 mm (4.1 in)
1984	102.3 mm (4.0 in)
1985	96.1 mm (3.8 in)
1986	136.9 mm (5.4 in)
1987	117.4 mm (4.6 in)
1988	65.5 mm (2.6 in)
1989	91.0 mm (3.6 in)
1990	68.3 mm (2.7 in)
1991	61.0 mm (2.4 in)
1992	87.4 mm (3.4 in)
1993	121.5 mm (4.8 in)
1994	78.8 mm (3.1 in)
1995	112.1 mm (4.4 in)
1996	108.2 mm (4.3 in)
1997	106.2 mm (4.2 in)
1998	161.8 mm (6.4 in)
1999	79.0 mm (3.1 in)
2000	87.9 mm (3.5 in)
2001	85.9 mm (3.4 in)
2002	137.5 mm (5.4 in)
2003	62.2 mm (2.4 in)
2004	93.6 mm (3.7 in)
2005	119.1 mm (4.7 in)
2006	65.8 mm (2.6 in)
2007	114.3 mm (4.5 in)
2008	222.5 mm (8.8 in)
2009	56.7 mm (2.2 in)
2010	118.7 mm (4.7 in)
2011	64.0 mm (2.5 in)
2012	99.8 mm (3.9 in)
2013	105.8 mm (4.2 in)
2014	78.2 mm (3.1 in)
2015	99.6 mm (3.9 in)
2016	83.8 mm (3.3 in)
2017	76.1 mm (3.0 in)
2018	226.3 mm (8.9 in)
2019	116.0 mm (4.6 in)
2020	106.6 mm (4.2 in)
2021	108.7 mm (4.3 in)
2022	111.4 mm (4.4 in)
2023	134.0 mm (5.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mutual, 1915 to 2023. The record is 97 days in 1921, marked on the chart; the median year is 38 days.

Longest dry spell (CDD) at Mutual by year
Year	Longest dry spell (CDD)
1915	68 days
1916	58 days
1917	52 days
1918	26 days
1919	34 days
1920	76 days
1921	97 days
1922	50 days
1923	51 days
1924	33 days
1925	44 days
1926	29 days
1927	58 days
1928	40 days
1929	21 days
1935	30 days
1936	67 days
1937	36 days
1938	44 days
1939	61 days
1940	37 days
1941	18 days
1942	35 days
1943	32 days
1944	30 days
1945	74 days
1946	36 days
1947	54 days
1948	33 days
1949	40 days
1950	58 days
1951	22 days
1952	49 days
1953	35 days
1954	90 days
1955	88 days
1956	56 days
1957	35 days
1958	33 days
1959	38 days
1960	28 days
1961	26 days
1962	57 days
1963	36 days
1964	33 days
1965	27 days
1966	51 days
1967	31 days
1968	32 days
1969	36 days
1970	31 days
1971	53 days
1972	41 days
1973	39 days
1974	39 days
1975	27 days
1976	49 days
1977	36 days
1978	40 days
1979	46 days
1980	32 days
1981	40 days
1982	45 days
1983	33 days
1984	42 days
1985	26 days
1986	38 days
1987	46 days
1988	42 days
1989	62 days
1990	37 days
1991	51 days
1992	36 days
1993	23 days
1994	25 days
1995	38 days
1996	57 days
1997	32 days
1998	23 days
1999	34 days
2000	57 days
2001	36 days
2002	31 days
2003	36 days
2004	37 days
2005	27 days
2006	53 days
2007	46 days
2008	30 days
2009	39 days
2010	22 days
2011	47 days
2012	33 days
2013	33 days
2014	34 days
2015	27 days
2016	35 days
2017	53 days
2018	47 days
2019	29 days
2020	45 days
2021	58 days
2022	42 days
2023	57 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

84 years with a frost

Across 84 years with a frost, the median last spring frost at Mutual falls on 15 April and the median first autumn frost on 25 October, which leaves a median of 195 days between them.

In 1992 to 2021 the median growing season was 192 days. That is 3 days fewer than in 1915 to 1961.

Fitted over all years, the growing season changes by +0.1 days per decade at this station.

Frost dates and growing season at Mutual
Measure	Median, all years	Earliest period (1915 to 1961)	Recent period (1992 to 2021)	Recent against earliest	Fitted trend
Last spring frost	15 April	17 April	17 April	no change	-0.4 days per decade
First autumn frost	25 October	28 October	24 October	4 days earlier	-0.2 days per decade
Growing days	195 days	195 days	192 days	3 days fewer	+0.1 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

99 years, 1915 to 2023

A day with at least 66.0 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 181.4 mm (7.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Mutual: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	66.0 mm (2.6 in)
5 years	89.1 mm (3.5 in)
10 years	107.1 mm (4.2 in)
25 years	133.5 mm (5.3 in)
50 years	156.1 mm (6.1 in)
100 years	181.4 mm (7.1 in)	Longer than the 99 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, 99 years of values from 1915 to 2023.

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: 231.9 mm (9.1 in) in 1972; 210.8 mm (8.3 in) in 2008; 135.9 mm (5.4 in) in 1974.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Mutual, at 1960. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1960 ran 0.4 C (0.6 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Mutual, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1960	+0.4	+0.6	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

2007 to 2021 against 1961 to 1990

Over 2007 to 2021, Mutual had a mean temperature of 14.4 C (57.8 F) and 662.1 mm (26.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Anthony (United States, 145 km away), Coldwater (United States, 117 km away) and Medicine Lodge (United States, 128 km away).

Climate twins of Mutual: stations whose 1961 to 1990 climate is closest to its 2007 to 2021 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Anthony	United States	145 km (90 mi)	14.6 C (58.3 F)	698.4 mm (27.5 in)	0.86
Coldwater	United States	117 km (73 mi)	14.0 C (57.2 F)	631.0 mm (24.8 in)	0.95
Medicine Lodge	United States	128 km (80 mi)	14.1 C (57.3 F)	642.5 mm (25.3 in)	0.96

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