Cimarron Weather Records (USC00051609)

Record envelope, standing records and threshold days for Cimarron (USC00051609), Colorado, United States, with 76 years of record.

Key Facts for Cimarron

Cimarron (USC00051609) is a weather station in Colorado, United States at 38.44 latitude and -107.56 longitude, 2,100 m (6,890 ft) above sea level.
The station reports from 1951 to 2026, 76 years of record.
1,464 records set at Cimarron still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Cimarron tied a daily record high maximum temperature of 32.2 C (90.0 F) on 27 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Colorado, United States, 38.44 latitude, -107.56 longitude.
Elevation: 2,100 m (6,890 ft).
Period of record: 1951 to 2026, 76 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

38 days at or beyond a record

The band shows the record high and record low for each calendar day at Cimarron. The lines show the 2026 daily maximum and minimum. 38 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Cimarron, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-41.7 C (-43.1 F)	11.1 C (52.0 F)	-30.0 C (-22.0 F)
Feb	18.3 C (64.9 F)	-40.0 C (-40.0 F)	16.7 C (62.1 F)	-16.7 C (1.9 F)
Mar	27.8 C (82.0 F)	-32.2 C (-26.0 F)	27.8 C (82.0 F)	-11.1 C (12.0 F)
Apr	29.4 C (84.9 F)	-22.8 C (-9.0 F)	22.8 C (73.0 F)	-13.9 C (7.0 F)
May	32.8 C (91.0 F)	-15.6 C (3.9 F)	28.9 C (84.0 F)	-6.7 C (19.9 F)
Jun	35.6 C (96.1 F)	-7.2 C (19.0 F)	32.8 C (91.0 F)	-1.7 C (28.9 F)
Jul	36.7 C (98.1 F)	-1.7 C (28.9 F)	35.6 C (96.1 F)	-1.1 C (30.0 F)
Aug	35.0 C (95.0 F)	-2.8 C (27.0 F)	35.0 C (95.0 F)	-1.1 C (30.0 F)
Sep	34.4 C (93.9 F)	-10.6 C (12.9 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Nov	25.6 C (78.1 F)	-31.1 C (-24.0 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-36.1 C (-33.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cimarron still stand. 1963 holds the most, with 42.

Standing records at Cimarron by the year they were set
Year set	Standing records
1951	13
1952	31
1953	13
1954	41
1955	20
1956	20
1957	16
1958	20
1959	20
1960	20
1961	15
1962	26
1963	42
1964	13
1965	10
1966	14
1967	10
1968	7
1969	32
1970	15
1971	20
1972	21
1973	13
1974	29
1975	29
1976	18
1977	15
1978	22
1979	28
1980	26
1981	11
1982	10
1983	15
1984	10
1985	25
1986	34
1987	10
1988	18
1989	20
1990	22
1991	14
1992	24
1993	11
1994	11
1995	20
1996	31
1997	16
1998	15
1999	14
2000	27
2001	12
2002	19
2003	20
2004	28
2005	20
2006	24
2007	28
2008	20
2009	12
2010	19
2011	9
2012	20
2013	15
2014	7
2015	15
2016	17
2017	19
2018	20
2019	14
2020	28
2021	20
2022	16
2023	15
2024	9
2025	23
2026	38

All-Time Record Progression

3 new records

3 all-time records were set at Cimarron between 28 March 1985 and 18 August 1996. Each dot is a new record.

When Cimarron set new all-time records
Date	Kind	Detail
1985-03-28	Record daily snowfall	Record daily snowfall 61.0 cm (24.0 in)
1992-08-11	Record high minimum temperature	Record high minimum temperature 16.7 C (62.1 F)
1996-08-18	Record high minimum temperature	Record high minimum temperature 17.2 C (63.0 F)

Wettest Day of Each Month

Sep: 91.4 mm (3.6 in)

The wettest day on record for each calendar month at Cimarron. The most was 91.4 mm (3.6 in) on 21 September 1952.

Record daily precipitation for each month at Cimarron
Month	Record daily precipitation (mm)	Date
Jan	50.8 mm (2.0 in)	13 January 1962
Feb	38.1 mm (1.5 in)	28 February 2003
Mar	38.1 mm (1.5 in)	31 March 1952
Apr	38.1 mm (1.5 in)	8 April 2018
May	59.7 mm (2.4 in)	17 May 1953
Jun	36.1 mm (1.4 in)	24 June 1969
Jul	53.6 mm (2.1 in)	9 July 2014
Aug	55.9 mm (2.2 in)	10 August 1952
Sep	91.4 mm (3.6 in)	21 September 1952
Oct	44.5 mm (1.8 in)	21 October 1978
Nov	27.4 mm (1.1 in)	1 November 1986
Dec	38.1 mm (1.5 in)	2 December 2007

Period of Record Coverage

1951 to 2026

76 years of record at Cimarron, 1951 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1951, 1955, 1963, 1964, 1968, 1981, 1987, 1995 and others.

Days with data per year at Cimarron
Year	Days with data	Share of year	Complete
1951	106	29%	No
1952	364	99%	Yes
1953	359	98%	Yes
1954	360	99%	Yes
1955	270	74%	No
1956	355	97%	Yes
1957	356	98%	Yes
1958	354	97%	Yes
1959	364	100%	Yes
1960	351	96%	Yes
1961	360	99%	Yes
1962	335	92%	Yes
1963	291	80%	No
1964	221	60%	No
1965	363	99%	Yes
1966	359	98%	Yes
1967	360	99%	Yes
1968	291	80%	No
1969	364	100%	Yes
1970	360	99%	Yes
1971	359	98%	Yes
1972	365	100%	Yes
1973	360	99%	Yes
1974	360	99%	Yes
1975	360	99%	Yes
1976	362	99%	Yes
1977	360	99%	Yes
1978	357	98%	Yes
1979	360	99%	Yes
1980	355	97%	Yes
1981	324	89%	No
1982	343	94%	Yes
1983	354	97%	Yes
1984	351	96%	Yes
1985	354	97%	Yes
1986	361	99%	Yes
1987	305	84%	No
1988	350	96%	Yes
1989	355	97%	Yes
1990	331	91%	Yes
1991	361	99%	Yes
1992	359	98%	Yes
1993	361	99%	Yes
1994	356	98%	Yes
1995	324	89%	No
1996	356	97%	Yes
1997	359	98%	Yes
1998	358	98%	Yes
1999	359	98%	Yes
2000	355	97%	Yes
2001	360	99%	Yes
2002	358	98%	Yes
2003	355	97%	Yes
2004	365	100%	Yes
2005	359	98%	Yes
2006	361	99%	Yes
2007	361	99%	Yes
2008	361	99%	Yes
2009	360	99%	Yes
2010	361	99%	Yes
2011	363	99%	Yes
2012	332	91%	Yes
2013	365	100%	Yes
2014	352	96%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	364	100%	Yes
2022	364	100%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	365	100%	Yes
2026	242	66%	No

Latest Records

Latest records at Cimarron
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 August 2026	Cimarron, US	daily high max (Tie, Provisional)	32.2 C (90.0 F)	tie	5 years	2 of 100 (Routine)
26 August 2026	Cimarron, US	daily high max (Tie, Provisional)	32.2 C (90.0 F)	tie	40 years	4 of 100 (Routine)
20 August 2026	Cimarron, US	daily high max (Tie, Provisional)	34.4 C (93.9 F)	tie	5 years	2 of 100 (Routine)
13 August 2026	Cimarron, US	daily high min	13.9 C (57.0 F)	1.1 C (2.0 F)	47 years	24 of 100 (Routine)
11 August 2026	Cimarron, US	daily high max (Tie)	32.2 C (90.0 F)	tie	65 years	6 of 100 (Routine)
9 August 2026	Cimarron, US	daily high max (Tie)	34.4 C (93.9 F)	tie	56 years	6 of 100 (Routine)
8 August 2026	Cimarron, US	monthly high max	35.0 C (95.0 F)	0.6 C (1.1 F)	56 years	36 of 100 (Notable)
7 August 2026	Cimarron, US	monthly high max (Tie)	34.4 C (93.9 F)	tie	56 years	8 of 100 (Routine)
4 August 2026	Cimarron, US	monthly high max (Tie)	34.4 C (93.9 F)	tie	56 years	8 of 100 (Routine)
3 August 2026	Cimarron, US	monthly high max (Tie)	34.4 C (93.9 F)	tie	56 years	8 of 100 (Routine)
2 August 2026	Cimarron, US	monthly high max (Tie)	34.4 C (93.9 F)	tie	56 years	8 of 100 (Routine)
29 July 2026	Cimarron, US	daily high min	15.0 C (59.0 F)	0.6 C (1.1 F)	8 years	10 of 100 (Routine)
27 July 2026	Cimarron, US	daily high min	15.0 C (59.0 F)	1.7 C (3.1 F)	15 years	16 of 100 (Routine)
27 July 2026	Cimarron, US	daily rain	14.2 mm (0.6 in)	4.0 mm (0.16 in)	12 years	16 of 100 (Routine)
25 July 2026	Cimarron, US	daily rain	20.3 mm (0.8 in)	4.6 mm (0.18 in)	72 years	20 of 100 (Routine)
25 July 2026	Cimarron, US	daily high max (Tie)	33.9 C (93.0 F)	tie	63 years	6 of 100 (Routine)
23 July 2026	Cimarron, US	daily high min	14.4 C (57.9 F)	0.5 C (0.9 F)	4 years	9 of 100 (Routine)
20 July 2026	Cimarron, US	daily high max	35.6 C (96.1 F)	1.7 C (3.1 F)	63 years	31 of 100 (Routine)
19 July 2026	Cimarron, US	daily high min	15.6 C (60.1 F)	1.7 C (3.1 F)	45 years	25 of 100 (Routine)
19 July 2026	Cimarron, US	daily high max (Tie)	34.4 C (93.9 F)	tie	16 years	2 of 100 (Routine)

Climate Trend

62 complete years, 1952 to 2025

One stripe for each of 62 complete years at Cimarron, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 5.5 C (41.9 F); red stripes are warmer. The coolest year was 1975, at 3.0 C (37.3 F), and the warmest was 2017, at 7.2 C (44.9 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Cimarron as warming stripes, 1952 to 2025
Year	Annual mean temperature	Difference from the station mean
1952	4.4 C	-1.15 C
1953	5.4 C	-0.13 C
1954	6.4 C	+0.92 C
1956	5.2 C	-0.35 C
1957	5.2 C	-0.27 C
1958	6.0 C	+0.46 C
1959	5.6 C	+0.09 C
1960	5.6 C	+0.05 C
1961	5.2 C	-0.27 C
1965	5.0 C	-0.51 C
1966	5.0 C	-0.49 C
1967	5.9 C	+0.37 C
1969	5.1 C	-0.43 C
1970	5.1 C	-0.40 C
1971	5.0 C	-0.52 C
1972	4.7 C	-0.76 C
1973	4.2 C	-1.32 C
1974	4.1 C	-1.45 C
1975	3.0 C	-2.55 C
1976	4.3 C	-1.21 C
1977	5.4 C	-0.15 C
1978	4.9 C	-0.61 C
1979	4.4 C	-1.11 C
1980	5.6 C	+0.14 C
1982	4.9 C	-0.64 C
1983	5.5 C	-0.04 C
1984	4.3 C	-1.25 C
1985	5.6 C	+0.05 C
1986	6.2 C	+0.71 C
1989	5.2 C	-0.32 C
1991	5.0 C	-0.52 C
1992	5.6 C	+0.10 C
1993	5.1 C	-0.40 C
1994	6.0 C	+0.51 C
1996	6.0 C	+0.54 C
1997	5.1 C	-0.36 C
1998	6.2 C	+0.65 C
1999	6.3 C	+0.79 C
2000	6.6 C	+1.06 C
2001	5.9 C	+0.37 C
2002	5.2 C	-0.35 C
2003	6.1 C	+0.57 C
2004	5.1 C	-0.42 C
2005	6.3 C	+0.76 C
2006	5.5 C	+0.03 C
2007	6.5 C	+0.95 C
2008	4.6 C	-0.94 C
2009	5.1 C	-0.36 C
2010	5.8 C	+0.33 C
2011	5.3 C	-0.21 C
2013	4.8 C	-0.74 C
2015	6.8 C	+1.28 C
2016	6.3 C	+0.80 C
2017	7.2 C	+1.68 C
2018	6.7 C	+1.21 C
2019	5.3 C	-0.25 C
2020	6.3 C	+0.79 C
2021	6.9 C	+1.42 C
2022	6.1 C	+0.58 C
2023	5.6 C	+0.07 C
2024	6.8 C	+1.33 C
2025	7.1 C	+1.59 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1952 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 62 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cimarron
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.3 F (0.2 to 0.5) per decade	1952 to 2025	62	Rise
Mean daily maximum	0.09 C (-0.03 to 0.21) per decade	0.2 F (-0.1 to 0.4) per decade	1952 to 2025	62	Not clearly different from zero
Mean daily minimum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.3 to 0.7) per decade	1952 to 2025	62	Rise

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

1951 to 2026

Yearly extremes at Cimarron: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1961	33.9 C (93.0 F)	76
Coldest night (TNn)	-41.7 C (-43.1 F)	1963	-31.7 C (-25.1 F)	76
Wettest day (Rx1day)	91.4 mm (3.6 in)	1952	22.9 mm (0.9 in)	76
Wettest five days (Rx5day)	100.4 mm (4.0 in)	1952	37.3 mm (1.5 in)	76
Longest dry spell (CDD)	131 days	1958	39 days	76

Hottest day (TXx)

The hottest day of the year at Cimarron, 1951 to 2026. The record is 36.7 C (98.1 F) in 1961, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Cimarron by year
Year	Hottest day (TXx)
1951	28.9 C (84.0 F)
1952	33.3 C (91.9 F)
1953	34.4 C (93.9 F)
1954	33.9 C (93.0 F)
1955	35.0 C (95.0 F)
1956	32.8 C (91.0 F)
1957	32.2 C (90.0 F)
1958	33.9 C (93.0 F)
1959	33.9 C (93.0 F)
1960	35.0 C (95.0 F)
1961	36.7 C (98.1 F)
1962	35.6 C (96.1 F)
1963	35.0 C (95.0 F)
1964	30.6 C (87.1 F)
1965	32.2 C (90.0 F)
1966	35.0 C (95.0 F)
1967	31.7 C (89.1 F)
1968	32.8 C (91.0 F)
1969	34.4 C (93.9 F)
1970	33.9 C (93.0 F)
1971	35.0 C (95.0 F)
1972	33.9 C (93.0 F)
1973	33.9 C (93.0 F)
1974	32.8 C (91.0 F)
1975	32.2 C (90.0 F)
1976	33.9 C (93.0 F)
1977	33.3 C (91.9 F)
1978	33.9 C (93.0 F)
1979	34.4 C (93.9 F)
1980	34.4 C (93.9 F)
1981	33.3 C (91.9 F)
1982	33.3 C (91.9 F)
1983	31.7 C (89.1 F)
1984	30.6 C (87.1 F)
1985	33.9 C (93.0 F)
1986	32.8 C (91.0 F)
1987	33.3 C (91.9 F)
1988	32.8 C (91.0 F)
1989	36.1 C (97.0 F)
1990	34.4 C (93.9 F)
1991	32.2 C (90.0 F)
1992	31.1 C (88.0 F)
1993	31.7 C (89.1 F)
1994	34.4 C (93.9 F)
1995	32.8 C (91.0 F)
1996	33.9 C (93.0 F)
1997	32.8 C (91.0 F)
1998	33.9 C (93.0 F)
1999	32.2 C (90.0 F)
2000	33.9 C (93.0 F)
2001	32.8 C (91.0 F)
2002	33.9 C (93.0 F)
2003	35.0 C (95.0 F)
2004	32.8 C (91.0 F)
2005	35.6 C (96.1 F)
2006	35.6 C (96.1 F)
2007	36.1 C (97.0 F)
2008	33.3 C (91.9 F)
2009	33.3 C (91.9 F)
2010	35.0 C (95.0 F)
2011	33.3 C (91.9 F)
2012	33.3 C (91.9 F)
2013	33.9 C (93.0 F)
2014	33.3 C (91.9 F)
2015	33.3 C (91.9 F)
2016	34.4 C (93.9 F)
2017	33.9 C (93.0 F)
2018	35.0 C (95.0 F)
2019	33.9 C (93.0 F)
2020	35.0 C (95.0 F)
2021	36.7 C (98.1 F)
2022	34.4 C (93.9 F)
2023	35.6 C (96.1 F)
2024	34.4 C (93.9 F)
2025	34.4 C (93.9 F)
2026	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Cimarron, 1951 to 2026. The record is -41.7 C (-43.1 F) in 1963, marked on the chart; the median year is -31.7 C (-25.1 F).

Coldest night (TNn) at Cimarron by year
Year	Coldest night (TNn)
1951	-34.4 C (-29.9 F)
1952	-37.8 C (-36.0 F)
1953	-31.7 C (-25.1 F)
1954	-32.2 C (-26.0 F)
1955	-40.0 C (-40.0 F)
1956	-33.9 C (-29.0 F)
1957	-29.4 C (-20.9 F)
1958	-31.7 C (-25.1 F)
1959	-31.7 C (-25.1 F)
1960	-31.7 C (-25.1 F)
1961	-36.1 C (-33.0 F)
1962	-31.1 C (-24.0 F)
1963	-41.7 C (-43.1 F)
1964	-36.1 C (-33.0 F)
1965	-31.7 C (-25.1 F)
1966	-31.1 C (-24.0 F)
1967	-33.9 C (-29.0 F)
1968	-32.2 C (-26.0 F)
1969	-29.4 C (-20.9 F)
1970	-32.2 C (-26.0 F)
1971	-37.8 C (-36.0 F)
1972	-33.3 C (-27.9 F)
1973	-31.7 C (-25.1 F)
1974	-35.0 C (-31.0 F)
1975	-32.2 C (-26.0 F)
1976	-31.7 C (-25.1 F)
1977	-31.7 C (-25.1 F)
1978	-31.1 C (-24.0 F)
1979	-36.7 C (-34.1 F)
1980	-24.4 C (-11.9 F)
1981	-26.7 C (-16.1 F)
1982	-36.1 C (-33.0 F)
1983	-26.1 C (-15.0 F)
1984	-37.2 C (-35.0 F)
1985	-34.4 C (-29.9 F)
1986	-26.1 C (-15.0 F)
1987	-26.7 C (-16.1 F)
1988	-33.3 C (-27.9 F)
1989	-37.2 C (-35.0 F)
1990	-36.1 C (-33.0 F)
1991	-30.0 C (-22.0 F)
1992	-27.2 C (-17.0 F)
1993	-27.2 C (-17.0 F)
1994	-32.8 C (-27.0 F)
1995	-26.1 C (-15.0 F)
1996	-30.6 C (-23.1 F)
1997	-31.1 C (-24.0 F)
1998	-30.6 C (-23.1 F)
1999	-30.0 C (-22.0 F)
2000	-29.4 C (-20.9 F)
2001	-26.7 C (-16.1 F)
2002	-32.2 C (-26.0 F)
2003	-32.2 C (-26.0 F)
2004	-37.8 C (-36.0 F)
2005	-35.6 C (-32.1 F)
2006	-31.7 C (-25.1 F)
2007	-30.6 C (-23.1 F)
2008	-33.3 C (-27.9 F)
2009	-33.3 C (-27.9 F)
2010	-28.9 C (-20.0 F)
2011	-37.8 C (-36.0 F)
2012	-33.3 C (-27.9 F)
2013	-36.1 C (-33.0 F)
2014	-26.7 C (-16.1 F)
2015	-27.8 C (-18.0 F)
2016	-33.9 C (-29.0 F)
2017	-32.2 C (-26.0 F)
2018	-25.0 C (-13.0 F)
2019	-31.1 C (-24.0 F)
2020	-31.1 C (-24.0 F)
2021	-28.9 C (-20.0 F)
2022	-31.1 C (-24.0 F)
2023	-30.6 C (-23.1 F)
2024	-27.2 C (-17.0 F)
2025	-35.6 C (-32.1 F)
2026	-30.0 C (-22.0 F)

Wettest day (Rx1day)

The wettest day of the year at Cimarron, 1951 to 2026. The record is 91.4 mm (3.6 in) in 1952, marked on the chart; the median year is 22.9 mm (0.9 in).

Wettest day (Rx1day) at Cimarron by year
Year	Wettest day (Rx1day)
1951	25.4 mm (1.0 in)
1952	91.4 mm (3.6 in)
1953	59.7 mm (2.4 in)
1954	21.6 mm (0.9 in)
1955	12.7 mm (0.5 in)
1956	25.4 mm (1.0 in)
1957	34.3 mm (1.4 in)
1958	15.2 mm (0.6 in)
1959	21.8 mm (0.9 in)
1960	24.9 mm (1.0 in)
1961	19.3 mm (0.8 in)
1962	50.8 mm (2.0 in)
1963	17.8 mm (0.7 in)
1964	15.2 mm (0.6 in)
1965	26.2 mm (1.0 in)
1966	25.4 mm (1.0 in)
1967	25.4 mm (1.0 in)
1968	25.4 mm (1.0 in)
1969	36.1 mm (1.4 in)
1970	22.9 mm (0.9 in)
1971	20.3 mm (0.8 in)
1972	26.7 mm (1.1 in)
1973	15.2 mm (0.6 in)
1974	28.7 mm (1.1 in)
1975	12.7 mm (0.5 in)
1976	17.5 mm (0.7 in)
1977	22.9 mm (0.9 in)
1978	44.5 mm (1.8 in)
1979	18.0 mm (0.7 in)
1980	19.1 mm (0.8 in)
1981	44.5 mm (1.8 in)
1982	19.1 mm (0.8 in)
1983	44.5 mm (1.8 in)
1984	22.1 mm (0.9 in)
1985	20.6 mm (0.8 in)
1986	27.4 mm (1.1 in)
1987	25.4 mm (1.0 in)
1988	32.5 mm (1.3 in)
1989	17.8 mm (0.7 in)
1990	33.8 mm (1.3 in)
1991	16.5 mm (0.6 in)
1992	31.0 mm (1.2 in)
1993	17.0 mm (0.7 in)
1994	14.7 mm (0.6 in)
1995	35.8 mm (1.4 in)
1996	30.5 mm (1.2 in)
1997	31.0 mm (1.2 in)
1998	21.3 mm (0.8 in)
1999	22.4 mm (0.9 in)
2000	17.8 mm (0.7 in)
2001	24.1 mm (0.9 in)
2002	22.4 mm (0.9 in)
2003	38.1 mm (1.5 in)
2004	18.8 mm (0.7 in)
2005	31.8 mm (1.3 in)
2006	31.8 mm (1.3 in)
2007	39.9 mm (1.6 in)
2008	17.8 mm (0.7 in)
2009	21.6 mm (0.9 in)
2010	15.2 mm (0.6 in)
2011	50.8 mm (2.0 in)
2012	22.9 mm (0.9 in)
2013	23.1 mm (0.9 in)
2014	66.0 mm (2.6 in)
2015	20.3 mm (0.8 in)
2016	17.8 mm (0.7 in)
2017	19.8 mm (0.8 in)
2018	38.1 mm (1.5 in)
2019	24.1 mm (0.9 in)
2020	18.5 mm (0.7 in)
2021	16.8 mm (0.7 in)
2022	20.8 mm (0.8 in)
2023	39.1 mm (1.5 in)
2024	22.9 mm (0.9 in)
2025	17.0 mm (0.7 in)
2026	20.3 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cimarron, 1951 to 2026. The record is 100.4 mm (4.0 in) in 1952, marked on the chart; the median year is 37.3 mm (1.5 in).

Wettest five days (Rx5day) at Cimarron by year
Year	Wettest five days (Rx5day)
1951	47.0 mm (1.9 in)
1952	100.4 mm (4.0 in)
1953	63.5 mm (2.5 in)
1954	57.2 mm (2.3 in)
1955	31.7 mm (1.2 in)
1956	35.6 mm (1.4 in)
1957	38.6 mm (1.5 in)
1958	32.9 mm (1.3 in)
1959	48.3 mm (1.9 in)
1960	53.3 mm (2.1 in)
1961	24.3 mm (1.0 in)
1962	50.8 mm (2.0 in)
1963	34.3 mm (1.4 in)
1964	23.3 mm (0.9 in)
1965	41.2 mm (1.6 in)
1966	31.8 mm (1.3 in)
1967	33.7 mm (1.3 in)
1968	34.3 mm (1.4 in)
1969	53.7 mm (2.1 in)
1970	36.2 mm (1.4 in)
1971	48.5 mm (1.9 in)
1972	51.3 mm (2.0 in)
1973	36.8 mm (1.4 in)
1974	43.7 mm (1.7 in)
1975	21.6 mm (0.9 in)
1976	26.4 mm (1.0 in)
1977	47.6 mm (1.9 in)
1978	53.4 mm (2.1 in)
1979	31.2 mm (1.2 in)
1980	33.8 mm (1.3 in)
1981	51.1 mm (2.0 in)
1982	31.9 mm (1.3 in)
1983	51.4 mm (2.0 in)
1984	37.3 mm (1.5 in)
1985	37.3 mm (1.5 in)
1986	32.2 mm (1.3 in)
1987	28.2 mm (1.1 in)
1988	32.5 mm (1.3 in)
1989	30.0 mm (1.2 in)
1990	42.2 mm (1.7 in)
1991	29.2 mm (1.1 in)
1992	55.5 mm (2.2 in)
1993	28.7 mm (1.1 in)
1994	25.7 mm (1.0 in)
1995	55.9 mm (2.2 in)
1996	41.0 mm (1.6 in)
1997	48.8 mm (1.9 in)
1998	30.4 mm (1.2 in)
1999	58.1 mm (2.3 in)
2000	32.5 mm (1.3 in)
2001	34.8 mm (1.4 in)
2002	37.0 mm (1.5 in)
2003	53.7 mm (2.1 in)
2004	48.5 mm (1.9 in)
2005	38.1 mm (1.5 in)
2006	53.7 mm (2.1 in)
2007	59.7 mm (2.4 in)
2008	42.5 mm (1.7 in)
2009	39.9 mm (1.6 in)
2010	36.8 mm (1.4 in)
2011	36.8 mm (1.4 in)
2012	37.6 mm (1.5 in)
2013	36.8 mm (1.4 in)
2014	78.7 mm (3.1 in)
2015	36.0 mm (1.4 in)
2016	31.0 mm (1.2 in)
2017	25.6 mm (1.0 in)
2018	41.4 mm (1.6 in)
2019	57.2 mm (2.3 in)
2020	20.8 mm (0.8 in)
2021	27.5 mm (1.1 in)
2022	45.5 mm (1.8 in)
2023	46.7 mm (1.8 in)
2024	24.5 mm (1.0 in)
2025	31.0 mm (1.2 in)
2026	41.9 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cimarron, 1951 to 2026. The record is 131 days in 1958, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Cimarron by year
Year	Longest dry spell (CDD)
1951	16 days
1952	48 days
1953	42 days
1954	40 days
1955	67 days
1956	48 days
1957	38 days
1958	131 days
1959	36 days
1960	30 days
1961	63 days
1962	58 days
1963	72 days
1964	22 days
1965	28 days
1966	26 days
1967	27 days
1968	40 days
1969	37 days
1970	31 days
1971	68 days
1972	27 days
1973	45 days
1974	54 days
1975	64 days
1976	70 days
1977	39 days
1978	44 days
1979	45 days
1980	44 days
1981	27 days
1982	66 days
1983	41 days
1984	33 days
1985	40 days
1986	23 days
1987	19 days
1988	28 days
1989	40 days
1990	20 days
1991	38 days
1992	34 days
1993	52 days
1994	39 days
1995	33 days
1996	48 days
1997	39 days
1998	37 days
1999	38 days
2000	27 days
2001	38 days
2002	67 days
2003	41 days
2004	45 days
2005	42 days
2006	32 days
2007	35 days
2008	26 days
2009	31 days
2010	46 days
2011	3 days
2012	27 days
2013	52 days
2014	44 days
2015	41 days
2016	40 days
2017	32 days
2018	30 days
2019	41 days
2020	45 days
2021	36 days
2022	19 days
2023	46 days
2024	29 days
2025	27 days
2026	24 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

62 years with a frost

Across 62 years with a frost, the median last spring frost at Cimarron falls on 21 June and the median first autumn frost on 28 August, which leaves a median of 68 days between them.

In 1993 to 2025 the median growing season was 74 days. That is 26 days more than in 1952 to 1989.

Fitted over all years, the growing season changes by +3.1 days per decade at this station.

Frost dates and growing season at Cimarron
Measure	Median, all years	Earliest period (1952 to 1989)	Recent period (1993 to 2025)	Recent against earliest	Fitted trend
Last spring frost	21 June	22 June	20 June	2 days earlier	-0.3 days per decade
First autumn frost	28 August	12 August	4 September	23 days later	+2.7 days per decade
Growing days	68 days	48 days	74 days	26 days more	+3.1 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

68 years, 1952 to 2025

A day with at least 23.5 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 83.2 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Cimarron: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	23.5 mm (0.9 in)
5 years	33.1 mm (1.3 in)
10 years	41.5 mm (1.6 in)
25 years	55.0 mm (2.2 in)
50 years	67.7 mm (2.7 in)
100 years	83.2 mm (3.3 in)	Longer than the 68 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, 68 years of values from 1952 to 2025.

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: 91.4 mm (3.6 in) in 1952; 66.0 mm (2.6 in) in 2014; 59.7 mm (2.4 in) in 1953.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2009 to 2025 against 1961 to 1990

Over 2009 to 2025, Cimarron had a mean temperature of 6.1 C (43.0 F) and 326.3 mm (12.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Eagle FAA AP (United States, 145 km away), Birdseye (United States, 378 km away) and Altamont (United States, 318 km away).

Climate twins of Cimarron: stations whose 1961 to 1990 climate is closest to its 2009 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Eagle FAA AP	United States	145 km (90 mi)	6.0 C (42.9 F)	271.2 mm (10.7 in)	0.54
Birdseye	United States	378 km (235 mi)	6.1 C (43.0 F)	368.2 mm (14.5 in)	0.64
Altamont	United States	318 km (198 mi)	6.3 C (43.4 F)	232.0 mm (9.1 in)	0.69

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 Cimarron standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cimarron 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).