Custer Threshold Days by Year (USC00392087)

18 fixed thresholds counted per year at Custer (USC00392087): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Custer Thresholds

Custer: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1915 with 23.
Custer: days with 25 mm (0.98 in) or more of precipitation in 83 years, most in 1923 with 7.
Custer: nights with a minimum temperature at or below 0 C (32 F) in 69 years, most in 1966 with 250.
Custer: nights with a minimum temperature at or below -10 C (14 F) in 69 years, most in 1944 with 106.
18 fixed thresholds have at least one qualifying day at Custer.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Custer with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1988.

Days at or above 30 C (86 F) per year at Custer
Year	Days	Decade average
1943	15	15.8
1944	12	15.8
1945	15	15.8
1946	17	15.8
1947	20	15.8
1954	27	19.2
1955	23	19.2
1956	15	19.2
1957	17	19.2
1958	11	19.2
1959	22	19.2
1960	26	18.5
1961	19	18.5
1962	12	18.5
1963	18	18.5
1964	30	18.5
1965	9	18.5
1966	26	18.5
1967	13	18.5
1968	12	18.5
1969	20	18.5
1970	15	18.3
1971	14	18.3
1972	10	18.3
1973	21	18.3
1974	25	18.3
1975	20	18.3
1976	20	18.3
1977	19	18.3
1978	21	18.3
1980	23	19.9
1981	13	19.9
1984	1	19.9
1985	15	19.9
1987	18	19.9
1988	49	19.9
1989	20	19.9
1990	18	11.1
1991	11	11.1
1992	3	11.1
1993	3	11.1
1994	17	11.1
1996	12	11.1
1997	8	11.1
1998	15	11.1
1999	13	11.1
2000	33	25
2003	33	25
2007	25	25
2009	9	25
2010	12	13.8
2011	24	13.8
2012	32	13.8
2013	8	13.8
2014	5	13.8
2015	10	13.8
2016	20	13.8
2017	15	13.8
2018	8	13.8
2019	4	13.8
2020	12	17.9
2021	20	17.9
2022	27	17.9
2023	12	17.9
2024	27	17.9
2025	14	17.9
2026	13	17.9

For each year, a bar from the first to the last day at Custer meeting 30 C (86 F).

First to last qualifying date each year at Custer
Year	First date	Last date
1943	1943-06-22	1943-08-23
1944	1944-06-25	1944-08-18
1945	1945-07-17	1945-09-05
1946	1946-06-15	1946-08-21
1947	1947-07-03	1947-09-07
1954	1954-05-20	1954-09-01
1955	1955-07-04	1955-09-14
1956	1956-06-09	1956-09-21
1957	1957-07-01	1957-08-15
1958	1958-07-24	1958-09-09
1959	1959-06-15	1959-09-15
1960	1960-06-26	1960-09-05
1961	1961-06-10	1961-08-30
1962	1962-07-03	1962-08-28
1963	1963-06-29	1963-08-28
1964	1964-05-22	1964-09-09
1965	1965-07-16	1965-08-14
1966	1966-06-21	1966-09-09
1967	1967-07-21	1967-09-04
1968	1968-06-04	1968-08-08
1969	1969-05-28	1969-09-05
1970	1970-06-28	1970-09-02
1971	1971-06-28	1971-09-03
1972	1972-05-25	1972-08-16
1973	1973-06-10	1973-09-01
1974	1974-06-20	1974-08-27
1975	1975-07-02	1975-09-01
1976	1976-06-11	1976-09-12
1977	1977-06-03	1977-09-06
1978	1978-07-17	1978-09-08
1980	1980-06-24	1980-09-08
1981	1981-06-24	1981-09-13
1984	1984-07-25	1984-07-25
1985	1985-06-07	1985-08-30
1987	1987-07-15	1987-09-03
1988	1988-06-07	1988-09-01
1989	1989-06-15	1989-08-30
1990	1990-06-24	1990-09-12
1991	1991-07-14	1991-08-28
1992	1992-08-08	1992-08-20
1993	1993-07-28	1993-07-30
1994	1994-06-18	1994-09-09
1996	1996-06-26	1996-08-12
1997	1997-06-22	1997-08-29
1998	1998-07-13	1998-09-11
1999	1999-07-05	1999-08-15
2000	2000-06-06	2000-09-18
2003	2003-05-29	2003-09-06
2007	2007-06-12	2007-08-27
2009	2009-05-20	2009-08-24
2010	2010-07-03	2010-08-28
2011	2011-06-06	2011-09-01
2012	2012-06-18	2012-09-11
2013	2013-07-11	2013-09-04
2014	2014-07-06	2014-07-25
2015	2015-07-26	2015-09-04
2016	2016-06-10	2016-08-23
2017	2017-07-05	2017-09-11
2018	2018-06-05	2018-09-13
2019	2019-06-29	2019-09-02
2020	2020-06-16	2020-09-05
2021	2021-06-05	2021-09-10
2022	2022-06-19	2022-09-08
2023	2023-07-23	2023-09-04
2024	2024-06-24	2024-09-30
2025	2025-06-21	2025-08-21
2026	2026-07-06	2026-08-11

Every Fixed Threshold

Fixed thresholds at Custer
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	49	1988	13
35 C (95 F): Days	24	7	1954	1
90 F (32.2 C): Days	62	25	1988	7
100 F (37.8 C): Days	1	1	1954	1
0 C (32 F): Ice days (max	67	71	1985	26
0 C (32 F): Frost days (min	69	250	1966	114
-10 C (14 F): Days with min	69	106	1944	21
-20 C (-4 F): Days with min	69	35	1955	5
-30 C (-22 F): Days with min	38	6	1962	1
-40 C (-40 F): Days with min	1	1	1963	1
20 C (68 F): Tropical nights (min	6	2	1946	1
10 mm (0.39 in): Days with 10 mm or more rain	89	23	1915	11
25 mm (0.98 in): Days with 25 mm or more rain	83	7	1923	2
50 mm (1.97 in): Days with 50 mm or more rain	27	2	1923	1
100 mm (3.94 in): Days with 100 mm or more rain	1	0	n/a	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	12	2018	1
25 cm (9.8 in): Days with 25 cm or more snowfall	10	3	1927	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2000	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

Data for Custer 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). Threshold counts are computed by this site.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Custer Threshold Days by Year (USC00392087)

Key Facts for Custer Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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