Custer Threshold Days by Year (USW00024040)

17 fixed thresholds counted per year at Custer (USW00024040): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Custer Thresholds

Custer: days with a maximum temperature at or above 30 C (86 F) in 19 years, most in 1966 with 83.
Custer: days with a maximum temperature at or above 35 C (95 F) in 19 years, most in 1966 with 29.
Custer: days with a maximum temperature at or above 90 F (32.2 C) in 19 years, most in 1966 with 61.
Custer: days with a maximum temperature at or below 0 C (32 F) in 19 years, most in 1949 with 72.
17 fixed thresholds have at least one qualifying day at Custer.

Days at or above 30 C (86 F)

19 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 83 in 1966.

Days at or above 30 C (86 F) per year at Custer
Year	Days	Decade average
1942	50	53
1943	54	53
1944	39	53
1945	54	53
1946	54	53
1948	57	53
1949	63	53
1963	70	63.7
1964	59	63.7
1965	46	63.7
1966	83	63.7
1967	73	63.7
1968	52	63.7
1969	63	63.7
1970	70	66.2
1971	71	66.2
1972	62	66.2
1973	63	66.2
1974	65	66.2

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
1942	1942-07-02	1942-10-09
1943	1943-04-23	1943-10-08
1944	1944-05-13	1944-09-13
1945	1945-06-21	1945-09-13
1946	1946-04-26	1946-09-30
1948	1948-04-29	1948-10-03
1949	1949-04-28	1949-09-24
1963	1963-05-31	1963-10-04
1964	1964-05-16	1964-10-14
1965	1965-05-30	1965-10-09
1966	1966-05-04	1966-09-24
1967	1967-05-23	1967-09-30
1968	1968-04-30	1968-09-18
1969	1969-05-24	1969-09-18
1970	1970-05-17	1970-10-04
1971	1971-05-13	1971-09-12
1972	1972-05-16	1972-09-18
1973	1973-05-19	1973-09-12
1974	1974-04-25	1974-10-02

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	19	83	1966	65
35 C (95 F): Days	19	29	1966	20
40 C (104 F): Days	3	3	1949	2
90 F (32.2 C): Days	19	61	1966	44
100 F (37.8 C): Days	15	8	1948	2
0 C (32 F): Ice days (max	19	72	1949	18
0 C (32 F): Frost days (min	18	193	1970	174
-10 C (14 F): Days with min	18	87	1949	41
-20 C (-4 F): Days with min	18	49	1949	10
-30 C (-22 F): Days with min	17	10	1949	1
-40 C (-40 F): Days with min	1	1	1969	1
20 C (68 F): Tropical nights (min	7	3	1971	1
10 mm (0.39 in): Days with 10 mm or more rain	17	14	1968	9
25 mm (0.98 in): Days with 25 mm or more rain	12	3	1964	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	5	1967	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1970	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Custer Threshold Days by Year (USW00024040)

Key Facts for Custer Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related