Hankinson Threshold Days by Year

19 fixed thresholds counted per year at Hankinson (USC00323908): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hankinson Thresholds

Hankinson: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1988 with 73.
Hankinson: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1934 with 48.
Hankinson: days with a maximum temperature at or below 0 C (32 F) in 60 years, most in 1955 with 113.
Hankinson: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1945 with 213.
19 fixed thresholds have at least one qualifying day at Hankinson.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Hankinson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 73 in 1988.

Days at or above 30 C (86 F) per year at Hankinson
Year	Days	Decade average
1930	55	55.7
1931	56	55.7
1932	54	55.7
1933	47	55.7
1934	72	55.7
1935	47	55.7
1936	64	55.7
1937	56	55.7
1938	53	55.7
1939	53	55.7
1940	47	37.7
1941	46	37.7
1942	20	37.7
1943	38	37.7
1944	31	37.7
1945	32	37.7
1946	30	37.7
1947	50	37.7
1949	45	37.7
1950	25	26.9
1951	14	26.9
1952	40	26.9
1953	27	26.9
1954	17	26.9
1955	39	26.9
1956	17	26.9
1957	18	26.9
1959	45	26.9
1960	28	25.8
1961	38	25.8
1962	14	25.8
1963	23	25.8
1964	34	25.8
1965	7	25.8
1966	36	25.8
1967	19	25.8
1968	25	25.8
1969	34	25.8
1970	49	39.1
1971	28	39.1
1972	37	39.1
1974	42	39.1
1975	45	39.1
1976	61	39.1
1977	28	39.1
1978	36	39.1
1979	26	39.1
1980	50	42.8
1981	27	42.8
1982	35	42.8
1983	53	42.8
1984	39	42.8
1985	22	42.8
1986	28	42.8
1987	53	42.8
1988	73	42.8
1989	48	42.8
1990	44	33.3
1991	38	33.3
1992	18	33.3

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

First to last qualifying date each year at Hankinson
Year	First date	Last date
1930	1930-05-03	1930-09-21
1931	1931-04-11	1931-10-02
1932	1932-05-13	1932-09-08
1933	1933-06-01	1933-09-04
1934	1934-04-28	1934-10-13
1935	1935-06-09	1935-09-24
1936	1936-05-06	1936-10-08
1937	1937-05-28	1937-10-03
1938	1938-06-05	1938-10-09
1939	1939-05-05	1939-09-18
1940	1940-05-12	1940-09-22
1941	1941-05-13	1941-09-20
1942	1942-05-28	1942-09-11
1943	1943-05-29	1943-10-12
1944	1944-05-30	1944-09-17
1945	1945-06-21	1945-09-06
1946	1946-05-28	1946-09-16
1947	1947-06-26	1947-10-21
1949	1949-05-04	1949-09-25
1950	1950-05-23	1950-09-08
1951	1951-05-25	1951-08-03
1952	1952-04-28	1952-09-30
1953	1953-05-30	1953-10-03
1954	1954-06-24	1954-09-02
1955	1955-05-03	1955-10-11
1956	1956-05-22	1956-09-28
1957	1957-07-02	1957-09-01
1959	1959-05-02	1959-09-12
1960	1960-06-27	1960-09-07
1961	1961-06-01	1961-10-07
1962	1962-04-25	1962-10-15
1963	1963-05-08	1963-10-06
1964	1964-05-21	1964-09-10
1965	1965-06-20	1965-08-14
1966	1966-05-22	1966-09-13
1967	1967-06-30	1967-09-26
1968	1968-05-01	1968-09-15
1969	1969-05-15	1969-09-15
1970	1970-05-18	1970-10-06
1971	1971-05-15	1971-09-14
1972	1972-05-17	1972-09-20
1974	1974-06-04	1974-10-11
1975	1975-05-17	1975-10-08
1976	1976-06-05	1976-10-04
1977	1977-04-10	1977-09-09
1978	1978-05-26	1978-09-11
1979	1979-05-29	1979-09-28
1980	1980-04-21	1980-10-08
1981	1981-05-23	1981-09-13
1982	1982-05-04	1982-09-11
1983	1983-06-10	1983-09-28
1984	1984-05-17	1984-09-22
1985	1985-04-19	1985-08-09
1986	1986-05-30	1986-08-20
1987	1987-04-19	1987-09-27
1988	1988-05-13	1988-09-18
1989	1989-06-07	1989-10-26
1990	1990-04-23	1990-09-27
1991	1991-04-07	1991-10-17
1992	1992-05-01	1992-10-02

Every Fixed Threshold

Fixed thresholds at Hankinson
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	73	1988	18
35 C (95 F): Days	54	34	1936	6
40 C (104 F): Days	15	11	1931	1
90 F (32.2 C): Days	60	48	1934	12
100 F (37.8 C): Days	31	17	1936	1
110 F (43.3 C): Days	2	2	1936	2
0 C (32 F): Ice days (max	60	113	1955	77
0 C (32 F): Frost days (min	59	213	1945	187
-10 C (14 F): Days with min	59	125	1955	87
-20 C (-4 F): Days with min	59	71	1978	35
-30 C (-22 F): Days with min	50	18	1936	7
20 C (68 F): Tropical nights (min	56	15	1931	7
25 C (77 F): Days with min	6	2	1931	1
10 mm (0.39 in): Days with 10 mm or more rain	56	30	1986	16
25 mm (0.98 in): Days with 25 mm or more rain	53	8	1942	4
50 mm (1.97 in): Days with 50 mm or more rain	22	3	1975	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	30	6	1952	6
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1952	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

Data for Hankinson 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Hankinson Threshold Days by Year

Key Facts for Hankinson Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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