Ft Duchesne Threshold Days by Year (USC00422996)

18 fixed thresholds counted per year at Ft Duchesne (USC00422996): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ft Duchesne Thresholds

Ft Duchesne: days with a maximum temperature at or above 30 C (86 F) in 99 years, most in 2018 with 112.
Ft Duchesne: days with a maximum temperature at or above 90 F (32.2 C) in 99 years, most in 2020 with 80.
Ft Duchesne: days with a maximum temperature at or below 0 C (32 F) in 99 years, most in 2013 with 92.
Ft Duchesne: days with a maximum temperature at or above 35 C (95 F) in 96 years, most in 2020 with 55.
18 fixed thresholds have at least one qualifying day at Ft Duchesne.

Days at or above 30 C (86 F)

99 years with a qualifying day

Days per year at Ft Duchesne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 2018.

Days at or above 30 C (86 F) per year at Ft Duchesne
Year	Days	Decade average
1888	66	76.5
1889	87	76.5
1903	63	69.8
1905	88	69.8
1906	58	69.8
1908	64	69.8
1909	76	69.8
1910	103	70.1
1911	81	70.1
1913	54	70.1
1914	65	70.1
1915	58	70.1
1917	66	70.1
1918	64	70.1
1921	67	53
1922	77	53
1923	43	53
1924	76	53
1925	46	53
1926	29	53
1927	32	53
1928	56	53
1929	51	53
1930	55	68.5
1931	37	68.5
1932	67	68.5
1933	84	68.5
1934	93	68.5
1935	83	68.5
1936	83	68.5
1937	67	68.5
1938	59	68.5
1939	57	68.5
1941	43	66.7
1942	54	66.7
1943	68	66.7
1944	69	66.7
1945	69	66.7
1946	77	66.7
1947	61	66.7
1948	81	66.7
1949	78	66.7
1950	63	72
1951	63	72
1953	81	72
1954	76	72
1955	60	72
1956	74	72
1957	65	72
1958	90	72
1959	76	72
1960	73	65.1
1961	74	65.1
1962	80	65.1
1963	68	65.1
1964	67	65.1
1965	35	65.1
1966	71	65.1
1967	65	65.1
1968	51	65.1
1969	67	65.1
1970	74	67
1971	75	67
1972	54	67
1973	53	67
1974	82	67
1977	64	67
1981	65	71.7
1982	65	71.7
1983	66	71.7
1984	73	71.7
1985	74	71.7
1986	72	71.7
1987	66	71.7
1988	91	71.7
1989	73	71.7
1991	75	71.7
1992	61	71.7
1993	56	71.7
1994	94	71.7
1995	70	71.7
1998	76	71.7
1999	70	71.7
2006	84	88.5
2007	93	88.5
2011	52	84.3
2012	95	84.3
2013	87	84.3
2014	71	84.3
2015	81	84.3
2016	85	84.3
2017	92	84.3
2018	112	84.3
2019	84	84.3
2020	96	89.2
2021	93	89.2
2022	91	89.2
2023	70	89.2
2024	96	89.2

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

First to last qualifying date each year at Ft Duchesne
Year	First date	Last date
1888	1888-06-01	1888-09-23
1889	1889-05-22	1889-09-12
1903	1903-06-18	1903-09-05
1905	1905-05-31	1905-09-23
1906	1906-05-19	1906-09-12
1908	1908-06-12	1908-09-18
1909	1909-06-03	1909-09-03
1910	1910-04-27	1910-10-09
1911	1911-05-05	1911-09-15
1913	1913-05-23	1913-09-22
1914	1914-05-30	1914-09-19
1915	1915-06-09	1915-09-23
1917	1917-06-15	1917-09-04
1918	1918-06-06	1918-09-21
1921	1921-05-27	1921-09-25
1922	1922-06-05	1922-10-04
1923	1923-07-05	1923-09-08
1924	1924-05-16	1924-09-08
1925	1925-05-20	1925-08-25
1926	1926-06-08	1926-09-20
1927	1927-05-15	1927-08-24
1928	1928-05-28	1928-09-08
1929	1929-06-14	1929-08-31
1930	1930-05-26	1930-09-18
1931	1931-06-21	1931-09-08
1932	1932-05-21	1932-09-17
1933	1933-05-21	1933-09-29
1934	1934-04-30	1934-09-19
1935	1935-06-07	1935-09-20
1936	1936-05-05	1936-09-13
1937	1937-05-14	1937-09-19
1938	1938-05-26	1938-08-29
1939	1939-06-12	1939-09-03
1941	1941-05-12	1941-08-27
1942	1942-06-07	1942-09-09
1943	1943-05-28	1943-09-17
1944	1944-06-20	1944-09-14
1945	1945-06-19	1945-09-11
1946	1946-06-03	1946-09-26
1947	1947-05-03	1947-09-22
1948	1948-05-16	1948-09-16
1949	1949-06-11	1949-09-25
1950	1950-06-06	1950-09-06
1951	1951-05-26	1951-09-15
1953	1953-06-09	1953-09-26
1954	1954-05-08	1954-09-10
1955	1955-06-07	1955-09-15
1956	1956-05-20	1956-09-21
1957	1957-06-03	1957-10-01
1958	1958-05-20	1958-09-23
1959	1959-05-13	1959-09-13
1960	1960-05-12	1960-09-13
1961	1961-05-28	1961-08-29
1962	1962-05-10	1962-09-20
1963	1963-06-02	1963-10-01
1964	1964-05-17	1964-09-10
1965	1965-06-23	1965-08-30
1966	1966-05-07	1966-09-24
1967	1967-05-23	1967-09-08
1968	1968-05-30	1968-09-11
1969	1969-05-26	1969-09-08
1970	1970-05-18	1970-09-12
1971	1971-06-15	1971-09-14
1972	1972-05-17	1972-08-31
1973	1973-05-18	1973-09-08
1974	1974-05-09	1974-09-11
1977	1977-06-01	1977-08-19
1981	1981-05-02	1981-09-20
1982	1982-05-27	1982-09-24
1983	1983-05-27	1983-09-19
1984	1984-05-15	1984-09-16
1985	1985-06-07	1985-09-02
1986	1986-05-21	1986-09-07
1987	1987-05-16	1987-09-10
1988	1988-05-14	1988-09-12
1989	1989-05-07	1989-09-08
1991	1991-06-05	1991-09-10
1992	1992-04-28	1992-08-30
1993	1993-05-27	1993-09-12
1994	1994-05-23	1994-09-29
1995	1995-06-13	1995-09-18
1998	1998-06-03	1998-09-20
1999	1999-05-23	1999-10-07
2006	2006-05-18	2006-09-14
2007	2007-05-12	2007-09-24
2011	2011-06-06	2011-09-08
2012	2012-04-24	2012-09-17
2013	2013-05-14	2013-09-08
2014	2014-05-04	2014-09-27
2015	2015-06-02	2015-09-28
2016	2016-06-03	2016-09-20
2017	2017-05-25	2017-09-14
2018	2018-05-08	2018-09-30
2019	2019-06-06	2019-09-27
2020	2020-05-19	2020-10-15
2021	2021-05-09	2021-09-18
2022	2022-05-17	2022-09-14
2023	2023-06-20	2023-09-10
2024	2024-05-30	2024-10-01

Every Fixed Threshold

Fixed thresholds at Ft Duchesne
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	99	112	2018	96
35 C (95 F): Days	96	55	2020	32
40 C (104 F): Days	8	4	2021	1
90 F (32.2 C): Days	99	80	2020	72
100 F (37.8 C): Days	39	13	2021	8
0 C (32 F): Ice days (max	99	92	2013	7
0 C (32 F): Frost days (min	94	233	1924	170
-10 C (14 F): Days with min	94	118	1942	45
-20 C (-4 F): Days with min	86	62	1930	26
-30 C (-22 F): Days with min	34	16	1949	2
-40 C (-40 F): Days with min	1	1	1937	1
20 C (68 F): Tropical nights (min	15	6	1999	1
10 mm (0.39 in): Days with 10 mm or more rain	86	11	1957	2
25 mm (0.98 in): Days with 25 mm or more rain	24	2	1905	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1905	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1905	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	4	1948	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1888.

Download the Data

Data for Ft Duchesne 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Ft Duchesne Threshold Days by Year (USC00422996)

Key Facts for Ft Duchesne Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related