Duchesne Threshold Days by Year (USC00422253)

16 fixed thresholds counted per year at Duchesne (USC00422253): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Duchesne Thresholds

Duchesne: nights with a minimum temperature at or below 0 C (32 F) in 110 years, most in 1924 with 232.
Duchesne: nights with a minimum temperature at or below -10 C (14 F) in 110 years, most in 1952 with 108.
Duchesne: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1927 with 15.
Duchesne: days with a maximum temperature at or above 30 C (86 F) in 98 years, most in 2020 with 80.
16 fixed thresholds have at least one qualifying day at Duchesne.

Days at or above 30 C (86 F)

98 years with a qualifying day

Days per year at Duchesne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 2020.

Days at or above 30 C (86 F) per year at Duchesne
Year	Days	Decade average
1907	34	40
1908	35	40
1909	51	40
1910	60	40.9
1911	37	40.9
1912	18	40.9
1913	36	40.9
1914	35	40.9
1915	36	40.9
1916	29	40.9
1917	49	40.9
1918	38	40.9
1919	71	40.9
1920	39	41.1
1921	48	41.1
1922	51	41.1
1923	43	41.1
1924	60	41.1
1925	30	41.1
1926	42	41.1
1927	21	41.1
1928	35	41.1
1929	42	41.1
1930	28	49.6
1931	62	49.6
1932	43	49.6
1933	60	49.6
1934	65	49.6
1935	53	49.6
1936	53	49.6
1937	50	49.6
1938	31	49.6
1939	51	49.6
1940	70	44.8
1941	32	44.8
1942	40	44.8
1943	41	44.8
1944	49	44.8
1945	26	44.8
1946	50	44.8
1947	38	44.8
1948	59	44.8
1949	43	44.8
1950	46	56.5
1951	42	56.5
1952	43	56.5
1953	60	56.5
1954	58	56.5
1955	60	56.5
1956	56	56.5
1957	54	56.5
1958	79	56.5
1959	67	56.5
1960	68	54.3
1961	66	54.3
1962	64	54.3
1963	49	54.3
1964	58	54.3
1965	30	54.3
1966	57	54.3
1967	53	54.3
1968	40	54.3
1969	58	54.3
1971	70	61
1972	52	61
1981	69	55.1
1982	52	55.1
1983	50	55.1
1984	46	55.1
1985	68	55.1
1986	55	55.1
1989	46	55.1
1990	55	38.6
1991	26	38.6
1992	37	38.6
1993	29	38.6
1994	60	38.6
1995	32	38.6
1996	55	38.6
1997	24	38.6
1998	29	38.6
2002	61	56.5
2003	52	56.5
2012	47	56.4
2013	46	56.4
2014	28	56.4
2015	62	56.4
2016	60	56.4
2017	69	56.4
2018	79	56.4
2019	60	56.4
2020	80	70.4
2021	73	70.4
2022	73	70.4
2023	51	70.4
2024	71	70.4
2025	73	70.4
2026	72	70.4

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

First to last qualifying date each year at Duchesne
Year	First date	Last date
1907	1907-06-28	1907-08-23
1908	1908-07-04	1908-09-07
1909	1909-06-03	1909-08-27
1910	1910-05-29	1910-09-10
1911	1911-06-11	1911-09-11
1912	1912-06-04	1912-08-26
1913	1913-06-20	1913-08-29
1914	1914-06-17	1914-09-19
1915	1915-06-23	1915-09-22
1916	1916-06-09	1916-08-28
1917	1917-06-16	1917-09-03
1918	1918-06-06	1918-09-13
1919	1919-05-26	1919-09-17
1920	1920-06-07	1920-08-17
1921	1921-06-08	1921-08-20
1922	1922-06-07	1922-09-17
1923	1923-06-11	1923-09-15
1924	1924-05-16	1924-09-07
1925	1925-05-29	1925-08-22
1926	1926-06-04	1926-09-20
1927	1927-05-01	1927-08-05
1928	1928-06-25	1928-09-07
1929	1929-06-21	1929-08-31
1930	1930-05-26	1930-09-20
1931	1931-06-06	1931-09-09
1932	1932-06-21	1932-08-25
1933	1933-06-09	1933-09-29
1934	1934-05-07	1934-09-18
1935	1935-06-07	1935-09-19
1936	1936-05-13	1936-09-09
1937	1937-06-16	1937-09-12
1938	1938-06-04	1938-08-24
1939	1939-06-13	1939-09-02
1940	1940-05-31	1940-09-01
1941	1941-05-12	1941-08-29
1942	1942-06-17	1942-08-23
1943	1943-06-18	1943-09-17
1944	1944-05-08	1944-09-13
1945	1945-06-21	1945-09-06
1946	1946-06-03	1946-09-04
1947	1947-05-03	1947-09-26
1948	1948-05-16	1948-09-15
1949	1949-06-11	1949-09-22
1950	1950-06-16	1950-09-07
1951	1951-05-26	1951-09-07
1952	1952-06-09	1952-09-24
1953	1953-06-10	1953-09-22
1954	1954-05-18	1954-09-01
1955	1955-06-07	1955-09-14
1956	1956-05-31	1956-09-20
1957	1957-06-02	1957-09-08
1958	1958-05-19	1958-09-11
1959	1959-06-05	1959-09-10
1960	1960-05-12	1960-09-11
1961	1961-06-08	1961-08-28
1962	1962-06-10	1962-09-19
1963	1963-06-20	1963-09-12
1964	1964-05-19	1964-09-05
1965	1965-06-21	1965-08-28
1966	1966-05-07	1966-09-23
1967	1967-05-22	1967-09-05
1968	1968-06-03	1968-09-01
1969	1969-05-26	1969-09-29
1971	1971-06-14	1971-09-14
1972	1972-05-31	1972-08-23
1981	1981-06-05	1981-09-04
1982	1982-06-12	1982-09-09
1983	1983-06-17	1983-09-25
1984	1984-05-23	1984-09-06
1985	1985-06-06	1985-09-03
1986	1986-05-21	1986-09-06
1989	1989-05-07	1989-09-06
1990	1990-06-04	1990-09-15
1991	1991-06-11	1991-08-22
1992	1992-06-20	1992-08-21
1993	1993-06-15	1993-09-11
1994	1994-05-30	1994-08-27
1995	1995-06-14	1995-09-04
1996	1996-05-13	1996-09-04
1997	1997-06-04	1997-08-25
1998	1998-06-29	1998-09-04
2002	2002-05-18	2002-09-02
2003	2003-05-26	2003-08-21
2012	2012-06-01	2012-08-29
2013	2013-05-14	2013-09-05
2014	2014-05-27	2014-09-04
2015	2015-05-31	2015-09-26
2016	2016-06-03	2016-09-01
2017	2017-06-03	2017-09-12
2018	2018-06-03	2018-09-18
2019	2019-06-26	2019-09-05
2020	2020-05-28	2020-09-07
2021	2021-06-02	2021-09-10
2022	2022-05-27	2022-09-12
2023	2023-06-25	2023-09-09
2024	2024-06-05	2024-09-29
2025	2025-05-30	2025-09-04
2026	2026-03-25	2026-09-14

Every Fixed Threshold

Fixed thresholds at Duchesne
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	98	80	2020	72
35 C (95 F): Days	62	16	1940	17
90 F (32.2 C): Days	98	52	1940	48
100 F (37.8 C): Days	3	1	1985	2
0 C (32 F): Ice days (max	97	79	2013	13
0 C (32 F): Frost days (min	110	232	1924	84
-10 C (14 F): Days with min	110	108	1952	17
-20 C (-4 F): Days with min	97	61	1930	4
-30 C (-22 F): Days with min	34	13	1937	1
-40 C (-40 F): Days with min	2	1	1933	1
20 C (68 F): Tropical nights (min	10	4	1918	1
10 mm (0.39 in): Days with 10 mm or more rain	109	15	1927	4
25 mm (0.98 in): Days with 25 mm or more rain	37	4	1927	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1937	1
10 cm (3.9 in): Days with 10 cm or more snowfall	73	8	1997	2
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	1927	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Duchesne Threshold Days by Year (USC00422253)

Key Facts for Duchesne Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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