Denison Threshold Days by Year (USC00132171)

21 fixed thresholds counted per year at Denison (USC00132171): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Denison Thresholds

Denison: nights with a minimum temperature at or below 0 C (32 F) in 127 years, most in 2013 with 183.
Denison: nights with a minimum temperature at or below -10 C (14 F) in 127 years, most in 1978 with 77.
Denison: nights with a minimum temperature at or below -20 C (-4 F) in 127 years, most in 1936 with 32.
Denison: days with a maximum temperature at or below 0 C (32 F) in 126 years, most in 1978 with 96.
21 fixed thresholds have at least one qualifying day at Denison.

Days at or above 30 C (86 F)

125 years with a qualifying day

Days per year at Denison with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 1936.

Days at or above 30 C (86 F) per year at Denison
Year	Days	Decade average
1896	43	42.7
1897	44	42.7
1899	41	42.7
1900	52	37.3
1901	72	37.3
1902	17	37.3
1903	5	37.3
1904	24	37.3
1905	40	37.3
1906	41	37.3
1907	40	37.3
1908	39	37.3
1909	43	37.3
1910	44	51
1911	66	51
1912	43	51
1913	65	51
1914	49	51
1915	11	51
1916	55	51
1918	70	51
1919	56	51
1920	37	44.3
1921	64	44.3
1922	59	44.3
1923	38	44.3
1924	20	44.3
1925	59	44.3
1926	39	44.3
1927	54	44.3
1928	36	44.3
1929	37	44.3
1930	72	71.7
1931	80	71.7
1932	53	71.7
1933	75	71.7
1934	82	71.7
1935	64	71.7
1936	89	71.7
1937	71	71.7
1938	65	71.7
1939	66	71.7
1940	45	46.1
1941	55	46.1
1942	36	46.1
1943	50	46.1
1944	43	46.1
1945	29	46.1
1946	34	46.1
1947	56	46.1
1948	54	46.1
1949	59	46.1
1950	20	41
1951	20	41
1952	40	41
1953	51	41
1954	54	41
1955	60	41
1956	53	41
1957	37	41
1958	26	41
1959	49	41
1960	32	32.3
1961	31	32.3
1962	33	32.3
1964	39	32.3
1965	26	32.3
1966	33	32.3
1967	27	32.3
1968	39	32.3
1969	31	32.3
1970	53	42.3
1971	45	42.3
1972	34	42.3
1973	34	42.3
1974	38	42.3
1975	53	42.3
1976	63	42.3
1977	43	42.3
1978	35	42.3
1979	25	42.3
1980	45	44.2
1981	34	44.2
1983	62	44.2
1984	44	44.2
1985	36	44.2
1986	38	44.2
1987	58	44.2
1988	52	44.2
1989	29	44.2
1990	38	31.1
1991	42	31.1
1992	10	31.1
1993	11	31.1
1994	24	31.1
1995	53	31.1
1996	15	31.1
1997	44	31.1
1998	38	31.1
1999	36	31.1
2000	42	39.7
2001	40	39.7
2002	54	39.7
2003	40	39.7
2004	25	39.7
2005	55	39.7
2006	46	39.7
2007	46	39.7
2008	28	39.7
2009	21	39.7
2010	27	34.9
2011	34	34.9
2012	67	34.9
2013	33	34.9
2014	10	34.9
2015	22	34.9
2016	40	34.9
2017	43	34.9
2018	43	34.9
2019	30	34.9
2020	59	54.8
2021	62	54.8
2022	58	54.8
2023	52	54.8
2024	43	54.8

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

First to last qualifying date each year at Denison
Year	First date	Last date
1896	1896-05-06	1896-08-15
1897	1897-06-12	1897-10-06
1899	1899-06-12	1899-10-22
1900	1900-05-11	1900-09-09
1901	1901-04-29	1901-09-06
1902	1902-04-20	1902-09-02
1903	1903-06-30	1903-08-24
1904	1904-05-22	1904-09-28
1905	1905-06-03	1905-10-05
1906	1906-04-24	1906-09-15
1907	1907-03-26	1907-09-18
1908	1908-05-27	1908-09-23
1909	1909-05-05	1909-10-02
1910	1910-03-23	1910-09-30
1911	1911-05-09	1911-09-17
1912	1912-05-26	1912-09-10
1913	1913-05-29	1913-09-07
1914	1914-05-25	1914-09-28
1915	1915-04-28	1915-08-06
1916	1916-04-12	1916-10-07
1918	1918-05-03	1918-10-17
1919	1919-05-30	1919-09-20
1920	1920-05-22	1920-10-10
1921	1921-05-20	1921-09-23
1922	1922-06-06	1922-10-27
1923	1923-06-01	1923-09-05
1924	1924-05-05	1924-08-30
1925	1925-04-22	1925-09-20
1926	1926-04-29	1926-09-17
1927	1927-04-26	1927-09-17
1928	1928-05-09	1928-10-11
1929	1929-04-04	1929-09-03
1930	1930-04-10	1930-10-10
1931	1931-04-08	1931-10-10
1932	1932-05-13	1932-10-02
1933	1933-05-16	1933-09-25
1934	1934-05-05	1934-10-12
1935	1935-06-12	1935-09-24
1936	1936-05-05	1936-09-22
1937	1937-05-20	1937-10-29
1938	1938-06-21	1938-10-16
1939	1939-04-24	1939-09-28
1940	1940-05-12	1940-09-22
1941	1941-05-14	1941-09-21
1942	1942-05-28	1942-09-16
1943	1943-05-28	1943-09-05
1944	1944-05-14	1944-09-17
1945	1945-06-27	1945-09-23
1946	1946-06-06	1946-09-05
1947	1947-06-09	1947-10-21
1948	1948-04-18	1948-09-19
1949	1949-04-25	1949-09-20
1950	1950-04-22	1950-09-18
1951	1951-06-17	1951-10-01
1952	1952-05-03	1952-09-30
1953	1953-05-25	1953-10-02
1954	1954-04-14	1954-09-27
1955	1955-05-02	1955-09-17
1956	1956-05-18	1956-10-12
1957	1957-06-04	1957-09-01
1958	1958-05-11	1958-09-24
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-10-11
1961	1961-04-20	1961-09-10
1962	1962-05-04	1962-09-12
1964	1964-04-16	1964-09-09
1965	1965-04-30	1965-08-26
1966	1966-05-05	1966-08-31
1967	1967-05-18	1967-08-29
1968	1968-05-02	1968-08-23
1969	1969-05-27	1969-10-03
1970	1970-04-28	1970-09-29
1971	1971-06-03	1971-09-27
1972	1972-04-06	1972-09-19
1973	1973-05-21	1973-08-30
1974	1974-06-14	1974-08-26
1975	1975-05-18	1975-10-13
1976	1976-05-20	1976-10-03
1977	1977-04-09	1977-09-06
1978	1978-06-10	1978-09-11
1979	1979-05-29	1979-09-10
1980	1980-04-20	1980-09-19
1981	1981-04-25	1981-09-30
1983	1983-06-23	1983-09-17
1984	1984-06-22	1984-09-20
1985	1985-04-18	1985-09-18
1986	1986-03-29	1986-09-26
1987	1987-04-19	1987-09-26
1988	1988-05-14	1988-09-17
1989	1989-04-24	1989-08-31
1990	1990-06-11	1990-09-26
1991	1991-04-06	1991-09-13
1992	1992-04-30	1992-08-09
1993	1993-05-27	1993-09-12
1994	1994-04-18	1994-09-30
1995	1995-06-15	1995-10-12
1996	1996-04-11	1996-08-06
1997	1997-06-19	1997-10-07
1998	1998-05-19	1998-09-27
1999	1999-06-06	1999-09-24
2000	2000-05-12	2000-09-19
2001	2001-04-27	2001-10-03
2002	2002-04-16	2002-10-01
2003	2003-04-02	2003-10-20
2004	2004-04-17	2004-09-20
2005	2005-06-07	2005-10-05
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-09-21
2008	2008-05-26	2008-09-02
2009	2009-04-24	2009-08-15
2010	2010-04-02	2010-10-09
2011	2011-05-10	2011-09-12
2012	2012-04-02	2012-09-12
2013	2013-05-15	2013-09-19
2014	2014-05-08	2014-09-05
2015	2015-06-10	2015-10-12
2016	2016-06-10	2016-09-24
2017	2017-05-09	2017-09-25
2018	2018-05-09	2018-10-04
2019	2019-04-22	2019-10-01
2020	2020-05-02	2020-09-27
2021	2021-04-27	2021-09-29
2022	2022-05-10	2022-09-21
2023	2023-04-12	2023-10-02
2024	2024-05-20	2024-10-06

Every Fixed Threshold

Fixed thresholds at Denison
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	125	89	1936	43
35 C (95 F): Days	94	49	1936	4
40 C (104 F): Days	12	19	1936	1
90 F (32.2 C): Days	123	70	1936	14
100 F (37.8 C): Days	38	29	1936	2
110 F (43.3 C): Days	3	4	1936	4
0 C (32 F): Ice days (max	126	96	1978	36
0 C (32 F): Frost days (min	127	183	2013	82
-10 C (14 F): Days with min	127	77	1978	43
-20 C (-4 F): Days with min	127	32	1936	14
-30 C (-22 F): Days with min	39	7	1905	1
-40 C (-40 F): Days with min	1	1	1912	1
20 C (68 F): Tropical nights (min	126	43	1936	19
25 C (77 F): Days with min	23	6	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	123	40	2014	2
25 mm (0.98 in): Days with 25 mm or more rain	122	14	1909	6
50 mm (1.97 in): Days with 50 mm or more rain	83	7	2014	1
100 mm (3.94 in): Days with 100 mm or more rain	15	1	1907	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1993	1
10 cm (3.9 in): Days with 10 cm or more snowfall	81	7	1961	2
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	2009	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Denison 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).

Denison Threshold Days by Year (USC00132171)

Key Facts for Denison Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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