Clarksville Wwtp Threshold Days by Year (USC00401790)

17 fixed thresholds counted per year at Clarksville Wwtp (USC00401790): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarksville Wwtp Thresholds

Clarksville Wwtp: days with a maximum temperature at or above 30 C (86 F) in 127 years, most in 1941 with 136.
Clarksville Wwtp: days with a maximum temperature at or above 90 F (32.2 C) in 127 years, most in 1925 with 104.
Clarksville Wwtp: days with a maximum temperature at or below 0 C (32 F) in 126 years, most in 1978 with 28.
Clarksville Wwtp: nights with a minimum temperature at or below 0 C (32 F) in 125 years, most in 1968 with 112.
17 fixed thresholds have at least one qualifying day at Clarksville Wwtp.

Days at or above 30 C (86 F)

127 years with a qualifying day

Days per year at Clarksville Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 136 in 1941.

Days at or above 30 C (86 F) per year at Clarksville Wwtp
Year	Days	Decade average
1893	62	73.3
1894	84	73.3
1898	74	73.3
1900	74	78.9
1901	72	78.9
1902	90	78.9
1903	75	78.9
1904	78	78.9
1905	65	78.9
1906	87	78.9
1907	74	78.9
1908	97	78.9
1909	77	78.9
1910	79	97.2
1911	98	97.2
1912	74	97.2
1913	116	97.2
1914	121	97.2
1915	101	97.2
1916	90	97.2
1917	62	97.2
1918	112	97.2
1919	119	97.2
1920	109	106.2
1921	133	106.2
1922	124	106.2
1923	89	106.2
1924	100	106.2
1925	123	106.2
1926	90	106.2
1927	103	106.2
1928	92	106.2
1929	99	106.2
1930	114	108.3
1931	111	108.3
1932	105	108.3
1933	113	108.3
1934	114	108.3
1935	100	108.3
1936	116	108.3
1937	97	108.3
1938	87	108.3
1939	126	108.3
1940	100	111.5
1941	136	111.5
1942	112	111.5
1943	114	111.5
1944	109	111.5
1945	106	111.5
1946	108	111.5
1947	116	111.5
1948	113	111.5
1949	101	111.5
1950	93	105.9
1951	117	105.9
1952	122	105.9
1953	136	105.9
1954	117	105.9
1955	107	105.9
1956	105	105.9
1957	82	105.9
1958	88	105.9
1959	92	105.9
1960	88	89.8
1961	65	89.8
1962	86	89.8
1963	100	89.8
1964	96	89.8
1965	99	89.8
1966	80	89.8
1968	94	89.8
1969	100	89.8
1970	99	84.5
1971	90	84.5
1972	93	84.5
1973	91	84.5
1974	66	84.5
1975	93	84.5
1976	57	84.5
1977	105	84.5
1978	96	84.5
1979	55	84.5
1980	104	86.5
1981	64	86.5
1982	50	86.5
1983	81	86.5
1984	81	86.5
1985	89	86.5
1986	113	86.5
1987	101	86.5
1988	98	86.5
1989	84	86.5
1990	89	87
1991	97	87
1992	64	87
1993	97	87
1994	63	87
1995	96	87
1996	80	87
1997	71	87
1998	114	87
1999	99	87
2000	89	90.7
2001	84	90.7
2002	108	90.7
2003	66	90.7
2004	63	90.7
2005	106	90.7
2006	96	90.7
2007	133	90.7
2008	97	90.7
2009	65	90.7
2011	96	97.1
2012	98	97.1
2013	87	97.1
2015	81	97.1
2016	94	97.1
2017	85	97.1
2018	120	97.1
2019	116	97.1
2020	84	101.4
2021	83	101.4
2022	107	101.4
2023	99	101.4
2024	116	101.4
2025	114	101.4
2026	107	101.4

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

First to last qualifying date each year at Clarksville Wwtp
Year	First date	Last date
1893	1893-04-08	1893-09-22
1894	1894-04-28	1894-10-02
1898	1898-05-15	1898-10-05
1900	1900-05-13	1900-10-03
1901	1901-05-01	1901-09-12
1902	1902-04-21	1902-09-08
1903	1903-05-22	1903-10-04
1904	1904-05-21	1904-10-10
1905	1905-04-28	1905-09-28
1906	1906-04-12	1906-09-19
1907	1907-03-21	1907-10-03
1908	1908-03-18	1908-10-20
1909	1909-05-06	1909-10-22
1910	1910-03-24	1910-10-03
1911	1911-03-11	1911-10-06
1912	1912-05-05	1912-10-09
1913	1913-04-18	1913-10-10
1914	1914-04-17	1914-10-07
1915	1915-04-19	1915-09-27
1916	1916-05-06	1916-10-09
1917	1917-04-17	1917-10-17
1918	1918-05-05	1918-10-10
1919	1919-04-06	1919-10-26
1920	1920-04-18	1920-10-23
1921	1921-03-15	1921-10-26
1922	1922-04-06	1922-10-31
1923	1923-04-22	1923-10-13
1924	1924-04-15	1924-10-19
1925	1925-04-13	1925-10-04
1926	1926-04-30	1926-10-04
1927	1927-04-04	1927-10-30
1928	1928-03-26	1928-10-16
1929	1929-03-24	1929-09-27
1930	1930-04-10	1930-10-11
1931	1931-04-16	1931-10-13
1932	1932-04-04	1932-09-18
1933	1933-05-01	1933-10-30
1934	1934-04-03	1934-10-24
1935	1935-03-23	1935-10-31
1936	1936-04-14	1936-09-28
1937	1937-04-17	1937-10-06
1938	1938-05-02	1938-10-18
1939	1939-04-24	1939-10-23
1940	1940-04-01	1940-10-28
1941	1941-04-12	1941-10-22
1942	1942-03-15	1942-10-08
1943	1943-04-08	1943-10-20
1944	1944-05-11	1944-10-06
1945	1945-03-16	1945-09-30
1946	1946-04-01	1946-11-02
1947	1947-04-10	1947-10-24
1948	1948-04-07	1948-09-22
1949	1949-05-04	1949-10-20
1950	1950-04-24	1950-10-31
1951	1951-04-25	1951-10-18
1952	1952-04-09	1952-10-01
1953	1953-04-09	1953-10-23
1954	1954-04-07	1954-10-12
1955	1955-04-05	1955-10-06
1956	1956-04-27	1956-09-30
1957	1957-04-19	1957-09-11
1958	1958-04-23	1958-09-26
1959	1959-05-01	1959-10-04
1960	1960-04-13	1960-09-09
1961	1961-04-23	1961-09-24
1962	1962-04-27	1962-09-13
1963	1963-03-31	1963-10-28
1964	1964-04-21	1964-09-22
1965	1965-04-23	1965-10-18
1966	1966-05-07	1966-09-11
1968	1968-05-02	1968-10-02
1969	1969-04-17	1969-10-13
1970	1970-04-23	1970-10-03
1971	1971-04-20	1971-11-02
1972	1972-04-20	1972-09-27
1973	1973-05-11	1973-10-15
1974	1974-05-18	1974-09-20
1975	1975-04-28	1975-10-15
1976	1976-04-20	1976-09-26
1977	1977-04-13	1977-09-24
1978	1978-04-09	1978-09-22
1979	1979-05-11	1979-10-22
1980	1980-04-23	1980-10-11
1981	1981-04-01	1981-10-01
1982	1982-05-13	1982-09-14
1983	1983-06-13	1983-09-19
1984	1984-04-25	1984-09-25
1985	1985-04-18	1985-10-13
1986	1986-04-03	1986-10-03
1987	1987-04-20	1987-09-28
1988	1988-04-05	1988-09-22
1989	1989-04-23	1989-10-14
1990	1990-04-23	1990-09-29
1991	1991-05-14	1991-10-04
1992	1992-04-14	1992-09-21
1993	1993-05-06	1993-09-22
1994	1994-04-18	1994-09-30
1995	1995-04-09	1995-09-15
1996	1996-05-08	1996-09-11
1997	1997-04-30	1997-10-07
1998	1998-03-30	1998-10-04
1999	1999-04-10	1999-09-28
2000	2000-05-06	2000-10-23
2001	2001-04-07	2001-09-23
2002	2002-04-15	2002-10-02
2003	2003-04-14	2003-09-14
2004	2004-04-18	2004-09-15
2005	2005-05-10	2005-10-20
2006	2006-04-13	2006-10-04
2007	2007-03-25	2007-10-17
2008	2008-04-25	2008-10-11
2009	2009-04-23	2009-09-11
2011	2011-04-09	2011-10-06
2012	2012-03-15	2012-09-14
2013	2013-04-10	2013-10-05
2015	2015-05-05	2015-10-07
2016	2016-05-11	2016-11-01
2017	2017-05-16	2017-10-15
2018	2018-05-01	2018-10-08
2019	2019-04-30	2019-10-05
2020	2020-03-26	2020-10-22
2021	2021-05-22	2021-10-10
2022	2022-05-10	2022-09-24
2023	2023-04-04	2023-09-30
2024	2024-04-15	2024-10-25
2025	2025-04-02	2025-10-18
2026	2026-03-21	2026-10-12

Every Fixed Threshold

Fixed thresholds at Clarksville Wwtp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	127	136	1941	107
35 C (95 F): Days	120	65	1925	24
40 C (104 F): Days	28	14	1930	1
90 F (32.2 C): Days	127	104	1925	72
100 F (37.8 C): Days	66	36	1952	6
110 F (43.3 C): Days	3	2	1925	2
0 C (32 F): Ice days (max	126	28	1978	7
0 C (32 F): Frost days (min	125	112	1968	37
-10 C (14 F): Days with min	119	39	1977	5
-20 C (-4 F): Days with min	28	4	1940	1
20 C (68 F): Tropical nights (min	125	88	1900	73
25 C (77 F): Days with min	44	23	1894	1
10 mm (0.39 in): Days with 10 mm or more rain	115	65	1950	23
25 mm (0.98 in): Days with 25 mm or more rain	115	27	1923	7
50 mm (1.97 in): Days with 50 mm or more rain	112	9	2025	1
100 mm (3.94 in): Days with 100 mm or more rain	25	2	1913	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	3	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Clarksville Wwtp 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).

Clarksville Wwtp Threshold Days by Year (USC00401790)

Key Facts for Clarksville Wwtp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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