Greeneville Exp STN Threshold Days by Year (USC00403679)

18 fixed thresholds counted per year at Greeneville Exp STN (USC00403679): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Greeneville Exp STN Thresholds

Greeneville Exp STN: days with a maximum temperature at or above 30 C (86 F) in 108 years, most in 1941 with 117.
Greeneville Exp STN: days with a maximum temperature at or above 90 F (32.2 C) in 108 years, most in 1941 with 79.
Greeneville Exp STN: days with 10 mm (0.39 in) or more of precipitation in 106 years, most in 2019 with 59.
Greeneville Exp STN: days with 25 mm (0.98 in) or more of precipitation in 106 years, most in 1901 with 18.
18 fixed thresholds have at least one qualifying day at Greeneville Exp STN.

Days at or above 30 C (86 F)

108 years with a qualifying day

Days per year at Greeneville Exp STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 117 in 1941.

Days at or above 30 C (86 F) per year at Greeneville Exp STN
Year	Days	Decade average
1893	10	50.6
1894	54	50.6
1895	62	50.6
1896	56	50.6
1897	54	50.6
1898	47	50.6
1899	71	50.6
1900	73	50.6
1901	47	50.6
1902	68	50.6
1903	42	50.6
1904	46	50.6
1905	38	50.6
1906	40	50.6
1933	107	89.3
1934	89	89.3
1935	70	89.3
1936	106	89.3
1937	82	89.3
1938	73	89.3
1939	98	89.3
1940	70	86.6
1941	117	86.6
1942	79	86.6
1943	96	86.6
1944	96	86.6
1945	87	86.6
1946	71	86.6
1947	87	86.6
1948	77	86.6
1949	86	86.6
1950	46	85.7
1951	83	85.7
1952	92	85.7
1953	98	85.7
1954	110	85.7
1955	89	85.7
1956	80	85.7
1957	89	85.7
1958	77	85.7
1959	93	85.7
1960	87	68.2
1961	67	68.2
1962	88	68.2
1963	53	68.2
1964	84	68.2
1965	75	68.2
1966	56	68.2
1967	24	68.2
1968	70	68.2
1969	78	68.2
1970	90	61.5
1971	57	61.5
1972	51	61.5
1973	65	61.5
1974	45	61.5
1975	80	61.5
1976	50	61.5
1977	66	61.5
1978	76	61.5
1979	35	61.5
1980	74	61.7
1981	45	61.7
1982	39	61.7
1983	67	61.7
1984	55	61.7
1985	59	61.7
1986	79	61.7
1987	81	61.7
1988	74	61.7
1989	44	61.7
1990	67	62.4
1991	69	62.4
1992	33	62.4
1993	76	62.4
1994	54	62.4
1995	66	62.4
1996	54	62.4
1997	56	62.4
1998	62	62.4
1999	87	62.4
2000	85	72.5
2001	59	72.5
2002	110	72.5
2003	59	72.5
2004	52	72.5
2005	90	72.5
2006	69	72.5
2007	86	72.5
2008	75	72.5
2009	40	72.5
2010	103	74.8
2011	78	74.8
2012	63	74.8
2013	37	74.8
2014	66	74.8
2015	71	74.8
2016	96	74.8
2017	63	74.8
2018	86	74.8
2019	85	74.8
2020	51	51.9
2021	54	51.9
2022	55	51.9
2023	35	51.9
2024	57	51.9
2025	54	51.9
2026	57	51.9

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

First to last qualifying date each year at Greeneville Exp STN
Year	First date	Last date
1893	1893-07-05	1893-08-25
1894	1894-05-03	1894-09-16
1895	1895-05-30	1895-09-26
1896	1896-04-16	1896-09-19
1897	1897-06-12	1897-10-16
1898	1898-05-04	1898-09-19
1899	1899-04-30	1899-09-09
1900	1900-05-14	1900-10-06
1901	1901-05-02	1901-08-11
1902	1902-04-25	1902-09-01
1903	1903-05-20	1903-09-23
1904	1904-05-24	1904-09-29
1905	1905-05-11	1905-09-28
1906	1906-05-18	1906-09-19
1933	1933-05-13	1933-10-20
1934	1934-05-05	1934-09-29
1935	1935-05-02	1935-10-13
1936	1936-05-01	1936-09-29
1937	1937-05-21	1937-09-22
1938	1938-05-03	1938-10-18
1939	1939-05-21	1939-10-10
1940	1940-05-07	1940-10-14
1941	1941-04-18	1941-10-20
1942	1942-04-27	1942-09-19
1943	1943-05-07	1943-09-15
1944	1944-05-14	1944-09-28
1945	1945-05-15	1945-10-01
1946	1946-04-21	1946-09-21
1947	1947-05-15	1947-10-22
1948	1948-04-24	1948-09-22
1949	1949-05-05	1949-10-09
1950	1950-04-29	1950-09-20
1951	1951-04-30	1951-10-06
1952	1952-05-01	1952-10-01
1953	1953-04-24	1953-10-04
1954	1954-05-02	1954-10-14
1955	1955-04-18	1955-09-29
1956	1956-04-29	1956-09-17
1957	1957-04-25	1957-09-22
1958	1958-05-17	1958-09-26
1959	1959-05-02	1959-10-06
1960	1960-04-23	1960-09-22
1961	1961-05-14	1961-09-25
1962	1962-04-30	1962-09-15
1963	1963-04-21	1963-09-22
1964	1964-04-20	1964-09-12
1965	1965-04-24	1965-09-22
1966	1966-06-08	1966-09-04
1967	1967-05-27	1967-09-20
1968	1968-05-24	1968-09-25
1969	1969-05-05	1969-09-18
1970	1970-04-30	1970-09-27
1971	1971-05-18	1971-09-16
1972	1972-06-05	1972-09-25
1973	1973-04-21	1973-09-29
1974	1974-04-28	1974-09-13
1975	1975-05-22	1975-09-11
1976	1976-04-18	1976-09-10
1977	1977-05-17	1977-09-07
1978	1978-05-27	1978-09-22
1979	1979-05-12	1979-09-01
1980	1980-05-30	1980-09-25
1981	1981-04-15	1981-09-04
1982	1982-05-13	1982-10-03
1983	1983-06-14	1983-10-14
1984	1984-05-22	1984-10-29
1985	1985-04-22	1985-10-13
1986	1986-04-27	1986-10-05
1987	1987-04-23	1987-09-18
1988	1988-05-31	1988-09-25
1989	1989-05-26	1989-09-11
1990	1990-04-28	1990-10-08
1991	1991-05-18	1991-10-29
1992	1992-06-08	1992-09-11
1993	1993-06-05	1993-10-21
1994	1994-04-27	1994-09-17
1995	1995-04-11	1995-09-14
1996	1996-04-30	1996-09-09
1997	1997-05-19	1997-09-21
1998	1998-03-31	1998-10-19
1999	1999-05-31	1999-09-27
2000	2000-05-04	2000-10-04
2001	2001-04-11	2001-10-25
2002	2002-04-17	2002-10-07
2003	2003-05-10	2003-09-22
2004	2004-05-09	2004-09-25
2005	2005-05-13	2005-10-06
2006	2006-04-17	2006-09-19
2007	2007-04-26	2007-10-09
2008	2008-06-04	2008-09-15
2009	2009-04-25	2009-09-25
2010	2010-04-03	2010-09-25
2011	2011-04-11	2011-09-27
2012	2012-05-03	2012-09-08
2013	2013-05-22	2013-10-06
2014	2014-05-08	2014-10-03
2015	2015-05-07	2015-09-10
2016	2016-06-01	2016-10-20
2017	2017-04-30	2017-10-13
2018	2018-05-13	2018-10-09
2019	2019-05-19	2019-10-05
2020	2020-06-04	2020-09-14
2021	2021-05-22	2021-09-15
2022	2022-05-21	2022-09-22
2023	2023-04-06	2023-09-08
2024	2024-05-03	2024-09-24
2025	2025-04-04	2025-08-23
2026	2026-05-18	2026-09-03

Every Fixed Threshold

Fixed thresholds at Greeneville Exp STN
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	108	117	1941	57
35 C (95 F): Days	65	23	1944	2
40 C (104 F): Days	1	2	2012	2
90 F (32.2 C): Days	108	79	1941	18
100 F (37.8 C): Days	10	7	1952	3
0 C (32 F): Ice days (max	103	25	1977	9
0 C (32 F): Frost days (min	104	146	2000	55
-10 C (14 F): Days with min	102	38	1977	12
-20 C (-4 F): Days with min	33	5	1893	2
-30 C (-22 F): Days with min	3	2	1985	1
20 C (68 F): Tropical nights (min	101	51	1893	36
25 C (77 F): Days with min	2	1	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	106	59	2019	27
25 mm (0.98 in): Days with 25 mm or more rain	106	18	1901	6
50 mm (1.97 in): Days with 50 mm or more rain	74	5	1936	1
100 mm (3.94 in): Days with 100 mm or more rain	5	2	2000	2
10 cm (3.9 in): Days with 10 cm or more snowfall	30	4	1987	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1954	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.

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Data for Greeneville Exp STN 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).

Greeneville Exp STN Threshold Days by Year (USC00403679)

Key Facts for Greeneville Exp STN Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

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