Norris Madison Pwr House Threshold Days by Year (USC00246157)

18 fixed thresholds counted per year at Norris Madison Pwr House (USC00246157): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Norris Madison Pwr House Thresholds

Norris Madison Pwr House: nights with a minimum temperature at or below 0 C (32 F) in 120 years, most in 1923 with 178.
Norris Madison Pwr House: nights with a minimum temperature at or below -10 C (14 F) in 120 years, most in 1909 with 59.
Norris Madison Pwr House: days with 10 mm (0.39 in) or more of precipitation in 120 years, most in 1909 with 22.
Norris Madison Pwr House: days with a maximum temperature at or above 30 C (86 F) in 116 years, most in 1940 with 64.
18 fixed thresholds have at least one qualifying day at Norris Madison Pwr House.

Days at or above 30 C (86 F)

116 years with a qualifying day

Days per year at Norris Madison Pwr House with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 64 in 1940.

Days at or above 30 C (86 F) per year at Norris Madison Pwr House
Year	Days	Decade average
1907	5	22.7
1908	30	22.7
1909	33	22.7
1910	38	24.4
1911	15	24.4
1912	14	24.4
1913	18	24.4
1914	25	24.4
1915	12	24.4
1916	26	24.4
1917	27	24.4
1918	22	24.4
1919	47	24.4
1920	15	28.2
1921	19	28.2
1922	33	28.2
1923	28	28.2
1924	21	28.2
1925	30	28.2
1926	42	28.2
1927	19	28.2
1928	31	28.2
1929	44	28.2
1930	28	47.6
1931	48	47.6
1932	47	47.6
1933	55	47.6
1934	51	47.6
1935	45	47.6
1936	57	47.6
1937	53	47.6
1938	41	47.6
1939	51	47.6
1940	64	40.3
1941	28	40.3
1942	39	40.3
1943	41	40.3
1944	29	40.3
1945	43	40.3
1946	42	40.3
1947	47	40.3
1948	32	40.3
1949	38	40.3
1950	21	38.6
1951	29	38.6
1952	32	38.6
1953	52	38.6
1954	41	38.6
1955	46	38.6
1956	40	38.6
1957	40	38.6
1958	40	38.6
1959	45	38.6
1960	45	43.2
1961	59	43.2
1962	30	43.2
1963	48	43.2
1964	43	43.2
1965	27	43.2
1966	59	43.2
1967	45	43.2
1968	32	43.2
1969	44	43.2
1970	42	31.9
1971	25	31.9
1972	28	31.9
1973	31	31.9
1974	47	31.9
1975	23	31.9
1976	29	31.9
1977	34	31.9
1978	23	31.9
1979	37	31.9
1980	18	35.1
1981	49	35.1
1982	28	35.1
1983	27	35.1
1984	30	35.1
1985	43	35.1
1986	30	35.1
1987	28	35.1
1988	64	35.1
1989	34	35.1
1990	50	36
1991	54	36
1992	34	36
1993	6	36
1994	60	36
1995	32	36
1996	43	36
1997	19	36
1998	37	36
1999	25	36
2000	43	39.7
2001	51	39.7
2004	18	39.7
2005	35	39.7
2006	40	39.7
2007	56	39.7
2008	35	39.7
2011	36	41.2
2012	58	41.2
2013	42	41.2
2014	27	41.2
2015	41	41.2
2016	39	41.2
2017	63	41.2
2018	32	41.2
2019	33	41.2
2020	45	46.7
2021	63	46.7
2022	56	46.7
2023	32	46.7
2024	45	46.7
2025	42	46.7
2026	44	46.7

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

First to last qualifying date each year at Norris Madison Pwr House
Year	First date	Last date
1907	1907-07-22	1907-08-23
1908	1908-06-25	1908-09-06
1909	1909-06-17	1909-08-30
1910	1910-04-25	1910-08-26
1911	1911-06-12	1911-09-02
1912	1912-06-24	1912-08-27
1913	1913-05-28	1913-09-05
1914	1914-06-18	1914-08-16
1915	1915-07-21	1915-09-01
1916	1916-06-16	1916-09-01
1917	1917-06-27	1917-09-04
1918	1918-06-09	1918-08-31
1919	1919-05-27	1919-08-27
1920	1920-07-02	1920-08-25
1921	1921-06-29	1921-09-01
1922	1922-05-24	1922-09-20
1923	1923-06-12	1923-09-08
1924	1924-07-01	1924-09-05
1925	1925-06-19	1925-08-07
1926	1926-05-23	1926-08-29
1927	1927-06-25	1927-08-11
1928	1928-04-27	1928-10-07
1929	1929-06-28	1929-09-01
1930	1930-06-07	1930-09-03
1931	1931-06-07	1931-09-07
1932	1932-05-13	1932-09-11
1933	1933-06-14	1933-09-05
1934	1934-05-25	1934-09-18
1935	1935-06-22	1935-09-14
1936	1936-05-14	1936-09-21
1937	1937-06-04	1937-09-20
1938	1938-06-05	1938-09-28
1939	1939-06-28	1939-09-21
1940	1940-06-12	1940-09-11
1941	1941-05-11	1941-08-16
1942	1942-07-02	1942-09-08
1943	1943-07-06	1943-09-13
1944	1944-06-24	1944-09-08
1945	1945-06-21	1945-09-13
1946	1946-06-03	1946-09-14
1947	1947-07-01	1947-09-05
1948	1948-06-29	1948-09-15
1949	1949-06-09	1949-09-01
1950	1950-06-29	1950-09-06
1951	1951-07-03	1951-08-21
1952	1952-06-05	1952-09-26
1953	1953-06-11	1953-09-13
1954	1954-05-19	1954-09-26
1955	1955-06-21	1955-09-07
1956	1956-06-08	1956-09-19
1957	1957-06-03	1957-09-07
1958	1958-05-20	1958-09-11
1959	1959-06-12	1959-09-13
1960	1960-05-11	1960-08-30
1961	1961-06-16	1961-08-28
1962	1962-06-23	1962-09-06
1963	1963-07-02	1963-09-29
1964	1964-06-24	1964-08-19
1965	1965-06-11	1965-08-17
1966	1966-05-05	1966-09-23
1967	1967-05-23	1967-09-29
1968	1968-06-19	1968-09-11
1969	1969-06-04	1969-09-03
1970	1970-06-21	1970-08-27
1971	1971-06-23	1971-08-29
1972	1972-06-29	1972-08-29
1973	1973-06-22	1973-08-20
1974	1974-06-12	1974-09-08
1975	1975-07-02	1975-08-07
1976	1976-06-30	1976-09-06
1977	1977-06-01	1977-09-08
1978	1978-06-28	1978-08-25
1979	1979-06-12	1979-09-17
1980	1980-07-16	1980-09-07
1981	1981-06-26	1981-09-19
1982	1982-07-19	1982-09-10
1983	1983-07-05	1983-09-02
1984	1984-05-29	1984-09-19
1985	1985-06-08	1985-08-30
1986	1986-06-02	1986-08-29
1987	1987-05-15	1987-09-23
1988	1988-06-04	1988-09-09
1989	1989-06-16	1989-09-29
1990	1990-06-23	1990-09-15
1991	1991-07-03	1991-09-06
1992	1992-05-06	1992-10-02
1993	1993-06-20	1993-08-10
1994	1994-06-21	1994-09-28
1995	1995-06-26	1995-09-03
1996	1996-06-07	1996-10-10
1997	1997-07-09	1997-08-29
1998	1998-07-08	1998-09-17
1999	1999-06-21	1999-08-29
2000	2000-06-06	2000-09-16
2001	2001-06-02	2001-09-25
2004	2004-07-09	2004-09-01
2005	2005-06-21	2005-09-09
2006	2006-06-14	2006-09-14
2007	2007-05-17	2007-09-04
2008	2008-06-18	2008-09-16
2011	2011-06-28	2011-09-26
2012	2012-06-05	2012-09-15
2013	2013-06-10	2013-09-07
2014	2014-07-02	2014-09-26
2015	2015-06-09	2015-09-27
2016	2016-06-07	2016-09-01
2017	2017-06-04	2017-09-13
2018	2018-06-09	2018-09-08
2019	2019-07-12	2019-09-15
2020	2020-05-30	2020-09-14
2021	2021-06-03	2021-09-11
2022	2022-06-17	2022-09-11
2023	2023-07-02	2023-08-30
2024	2024-06-07	2024-09-25
2025	2025-05-31	2025-09-04
2026	2026-06-16	2026-08-28

Every Fixed Threshold

Fixed thresholds at Norris Madison Pwr House
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	116	64	1940	44
35 C (95 F): Days	87	16	2007	7
90 F (32.2 C): Days	114	41	1961	25
100 F (37.8 C): Days	12	4	1931	1
0 C (32 F): Ice days (max	116	66	1955	4
0 C (32 F): Frost days (min	120	178	1923	44
-10 C (14 F): Days with min	120	59	1909	2
-20 C (-4 F): Days with min	109	19	1916	2
-30 C (-22 F): Days with min	26	5	1936	1
20 C (68 F): Tropical nights (min	35	5	1936	3
25 C (77 F): Days with min	1	1	1935	1
10 mm (0.39 in): Days with 10 mm or more rain	120	22	1909	12
25 mm (0.98 in): Days with 25 mm or more rain	102	5	1943	5
50 mm (1.97 in): Days with 50 mm or more rain	13	2	1908	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1909	1
10 cm (3.9 in): Days with 10 cm or more snowfall	88	12	2022	2
25 cm (9.8 in): Days with 25 cm or more snowfall	32	3	2023	3
50 cm (19.7 in): Days with 50 cm or more snowfall	1	0	n/a	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 Norris Madison Pwr House 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).

Norris Madison Pwr House Threshold Days by Year (USC00246157)

Key Facts for Norris Madison Pwr House Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related