Madison Wwtp Threshold Days by Year (USC00214994)

18 fixed thresholds counted per year at Madison Wwtp (USC00214994): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Madison Wwtp Thresholds

Madison Wwtp: nights with a minimum temperature at or below 0 C (32 F) in 77 years, most in 2013 with 197.
Madison Wwtp: nights with a minimum temperature at or below -10 C (14 F) in 77 years, most in 1955 with 111.
Madison Wwtp: nights with a minimum temperature at or below -20 C (-4 F) in 77 years, most in 2014 with 48.
Madison Wwtp: nights with a minimum temperature at or above 20 C (68 F) in 77 years, most in 1995 with 25.
18 fixed thresholds have at least one qualifying day at Madison Wwtp.

Days at or above 30 C (86 F)

76 years with a qualifying day

Days per year at Madison Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1976.

Days at or above 30 C (86 F) per year at Madison Wwtp
Year	Days	Decade average
1941	52	39.4
1942	23	39.4
1944	38	39.4
1945	29	39.4
1946	30	39.4
1947	50	39.4
1948	41	39.4
1949	52	39.4
1950	33	44.1
1951	18	44.1
1952	60	44.1
1953	43	44.1
1954	35	44.1
1955	55	44.1
1956	35	44.1
1957	40	44.1
1958	49	44.1
1959	73	44.1
1960	46	43.7
1961	62	43.7
1962	38	43.7
1963	45	43.7
1964	59	43.7
1965	26	43.7
1966	53	43.7
1967	32	43.7
1968	41	43.7
1969	35	43.7
1970	62	52.7
1971	40	52.7
1972	43	52.7
1973	49	52.7
1974	50	52.7
1975	56	52.7
1976	81	52.7
1977	45	52.7
1978	48	52.7
1980	55	50.2
1981	36	50.2
1982	41	50.2
1983	65	50.2
1984	48	50.2
1989	56	50.2
1990	56	36.6
1991	42	36.6
1992	21	36.6
1993	13	36.6
1994	28	36.6
1995	40	36.6
1997	39	36.6
1998	52	36.6
1999	38	36.6
2000	33	33.3
2001	43	33.3
2003	35	33.3
2004	20	33.3
2006	35	33.3
2007	49	33.3
2008	29	33.3
2009	22	33.3
2010	37	37.5
2011	48	37.5
2012	65	37.5
2013	47	37.5
2014	16	37.5
2015	30	37.5
2016	40	37.5
2017	32	37.5
2018	31	37.5
2019	29	37.5
2020	40	39.5
2021	50	39.5
2022	28	39.5
2023	49	39.5
2024	25	39.5
2026	45	39.5

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

First to last qualifying date each year at Madison Wwtp
Year	First date	Last date
1941	1941-05-13	1941-09-20
1942	1942-06-11	1942-09-10
1944	1944-05-15	1944-09-17
1945	1945-06-22	1945-10-17
1946	1946-06-06	1946-09-04
1947	1947-06-26	1947-10-21
1948	1948-05-19	1948-09-17
1949	1949-05-03	1949-08-29
1950	1950-05-22	1950-09-07
1951	1951-06-16	1951-10-02
1952	1952-04-27	1952-09-30
1953	1953-05-25	1953-10-15
1954	1954-06-12	1954-09-01
1955	1955-05-01	1955-10-26
1956	1956-06-05	1956-10-12
1957	1957-05-07	1957-09-01
1958	1958-05-10	1958-10-15
1959	1959-05-01	1959-09-14
1960	1960-05-31	1960-09-06
1961	1961-05-11	1961-10-17
1962	1962-04-24	1962-09-01
1963	1963-05-07	1963-10-06
1964	1964-04-16	1964-09-10
1965	1965-04-29	1965-08-15
1966	1966-05-21	1966-09-12
1967	1967-05-25	1967-10-01
1968	1968-04-11	1968-09-15
1969	1969-05-15	1969-09-13
1970	1970-04-28	1970-10-06
1971	1971-06-12	1971-09-08
1972	1972-05-16	1972-09-20
1973	1973-06-01	1973-09-03
1974	1974-05-20	1974-09-27
1975	1975-05-17	1975-10-04
1976	1976-04-13	1976-10-03
1977	1977-04-10	1977-09-09
1978	1978-05-25	1978-09-12
1980	1980-05-03	1980-10-10
1981	1981-05-02	1981-09-13
1982	1982-05-03	1982-09-11
1983	1983-06-10	1983-09-28
1984	1984-05-31	1984-09-22
1989	1989-06-06	1989-10-01
1990	1990-04-21	1990-10-06
1991	1991-04-05	1991-10-16
1992	1992-04-30	1992-10-03
1993	1993-06-11	1993-10-07
1994	1994-05-17	1994-09-15
1995	1995-06-13	1995-09-03
1997	1997-06-01	1997-10-07
1998	1998-05-14	1998-09-19
1999	1999-05-29	1999-08-31
2000	2000-05-04	2000-10-19
2001	2001-04-28	2001-10-02
2003	2003-04-13	2003-10-19
2004	2004-04-18	2004-09-19
2006	2006-05-23	2006-10-07
2007	2007-05-13	2007-10-06
2008	2008-06-24	2008-09-26
2009	2009-04-23	2009-09-18
2010	2010-05-24	2010-10-09
2011	2011-05-11	2011-10-06
2012	2012-05-02	2012-10-01
2013	2013-05-14	2013-10-01
2014	2014-05-25	2014-09-26
2015	2015-05-03	2015-10-12
2016	2016-05-06	2016-08-30
2017	2017-05-14	2017-09-23
2018	2018-05-17	2018-09-17
2019	2019-05-31	2019-09-21
2020	2020-05-28	2020-09-25
2021	2021-05-02	2021-09-29
2022	2022-06-12	2022-09-20
2023	2023-05-24	2023-10-03
2024	2024-04-14	2024-09-30
2026	2026-04-17	2026-10-10

Every Fixed Threshold

Fixed thresholds at Madison Wwtp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	76	81	1976	45
35 C (95 F): Days	70	31	1976	3
40 C (104 F): Days	3	3	1941	1
90 F (32.2 C): Days	76	67	1976	20
100 F (37.8 C): Days	28	14	1976	2
0 C (32 F): Ice days (max	76	108	2019	42
0 C (32 F): Frost days (min	77	197	2013	110
-10 C (14 F): Days with min	77	111	1955	40
-20 C (-4 F): Days with min	77	48	2014	15
-30 C (-22 F): Days with min	48	9	1977	2
20 C (68 F): Tropical nights (min	77	25	1995	10
25 C (77 F): Days with min	20	4	1947	1
10 mm (0.39 in): Days with 10 mm or more rain	77	35	1965	9
25 mm (0.98 in): Days with 25 mm or more rain	77	12	1991	1
50 mm (1.97 in): Days with 50 mm or more rain	46	4	1977	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1992	1
10 cm (3.9 in): Days with 10 cm or more snowfall	66	10	2018	1
25 cm (9.8 in): Days with 25 cm or more snowfall	13	3	2001	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for Madison 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).

Madison Wwtp Threshold Days by Year (USC00214994)

Key Facts for Madison Wwtp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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