Racine Wwtp Threshold Days by Year (USC00476922)

19 fixed thresholds counted per year at Racine Wwtp (USC00476922): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Racine Wwtp Thresholds

Racine Wwtp: nights with a minimum temperature at or below 0 C (32 F) in 124 years, most in 1969 with 160.
Racine Wwtp: nights with a minimum temperature at or below -10 C (14 F) in 124 years, most in 2014 with 63.
Racine Wwtp: nights with a minimum temperature at or above 20 C (68 F) in 123 years, most in 2012 with 50.
Racine Wwtp: days with 10 mm (0.39 in) or more of precipitation in 123 years, most in 1941 with 41.
19 fixed thresholds have at least one qualifying day at Racine Wwtp.

Days at or above 30 C (86 F)

122 years with a qualifying day

Days per year at Racine Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 53 in 1931.

Days at or above 30 C (86 F) per year at Racine Wwtp
Year	Days	Decade average
1897	25	23.3
1898	21	23.3
1899	24	23.3
1900	31	21.5
1901	37	21.5
1902	20	21.5
1903	13	21.5
1904	12	21.5
1905	19	21.5
1906	20	21.5
1907	15	21.5
1908	28	21.5
1909	20	21.5
1910	36	28.2
1911	38	28.2
1912	23	28.2
1913	39	28.2
1914	25	28.2
1915	15	28.2
1916	33	28.2
1917	12	28.2
1918	27	28.2
1919	34	28.2
1920	25	30.1
1921	51	30.1
1922	35	30.1
1923	28	30.1
1924	16	30.1
1925	42	30.1
1926	20	30.1
1927	21	30.1
1928	28	30.1
1929	35	30.1
1930	48	38.7
1931	53	38.7
1932	34	38.7
1933	40	38.7
1934	36	38.7
1935	30	38.7
1936	50	38.7
1937	43	38.7
1938	17	38.7
1939	36	38.7
1940	22	30.7
1941	40	30.7
1943	36	30.7
1944	35	30.7
1945	24	30.7
1946	26	30.7
1947	34	30.7
1948	30	30.7
1949	29	30.7
1950	13	29.5
1951	10	29.5
1952	30	29.5
1953	43	29.5
1954	28	29.5
1955	49	29.5
1956	26	29.5
1957	28	29.5
1958	30	29.5
1959	38	29.5
1960	24	25.9
1961	31	25.9
1962	26	25.9
1963	21	25.9
1964	34	25.9
1965	22	25.9
1966	33	25.9
1967	13	25.9
1968	29	25.9
1969	26	25.9
1970	40	26.2
1971	37	26.2
1972	20	26.2
1976	22	26.2
1977	22	26.2
1978	16	26.2
1980	13	14.4
1981	9	14.4
1982	3	14.4
1983	24	14.4
1984	13	14.4
1985	18	14.4
1986	9	14.4
1987	14	14.4
1988	34	14.4
1989	7	14.4
1990	12	12.5
1991	20	12.5
1992	3	12.5
1993	10	12.5
1994	8	12.5
1995	16	12.5
1996	12	12.5
1997	11	12.5
1998	15	12.5
1999	18	12.5
2000	10	13.5
2001	19	13.5
2002	23	13.5
2003	13	13.5
2006	13	13.5
2007	17	13.5
2008	8	13.5
2009	5	13.5
2010	15	14.3
2011	17	14.3
2012	30	14.3
2014	4	14.3
2015	10	14.3
2016	17	14.3
2017	12	14.3
2018	13	14.3
2019	11	14.3
2020	13	14.4
2021	20	14.4
2022	15	14.4
2023	10	14.4
2024	11	14.4
2025	17	14.4
2026	15	14.4

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

First to last qualifying date each year at Racine Wwtp
Year	First date	Last date
1897	1897-06-13	1897-10-15
1898	1898-06-18	1898-09-18
1899	1899-06-04	1899-09-16
1900	1900-05-11	1900-10-05
1901	1901-04-30	1901-10-01
1902	1902-05-02	1902-09-08
1903	1903-05-19	1903-08-24
1904	1904-06-24	1904-09-10
1905	1905-06-05	1905-10-04
1906	1906-05-17	1906-09-11
1907	1907-06-17	1907-09-19
1908	1908-06-19	1908-09-18
1909	1909-05-05	1909-08-25
1910	1910-06-14	1910-09-08
1911	1911-05-17	1911-09-16
1912	1912-05-23	1912-09-10
1913	1913-06-06	1913-09-08
1914	1914-05-25	1914-09-21
1915	1915-04-19	1915-09-14
1916	1916-05-27	1916-10-07
1917	1917-05-17	1917-08-26
1918	1918-05-26	1918-09-02
1919	1919-06-14	1919-09-09
1920	1920-06-09	1920-09-24
1921	1921-05-21	1921-09-02
1922	1922-06-06	1922-10-05
1923	1923-06-04	1923-08-15
1924	1924-06-19	1924-09-21
1925	1925-05-22	1925-09-20
1926	1926-05-17	1926-08-29
1927	1927-06-08	1927-09-17
1928	1928-05-03	1928-10-12
1929	1929-04-06	1929-09-04
1930	1930-04-10	1930-09-20
1931	1931-05-28	1931-09-22
1932	1932-05-15	1932-09-20
1933	1933-06-02	1933-09-26
1934	1934-05-06	1934-08-19
1935	1935-06-14	1935-09-25
1936	1936-05-07	1936-09-23
1937	1937-05-31	1937-09-22
1938	1938-06-22	1938-09-04
1939	1939-05-30	1939-09-16
1940	1940-06-02	1940-09-21
1941	1941-05-27	1941-09-23
1943	1943-06-12	1943-09-05
1944	1944-05-26	1944-09-27
1945	1945-06-22	1945-09-23
1946	1946-06-07	1946-09-27
1947	1947-06-10	1947-10-21
1948	1948-06-02	1948-09-18
1949	1949-05-04	1949-10-09
1950	1950-05-24	1950-08-17
1951	1951-05-16	1951-09-11
1952	1952-05-04	1952-09-28
1953	1953-05-29	1953-10-20
1954	1954-05-31	1954-09-27
1955	1955-06-20	1955-09-19
1956	1956-05-11	1956-09-03
1957	1957-05-01	1957-09-19
1958	1958-05-14	1958-09-24
1959	1959-05-02	1959-09-21
1960	1960-04-22	1960-09-09
1961	1961-06-05	1961-09-11
1962	1962-04-26	1962-09-13
1963	1963-06-05	1963-10-06
1964	1964-05-18	1964-09-10
1965	1965-05-07	1965-09-19
1966	1966-06-05	1966-09-02
1967	1967-05-18	1967-10-04
1968	1968-06-05	1968-09-03
1969	1969-05-16	1969-08-31
1970	1970-05-21	1970-09-21
1971	1971-06-05	1971-10-02
1972	1972-05-20	1972-08-31
1976	1976-06-08	1976-09-08
1977	1977-05-14	1977-09-01
1978	1978-06-12	1978-09-20
1980	1980-04-23	1980-08-09
1981	1981-06-06	1981-09-12
1982	1982-07-18	1982-08-04
1983	1983-06-24	1983-09-11
1984	1984-06-04	1984-09-08
1985	1985-04-19	1985-09-08
1986	1986-07-05	1986-08-01
1987	1987-05-12	1987-08-16
1988	1988-06-01	1988-09-18
1989	1989-07-10	1989-08-23
1990	1990-06-18	1990-09-07
1991	1991-06-11	1991-09-16
1992	1992-05-02	1992-08-11
1993	1993-07-05	1993-08-31
1994	1994-06-13	1994-09-14
1995	1995-06-19	1995-08-31
1996	1996-05-19	1996-08-23
1997	1997-06-25	1997-10-06
1998	1998-05-19	1998-09-27
1999	1999-06-08	1999-09-27
2000	2000-06-09	2000-09-08
2001	2001-06-19	2001-09-04
2002	2002-05-31	2002-09-11
2003	2003-04-16	2003-08-29
2006	2006-07-02	2006-08-03
2007	2007-05-15	2007-10-01
2008	2008-06-07	2008-08-18
2009	2009-06-21	2009-08-10
2010	2010-06-19	2010-09-24
2011	2011-06-07	2011-09-14
2012	2012-05-16	2012-08-31
2014	2014-06-18	2014-07-24
2015	2015-07-14	2015-09-04
2016	2016-06-11	2016-09-20
2017	2017-05-17	2017-09-27
2018	2018-05-03	2018-09-06
2019	2019-07-03	2019-09-12
2020	2020-06-03	2020-08-29
2021	2021-06-05	2021-09-18
2022	2022-06-16	2022-09-01
2023	2023-06-11	2023-09-04
2024	2024-06-14	2024-09-21
2025	2025-06-12	2025-09-28
2026	2026-07-01	2026-10-13

Every Fixed Threshold

Fixed thresholds at Racine Wwtp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	122	53	1931	15
35 C (95 F): Days	87	22	1931	1
40 C (104 F): Days	7	4	1934	1
90 F (32.2 C): Days	121	39	1931	7
100 F (37.8 C): Days	29	6	1934	3
0 C (32 F): Ice days (max	122	79	2014	35
0 C (32 F): Frost days (min	124	160	1969	73
-10 C (14 F): Days with min	124	63	2014	26
-20 C (-4 F): Days with min	116	26	1912	3
-30 C (-22 F): Days with min	11	3	2019	3
20 C (68 F): Tropical nights (min	123	50	2012	29
25 C (77 F): Days with min	25	4	1931	1
10 mm (0.39 in): Days with 10 mm or more rain	123	41	1941	29
25 mm (0.98 in): Days with 25 mm or more rain	123	13	1960	12
50 mm (1.97 in): Days with 50 mm or more rain	73	4	1950	3
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1933	1
10 cm (3.9 in): Days with 10 cm or more snowfall	74	10	1951	1
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	2008	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1931	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Racine 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).

Racine Wwtp Threshold Days by Year (USC00476922)

Key Facts for Racine Wwtp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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