Wisconsin Dells Wwtp Threshold Days by Year (USC00479319)

21 fixed thresholds counted per year at Wisconsin Dells Wwtp (USC00479319): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wisconsin Dells Wwtp Thresholds

Wisconsin Dells Wwtp: days with a maximum temperature at or above 30 C (86 F) in 95 years, most in 1937 with 64.
Wisconsin Dells Wwtp: days with a maximum temperature at or below 0 C (32 F) in 95 years, most in 1978 with 93.
Wisconsin Dells Wwtp: nights with a minimum temperature at or below 0 C (32 F) in 95 years, most in 1923 with 188.
Wisconsin Dells Wwtp: nights with a minimum temperature at or below -10 C (14 F) in 95 years, most in 2014 with 91.
21 fixed thresholds have at least one qualifying day at Wisconsin Dells Wwtp.

Days at or above 30 C (86 F)

95 years with a qualifying day

Days per year at Wisconsin Dells Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 64 in 1937.

Days at or above 30 C (86 F) per year at Wisconsin Dells Wwtp
Year	Days	Decade average
1923	44	32.7
1924	8	32.7
1925	33	32.7
1926	38	32.7
1927	41	32.7
1928	28	32.7
1929	37	32.7
1935	39	53.7
1936	58	53.7
1937	64	53.7
1940	24	38.9
1941	35	38.9
1942	27	38.9
1943	46	38.9
1944	57	38.9
1945	32	38.9
1946	35	38.9
1947	46	38.9
1948	46	38.9
1949	41	38.9
1950	12	30.7
1951	14	30.7
1952	35	30.7
1953	35	30.7
1954	29	30.7
1955	58	30.7
1956	28	30.7
1957	28	30.7
1958	25	30.7
1959	43	30.7
1960	23	19.7
1961	23	19.7
1962	18	19.7
1963	29	19.7
1964	31	19.7
1965	11	19.7
1966	17	19.7
1967	12	19.7
1968	20	19.7
1969	13	19.7
1970	36	17
1971	18	17
1972	15	17
1973	18	17
1974	10	17
1975	26	17
1976	18	17
1977	7	17
1978	13	17
1979	9	17
1980	27	21.5
1981	9	21.5
1982	7	21.5
1985	27	21.5
1986	17	21.5
1987	20	21.5
1988	39	21.5
1989	26	21.5
1990	16	21.9
1991	37	21.9
1992	12	21.9
1993	13	21.9
1994	17	21.9
1995	35	21.9
1996	14	21.9
1997	18	21.9
1998	24	21.9
1999	33	21.9
2000	12	28.5
2001	36	28.5
2002	39	28.5
2003	39	28.5
2004	8	28.5
2005	46	28.5
2006	33	28.5
2007	45	28.5
2008	17	28.5
2009	10	28.5
2010	27	29.2
2011	37	29.2
2012	55	29.2
2013	32	29.2
2014	11	29.2
2015	21	29.2
2016	31	29.2
2017	21	29.2
2018	33	29.2
2019	24	29.2
2020	34	23.6
2021	28	23.6
2022	25	23.6
2023	34	23.6
2024	21	23.6
2025	19	23.6
2026	4	23.6

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

First to last qualifying date each year at Wisconsin Dells Wwtp
Year	First date	Last date
1923	1923-05-30	1923-09-06
1924	1924-07-23	1924-09-21
1925	1925-04-22	1925-09-20
1926	1926-05-01	1926-09-17
1927	1927-05-21	1927-10-26
1928	1928-05-09	1928-10-11
1929	1929-05-28	1929-09-03
1935	1935-06-13	1935-09-24
1936	1936-05-06	1936-09-22
1937	1937-05-30	1937-09-23
1940	1940-05-13	1940-09-20
1941	1941-05-15	1941-09-22
1942	1942-04-30	1942-09-17
1943	1943-06-03	1943-09-05
1944	1944-05-16	1944-09-18
1945	1945-06-23	1945-09-09
1946	1946-05-27	1946-09-09
1947	1947-06-09	1947-10-21
1948	1948-05-20	1948-09-19
1949	1949-05-03	1949-10-08
1950	1950-05-24	1950-10-18
1951	1951-05-19	1951-08-30
1952	1952-04-28	1952-09-13
1953	1953-05-29	1953-10-03
1954	1954-06-09	1954-09-06
1955	1955-05-02	1955-09-18
1956	1956-05-22	1956-09-03
1957	1957-06-16	1957-09-01
1958	1958-06-28	1958-09-03
1959	1959-05-02	1959-09-09
1960	1960-04-23	1960-09-08
1961	1961-06-10	1961-09-10
1962	1962-05-16	1962-08-29
1963	1963-06-02	1963-10-06
1964	1964-06-08	1964-09-07
1965	1965-05-02	1965-08-15
1966	1966-06-24	1966-08-31
1967	1967-05-26	1967-07-29
1968	1968-06-05	1968-08-23
1969	1969-05-28	1969-08-30
1970	1970-04-29	1970-09-07
1971	1971-06-04	1971-09-07
1972	1972-05-18	1972-08-18
1973	1973-06-08	1973-09-01
1974	1974-07-02	1974-07-26
1975	1975-05-19	1975-10-13
1976	1976-06-08	1976-09-07
1977	1977-07-04	1977-08-27
1978	1978-05-26	1978-09-11
1979	1979-05-10	1979-09-01
1980	1980-04-22	1980-09-08
1981	1981-06-14	1981-07-13
1982	1982-05-15	1982-08-03
1985	1985-04-19	1985-09-19
1986	1986-06-04	1986-08-16
1987	1987-04-20	1987-08-15
1988	1988-05-21	1988-09-17
1989	1989-05-24	1989-08-27
1990	1990-04-25	1990-09-06
1991	1991-04-06	1991-09-09
1992	1992-05-01	1992-08-25
1993	1993-06-23	1993-08-27
1994	1994-04-19	1994-09-16
1995	1995-06-16	1995-09-06
1996	1996-05-18	1996-09-06
1997	1997-06-21	1997-10-08
1998	1998-05-15	1998-09-14
1999	1999-05-30	1999-09-05
2000	2000-06-09	2000-09-02
2001	2001-05-15	2001-09-06
2002	2002-04-15	2002-09-09
2003	2003-04-14	2003-09-11
2004	2004-06-07	2004-09-12
2005	2005-06-07	2005-10-04
2006	2006-05-24	2006-08-16
2007	2007-04-29	2007-10-06
2008	2008-07-07	2008-09-02
2009	2009-05-21	2009-08-16
2010	2010-05-24	2010-08-31
2011	2011-05-13	2011-09-02
2012	2012-05-19	2012-09-12
2013	2013-05-01	2013-09-10
2014	2014-05-31	2014-09-01
2015	2015-06-10	2015-09-15
2016	2016-05-07	2016-09-07
2017	2017-06-04	2017-09-26
2018	2018-05-25	2018-09-18
2019	2019-06-08	2019-10-01
2020	2020-05-26	2020-08-28
2021	2021-05-02	2021-09-20
2022	2022-05-11	2022-09-10
2023	2023-05-31	2023-10-02
2024	2024-05-19	2024-09-18
2025	2025-05-15	2025-10-04
2026	2026-05-27	2026-06-11

Every Fixed Threshold

Fixed thresholds at Wisconsin Dells Wwtp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	95	64	1937	4
35 C (95 F): Days	51	23	1936	1
40 C (104 F): Days	3	5	1936	1
45 C (113 F): Days	1	2	1936	2
90 F (32.2 C): Days	94	43	1936	2
100 F (37.8 C): Days	12	11	1936	1
110 F (43.3 C): Days	1	2	1936	2
0 C (32 F): Ice days (max	95	93	1978	38
0 C (32 F): Frost days (min	95	188	1923	97
-10 C (14 F): Days with min	95	91	2014	37
-20 C (-4 F): Days with min	94	45	1963	15
-30 C (-22 F): Days with min	47	13	1936	2
-40 C (-40 F): Days with min	1	1	1951	1
20 C (68 F): Tropical nights (min	90	23	1955	6
25 C (77 F): Days with min	10	2	2025	2
10 mm (0.39 in): Days with 10 mm or more rain	92	47	2018	28
25 mm (0.98 in): Days with 25 mm or more rain	92	19	2018	7
50 mm (1.97 in): Days with 50 mm or more rain	62	5	2004	2
100 mm (3.94 in): Days with 100 mm or more rain	8	2	1980	2
10 cm (3.9 in): Days with 10 cm or more snowfall	69	9	1951	2
25 cm (9.8 in): Days with 25 cm or more snowfall	9	1	1926	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1923.

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Data for Wisconsin Dells 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).

Wisconsin Dells Wwtp Threshold Days by Year (USC00479319)

Key Facts for Wisconsin Dells Wwtp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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