Viroqua Threshold Days by Year (USC00478827)

20 fixed thresholds counted per year at Viroqua (USC00478827): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Viroqua Thresholds

Viroqua: days with 10 mm (0.39 in) or more of precipitation in 126 years, most in 2018 with 44.
Viroqua: days with 25 mm (0.98 in) or more of precipitation in 126 years, most in 2007 with 16.
Viroqua: nights with a minimum temperature at or below 0 C (32 F) in 124 years, most in 2013 with 184.
Viroqua: nights with a minimum temperature at or below -10 C (14 F) in 124 years, most in 1978 with 97.
20 fixed thresholds have at least one qualifying day at Viroqua.

Days at or above 30 C (86 F)

118 years with a qualifying day

Days per year at Viroqua with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 60 in 1934.

Days at or above 30 C (86 F) per year at Viroqua
Year	Days	Decade average
1893	16	29
1894	49	29
1895	44	29
1896	26	29
1897	21	29
1898	27	29
1899	20	29
1900	22	17.2
1901	44	17.2
1902	4	17.2
1903	7	17.2
1904	5	17.2
1905	16	17.2
1906	22	17.2
1907	4	17.2
1908	26	17.2
1909	22	17.2
1910	56	25.1
1911	37	25.1
1912	22	25.1
1913	30	25.1
1914	13	25.1
1915	1	25.1
1916	34	25.1
1917	14	25.1
1918	16	25.1
1919	28	25.1
1922	13	18
1923	19	18
1924	5	18
1925	18	18
1929	35	18
1930	44	47.9
1931	58	47.9
1932	33	47.9
1933	58	47.9
1934	60	47.9
1935	44	47.9
1936	52	47.9
1937	53	47.9
1938	29	47.9
1940	40	36
1941	46	36
1942	18	36
1943	39	36
1944	33	36
1945	19	36
1946	21	36
1947	51	36
1948	57	36
1950	15	25.8
1951	12	25.8
1952	36	25.8
1953	26	25.8
1954	20	25.8
1955	48	25.8
1956	25	25.8
1957	21	25.8
1959	29	25.8
1960	13	20
1961	18	20
1962	17	20
1963	35	20
1964	38	20
1965	10	20
1966	25	20
1967	12	20
1968	19	20
1969	13	20
1970	27	24.7
1971	21	24.7
1972	22	24.7
1973	17	24.7
1974	15	24.7
1975	37	24.7
1976	38	24.7
1977	24	24.7
1978	21	24.7
1981	10	19.1
1982	13	19.1
1983	37	19.1
1984	16	19.1
1985	22	19.1
1986	14	19.1
1987	22	19.1
1991	15	11.4
1992	4	11.4
1993	4	11.4
1995	27	11.4
1996	5	11.4
1997	8	11.4
1998	10	11.4
1999	18	11.4
2000	4	13.5
2001	20	13.5
2002	22	13.5
2003	22	13.5
2006	18	13.5
2007	14	13.5
2008	4	13.5
2009	4	13.5
2010	9	12.1
2011	15	12.1
2012	36	12.1
2013	14	12.1
2014	2	12.1
2015	10	12.1
2016	8	12.1
2017	10	12.1
2018	13	12.1
2019	4	12.1
2020	13	14
2021	18	14
2022	9	14
2023	29	14
2024	5	14
2025	11	14
2026	13	14

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

First to last qualifying date each year at Viroqua
Year	First date	Last date
1893	1893-06-12	1893-09-04
1894	1894-05-16	1894-09-02
1895	1895-04-30	1895-09-20
1896	1896-05-09	1896-08-13
1897	1897-06-13	1897-10-15
1898	1898-06-03	1898-09-03
1899	1899-06-04	1899-09-05
1900	1900-05-13	1900-09-10
1901	1901-05-01	1901-09-06
1902	1902-05-25	1902-09-02
1903	1903-07-03	1903-08-20
1904	1904-07-16	1904-09-28
1905	1905-06-05	1905-08-29
1906	1906-05-15	1906-09-11
1907	1907-06-17	1907-08-31
1908	1908-05-17	1908-09-22
1909	1909-06-27	1909-08-26
1910	1910-04-29	1910-10-16
1911	1911-05-18	1911-09-16
1912	1912-06-25	1912-09-09
1913	1913-06-15	1913-09-07
1914	1914-05-26	1914-08-18
1915	1915-07-15	1915-07-15
1916	1916-07-01	1916-09-06
1917	1917-05-18	1917-08-22
1918	1918-06-16	1918-08-25
1919	1919-05-28	1919-09-08
1922	1922-06-23	1922-09-07
1923	1923-06-01	1923-09-05
1924	1924-07-28	1924-08-30
1925	1925-05-22	1925-09-19
1929	1929-05-28	1929-09-24
1930	1930-04-10	1930-09-23
1931	1931-05-27	1931-09-21
1932	1932-05-14	1932-08-31
1933	1933-06-03	1933-09-09
1934	1934-05-05	1934-08-19
1935	1935-06-13	1935-09-24
1936	1936-05-06	1936-09-15
1937	1937-05-29	1937-09-24
1938	1938-06-06	1938-08-24
1940	1940-05-13	1940-09-21
1941	1941-05-20	1941-09-22
1942	1942-05-30	1942-09-12
1943	1943-05-30	1943-09-01
1944	1944-05-30	1944-09-18
1945	1945-06-24	1945-09-08
1946	1946-06-07	1946-09-18
1947	1947-06-10	1947-10-23
1948	1948-05-21	1948-09-20
1950	1950-06-07	1950-08-24
1951	1951-07-08	1951-08-29
1952	1952-04-29	1952-09-14
1953	1953-05-31	1953-10-03
1954	1954-06-12	1954-09-07
1955	1955-06-21	1955-09-19
1956	1956-05-23	1956-08-28
1957	1957-05-02	1957-09-02
1959	1959-05-02	1959-09-09
1960	1960-07-21	1960-09-08
1961	1961-06-10	1961-09-09
1962	1962-05-16	1962-08-30
1963	1963-06-03	1963-10-07
1964	1964-05-22	1964-08-06
1965	1965-05-02	1965-08-17
1966	1966-06-24	1966-09-02
1967	1967-05-26	1967-08-01
1968	1968-06-05	1968-08-24
1969	1969-07-04	1969-08-31
1970	1970-04-29	1970-08-28
1971	1971-06-05	1971-09-08
1972	1972-05-18	1972-08-30
1973	1973-06-09	1973-08-30
1974	1974-07-02	1974-08-19
1975	1975-05-19	1975-08-23
1976	1976-06-06	1976-10-02
1977	1977-05-18	1977-08-27
1978	1978-05-26	1978-09-12
1981	1981-07-05	1981-08-03
1982	1982-06-28	1982-08-19
1983	1983-06-21	1983-09-09
1984	1984-07-09	1984-08-29
1985	1985-04-18	1985-09-07
1986	1986-05-31	1986-08-16
1987	1987-06-07	1987-08-02
1991	1991-05-28	1991-08-30
1992	1992-05-01	1992-08-09
1993	1993-07-11	1993-08-27
1995	1995-06-17	1995-08-30
1996	1996-06-27	1996-08-06
1997	1997-06-23	1997-10-03
1998	1998-05-18	1998-09-13
1999	1999-06-06	1999-09-04
2000	2000-06-08	2000-09-09
2001	2001-05-15	2001-08-09
2002	2002-04-15	2002-09-09
2003	2003-06-24	2003-09-11
2006	2006-05-29	2006-08-05
2007	2007-05-15	2007-09-05
2008	2008-07-17	2008-09-03
2009	2009-06-24	2009-08-15
2010	2010-05-25	2010-08-30
2011	2011-06-04	2011-09-02
2012	2012-05-28	2012-09-05
2013	2013-05-15	2013-09-11
2014	2014-07-23	2014-08-23
2015	2015-06-10	2015-09-07
2016	2016-06-11	2016-08-04
2017	2017-06-04	2017-09-26
2018	2018-05-27	2018-09-18
2019	2019-06-30	2019-07-20
2020	2020-06-03	2020-08-28
2021	2021-05-02	2021-08-11
2022	2022-05-12	2022-07-19
2023	2023-06-01	2023-10-02
2024	2024-08-01	2024-09-16
2025	2025-06-22	2025-08-16
2026	2026-06-30	2026-09-02

Every Fixed Threshold

Fixed thresholds at Viroqua
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	118	60	1934	13
35 C (95 F): Days	46	24	1931	2
40 C (104 F): Days	2	5	1936	5
90 F (32.2 C): Days	102	41	1934	4
100 F (37.8 C): Days	11	9	1936	1
0 C (32 F): Ice days (max	118	105	2014	41
0 C (32 F): Frost days (min	124	184	2013	91
-10 C (14 F): Days with min	124	97	1978	38
-20 C (-4 F): Days with min	124	48	1978	11
-30 C (-22 F): Days with min	60	12	1985	2
-40 C (-40 F): Days with min	1	1	1963	1
20 C (68 F): Tropical nights (min	122	24	1931	10
25 C (77 F): Days with min	9	6	1931	1
10 mm (0.39 in): Days with 10 mm or more rain	126	44	2018	25
25 mm (0.98 in): Days with 25 mm or more rain	126	16	2007	10
50 mm (1.97 in): Days with 50 mm or more rain	102	5	1924	3
100 mm (3.94 in): Days with 100 mm or more rain	13	2	2000	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1917	1
10 cm (3.9 in): Days with 10 cm or more snowfall	111	8	1937	2
25 cm (9.8 in): Days with 25 cm or more snowfall	16	3	1959	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.

Download the Data

Data for Viroqua 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).

Viroqua Threshold Days by Year (USC00478827)

Key Facts for Viroqua Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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