Mayville Threshold Days by Year (USC00325660)

21 fixed thresholds counted per year at Mayville (USC00325660): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mayville Thresholds

Mayville: days with a maximum temperature at or above 30 C (86 F) in 102 years, most in 1936 with 92.
Mayville: days with a maximum temperature at or below 0 C (32 F) in 102 years, most in 2013 with 130.
Mayville: days with a maximum temperature at or above 90 F (32.2 C) in 100 years, most in 1936 with 65.
Mayville: days with 10 mm (0.39 in) or more of precipitation in 99 years, most in 1916 with 25.
21 fixed thresholds have at least one qualifying day at Mayville.

Days at or above 30 C (86 F)

102 years with a qualifying day

Days per year at Mayville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1936.

Days at or above 30 C (86 F) per year at Mayville
Year	Days	Decade average
1900	46	26.6
1901	37	26.6
1903	16	26.6
1905	11	26.6
1908	23	26.6
1911	24	34
1912	24	34
1913	43	34
1914	40	34
1915	22	34
1916	38	34
1917	39	34
1918	29	34
1919	47	34
1920	24	30
1921	26	30
1924	11	30
1925	40	30
1926	38	30
1927	19	30
1928	33	30
1929	49	30
1930	42	55.9
1931	52	55.9
1932	36	55.9
1933	58	55.9
1934	72	55.9
1935	39	55.9
1936	92	55.9
1937	47	55.9
1938	50	55.9
1939	71	55.9
1940	43	32.1
1941	36	32.1
1943	29	32.1
1944	23	32.1
1945	24	32.1
1946	27	32.1
1947	33	32.1
1948	36	32.1
1949	38	32.1
1950	19	26.2
1951	14	26.2
1952	36	26.2
1953	31	26.2
1954	22	26.2
1955	39	26.2
1956	13	26.2
1957	22	26.2
1958	21	26.2
1959	45	26.2
1960	37	29
1961	48	29
1962	18	29
1963	40	29
1964	29	29
1965	9	29
1966	31	29
1967	27	29
1968	19	29
1969	32	29
1970	44	31.4
1971	17	31.4
1972	30	31.4
1973	34	31.4
1974	24	31.4
1975	24	31.4
1976	61	31.4
1977	28	31.4
1978	31	31.4
1979	21	31.4
1980	49	37.7
1981	28	37.7
1983	43	37.7
1984	43	37.7
1985	17	37.7
1986	33	37.7
1987	51	37.7
2003	23	21
2004	9	21
2005	29	21
2006	39	21
2007	27	21
2008	12	21
2009	8	21
2010	20	18.5
2011	20	18.5
2012	42	18.5
2013	24	18.5
2014	11	18.5
2015	14	18.5
2016	13	18.5
2017	9	18.5
2018	24	18.5
2019	8	18.5
2020	18	14.6
2021	32	14.6
2022	16	14.6
2023	21	14.6
2024	3	14.6
2025	4	14.6
2026	8	14.6

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

First to last qualifying date each year at Mayville
Year	First date	Last date
1900	1900-04-21	1900-09-01
1901	1901-05-01	1901-09-04
1903	1903-05-17	1903-08-21
1905	1905-07-12	1905-08-29
1908	1908-04-21	1908-09-22
1911	1911-05-17	1911-08-15
1912	1912-05-09	1912-09-08
1913	1913-05-27	1913-09-07
1914	1914-05-27	1914-10-01
1915	1915-04-22	1915-09-08
1916	1916-07-01	1916-09-05
1917	1917-05-16	1917-09-23
1918	1918-05-04	1918-08-19
1919	1919-05-27	1919-09-09
1920	1920-06-07	1920-10-06
1921	1921-05-21	1921-09-03
1924	1924-07-03	1924-08-30
1925	1925-05-19	1925-09-04
1926	1926-04-15	1926-09-07
1927	1927-06-19	1927-09-15
1928	1928-05-07	1928-09-30
1929	1929-05-25	1929-09-23
1930	1930-05-03	1930-09-11
1931	1931-05-15	1931-10-02
1932	1932-05-13	1932-09-14
1933	1933-05-17	1933-09-18
1934	1934-04-29	1934-10-14
1935	1935-07-01	1935-09-17
1936	1936-05-06	1936-10-09
1937	1937-05-28	1937-09-22
1938	1938-06-05	1938-10-03
1939	1939-05-05	1939-09-18
1940	1940-05-31	1940-09-28
1941	1941-05-04	1941-09-19
1943	1943-07-04	1943-09-01
1944	1944-05-28	1944-08-19
1945	1945-06-21	1945-09-07
1946	1946-06-14	1946-08-19
1947	1947-07-03	1947-10-05
1948	1948-05-19	1948-09-16
1949	1949-06-10	1949-09-24
1950	1950-06-06	1950-09-07
1951	1951-05-23	1951-08-04
1952	1952-04-26	1952-09-28
1953	1953-05-07	1953-10-01
1954	1954-06-13	1954-08-31
1955	1955-05-02	1955-09-17
1956	1956-06-08	1956-09-27
1957	1957-07-01	1957-08-31
1958	1958-05-12	1958-09-23
1959	1959-05-02	1959-09-09
1960	1960-06-25	1960-09-20
1961	1961-05-31	1961-09-09
1962	1962-06-24	1962-09-02
1963	1963-05-07	1963-09-30
1964	1964-05-20	1964-09-09
1965	1965-05-13	1965-08-16
1966	1966-05-21	1966-09-12
1967	1967-05-24	1967-09-07
1968	1968-05-01	1968-09-14
1969	1969-05-14	1969-09-12
1970	1970-05-17	1970-09-20
1971	1971-07-24	1971-09-07
1972	1972-05-16	1972-08-30
1973	1973-06-01	1973-08-31
1974	1974-06-03	1974-09-26
1975	1975-06-28	1975-10-07
1976	1976-05-09	1976-09-30
1977	1977-04-09	1977-07-28
1978	1978-05-25	1978-09-10
1979	1979-06-13	1979-09-17
1980	1980-04-20	1980-09-30
1981	1981-05-21	1981-09-12
1983	1983-06-10	1983-09-27
1984	1984-05-16	1984-09-21
1985	1985-04-29	1985-08-14
1986	1986-05-04	1986-08-20
1987	1987-04-18	1987-09-15
2003	2003-04-14	2003-10-20
2004	2004-06-30	2004-09-20
2005	2005-04-19	2005-10-01
2006	2006-05-24	2006-10-02
2007	2007-05-19	2007-09-24
2008	2008-07-02	2008-09-20
2009	2009-06-21	2009-08-14
2010	2010-05-28	2010-08-30
2011	2011-07-01	2011-10-06
2012	2012-05-15	2012-09-11
2013	2013-05-14	2013-09-07
2014	2014-05-25	2014-09-28
2015	2015-06-10	2015-10-12
2016	2016-05-06	2016-08-24
2017	2017-06-03	2017-09-13
2018	2018-05-25	2018-09-17
2019	2019-05-31	2019-09-21
2020	2020-06-02	2020-08-23
2021	2021-06-03	2021-09-29
2022	2022-06-13	2022-09-01
2023	2023-05-24	2023-10-02
2024	2024-06-13	2024-07-27
2025	2025-05-12	2025-07-05
2026	2026-05-27	2026-07-30

Every Fixed Threshold

Fixed thresholds at Mayville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	102	92	1936	8
35 C (95 F): Days	82	39	1936	1
40 C (104 F): Days	12	13	1936	1
45 C (113 F): Days	1	4	1936	4
90 F (32.2 C): Days	100	65	1936	4
100 F (37.8 C): Days	34	19	1936	1
110 F (43.3 C): Days	1	6	1936	6
0 C (32 F): Ice days (max	102	130	2013	61
0 C (32 F): Frost days (min	97	212	1917	125
-10 C (14 F): Days with min	97	126	1955	73
-20 C (-4 F): Days with min	97	71	1916	39
-30 C (-22 F): Days with min	93	26	1917	5
-40 C (-40 F): Days with min	2	1	1912	1
20 C (68 F): Tropical nights (min	79	43	1911	1
25 C (77 F): Days with min	9	13	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	99	25	1916	14
25 mm (0.98 in): Days with 25 mm or more rain	97	9	1912	5
50 mm (1.97 in): Days with 50 mm or more rain	41	3	1900	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	65	5	1948	2
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

Data for Mayville 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).

Mayville Threshold Days by Year (USC00325660)

Key Facts for Mayville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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