Mt Ayr Threshold Days by Year (USC00135769)

19 fixed thresholds counted per year at Mt Ayr (USC00135769): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Ayr Thresholds

Mt Ayr: days with a maximum temperature at or above 30 C (86 F) in 116 years, most in 1911 with 91.
Mt Ayr: days with a maximum temperature at or above 90 F (32.2 C) in 116 years, most in 1934 with 76.
Mt Ayr: days with a maximum temperature at or below 0 C (32 F) in 116 years, most in 1960 with 68.
Mt Ayr: nights with a minimum temperature at or below 0 C (32 F) in 114 years, most in 2022 with 166.
19 fixed thresholds have at least one qualifying day at Mt Ayr.

Days at or above 30 C (86 F)

116 years with a qualifying day

Days per year at Mt Ayr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 1911.

Days at or above 30 C (86 F) per year at Mt Ayr
Year	Days	Decade average
1896	61	64
1897	84	64
1898	61	64
1899	50	64
1900	74	56.8
1901	80	56.8
1902	33	56.8
1903	29	56.8
1904	41	56.8
1905	54	56.8
1906	70	56.8
1907	58	56.8
1908	64	56.8
1909	65	56.8
1910	72	63.2
1911	91	63.2
1912	62	63.2
1913	85	63.2
1914	82	63.2
1915	14	63.2
1916	56	63.2
1917	43	63.2
1918	65	63.2
1919	62	63.2
1920	41	43.5
1921	63	43.5
1922	41	43.5
1923	37	43.5
1924	22	43.5
1925	58	43.5
1926	53	43.5
1927	44	43.5
1928	38	43.5
1929	38	43.5
1930	58	69.6
1931	69	69.6
1932	42	69.6
1933	77	69.6
1934	88	69.6
1935	59	69.6
1936	80	69.6
1937	78	69.6
1938	74	69.6
1939	71	69.6
1940	46	49.3
1941	64	49.3
1942	43	49.3
1943	53	49.3
1944	42	49.3
1945	37	49.3
1946	43	49.3
1947	64	49.3
1948	63	49.3
1949	38	49.3
1950	10	49.2
1951	23	49.2
1952	58	49.2
1953	76	49.2
1954	69	49.2
1955	67	49.2
1956	69	49.2
1957	45	49.2
1958	36	49.2
1959	39	49.2
1960	39	39
1961	23	39
1962	45	39
1963	54	39
1966	34	39
1970	44	45.2
1971	53	45.2
1972	26	45.2
1973	40	45.2
1974	33	45.2
1975	60	45.2
1977	49	45.2
1978	58	45.2
1979	44	45.2
1980	48	43.3
1981	36	43.3
1982	35	43.3
1984	58	43.3
1985	47	43.3
1986	22	43.3
1988	71	43.3
1989	29	43.3
1990	35	29.1
1991	41	29.1
1992	7	29.1
1993	18	29.1
1994	28	29.1
1995	40	29.1
1996	12	29.1
1997	42	29.1
1998	36	29.1
1999	32	29.1
2000	40	30.2
2001	36	30.2
2002	47	30.2
2004	19	30.2
2008	20	30.2
2009	19	30.2
2010	41	39.9
2011	42	39.9
2012	66	39.9
2013	43	39.9
2014	13	39.9
2015	27	39.9
2016	42	39.9
2017	40	39.9
2018	52	39.9
2019	33	39.9
2020	44	46.8
2021	52	46.8
2022	64	46.8
2026	27	46.8

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

First to last qualifying date each year at Mt Ayr
Year	First date	Last date
1896	1896-04-15	1896-09-08
1897	1897-04-22	1897-10-15
1898	1898-04-16	1898-10-02
1899	1899-06-12	1899-10-22
1900	1900-05-13	1900-10-04
1901	1901-05-18	1901-09-24
1902	1902-04-20	1902-08-20
1903	1903-07-06	1903-08-27
1904	1904-05-24	1904-10-04
1905	1905-04-09	1905-10-05
1906	1906-04-24	1906-09-17
1907	1907-03-21	1907-09-18
1908	1908-05-17	1908-10-14
1909	1909-05-05	1909-10-03
1910	1910-03-22	1910-09-30
1911	1911-05-09	1911-09-28
1912	1912-05-21	1912-10-05
1913	1913-04-30	1913-09-10
1914	1914-05-10	1914-09-16
1915	1915-04-28	1915-09-13
1916	1916-04-12	1916-09-20
1917	1917-05-19	1917-09-15
1918	1918-05-04	1918-10-15
1919	1919-06-13	1919-09-19
1920	1920-06-10	1920-10-13
1921	1921-05-21	1921-10-16
1922	1922-06-08	1922-10-05
1923	1923-05-31	1923-09-04
1924	1924-06-14	1924-08-30
1925	1925-05-20	1925-09-19
1926	1926-04-30	1926-09-21
1927	1927-05-23	1927-10-30
1928	1928-05-09	1928-10-10
1929	1929-04-04	1929-09-25
1930	1930-04-10	1930-09-22
1931	1931-05-16	1931-10-10
1932	1932-05-14	1932-09-18
1933	1933-05-16	1933-09-21
1934	1934-05-06	1934-09-25
1935	1935-07-02	1935-09-24
1936	1936-04-20	1936-09-15
1937	1937-05-20	1937-10-29
1938	1938-05-18	1938-10-16
1939	1939-05-17	1939-10-08
1940	1940-05-13	1940-10-25
1941	1941-05-14	1941-09-20
1942	1942-05-28	1942-09-16
1943	1943-04-29	1943-09-05
1944	1944-05-14	1944-09-17
1945	1945-06-27	1945-09-23
1946	1946-06-06	1946-09-26
1947	1947-05-14	1947-10-21
1948	1948-06-03	1948-09-20
1949	1949-04-25	1949-10-07
1950	1950-05-04	1950-09-19
1951	1951-05-31	1951-10-04
1952	1952-05-02	1952-09-30
1953	1953-05-25	1953-10-19
1954	1954-04-26	1954-10-03
1955	1955-06-02	1955-09-18
1956	1956-04-27	1956-10-12
1957	1957-06-05	1957-09-01
1958	1958-05-27	1958-09-24
1959	1959-06-16	1959-09-20
1960	1960-06-04	1960-09-08
1961	1961-04-23	1961-09-09
1962	1962-05-05	1962-09-13
1963	1963-05-08	1963-10-10
1966	1966-05-05	1966-08-31
1970	1970-04-28	1970-09-10
1971	1971-06-04	1971-10-01
1972	1972-06-04	1972-09-20
1973	1973-06-08	1973-09-22
1974	1974-06-14	1974-08-27
1975	1975-05-19	1975-10-13
1977	1977-06-06	1977-09-07
1978	1978-05-24	1978-09-18
1979	1979-05-29	1979-09-28
1980	1980-04-21	1980-09-21
1981	1981-05-27	1981-09-30
1982	1982-06-28	1982-09-01
1984	1984-06-14	1984-10-04
1985	1985-04-18	1985-09-19
1986	1986-03-30	1986-08-25
1988	1988-05-14	1988-09-22
1989	1989-04-23	1989-08-24
1990	1990-06-13	1990-09-27
1991	1991-05-29	1991-09-14
1992	1992-06-17	1992-08-11
1993	1993-06-17	1993-08-27
1994	1994-05-24	1994-10-01
1995	1995-06-08	1995-09-14
1996	1996-05-18	1996-08-15
1997	1997-06-20	1997-10-07
1998	1998-05-20	1998-09-30
1999	1999-06-05	1999-09-24
2000	2000-04-06	2000-09-20
2001	2001-06-12	2001-09-05
2002	2002-06-01	2002-10-01
2004	2004-04-17	2004-09-16
2008	2008-05-26	2008-09-03
2009	2009-05-25	2009-08-15
2010	2010-05-25	2010-10-11
2011	2011-04-04	2011-09-12
2012	2012-04-03	2012-09-12
2013	2013-05-15	2013-09-20
2014	2014-05-08	2014-09-05
2015	2015-06-10	2015-09-17
2016	2016-06-10	2016-09-25
2017	2017-05-16	2017-09-25
2018	2018-05-24	2018-09-21
2019	2019-05-17	2019-10-02
2020	2020-06-03	2020-09-27
2021	2021-06-06	2021-09-29
2022	2022-05-10	2022-09-21
2026	2026-03-22	2026-09-03

Every Fixed Threshold

Fixed thresholds at Mt Ayr
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	116	91	1911	27
35 C (95 F): Days	91	53	1934	2
40 C (104 F): Days	13	17	1934	1
90 F (32.2 C): Days	116	76	1934	9
100 F (37.8 C): Days	35	33	1936	6
110 F (43.3 C): Days	2	4	1934	1
0 C (32 F): Ice days (max	116	68	1960	9
0 C (32 F): Frost days (min	114	166	2022	34
-10 C (14 F): Days with min	114	69	2022	10
-20 C (-4 F): Days with min	111	31	1963	3
-30 C (-22 F): Days with min	16	5	1996	1
20 C (68 F): Tropical nights (min	114	52	1936	9
25 C (77 F): Days with min	28	10	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	113	45	1973	14
25 mm (0.98 in): Days with 25 mm or more rain	113	20	2010	9
50 mm (1.97 in): Days with 50 mm or more rain	94	6	2008	2
100 mm (3.94 in): Days with 100 mm or more rain	20	2	1928	2
10 cm (3.9 in): Days with 10 cm or more snowfall	62	5	1936	2
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1942	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Mt Ayr 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Mt Ayr Threshold Days by Year (USC00135769)

Key Facts for Mt Ayr Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related