Imlay Threshold Days by Year (USC00263957)

18 fixed thresholds counted per year at Imlay (USC00263957): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Imlay Thresholds

Imlay: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1930 with 215.
Imlay: nights with a minimum temperature at or below -10 C (14 F) in 78 years, most in 1948 with 58.
Imlay: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 1960 with 112.
Imlay: days with a maximum temperature at or above 35 C (95 F) in 77 years, most in 1919 with 53.
18 fixed thresholds have at least one qualifying day at Imlay.

Days at or above 30 C (86 F)

77 years with a qualifying day

Days per year at Imlay with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1960.

Days at or above 30 C (86 F) per year at Imlay
Year	Days	Decade average
1916	51	72.8
1917	79	72.8
1918	76	72.8
1919	85	72.8
1920	39	68.7
1921	82	68.7
1922	80	68.7
1923	69	68.7
1924	91	68.7
1925	55	68.7
1926	73	68.7
1927	62	68.7
1928	71	68.7
1929	65	68.7
1930	90	85.4
1931	111	85.4
1932	76	85.4
1933	100	85.4
1934	78	85.4
1935	60	85.4
1936	85	85.4
1939	83	85.4
1940	100	89
1941	68	89
1943	86	89
1947	105	89
1948	86	89
1950	95	91.1
1951	91	91.1
1953	86	91.1
1955	83	91.1
1956	96	91.1
1957	89	91.1
1958	94	91.1
1959	95	91.1
1960	112	86.3
1961	91	86.3
1962	93	86.3
1963	73	86.3
1964	74	86.3
1965	57	86.3
1966	93	86.3
1967	97	86.3
1972	82	73.5
1975	65	73.5
1983	47	72.2
1984	70	72.2
1985	62	72.2
1986	82	72.2
1987	85	72.2
1988	87	72.2
1990	68	73.3
1991	80	73.3
1992	72	73.3
1993	55	73.3
1994	88	73.3
1999	77	73.3
2000	82	85.3
2001	99	85.3
2002	80	85.3
2003	97	85.3
2004	82	85.3
2005	67	85.3
2006	84	85.3
2007	87	85.3
2008	91	85.3
2009	84	85.3
2010	75	80.8
2011	80	80.8
2012	89	80.8
2013	81	80.8
2014	76	80.8
2015	90	80.8
2016	82	80.8
2017	91	80.8
2018	76	80.8
2019	68	80.8

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

First to last qualifying date each year at Imlay
Year	First date	Last date
1916	1916-06-13	1916-09-20
1917	1917-06-08	1917-10-14
1918	1918-06-03	1918-09-20
1919	1919-05-18	1919-09-10
1920	1920-06-10	1920-09-18
1921	1921-05-28	1921-09-25
1922	1922-05-17	1922-09-16
1923	1923-06-10	1923-09-12
1924	1924-05-09	1924-09-14
1925	1925-06-18	1925-08-31
1926	1926-05-31	1926-09-09
1927	1927-06-05	1927-09-21
1928	1928-05-05	1928-09-17
1929	1929-06-03	1929-09-24
1930	1930-05-26	1930-09-08
1931	1931-05-05	1931-10-03
1932	1932-05-17	1932-09-22
1933	1933-05-29	1933-10-11
1934	1934-04-21	1934-10-11
1935	1935-06-05	1935-09-20
1936	1936-05-12	1936-09-24
1939	1939-05-19	1939-10-14
1940	1940-05-17	1940-09-23
1941	1941-05-22	1941-10-18
1943	1943-04-18	1943-10-02
1947	1947-05-01	1947-10-05
1948	1948-05-15	1948-09-22
1950	1950-05-21	1950-10-31
1951	1951-05-25	1951-09-28
1953	1953-06-17	1953-10-08
1955	1955-05-20	1955-09-14
1956	1956-05-17	1956-10-02
1957	1957-06-01	1957-09-28
1958	1958-05-17	1958-10-15
1959	1959-05-12	1959-10-25
1960	1960-05-09	1960-10-02
1961	1961-05-22	1961-10-15
1962	1962-06-02	1962-10-02
1963	1963-05-18	1963-10-03
1964	1964-05-19	1964-10-07
1965	1965-06-04	1965-10-09
1966	1966-05-02	1966-10-01
1967	1967-05-16	1967-09-29
1972	1972-05-14	1972-09-18
1975	1975-05-14	1975-10-01
1983	1983-05-24	1983-09-17
1984	1984-05-13	1984-09-18
1985	1985-04-14	1985-08-30
1986	1986-05-24	1986-09-07
1987	1987-04-26	1987-10-05
1988	1988-05-11	1988-10-04
1990	1990-06-09	1990-10-01
1991	1991-06-08	1991-10-16
1992	1992-04-29	1992-09-29
1993	1993-05-10	1993-10-03
1994	1994-05-11	1994-09-27
1999	1999-05-27	1999-09-23
2000	2000-05-21	2000-10-07
2001	2001-05-08	2001-10-03
2002	2002-05-29	2002-09-24
2003	2003-05-22	2003-09-30
2004	2004-05-03	2004-09-25
2005	2005-05-27	2005-09-30
2006	2006-05-13	2006-09-13
2007	2007-05-16	2007-09-13
2008	2008-05-16	2008-10-01
2009	2009-05-16	2009-09-28
2010	2010-06-14	2010-10-02
2011	2011-06-21	2011-09-30
2012	2012-04-22	2012-10-02
2013	2013-05-12	2013-09-16
2014	2014-05-15	2014-09-24
2015	2015-05-31	2015-10-15
2016	2016-06-01	2016-09-28
2017	2017-05-04	2017-09-12
2018	2018-05-08	2018-09-28
2019	2019-06-05	2019-09-15

Every Fixed Threshold

Fixed thresholds at Imlay
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	77	112	1960	68
35 C (95 F): Days	77	53	1919	14
40 C (104 F): Days	30	14	1960	1
90 F (32.2 C): Days	77	91	1931	43
100 F (37.8 C): Days	67	28	1959	4
110 F (43.3 C): Days	2	1	1930	1
0 C (32 F): Ice days (max	71	37	2013	8
0 C (32 F): Frost days (min	79	215	1930	11
-10 C (14 F): Days with min	78	58	1948	23
-20 C (-4 F): Days with min	50	25	1917	1
-30 C (-22 F): Days with min	5	5	1917	3
20 C (68 F): Tropical nights (min	63	15	1943	1
25 C (77 F): Days with min	6	4	2005	4
10 mm (0.39 in): Days with 10 mm or more rain	76	9	1918	5
25 mm (0.98 in): Days with 25 mm or more rain	20	2	1951	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1922	1
10 cm (3.9 in): Days with 10 cm or more snowfall	25	3	1962	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1962	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

Data for Imlay 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Imlay Threshold Days by Year (USC00263957)

Key Facts for Imlay Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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