Adrian Threshold Days by Year (USC00350041)

16 fixed thresholds counted per year at Adrian (USC00350041): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Adrian Thresholds

Adrian: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1957 with 9.
Adrian: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 1951 with 169.
Adrian: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 1922 with 104.
Adrian: days with a maximum temperature at or above 35 C (95 F) in 51 years, most in 1961 with 55.
16 fixed thresholds have at least one qualifying day at Adrian.

Days at or above 30 C (86 F)

51 years with a qualifying day

Days per year at Adrian with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 104 in 1922.

Days at or above 30 C (86 F) per year at Adrian
Year	Days	Decade average
1917	86	76.7
1918	73	76.7
1919	71	76.7
1920	64	81.6
1921	70	81.6
1922	104	81.6
1923	90	81.6
1924	89	81.6
1925	74	81.6
1928	85	81.6
1929	77	81.6
1930	73	82.8
1931	90	82.8
1932	76	82.8
1933	84	82.8
1934	101	82.8
1935	88	82.8
1936	90	82.8
1937	76	82.8
1938	73	82.8
1939	77	82.8
1940	92	80.7
1941	65	80.7
1942	76	80.7
1943	82	80.7
1944	72	80.7
1945	76	80.7
1946	89	80.7
1947	92	80.7
1948	82	80.7
1951	63	71.3
1952	68	71.3
1953	57	71.3
1954	55	71.3
1955	63	71.3
1956	87	71.3
1957	87	71.3
1958	88	71.3
1959	74	71.3
1960	93	86
1961	99	86
1962	86	86
1963	92	86
1964	69	86
1965	65	86
1966	92	86
1967	103	86
1968	72	86
1969	89	86
1970	95	91
1971	87	91

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

First to last qualifying date each year at Adrian
Year	First date	Last date
1917	1917-06-14	1917-09-21
1918	1918-06-04	1918-09-28
1919	1919-05-18	1919-09-15
1920	1920-06-07	1920-10-05
1921	1921-06-06	1921-09-02
1922	1922-05-16	1922-10-11
1923	1923-05-08	1923-09-16
1924	1924-05-02	1924-09-13
1925	1925-05-19	1925-09-25
1928	1928-05-05	1928-09-24
1929	1929-05-20	1929-09-17
1930	1930-05-27	1930-09-20
1931	1931-05-06	1931-09-17
1932	1932-05-12	1932-10-02
1933	1933-05-25	1933-10-08
1934	1934-04-12	1934-09-30
1935	1935-05-22	1935-10-03
1936	1936-04-17	1936-09-23
1937	1937-05-03	1937-09-19
1938	1938-05-26	1938-09-22
1939	1939-04-27	1939-09-27
1940	1940-05-09	1940-09-11
1941	1941-05-11	1941-09-10
1942	1942-04-21	1942-09-25
1943	1943-05-26	1943-10-03
1944	1944-05-14	1944-09-24
1945	1945-05-04	1945-09-15
1946	1946-04-25	1946-09-30
1947	1947-05-01	1947-09-27
1948	1948-05-16	1948-09-21
1951	1951-05-22	1951-09-19
1952	1952-06-02	1952-09-26
1953	1953-07-02	1953-09-16
1954	1954-05-09	1954-09-10
1955	1955-06-07	1955-09-06
1956	1956-04-21	1956-09-26
1957	1957-05-29	1957-09-30
1958	1958-05-10	1958-09-11
1959	1959-05-13	1959-09-13
1960	1960-05-10	1960-09-28
1961	1961-05-09	1961-09-16
1962	1962-04-14	1962-09-25
1963	1963-05-18	1963-10-03
1964	1964-05-16	1964-09-14
1965	1965-05-28	1965-08-19
1966	1966-05-02	1966-09-23
1967	1967-05-17	1967-09-29
1968	1968-04-29	1968-09-13
1969	1969-05-07	1969-09-13
1970	1970-05-04	1970-10-01
1971	1971-05-01	1971-10-07

Every Fixed Threshold

Fixed thresholds at Adrian
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	51	104	1922	87
35 C (95 F): Days	51	55	1961	41
40 C (104 F): Days	24	12	1942	3
90 F (32.2 C): Days	51	83	1922	62
100 F (37.8 C): Days	48	26	1942	18
110 F (43.3 C): Days	3	1	1940	1
0 C (32 F): Ice days (max	51	43	1930	12
0 C (32 F): Frost days (min	52	169	1951	138
-10 C (14 F): Days with min	50	52	1929	7
-20 C (-4 F): Days with min	21	11	1924	1
-30 C (-22 F): Days with min	5	2	1924	2
20 C (68 F): Tropical nights (min	45	7	1928	3
25 C (77 F): Days with min	3	1	1924	1
10 mm (0.39 in): Days with 10 mm or more rain	56	9	1957	4
25 mm (0.98 in): Days with 25 mm or more rain	10	1	1913	1
10 cm (3.9 in): Days with 10 cm or more snowfall	24	4	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

Data for Adrian 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).

Adrian Threshold Days by Year (USC00350041)

Key Facts for Adrian Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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