Chicago UNIV Threshold Days by Year (USW00014892)

18 fixed thresholds counted per year at Chicago UNIV (USW00014892): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chicago UNIV Thresholds

Chicago UNIV: days with a maximum temperature at or above 30 C (86 F) in 63 years, most in 1988 with 68.
Chicago UNIV: days with a maximum temperature at or above 90 F (32.2 C) in 63 years, most in 1988 with 51.
Chicago UNIV: days with a maximum temperature at or below 0 C (32 F) in 63 years, most in 1963 with 66.
Chicago UNIV: nights with a minimum temperature at or below 0 C (32 F) in 63 years, most in 1936 with 130.
18 fixed thresholds have at least one qualifying day at Chicago UNIV.

Days at or above 30 C (86 F)

63 years with a qualifying day

Days per year at Chicago UNIV with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 1988.

Days at or above 30 C (86 F) per year at Chicago UNIV
Year	Days	Decade average
1926	16	21.3
1927	22	21.3
1928	23	21.3
1929	24	21.3
1930	35	37.5
1931	44	37.5
1932	33	37.5
1933	45	37.5
1934	40	37.5
1935	31	37.5
1936	45	37.5
1937	39	37.5
1938	27	37.5
1939	36	37.5
1940	28	32
1941	40	32
1942	24	32
1944	39	32
1949	29	32
1950	17	29
1951	15	29
1952	37	29
1953	39	29
1954	36	29
1955	42	29
1956	29	29
1957	17	29
1958	14	29
1959	44	29
1960	19	33.2
1961	23	33.2
1962	41	33.2
1963	32	33.2
1964	45	33.2
1965	30	33.2
1966	50	33.2
1967	22	33.2
1968	34	33.2
1969	36	33.2
1970	46	41.4
1971	47	41.4
1972	28	41.4
1973	40	41.4
1974	36	41.4
1975	48	41.4
1976	43	41.4
1977	48	41.4
1978	44	41.4
1979	34	41.4
1980	45	45.3
1981	25	45.3
1982	30	45.3
1983	66	45.3
1984	50	45.3
1985	40	45.3
1986	43	45.3
1987	62	45.3
1988	68	45.3
1989	24	45.3
1990	43	40
1991	61	40
1992	23	40
1993	33	40

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

First to last qualifying date each year at Chicago UNIV
Year	First date	Last date
1926	1926-04-30	1926-09-18
1927	1927-05-21	1927-09-15
1928	1928-05-03	1928-10-11
1929	1929-05-28	1929-09-04
1930	1930-04-10	1930-09-23
1931	1931-05-18	1931-09-21
1932	1932-05-14	1932-09-19
1933	1933-05-23	1933-09-25
1934	1934-05-06	1934-09-25
1935	1935-07-03	1935-09-25
1936	1936-05-07	1936-09-22
1937	1937-05-30	1937-09-23
1938	1938-05-02	1938-09-04
1939	1939-05-30	1939-09-28
1940	1940-06-02	1940-09-21
1941	1941-05-15	1941-09-24
1942	1942-04-29	1942-09-18
1944	1944-05-17	1944-09-19
1949	1949-05-03	1949-08-27
1950	1950-05-24	1950-08-27
1951	1951-05-01	1951-10-04
1952	1952-05-01	1952-09-28
1953	1953-05-25	1953-09-29
1954	1954-05-31	1954-10-03
1955	1955-05-03	1955-09-19
1956	1956-05-12	1956-09-22
1957	1957-06-16	1957-09-01
1958	1958-06-30	1958-09-09
1959	1959-05-02	1959-09-22
1960	1960-04-23	1960-09-08
1961	1961-06-10	1961-09-11
1962	1962-04-26	1962-10-15
1963	1963-05-08	1963-10-23
1964	1964-05-07	1964-09-21
1965	1965-05-01	1965-09-20
1966	1966-05-05	1966-09-03
1967	1967-05-26	1967-10-04
1968	1968-06-05	1968-09-03
1969	1969-05-16	1969-10-01
1970	1970-04-29	1970-09-21
1971	1971-05-17	1971-10-02
1972	1972-06-03	1972-08-31
1973	1973-06-09	1973-09-27
1974	1974-05-21	1974-09-20
1975	1975-05-19	1975-10-14
1976	1976-06-08	1976-09-14
1977	1977-04-19	1977-09-01
1978	1978-05-27	1978-09-21
1979	1979-05-10	1979-09-12
1980	1980-04-22	1980-09-21
1981	1981-04-01	1981-09-14
1982	1982-05-06	1982-10-07
1983	1983-06-11	1983-09-19
1984	1984-05-18	1984-09-20
1985	1985-04-20	1985-09-21
1986	1986-04-27	1986-09-28
1987	1987-04-21	1987-09-28
1988	1988-05-28	1988-09-19
1989	1989-05-25	1989-09-09
1990	1990-04-25	1990-10-07
1991	1991-05-14	1991-09-16
1992	1992-05-01	1992-09-17
1993	1993-05-09	1993-08-31

Every Fixed Threshold

Fixed thresholds at Chicago UNIV
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	63	68	1988	33
35 C (95 F): Days	49	26	1988	16
40 C (104 F): Days	2	1	1934	1
90 F (32.2 C): Days	63	51	1988	11
100 F (37.8 C): Days	16	9	1988	4
0 C (32 F): Ice days (max	63	66	1963	36
0 C (32 F): Frost days (min	63	130	1936	106
-10 C (14 F): Days with min	63	56	1963	15
-20 C (-4 F): Days with min	45	17	1936	1
-30 C (-22 F): Days with min	1	1	1985	1
20 C (68 F): Tropical nights (min	63	60	1955	43
25 C (77 F): Days with min	39	17	1988	3
10 mm (0.39 in): Days with 10 mm or more rain	63	41	1993	41
25 mm (0.98 in): Days with 25 mm or more rain	63	14	1954	8
50 mm (1.97 in): Days with 50 mm or more rain	45	4	1954	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1957	1
10 cm (3.9 in): Days with 10 cm or more snowfall	28	4	1926	1
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1930	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Chicago UNIV 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).

Chicago UNIV Threshold Days by Year (USW00014892)

Key Facts for Chicago UNIV Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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