University Exp STN Threshold Days by Year (USC00509641)

15 fixed thresholds counted per year at University Exp STN (USC00509641): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for University Exp STN Thresholds

University Exp STN: nights with a minimum temperature at or below 0 C (32 F) in 118 years, most in 1933 with 267.
University Exp STN: nights with a minimum temperature at or below -10 C (14 F) in 118 years, most in 1992 with 177.
University Exp STN: nights with a minimum temperature at or below -20 C (-4 F) in 118 years, most in 1918 with 124.
University Exp STN: nights with a minimum temperature at or below -30 C (-22 F) in 118 years, most in 1956 with 74.
15 fixed thresholds have at least one qualifying day at University Exp STN.

Days at or above 30 C (86 F)

74 years with a qualifying day

Days per year at University Exp STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 2004.

Days at or above 30 C (86 F) per year at University Exp STN
Year	Days	Decade average
1912	1	5.1
1913	4	5.1
1915	9	5.1
1916	6	5.1
1917	1	5.1
1918	9	5.1
1919	6	5.1
1920	1	2.5
1921	2	2.5
1922	1	2.5
1923	8	2.5
1926	4	2.5
1927	1	2.5
1928	2	2.5
1929	1	2.5
1930	1	3.3
1931	2	3.3
1933	6	3.3
1934	6	3.3
1936	2	3.3
1937	5	3.3
1938	3	3.3
1939	1	3.3
1940	5	3.2
1942	4	3.2
1943	2	3.2
1946	2	3.2
1947	3	3.2
1948	3	3.2
1950	2	4.5
1951	2	4.5
1953	7	4.5
1955	4	4.5
1957	6	4.5
1958	6	4.5
1960	5	4.5
1962	2	4.5
1967	6	4.5
1968	5	4.5
1971	4	3.3
1972	4	3.3
1975	2	3.3
1976	3	3.3
1977	5	3.3
1978	2	3.3
1982	6	3.3
1983	3	3.3
1987	2	3.3
1989	2	3.3
1990	8	3.8
1991	4	3.8
1992	2	3.8
1993	3	3.8
1994	5	3.8
1997	3	3.8
1998	1	3.8
1999	4	3.8
2001	1	3.8
2003	2	3.8
2004	10	3.8
2009	2	3.8
2010	1	2.3
2011	1	2.3
2012	1	2.3
2015	1	2.3
2016	2	2.3
2017	3	2.3
2018	4	2.3
2019	5	2.3
2021	5	5.6
2022	5	5.6
2023	6	5.6
2024	6	5.6
2025	6	5.6

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

First to last qualifying date each year at University Exp STN
Year	First date	Last date
1912	1912-06-16	1912-06-16
1913	1913-06-18	1913-06-26
1915	1915-06-24	1915-07-22
1916	1916-06-22	1916-06-28
1917	1917-08-09	1917-08-09
1918	1918-07-09	1918-07-22
1919	1919-06-01	1919-08-04
1920	1920-07-31	1920-07-31
1921	1921-07-15	1921-08-06
1922	1922-05-29	1922-05-29
1923	1923-06-08	1923-08-20
1926	1926-06-18	1926-08-15
1927	1927-07-06	1927-07-06
1928	1928-06-10	1928-08-24
1929	1929-08-03	1929-08-03
1930	1930-06-21	1930-06-21
1931	1931-06-17	1931-06-22
1933	1933-06-21	1933-07-29
1934	1934-06-27	1934-08-06
1936	1936-06-16	1936-06-17
1937	1937-06-11	1937-06-21
1938	1938-06-27	1938-07-27
1939	1939-07-20	1939-07-20
1940	1940-07-11	1940-07-18
1942	1942-06-19	1942-06-24
1943	1943-07-06	1943-07-07
1946	1946-06-08	1946-07-12
1947	1947-05-28	1947-07-17
1948	1948-06-17	1948-06-19
1950	1950-06-18	1950-07-23
1951	1951-07-08	1951-07-16
1953	1953-06-03	1953-07-30
1955	1955-07-23	1955-07-26
1957	1957-06-09	1957-07-13
1958	1958-06-01	1958-07-05
1960	1960-05-24	1960-07-15
1962	1962-07-20	1962-08-01
1967	1967-06-18	1967-07-14
1968	1968-07-07	1968-07-24
1971	1971-06-23	1971-06-26
1972	1972-06-14	1972-07-12
1975	1975-07-10	1975-07-11
1976	1976-07-21	1976-08-01
1977	1977-07-29	1977-08-21
1978	1978-07-11	1978-07-30
1982	1982-06-26	1982-07-09
1983	1983-06-24	1983-07-06
1987	1987-06-21	1987-06-22
1989	1989-07-09	1989-07-10
1990	1990-07-01	1990-08-14
1991	1991-06-21	1991-07-01
1992	1992-06-29	1992-06-30
1993	1993-07-14	1993-07-16
1994	1994-06-14	1994-08-07
1997	1997-07-01	1997-07-03
1998	1998-07-05	1998-07-05
1999	1999-06-12	1999-08-05
2001	2001-06-24	2001-06-24
2003	2003-07-10	2003-07-21
2004	2004-06-19	2004-07-15
2009	2009-07-09	2009-07-14
2010	2010-08-16	2010-08-16
2011	2011-06-26	2011-06-26
2012	2012-06-24	2012-06-24
2015	2015-07-07	2015-07-07
2016	2016-07-14	2016-07-15
2017	2017-06-10	2017-07-15
2018	2018-06-22	2018-07-25
2019	2019-06-29	2019-07-24
2021	2021-07-02	2021-08-04
2022	2022-07-02	2022-07-09
2023	2023-07-23	2023-08-06
2024	2024-07-01	2024-08-06
2025	2025-06-16	2025-07-06

Every Fixed Threshold

Fixed thresholds at University Exp STN
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	74	10	2004	6
35 C (95 F): Days	1	1	1915	1
90 F (32.2 C): Days	29	3	1916	2
0 C (32 F): Ice days (max	114	177	1961	92
0 C (32 F): Frost days (min	118	267	1933	121
-10 C (14 F): Days with min	118	177	1992	97
-20 C (-4 F): Days with min	118	124	1918	69
-30 C (-22 F): Days with min	118	74	1956	32
-40 C (-40 F): Days with min	101	38	1917	5
20 C (68 F): Tropical nights (min	2	2	1913	1
10 mm (0.39 in): Days with 10 mm or more rain	102	16	1990	5
25 mm (0.98 in): Days with 25 mm or more rain	43	5	2021	1
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1930	1
10 cm (3.9 in): Days with 10 cm or more snowfall	60	11	1990	4
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1935	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

Data for University Exp STN 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).

University Exp STN Threshold Days by Year (USC00509641)

Key Facts for University Exp STN Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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