Dubois Exp STN Threshold Days by Year

15 fixed thresholds counted per year at Dubois Exp STN (USC00102707): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dubois Exp STN Thresholds

Dubois Exp STN: days with a maximum temperature at or above 30 C (86 F) in 102 years, most in 2022 with 70.
Dubois Exp STN: days with a maximum temperature at or below 0 C (32 F) in 102 years, most in 1952 with 113.
Dubois Exp STN: nights with a minimum temperature at or below 0 C (32 F) in 102 years, most in 1929 with 262.
Dubois Exp STN: nights with a minimum temperature at or below -10 C (14 F) in 102 years, most in 1929 with 129.
15 fixed thresholds have at least one qualifying day at Dubois Exp STN.

Days at or above 30 C (86 F)

102 years with a qualifying day

Days per year at Dubois Exp STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 2022.

Days at or above 30 C (86 F) per year at Dubois Exp STN
Year	Days	Decade average
1925	33	41
1926	35	41
1927	41	41
1928	39	41
1929	57	41
1930	48	41.6
1931	57	41.6
1932	38	41.6
1933	50	41.6
1934	50	41.6
1935	34	41.6
1936	44	41.6
1937	44	41.6
1938	14	41.6
1939	37	41.6
1940	50	32.3
1941	20	32.3
1942	43	32.3
1943	31	32.3
1944	13	32.3
1945	27	32.3
1946	37	32.3
1947	42	32.3
1948	31	32.3
1949	29	32.3
1950	19	34.5
1951	23	34.5
1952	24	34.5
1953	43	34.5
1954	41	34.5
1955	42	34.5
1956	35	34.5
1957	41	34.5
1958	35	34.5
1959	42	34.5
1960	41	31.7
1961	42	31.7
1962	14	31.7
1963	28	31.7
1964	26	31.7
1965	11	31.7
1966	42	31.7
1967	38	31.7
1968	31	31.7
1969	44	31.7
1970	38	33.1
1971	38	33.1
1972	23	33.1
1973	30	33.1
1974	45	33.1
1975	27	33.1
1976	28	33.1
1977	37	33.1
1978	27	33.1
1979	38	33.1
1980	19	35.5
1981	61	35.5
1982	37	35.5
1983	21	35.5
1984	17	35.5
1985	39	35.5
1986	34	35.5
1987	27	35.5
1988	69	35.5
1989	31	35.5
1990	48	34.1
1991	41	34.1
1992	29	34.1
1993	2	34.1
1994	55	34.1
1995	24	34.1
1996	38	34.1
1997	26	34.1
1998	45	34.1
1999	33	34.1
2000	54	45.8
2001	60	45.8
2002	50	45.8
2003	67	45.8
2004	36	45.8
2005	40	45.8
2006	36	45.8
2007	57	45.8
2008	37	45.8
2009	21	45.8
2010	35	45.3
2011	33	45.3
2012	58	45.3
2013	69	45.3
2014	32	45.3
2015	37	45.3
2016	50	45.3
2017	46	45.3
2018	47	45.3
2019	46	45.3
2020	51	57.4
2021	65	57.4
2022	70	57.4
2023	38	57.4
2024	60	57.4
2025	63	57.4
2026	55	57.4

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

First to last qualifying date each year at Dubois Exp STN
Year	First date	Last date
1925	1925-06-23	1925-09-02
1926	1926-06-04	1926-08-26
1927	1927-05-16	1927-09-03
1928	1928-06-25	1928-09-08
1929	1929-06-25	1929-09-01
1930	1930-06-07	1930-09-03
1931	1931-06-14	1931-09-07
1932	1932-06-22	1932-09-17
1933	1933-06-12	1933-09-05
1934	1934-05-24	1934-09-06
1935	1935-06-12	1935-09-11
1936	1936-05-19	1936-08-23
1937	1937-06-21	1937-09-19
1938	1938-07-10	1938-08-21
1939	1939-06-13	1939-08-27
1940	1940-06-12	1940-08-31
1941	1941-06-22	1941-08-08
1942	1942-07-04	1942-09-04
1943	1943-07-06	1943-09-13
1944	1944-07-16	1944-09-07
1945	1945-07-13	1945-09-01
1946	1946-07-01	1946-09-14
1947	1947-07-02	1947-09-05
1948	1948-07-09	1948-09-14
1949	1949-07-01	1949-09-01
1950	1950-07-01	1950-09-07
1951	1951-07-03	1951-08-18
1952	1952-06-09	1952-09-03
1953	1953-07-04	1953-09-13
1954	1954-05-19	1954-09-01
1955	1955-06-21	1955-09-08
1956	1956-06-09	1956-09-19
1957	1957-06-29	1957-09-07
1958	1958-06-27	1958-09-07
1959	1959-06-12	1959-09-12
1960	1960-06-24	1960-08-31
1961	1961-06-16	1961-08-23
1962	1962-06-25	1962-08-26
1963	1963-07-02	1963-09-12
1964	1964-07-08	1964-08-18
1965	1965-07-15	1965-08-17
1966	1966-06-19	1966-09-09
1967	1967-07-11	1967-09-06
1968	1968-06-19	1968-08-08
1969	1969-06-05	1969-09-03
1970	1970-06-24	1970-08-27
1971	1971-06-21	1971-08-28
1972	1972-05-31	1972-08-18
1973	1973-06-09	1973-08-21
1974	1974-06-13	1974-09-04
1975	1975-07-02	1975-08-12
1976	1976-06-29	1976-09-06
1977	1977-06-05	1977-09-08
1978	1978-07-01	1978-09-04
1979	1979-06-11	1979-09-18
1980	1980-07-17	1980-09-06
1981	1981-06-25	1981-09-19
1982	1982-06-30	1982-09-09
1983	1983-07-06	1983-09-02
1984	1984-06-29	1984-08-11
1985	1985-06-07	1985-08-30
1986	1986-05-28	1986-08-29
1987	1987-06-13	1987-09-24
1988	1988-06-04	1988-09-10
1989	1989-06-15	1989-08-13
1990	1990-06-23	1990-09-15
1991	1991-07-03	1991-09-06
1992	1992-06-22	1992-08-21
1993	1993-08-06	1993-08-19
1994	1994-06-19	1994-09-08
1995	1995-07-08	1995-09-03
1996	1996-06-08	1996-09-10
1997	1997-07-09	1997-09-10
1998	1998-07-02	1998-09-06
1999	1999-06-21	1999-08-27
2000	2000-06-05	2000-09-16
2001	2001-05-24	2001-09-25
2002	2002-05-30	2002-09-04
2003	2003-05-28	2003-09-05
2004	2004-06-05	2004-09-11
2005	2005-06-20	2005-09-07
2006	2006-06-07	2006-09-04
2007	2007-06-16	2007-09-03
2008	2008-06-21	2008-08-30
2009	2009-07-12	2009-09-03
2010	2010-06-28	2010-09-05
2011	2011-06-28	2011-08-30
2012	2012-06-04	2012-08-29
2013	2013-05-13	2013-09-11
2014	2014-07-02	2014-08-18
2015	2015-06-09	2015-09-25
2016	2016-06-05	2016-09-01
2017	2017-06-04	2017-09-06
2018	2018-06-13	2018-09-08
2019	2019-07-01	2019-09-06
2020	2020-05-29	2020-09-07
2021	2021-06-02	2021-09-10
2022	2022-06-17	2022-09-08
2023	2023-07-01	2023-08-30
2024	2024-06-06	2024-09-10
2025	2025-05-31	2025-09-04
2026	2026-06-16	2026-08-28

Every Fixed Threshold

Fixed thresholds at Dubois Exp STN
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	102	70	2022	55
35 C (95 F): Days	63	24	2003	19
90 F (32.2 C): Days	100	50	2022	42
100 F (37.8 C): Days	9	6	2003	3
0 C (32 F): Ice days (max	102	113	1952	14
0 C (32 F): Frost days (min	102	262	1929	78
-10 C (14 F): Days with min	102	129	1929	8
-20 C (-4 F): Days with min	94	33	1929	4
-30 C (-22 F): Days with min	14	3	1990	3
20 C (68 F): Tropical nights (min	7	1	1931	2
10 mm (0.39 in): Days with 10 mm or more rain	97	16	1995	1
25 mm (0.98 in): Days with 25 mm or more rain	37	5	1995	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1925	1
10 cm (3.9 in): Days with 10 cm or more snowfall	84	8	1949	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	3	1959	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1925.

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Data for Dubois 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).

Dubois Exp STN Threshold Days by Year

Key Facts for Dubois Exp STN Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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