Sheldon Threshold Days by Year (USC00137594)

19 fixed thresholds counted per year at Sheldon (USC00137594): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sheldon Thresholds

Sheldon: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1908 with 43.
Sheldon: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 1951 with 17.
Sheldon: days with a maximum temperature at or above 30 C (86 F) in 100 years, most in 1931 with 78.
Sheldon: days with a maximum temperature at or below 0 C (32 F) in 100 years, most in 1978 with 102.
19 fixed thresholds have at least one qualifying day at Sheldon.

Days at or above 30 C (86 F)

100 years with a qualifying day

Days per year at Sheldon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1931.

Days at or above 30 C (86 F) per year at Sheldon
Year	Days	Decade average
1900	39	45.1
1901	65	45.1
1902	24	45.1
1905	35	45.1
1906	43	45.1
1907	48	45.1
1908	57	45.1
1909	50	45.1
1910	58	58
1926	56	42.5
1927	40	42.5
1928	32	42.5
1929	42	42.5
1930	53	60.5
1931	78	60.5
1932	48	60.5
1933	66	60.5
1934	76	60.5
1935	57	60.5
1936	76	60.5
1937	47	60.5
1938	48	60.5
1939	56	60.5
1940	41	37.1
1941	51	37.1
1942	24	37.1
1943	37	37.1
1944	29	37.1
1945	27	37.1
1946	30	37.1
1947	47	37.1
1948	42	37.1
1949	43	37.1
1950	13	34.3
1951	7	34.3
1952	33	34.3
1953	37	34.3
1954	28	34.3
1955	55	34.3
1956	45	34.3
1957	30	34.3
1958	44	34.3
1959	51	34.3
1960	36	37.5
1961	39	37.5
1962	23	37.5
1963	51	37.5
1964	48	37.5
1965	34	37.5
1966	47	37.5
1967	31	37.5
1968	38	37.5
1969	28	37.5
1970	62	43.4
1971	31	43.4
1972	26	43.4
1975	47	43.4
1976	61	43.4
1977	40	43.4
1978	46	43.4
1979	34	43.4
1980	54	39
1981	29	39
1982	25	39
1983	61	39
1984	31	39
1985	31	39
1986	35	39
1987	42	39
1988	52	39
1989	30	39
1990	37	25.1
1991	34	25.1
1992	4	25.1
1993	12	25.1
1994	20	25.1
1995	36	25.1
1996	8	25.1
1997	30	25.1
1998	38	25.1
1999	32	25.1
2000	39	34.5
2001	36	34.5
2002	51	34.5
2003	32	34.5
2004	24	34.5
2005	42	34.5
2006	47	34.5
2007	55	34.5
2008	9	34.5
2009	10	34.5
2010	36	32.3
2011	42	32.3
2012	69	32.3
2013	31	32.3
2014	10	32.3
2015	15	32.3
2016	27	32.3
2017	34	32.3
2018	27	32.3

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

First to last qualifying date each year at Sheldon
Year	First date	Last date
1900	1900-05-11	1900-09-09
1901	1901-04-26	1901-09-06
1902	1902-05-18	1902-08-18
1905	1905-06-03	1905-10-07
1906	1906-04-24	1906-09-12
1907	1907-05-12	1907-09-19
1908	1908-04-13	1908-10-14
1909	1909-05-05	1909-08-27
1910	1910-03-23	1910-10-16
1926	1926-04-29	1926-09-17
1927	1927-05-17	1927-09-17
1928	1928-05-09	1928-10-10
1929	1929-04-04	1929-09-25
1930	1930-06-02	1930-10-10
1931	1931-04-08	1931-09-20
1932	1932-05-13	1932-10-02
1933	1933-05-18	1933-09-25
1934	1934-04-30	1934-10-12
1935	1935-06-12	1935-09-24
1936	1936-05-05	1936-09-22
1937	1937-06-19	1937-09-22
1938	1938-06-05	1938-10-04
1939	1939-05-04	1939-09-22
1940	1940-05-12	1940-09-22
1941	1941-05-14	1941-09-20
1942	1942-05-29	1942-09-11
1943	1943-05-28	1943-09-05
1944	1944-05-14	1944-09-17
1945	1945-06-22	1945-09-07
1946	1946-06-06	1946-09-05
1947	1947-06-26	1947-10-21
1948	1948-05-20	1948-09-19
1949	1949-04-25	1949-08-26
1950	1950-05-23	1950-10-30
1951	1951-07-15	1951-08-30
1952	1952-05-03	1952-09-13
1953	1953-05-25	1953-10-02
1954	1954-04-14	1954-08-15
1955	1955-05-06	1955-09-18
1956	1956-05-21	1956-10-12
1957	1957-06-05	1957-09-01
1958	1958-05-11	1958-10-15
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-09-07
1961	1961-06-09	1961-09-10
1962	1962-04-25	1962-09-12
1963	1963-05-07	1963-10-06
1964	1964-04-16	1964-09-09
1965	1965-04-29	1965-08-18
1966	1966-05-04	1966-10-08
1967	1967-04-30	1967-09-25
1968	1968-04-30	1968-08-23
1969	1969-05-15	1969-08-30
1970	1970-04-28	1970-09-20
1971	1971-06-03	1971-09-07
1972	1972-05-17	1972-09-19
1975	1975-05-17	1975-10-13
1976	1976-05-19	1976-10-01
1977	1977-04-09	1977-09-08
1978	1978-05-25	1978-09-11
1979	1979-05-17	1979-09-04
1980	1980-04-20	1980-10-07
1981	1981-04-25	1981-09-29
1982	1982-06-23	1982-08-20
1983	1983-05-27	1983-09-27
1984	1984-06-22	1984-09-19
1985	1985-04-17	1985-09-07
1986	1986-05-31	1986-08-25
1987	1987-04-19	1987-09-26
1988	1988-04-08	1988-09-17
1989	1989-05-23	1989-08-31
1990	1990-04-22	1990-10-05
1991	1991-04-05	1991-09-06
1992	1992-04-30	1992-06-13
1993	1993-06-16	1993-08-26
1994	1994-04-18	1994-09-15
1995	1995-06-14	1995-08-28
1996	1996-05-17	1996-08-07
1997	1997-06-19	1997-10-06
1998	1998-05-12	1998-09-20
1999	1999-06-06	1999-09-04
2000	2000-05-05	2000-10-01
2001	2001-05-10	2001-10-03
2002	2002-04-16	2002-10-01
2003	2003-06-15	2003-10-20
2004	2004-04-17	2004-09-20
2005	2005-06-07	2005-10-05
2006	2006-04-14	2006-10-04
2007	2007-04-22	2007-10-07
2008	2008-05-26	2008-08-03
2009	2009-05-20	2009-08-15
2010	2010-05-23	2010-10-09
2011	2011-05-10	2011-10-05
2012	2012-04-02	2012-09-12
2013	2013-05-15	2013-09-10
2014	2014-05-08	2014-08-22
2015	2015-06-10	2015-09-17
2016	2016-05-07	2016-09-24
2017	2017-05-09	2017-09-25
2018	2018-05-24	2018-09-18

Every Fixed Threshold

Fixed thresholds at Sheldon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	100	78	1931	27
35 C (95 F): Days	74	35	1936	2
40 C (104 F): Days	5	5	1936	5
90 F (32.2 C): Days	99	60	1936	14
100 F (37.8 C): Days	21	20	1936	2
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	100	102	1978	79
0 C (32 F): Frost days (min	100	199	2013	189
-10 C (14 F): Days with min	100	94	1989	82
-20 C (-4 F): Days with min	100	43	1936	25
-30 C (-22 F): Days with min	62	11	1936	2
20 C (68 F): Tropical nights (min	99	29	1936	14
25 C (77 F): Days with min	4	4	1909	1
10 mm (0.39 in): Days with 10 mm or more rain	109	43	1908	19
25 mm (0.98 in): Days with 25 mm or more rain	109	17	1951	5
50 mm (1.97 in): Days with 50 mm or more rain	73	5	1906	3
100 mm (3.94 in): Days with 100 mm or more rain	8	2	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	88	7	2018	2
25 cm (9.8 in): Days with 25 cm or more snowfall	13	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

Data for Sheldon 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).

Sheldon Threshold Days by Year (USC00137594)

Key Facts for Sheldon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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