Roosevelt 1 S Threshold Days by Year (USC00027281)

16 fixed thresholds counted per year at Roosevelt 1 S (USC00027281): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roosevelt 1 S Thresholds

Roosevelt 1 S: days with 10 mm (0.39 in) or more of precipitation in 111 years, most in 1978 with 28.
Roosevelt 1 S: days with 25 mm (0.98 in) or more of precipitation in 104 years, most in 1978 with 12.
Roosevelt 1 S: days with a maximum temperature at or above 30 C (86 F) in 103 years, most in 1950 with 186.
Roosevelt 1 S: days with a maximum temperature at or above 35 C (95 F) in 103 years, most in 1997 with 141.
16 fixed thresholds have at least one qualifying day at Roosevelt 1 S.

Days at or above 30 C (86 F)

103 years with a qualifying day

Days per year at Roosevelt 1 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 186 in 1950.

Days at or above 30 C (86 F) per year at Roosevelt 1 S
Year	Days	Decade average
1908	161	166
1909	171	166
1911	165	147
1912	139	147
1913	137	147
1915	152	147
1916	145	147
1917	144	147
1921	132	156.1
1922	159	156.1
1923	144	156.1
1924	170	156.1
1926	157	156.1
1927	162	156.1
1928	167	156.1
1929	158	156.1
1930	163	163.7
1931	162	163.7
1932	162	163.7
1933	146	163.7
1934	183	163.7
1935	148	163.7
1936	174	163.7
1937	174	163.7
1938	167	163.7
1939	158	163.7
1940	175	162.8
1941	139	162.8
1942	156	162.8
1943	179	162.8
1944	149	162.8
1945	166	162.8
1946	165	162.8
1947	164	162.8
1948	172	162.8
1949	163	162.8
1950	186	165.3
1951	156	165.3
1952	178	165.3
1953	146	165.3
1954	182	165.3
1955	157	165.3
1956	172	165.3
1957	142	165.3
1958	158	165.3
1959	176	165.3
1960	169	160
1961	169	160
1962	155	160
1963	166	160
1964	160	160
1965	163	160
1966	159	160
1967	157	160
1968	143	160
1969	159	160
1970	141	156.6
1971	145	156.6
1972	177	156.6
1974	155	156.6
1976	152	156.6
1977	163	156.6
1978	161	156.6
1979	159	156.6
1980	154	159.3
1981	162	159.3
1982	143	159.3
1983	139	159.3
1984	160	159.3
1985	153	159.3
1986	153	159.3
1987	173	159.3
1988	173	159.3
1989	183	159.3
1990	172	162.6
1991	163	162.6
1992	155	162.6
1994	159	162.6
1996	146	162.6
1997	181	162.6
1998	156	162.6
1999	169	162.6
2000	172	170.8
2001	177	170.8
2002	178	170.8
2003	170	170.8
2004	177	170.8
2005	167	170.8
2006	162	170.8
2007	174	170.8
2008	164	170.8
2009	167	170.8
2010	152	156.5
2011	157	156.5
2012	171	156.5
2014	145	156.5
2015	152	156.5
2016	162	156.5
2020	162	151
2021	154	151
2022	168	151
2023	149	151
2026	122	151

For each year, a bar from the first to the last day at Roosevelt 1 S meeting 30 C (86 F).

First to last qualifying date each year at Roosevelt 1 S
Year	First date	Last date
1908	1908-04-13	1908-10-15
1909	1909-04-14	1909-10-25
1911	1911-04-19	1911-10-15
1912	1912-05-03	1912-10-26
1913	1913-04-05	1913-10-24
1915	1915-05-11	1915-11-05
1916	1916-03-11	1916-10-10
1917	1917-03-29	1917-10-15
1921	1921-03-17	1921-10-16
1922	1922-04-23	1922-10-13
1923	1923-04-16	1923-10-19
1924	1924-04-21	1924-11-08
1926	1926-04-27	1926-10-28
1927	1927-04-24	1927-11-10
1928	1928-03-24	1928-10-31
1929	1929-04-04	1929-10-24
1930	1930-04-06	1930-10-28
1931	1931-03-24	1931-10-19
1932	1932-04-03	1932-10-18
1933	1933-04-04	1933-10-28
1934	1934-03-15	1934-10-30
1935	1935-04-22	1935-10-16
1936	1936-04-13	1936-10-17
1937	1937-04-15	1937-11-01
1938	1938-04-14	1938-11-01
1939	1939-03-19	1939-11-12
1940	1940-04-12	1940-10-26
1941	1941-05-09	1941-10-12
1942	1942-04-03	1942-10-13
1943	1943-03-30	1943-10-28
1944	1944-05-07	1944-10-25
1945	1945-04-20	1945-11-06
1946	1946-03-29	1946-10-24
1947	1947-04-16	1947-11-02
1948	1948-04-15	1948-10-22
1949	1949-04-15	1949-10-15
1950	1950-03-30	1950-11-23
1951	1951-02-12	1951-10-20
1952	1952-04-05	1952-10-29
1953	1953-03-28	1953-11-12
1954	1954-04-09	1954-10-23
1955	1955-04-29	1955-10-21
1956	1956-03-25	1956-10-23
1957	1957-04-14	1957-10-11
1958	1958-04-16	1958-10-19
1959	1959-04-02	1959-10-29
1960	1960-03-26	1960-10-31
1961	1961-04-04	1961-10-23
1962	1962-04-13	1962-10-30
1963	1963-04-13	1963-10-16
1964	1964-03-31	1964-10-31
1965	1965-04-20	1965-11-06
1966	1966-03-15	1966-10-27
1967	1967-03-23	1967-10-26
1968	1968-04-30	1968-10-29
1969	1969-03-21	1969-10-17
1970	1970-04-11	1970-10-07
1971	1971-03-27	1971-10-15
1972	1972-03-06	1972-10-17
1974	1974-04-09	1974-10-20
1976	1976-04-12	1976-10-17
1977	1977-04-07	1977-10-27
1978	1978-04-25	1978-10-20
1979	1979-04-15	1979-10-17
1980	1980-04-16	1980-10-13
1981	1981-04-11	1981-10-11
1982	1982-04-28	1982-10-19
1983	1983-05-08	1983-11-05
1984	1984-04-06	1984-10-11
1985	1985-04-08	1985-10-07
1986	1986-03-07	1986-10-11
1987	1987-04-11	1987-10-23
1988	1988-03-26	1988-11-01
1989	1989-03-10	1989-10-18
1990	1990-03-22	1990-10-29
1991	1991-04-04	1991-10-20
1992	1992-04-12	1992-10-22
1994	1994-04-13	1994-10-13
1996	1996-04-01	1996-10-19
1997	1997-03-18	1997-10-18
1998	1998-03-24	1998-10-19
1999	1999-03-29	1999-10-27
2000	2000-04-03	2000-10-07
2001	2001-04-16	2001-11-04
2002	2002-03-21	2002-10-16
2003	2003-04-01	2003-10-25
2004	2004-03-17	2004-10-15
2005	2005-04-07	2005-10-17
2006	2006-04-08	2006-10-07
2007	2007-03-12	2007-10-30
2008	2008-04-13	2008-10-26
2009	2009-04-07	2009-11-09
2010	2010-04-16	2010-10-17
2011	2011-04-01	2011-10-26
2012	2012-03-29	2012-10-21
2014	2014-04-09	2014-10-27
2015	2015-03-28	2015-10-17
2016	2016-03-20	2016-10-31
2020	2020-04-24	2020-11-08
2021	2021-04-03	2021-10-09
2022	2022-03-26	2022-10-15
2023	2023-04-11	2023-10-23
2026	2026-03-16	2026-09-28

Every Fixed Threshold

Fixed thresholds at Roosevelt 1 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	103	186	1950	122
35 C (95 F): Days	103	141	1997	83
40 C (104 F): Days	103	71	2002	33
45 C (113 F): Days	30	5	1994	4
90 F (32.2 C): Days	103	166	1954	103
100 F (37.8 C): Days	103	103	2000	61
110 F (43.3 C): Days	88	14	2003	2
0 C (32 F): Ice days (max	2	2	1924	1
0 C (32 F): Frost days (min	89	84	2023	2
20 C (68 F): Tropical nights (min	101	126	2000	63
25 C (77 F): Days with min	101	63	2015	30
10 mm (0.39 in): Days with 10 mm or more rain	111	28	1978	10
25 mm (0.98 in): Days with 25 mm or more rain	104	12	1978	3
50 mm (1.97 in): Days with 50 mm or more rain	29	4	1931	2
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1959	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	2006	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

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Data for Roosevelt 1 S 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Roosevelt 1 S Threshold Days by Year (USC00027281)

Key Facts for Roosevelt 1 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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