Sterling Threshold Days by Year

19 fixed thresholds counted per year at Sterling (USC00057950): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sterling Thresholds

Sterling: days with a maximum temperature at or above 30 C (86 F) in 95 years, most in 1934 with 107.
Sterling: days with a maximum temperature at or above 90 F (32.2 C) in 95 years, most in 2000 with 85.
Sterling: days with a maximum temperature at or below 0 C (32 F) in 95 years, most in 1978 with 55.
Sterling: days with a maximum temperature at or above 35 C (95 F) in 94 years, most in 2000 with 44.
19 fixed thresholds have at least one qualifying day at Sterling.

Days at or above 30 C (86 F)

95 years with a qualifying day

Days per year at Sterling with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 107 in 1934.

Days at or above 30 C (86 F) per year at Sterling
Year	Days	Decade average
1910	79	59.1
1911	63	59.1
1912	44	59.1
1913	69	59.1
1914	60	59.1
1915	27	59.1
1916	67	59.1
1917	48	59.1
1919	75	59.1
1920	61	53.3
1921	54	53.3
1922	70	53.3
1923	39	53.3
1924	57	53.3
1925	56	53.3
1926	52	53.3
1927	43	53.3
1928	39	53.3
1929	62	53.3
1930	63	81.6
1931	87	81.6
1932	82	81.6
1933	91	81.6
1934	107	81.6
1935	76	81.6
1936	86	81.6
1937	82	81.6
1938	66	81.6
1939	76	81.6
1940	60	56.1
1941	55	56.1
1942	50	56.1
1943	61	56.1
1944	55	56.1
1945	40	56.1
1946	59	56.1
1947	59	56.1
1948	70	56.1
1949	52	56.1
1950	55	69.3
1951	50	69.3
1952	78	69.3
1953	79	69.3
1954	91	69.3
1955	73	69.3
1956	70	69.3
1957	58	69.3
1958	56	69.3
1959	83	69.3
1960	74	63.8
1961	68	63.8
1962	68	63.8
1963	75	63.8
1964	76	63.8
1965	48	63.8
1966	69	63.8
1967	47	63.8
1968	53	63.8
1969	60	63.8
1970	74	68.2
1971	68	68.2
1972	58	68.2
1973	56	68.2
1974	71	68.2
1975	65	68.2
1976	81	68.2
1977	71	68.2
1978	69	68.2
1979	69	68.2
1980	87	76.8
1981	65	76.8
1982	59	76.8
1983	74	76.8
1984	78	76.8
1986	61	76.8
1987	89	76.8
1988	91	76.8
1989	87	76.8
1990	82	77.7
1991	89	77.7
1992	65	77.7
1993	64	77.7
1994	100	77.7
1996	61	77.7
1997	81	77.7
1998	79	77.7
1999	78	77.7
2000	97	77.8
2001	92	77.8
2002	83	77.8
2004	66	77.8
2006	84	77.8
2007	86	77.8
2008	62	77.8
2009	52	77.8

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

First to last qualifying date each year at Sterling
Year	First date	Last date
1910	1910-03-22	1910-10-14
1911	1911-05-09	1911-09-13
1912	1912-05-26	1912-09-07
1913	1913-05-26	1913-09-18
1914	1914-06-10	1914-09-27
1915	1915-05-12	1915-09-24
1916	1916-05-07	1916-10-03
1917	1917-06-10	1917-09-22
1919	1919-06-12	1919-09-26
1920	1920-05-21	1920-10-16
1921	1921-06-11	1921-10-22
1922	1922-06-06	1922-10-06
1923	1923-06-16	1923-09-09
1924	1924-05-04	1924-09-25
1925	1925-05-19	1925-09-16
1926	1926-05-22	1926-10-17
1927	1927-04-26	1927-09-12
1928	1928-05-01	1928-10-09
1929	1929-05-26	1929-10-05
1930	1930-04-08	1930-10-09
1931	1931-05-14	1931-09-29
1932	1932-04-20	1932-10-06
1933	1933-05-18	1933-09-24
1934	1934-04-25	1934-10-15
1935	1935-06-08	1935-09-23
1936	1936-05-03	1936-09-25
1937	1937-05-17	1937-10-03
1938	1938-04-25	1938-09-28
1939	1939-05-19	1939-09-22
1940	1940-05-11	1940-09-08
1941	1941-05-12	1941-09-20
1942	1942-05-25	1942-10-11
1943	1943-05-28	1943-09-13
1944	1944-05-13	1944-09-21
1945	1945-06-13	1945-09-06
1946	1946-06-04	1946-09-26
1947	1947-05-05	1947-10-05
1948	1948-04-29	1948-09-23
1949	1949-04-25	1949-09-26
1950	1950-05-18	1950-11-01
1951	1951-05-29	1951-10-02
1952	1952-05-04	1952-09-28
1953	1953-04-28	1953-10-11
1954	1954-04-24	1954-10-09
1955	1955-04-27	1955-09-18
1956	1956-05-21	1956-09-28
1957	1957-06-05	1957-10-03
1958	1958-05-22	1958-09-24
1959	1959-05-01	1959-09-15
1960	1960-04-22	1960-09-08
1961	1961-05-11	1961-09-19
1962	1962-04-20	1962-09-14
1963	1963-03-29	1963-10-02
1964	1964-05-15	1964-09-26
1965	1965-05-01	1965-10-10
1966	1966-05-05	1966-09-25
1967	1967-05-23	1967-10-04
1968	1968-06-03	1968-09-15
1969	1969-05-26	1969-09-29
1970	1970-05-18	1970-09-21
1971	1971-06-11	1971-09-14
1972	1972-05-17	1972-09-19
1973	1973-05-19	1973-09-24
1974	1974-04-26	1974-10-04
1975	1975-05-17	1975-10-13
1976	1976-05-19	1976-10-02
1977	1977-05-24	1977-09-29
1978	1978-05-15	1978-09-18
1979	1979-05-06	1979-10-14
1980	1980-04-20	1980-10-04
1981	1981-05-03	1981-09-30
1982	1982-05-04	1982-09-28
1983	1983-05-10	1983-10-01
1984	1984-05-13	1984-09-22
1986	1986-05-04	1986-09-17
1987	1987-04-18	1987-10-30
1988	1988-05-13	1988-09-27
1989	1989-04-20	1989-10-15
1990	1990-05-08	1990-10-20
1991	1991-05-10	1991-10-18
1992	1992-04-14	1992-10-22
1993	1993-05-15	1993-10-07
1994	1994-04-18	1994-09-30
1996	1996-05-16	1996-10-13
1997	1997-05-10	1997-10-07
1998	1998-05-13	1998-09-28
1999	1999-05-09	1999-10-14
2000	2000-05-04	2000-10-03
2001	2001-04-18	2001-10-02
2002	2002-04-15	2002-09-16
2004	2004-05-06	2004-09-21
2006	2006-04-14	2006-10-09
2007	2007-04-30	2007-10-08
2008	2008-04-16	2008-09-29
2009	2009-05-13	2009-10-01

Every Fixed Threshold

Fixed thresholds at Sterling
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	95	107	1934	52
35 C (95 F): Days	94	44	2000	9
40 C (104 F): Days	28	6	1990	2
90 F (32.2 C): Days	95	85	2000	31
100 F (37.8 C): Days	70	17	1988	5
110 F (43.3 C): Days	1	1	1990	1
0 C (32 F): Ice days (max	95	55	1978	25
0 C (32 F): Frost days (min	87	204	1913	154
-10 C (14 F): Days with min	87	95	1913	39
-20 C (-4 F): Days with min	85	26	1916	3
-30 C (-22 F): Days with min	16	5	1924	2
20 C (68 F): Tropical nights (min	39	15	1921	2
25 C (77 F): Days with min	2	2	1916	1
10 mm (0.39 in): Days with 10 mm or more rain	90	19	1915	19
25 mm (0.98 in): Days with 25 mm or more rain	79	7	1915	5
50 mm (1.97 in): Days with 50 mm or more rain	20	2	1998	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	9	1931	5
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1931	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Sterling 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Sterling Threshold Days by Year

Key Facts for Sterling Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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