Longmont 2 ESE Threshold Days by Year (USC00055116)

18 fixed thresholds counted per year at Longmont 2 ESE (USC00055116): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Longmont 2 ESE Thresholds

Longmont 2 ESE: days with a maximum temperature at or above 30 C (86 F) in 105 years, most in 2000 with 92.
Longmont 2 ESE: days with a maximum temperature at or above 90 F (32.2 C) in 105 years, most in 2000 with 75.
Longmont 2 ESE: days with a maximum temperature at or below 0 C (32 F) in 105 years, most in 1978 with 43.
Longmont 2 ESE: days with a maximum temperature at or above 35 C (95 F) in 104 years, most in 2002 with 36.
18 fixed thresholds have at least one qualifying day at Longmont 2 ESE.

Days at or above 30 C (86 F)

105 years with a qualifying day

Days per year at Longmont 2 ESE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2000.

Days at or above 30 C (86 F) per year at Longmont 2 ESE
Year	Days	Decade average
1895	60	69
1896	78	69
1911	69	54.8
1912	36	54.8
1913	66	54.8
1914	57	54.8
1915	28	54.8
1916	55	54.8
1917	47	54.8
1918	53	54.8
1919	82	54.8
1920	55	64
1921	59	64
1922	86	64
1923	49	64
1924	69	64
1925	72	64
1926	82	64
1927	50	64
1928	48	64
1929	70	64
1930	50	70.6
1931	85	70.6
1932	69	70.6
1933	63	70.6
1934	83	70.6
1935	66	70.6
1936	85	70.6
1937	75	70.6
1938	51	70.6
1939	79	70.6
1940	60	58.7
1941	44	58.7
1942	49	58.7
1943	66	58.7
1944	68	58.7
1945	44	58.7
1946	61	58.7
1947	65	58.7
1948	68	58.7
1949	62	58.7
1950	57	67.6
1951	47	67.6
1952	72	67.6
1953	74	67.6
1954	85	67.6
1955	76	67.6
1956	79	67.6
1957	57	67.6
1958	60	67.6
1959	69	67.6
1960	65	58.7
1961	54	58.7
1962	61	58.7
1963	69	58.7
1964	71	58.7
1965	35	58.7
1966	66	58.7
1967	45	58.7
1968	57	58.7
1969	64	58.7
1970	72	66.2
1971	63	66.2
1972	54	66.2
1973	58	66.2
1974	65	66.2
1975	63	66.2
1976	67	66.2
1977	71	66.2
1978	78	66.2
1979	71	66.2
1980	82	67
1981	72	67
1982	55	67
1983	78	67
1984	68	67
1985	53	67
1986	56	67
1987	66	67
1988	74	67
1989	66	67
1990	65	67.7
1991	59	67.7
1992	54	67.7
1993	57	67.7
1994	90	67.7
1995	63	67.7
1996	73	67.7
1997	67	67.7
1998	81	67.7
1999	68	67.7
2000	92	77.8
2001	83	77.8
2002	85	77.8
2003	74	77.8
2004	55	77.8
2018	74	70.5
2019	67	70.5
2020	87	78.7
2021	81	78.7
2022	83	78.7
2023	52	78.7
2024	85	78.7
2025	69	78.7
2026	94	78.7

For each year, a bar from the first to the last day at Longmont 2 ESE meeting 30 C (86 F).

First to last qualifying date each year at Longmont 2 ESE
Year	First date	Last date
1895	1895-05-08	1895-09-27
1896	1896-05-05	1896-09-15
1911	1911-05-08	1911-09-20
1912	1912-05-20	1912-09-04
1913	1913-05-27	1913-09-17
1914	1914-05-10	1914-09-19
1915	1915-05-13	1915-10-09
1916	1916-05-06	1916-09-08
1917	1917-06-09	1917-09-23
1918	1918-05-08	1918-09-20
1919	1919-06-07	1919-09-26
1920	1920-05-25	1920-09-24
1921	1921-06-10	1921-10-18
1922	1922-05-17	1922-10-04
1923	1923-05-26	1923-09-23
1924	1924-05-18	1924-09-23
1925	1925-04-17	1925-10-03
1926	1926-05-22	1926-10-25
1927	1927-04-26	1927-09-16
1928	1928-05-08	1928-10-07
1929	1929-05-25	1929-10-05
1930	1930-05-21	1930-09-18
1931	1931-05-14	1931-09-29
1932	1932-05-13	1932-09-18
1933	1933-05-31	1933-09-29
1934	1934-05-07	1934-10-07
1935	1935-06-08	1935-09-23
1936	1936-05-04	1936-09-25
1937	1937-05-14	1937-09-22
1938	1938-05-28	1938-09-30
1939	1939-05-19	1939-09-27
1940	1940-05-03	1940-09-08
1941	1941-05-12	1941-09-20
1942	1942-05-26	1942-09-30
1943	1943-05-01	1943-09-18
1944	1944-05-13	1944-09-22
1945	1945-05-26	1945-09-11
1946	1946-06-04	1946-09-26
1947	1947-05-03	1947-10-05
1948	1948-05-14	1948-09-18
1949	1949-04-24	1949-10-06
1950	1950-05-23	1950-10-15
1951	1951-05-29	1951-09-27
1952	1952-06-07	1952-09-28
1953	1953-05-22	1953-10-02
1954	1954-05-20	1954-10-09
1955	1955-05-07	1955-09-17
1956	1956-05-09	1956-10-08
1957	1957-06-05	1957-09-29
1958	1958-05-22	1958-09-24
1959	1959-06-06	1959-09-15
1960	1960-04-22	1960-09-07
1961	1961-05-12	1961-09-18
1962	1962-05-07	1962-10-11
1963	1963-05-07	1963-10-06
1964	1964-05-15	1964-10-02
1965	1965-06-20	1965-09-16
1966	1966-05-06	1966-09-30
1967	1967-05-23	1967-10-04
1968	1968-05-31	1968-09-15
1969	1969-05-26	1969-09-30
1970	1970-05-18	1970-09-21
1971	1971-05-17	1971-09-14
1972	1972-05-17	1972-09-19
1973	1973-05-19	1973-09-08
1974	1974-05-09	1974-09-27
1975	1975-05-17	1975-10-13
1976	1976-05-15	1976-09-12
1977	1977-05-24	1977-09-29
1978	1978-05-15	1978-10-02
1979	1979-05-28	1979-10-09
1980	1980-05-28	1980-10-05
1981	1981-04-26	1981-09-30
1982	1982-05-28	1982-09-23
1983	1983-05-27	1983-09-28
1984	1984-05-11	1984-09-20
1985	1985-05-28	1985-09-17
1986	1986-05-04	1986-08-31
1987	1987-05-10	1987-09-27
1988	1988-05-14	1988-09-11
1989	1989-04-22	1989-10-01
1990	1990-05-18	1990-10-06
1991	1991-05-11	1991-10-18
1992	1992-05-01	1992-10-03
1993	1993-05-27	1993-10-07
1994	1994-05-17	1994-09-30
1995	1995-06-13	1995-10-16
1996	1996-04-25	1996-10-12
1997	1997-05-18	1997-10-06
1998	1998-05-14	1998-09-29
1999	1999-05-20	1999-10-13
2000	2000-05-05	2000-10-02
2001	2001-05-02	2001-10-03
2002	2002-05-07	2002-09-25
2003	2003-05-18	2003-10-23
2004	2004-05-06	2004-09-20
2018	2018-05-11	2018-10-04
2019	2019-05-16	2019-09-21
2020	2020-05-02	2020-09-25
2021	2021-05-02	2021-09-28
2022	2022-04-23	2022-09-21
2023	2023-06-20	2023-10-02
2024	2024-06-02	2024-10-06
2025	2025-04-12	2025-10-04
2026	2026-03-20	2026-10-10

Every Fixed Threshold

Fixed thresholds at Longmont 2 ESE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	105	92	2000	94
35 C (95 F): Days	104	36	2002	27
40 C (104 F): Days	12	3	1954	2
90 F (32.2 C): Days	105	75	2000	65
100 F (37.8 C): Days	62	13	2003	6
0 C (32 F): Ice days (max	105	43	1978	4
0 C (32 F): Frost days (min	104	201	1999	66
-10 C (14 F): Days with min	104	76	1988	11
-20 C (-4 F): Days with min	101	24	1924	1
-30 C (-22 F): Days with min	29	6	1989	1
20 C (68 F): Tropical nights (min	10	2	2003	5
10 mm (0.39 in): Days with 10 mm or more rain	102	18	1915	6
25 mm (0.98 in): Days with 25 mm or more rain	88	7	1983	2
50 mm (1.97 in): Days with 50 mm or more rain	22	1	1895	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1896	1
10 cm (3.9 in): Days with 10 cm or more snowfall	75	7	1971	1
25 cm (9.8 in): Days with 25 cm or more snowfall	17	2	1979	2
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

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Data for Longmont 2 ESE 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).

Longmont 2 ESE Threshold Days by Year (USC00055116)

Key Facts for Longmont 2 ESE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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