Glenn Dale Bell STN Threshold Days by Year (USC00183675)

18 fixed thresholds counted per year at Glenn Dale Bell STN (USC00183675): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glenn Dale Bell STN Thresholds

Glenn Dale Bell STN: nights with a minimum temperature at or below 0 C (32 F) in 84 years, most in 1943 with 141.
Glenn Dale Bell STN: nights with a minimum temperature at or below -10 C (14 F) in 84 years, most in 1958 with 32.
Glenn Dale Bell STN: nights with a minimum temperature at or above 20 C (68 F) in 84 years, most in 1995 with 51.
Glenn Dale Bell STN: days with a maximum temperature at or above 30 C (86 F) in 82 years, most in 1930 with 104.
18 fixed thresholds have at least one qualifying day at Glenn Dale Bell STN.

Days at or above 30 C (86 F)

82 years with a qualifying day

Days per year at Glenn Dale Bell STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 104 in 1930.

Days at or above 30 C (86 F) per year at Glenn Dale Bell STN
Year	Days	Decade average
1921	78	60.6
1922	49	60.6
1923	55	60.6
1924	47	60.6
1925	87	60.6
1926	68	60.6
1927	42	60.6
1928	50	60.6
1929	69	60.6
1930	104	72.6
1931	74	72.6
1932	73	72.6
1933	72	72.6
1934	72	72.6
1935	54	72.6
1936	71	72.6
1937	66	72.6
1938	63	72.6
1939	77	72.6
1940	50	70.8
1941	83	70.8
1942	73	70.8
1943	90	70.8
1944	83	70.8
1945	73	70.8
1946	52	70.8
1947	72	70.8
1948	62	70.8
1949	70	70.8
1950	53	75.4
1951	76	75.4
1952	67	75.4
1953	74	75.4
1954	90	75.4
1955	70	75.4
1956	72	75.4
1957	95	75.4
1958	65	75.4
1959	92	75.4
1960	72	72.8
1961	78	72.8
1962	75	72.8
1963	71	72.8
1964	82	72.8
1965	78	72.8
1966	85	72.8
1967	49	72.8
1968	65	72.8
1969	73	72.8
1970	83	64.2
1971	57	64.2
1972	50	64.2
1973	61	64.2
1974	64	64.2
1975	61	64.2
1976	73	64.2
1977	80	64.2
1978	67	64.2
1979	46	64.2
1980	86	68
1981	59	68
1982	60	68
1983	83	68
1984	56	68
1985	63	68
1986	76	68
1987	76	68
1989	53	68
1990	61	71
1991	92	71
1992	38	71
1993	72	71
1994	89	71
1995	88	71
1996	63	71
1999	65	71
2000	46	60.8
2001	53	60.8
2002	77	60.8
2003	52	60.8
2004	63	60.8
2005	74	60.8

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

First to last qualifying date each year at Glenn Dale Bell STN
Year	First date	Last date
1921	1921-03-21	1921-09-29
1922	1922-04-09	1922-10-06
1923	1923-05-27	1923-09-12
1924	1924-05-06	1924-09-13
1925	1925-04-23	1925-09-21
1926	1926-04-22	1926-10-05
1927	1927-04-20	1927-10-02
1928	1928-05-04	1928-09-17
1929	1929-04-06	1929-09-29
1930	1930-04-11	1930-10-17
1931	1931-05-28	1931-10-08
1932	1932-05-07	1932-09-23
1933	1933-05-13	1933-09-27
1934	1934-05-05	1934-09-27
1935	1935-04-27	1935-09-21
1936	1936-04-21	1936-09-23
1937	1937-04-18	1937-09-25
1938	1938-04-20	1938-10-17
1939	1939-04-25	1939-10-10
1940	1940-05-07	1940-09-21
1941	1941-04-14	1941-10-08
1942	1942-04-06	1942-09-19
1943	1943-05-06	1943-09-16
1944	1944-05-04	1944-10-07
1945	1945-03-16	1945-09-30
1946	1946-04-23	1946-09-17
1947	1947-05-13	1947-10-23
1948	1948-03-21	1948-09-21
1949	1949-05-04	1949-10-11
1950	1950-05-06	1950-11-01
1951	1951-04-29	1951-10-06
1952	1952-04-22	1952-09-15
1953	1953-04-25	1953-09-30
1954	1954-04-19	1954-10-14
1955	1955-05-05	1955-09-20
1956	1956-04-28	1956-09-24
1957	1957-04-21	1957-09-22
1958	1958-05-04	1958-10-10
1959	1959-04-08	1959-10-07
1960	1960-04-14	1960-09-10
1961	1961-04-25	1961-09-26
1962	1962-04-25	1962-10-13
1963	1963-03-30	1963-09-21
1964	1964-04-17	1964-09-23
1965	1965-05-03	1965-09-24
1966	1966-05-06	1966-09-12
1967	1967-04-02	1967-10-06
1968	1968-06-06	1968-09-26
1969	1969-04-27	1969-09-18
1970	1970-05-09	1970-09-27
1971	1971-05-19	1971-09-16
1972	1972-04-19	1972-09-27
1973	1973-06-04	1973-09-29
1974	1974-04-29	1974-09-14
1975	1975-05-20	1975-10-15
1976	1976-04-16	1976-09-15
1977	1977-04-11	1977-09-20
1978	1978-04-01	1978-09-19
1979	1979-05-09	1979-09-07
1980	1980-05-05	1980-09-23
1981	1981-04-28	1981-09-15
1982	1982-05-12	1982-09-16
1983	1983-04-28	1983-09-21
1984	1984-05-19	1984-09-25
1985	1985-04-19	1985-09-20
1986	1986-03-30	1986-10-02
1987	1987-05-10	1987-09-18
1989	1989-05-26	1989-10-16
1990	1990-03-12	1990-10-09
1991	1991-04-08	1991-10-04
1992	1992-05-02	1992-09-23
1993	1993-05-12	1993-09-16
1994	1994-04-15	1994-09-18
1995	1995-04-19	1995-10-06
1996	1996-04-22	1996-09-10
1999	1999-05-12	1999-09-14
2000	2000-05-05	2000-10-04
2001	2001-04-09	2001-09-05
2002	2002-04-16	2002-10-06
2003	2003-04-16	2003-09-02
2004	2004-04-19	2004-09-24
2005	2005-04-07	2005-09-23

Every Fixed Threshold

Fixed thresholds at Glenn Dale Bell STN
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	82	104	1930	74
35 C (95 F): Days	73	41	1930	6
40 C (104 F): Days	2	2	1930	1
90 F (32.2 C): Days	82	76	1930	29
100 F (37.8 C): Days	21	16	1930	2
0 C (32 F): Ice days (max	77	23	1936	14
0 C (32 F): Frost days (min	84	141	1943	115
-10 C (14 F): Days with min	84	32	1958	19
-20 C (-4 F): Days with min	28	7	1934	1
-30 C (-22 F): Days with min	1	1	1935	1
20 C (68 F): Tropical nights (min	84	51	1995	44
25 C (77 F): Days with min	9	3	1993	1
10 mm (0.39 in): Days with 10 mm or more rain	82	52	1948	36
25 mm (0.98 in): Days with 25 mm or more rain	82	20	2003	16
50 mm (1.97 in): Days with 50 mm or more rain	72	7	1942	4
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1942	2
10 cm (3.9 in): Days with 10 cm or more snowfall	42	5	1966	1
25 cm (9.8 in): Days with 25 cm or more snowfall	7	4	1987	4

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

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Data for Glenn Dale Bell 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

Glenn Dale Bell STN Threshold Days by Year (USC00183675)

Key Facts for Glenn Dale Bell STN Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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