Beltsville Threshold Days by Year (USC00180700)

18 fixed thresholds counted per year at Beltsville (USC00180700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Beltsville Thresholds

Beltsville: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 1998 with 83.
Beltsville: days with a maximum temperature at or above 90 F (32.2 C) in 77 years, most in 1988 with 53.
Beltsville: nights with a minimum temperature at or below 0 C (32 F) in 77 years, most in 1960 with 138.
Beltsville: nights with a minimum temperature at or above 20 C (68 F) in 77 years, most in 2018 with 80.
18 fixed thresholds have at least one qualifying day at Beltsville.

Days at or above 30 C (86 F)

77 years with a qualifying day

Days per year at Beltsville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 83 in 1998.

Days at or above 30 C (86 F) per year at Beltsville
Year	Days	Decade average
1948	44	47.5
1949	51	47.5
1950	37	58
1951	56	58
1952	60	58
1953	62	58
1954	58	58
1955	56	58
1956	53	58
1957	78	58
1958	47	58
1959	73	58
1960	48	55.1
1961	62	55.1
1962	55	55.1
1963	52	55.1
1964	66	55.1
1965	63	55.1
1966	67	55.1
1967	35	55.1
1968	51	55.1
1969	52	55.1
1970	61	49
1971	43	49
1972	38	49
1973	55	49
1974	43	49
1975	47	49
1976	51	49
1977	66	49
1978	53	49
1979	33	49
1980	64	55.4
1981	39	55.4
1982	44	55.4
1983	63	55.4
1984	42	55.4
1985	54	55.4
1986	69	55.4
1987	70	55.4
1988	67	55.4
1989	42	55.4
1990	58	64.1
1991	82	64.1
1992	41	64.1
1993	71	64.1
1996	58	64.1
1997	54	64.1
1998	83	64.1
1999	66	64.1
2000	45	54
2001	46	54
2002	63	54
2003	38	54
2004	47	54
2005	70	54
2006	61	54
2007	77	54
2008	49	54
2009	44	54
2010	79	63.8
2011	62	63.8
2012	70	63.8
2013	48	63.8
2014	39	63.8
2015	65	63.8
2016	74	63.8
2017	60	63.8
2018	61	63.8
2019	80	63.8
2020	60	60.1
2021	71	60.1
2022	63	60.1
2023	57	60.1
2024	63	60.1
2025	60	60.1
2026	47	60.1

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

First to last qualifying date each year at Beltsville
Year	First date	Last date
1948	1948-03-21	1948-09-21
1949	1949-05-05	1949-09-06
1950	1950-05-07	1950-09-04
1951	1951-04-30	1951-10-07
1952	1952-04-23	1952-09-15
1953	1953-05-12	1953-10-01
1954	1954-05-03	1954-10-14
1955	1955-05-25	1955-09-21
1956	1956-04-29	1956-09-24
1957	1957-04-22	1957-09-23
1958	1958-06-01	1958-10-11
1959	1959-04-10	1959-10-07
1960	1960-04-15	1960-10-16
1961	1961-04-26	1961-09-26
1962	1962-04-27	1962-10-13
1963	1963-04-03	1963-09-13
1964	1964-04-18	1964-09-18
1965	1965-05-04	1965-09-24
1966	1966-05-07	1966-09-12
1967	1967-06-10	1967-10-06
1968	1968-06-07	1968-09-26
1969	1969-04-28	1969-09-18
1970	1970-05-10	1970-09-27
1971	1971-05-20	1971-09-11
1972	1972-05-31	1972-09-27
1973	1973-06-05	1973-09-06
1974	1974-04-30	1974-09-14
1975	1975-05-21	1975-08-31
1976	1976-04-17	1976-09-15
1977	1977-04-13	1977-09-21
1978	1978-05-21	1978-09-20
1979	1979-05-10	1979-09-15
1980	1980-05-14	1980-09-23
1981	1981-05-26	1981-09-15
1982	1982-05-13	1982-09-19
1983	1983-04-29	1983-09-13
1984	1984-05-20	1984-09-26
1985	1985-04-20	1985-09-11
1986	1986-05-02	1986-10-03
1987	1987-05-12	1987-09-16
1988	1988-05-24	1988-09-24
1989	1989-05-27	1989-09-22
1990	1990-03-13	1990-10-10
1991	1991-04-09	1991-10-05
1992	1992-04-18	1992-10-17
1993	1993-05-12	1993-09-16
1996	1996-04-23	1996-09-11
1997	1997-05-20	1997-10-08
1998	1998-03-31	1998-09-28
1999	1999-05-23	1999-09-10
2000	2000-05-06	2000-10-05
2001	2001-04-10	2001-09-11
2002	2002-04-17	2002-09-22
2003	2003-06-13	2003-09-02
2004	2004-04-19	2004-09-24
2005	2005-06-06	2005-09-24
2006	2006-05-29	2006-09-19
2007	2007-05-26	2007-10-10
2008	2008-06-06	2008-09-15
2009	2009-04-26	2009-09-24
2010	2010-04-07	2010-09-26
2011	2011-05-25	2011-09-15
2012	2012-04-17	2012-09-09
2013	2013-04-11	2013-10-17
2014	2014-05-09	2014-09-12
2015	2015-05-06	2015-09-20
2016	2016-05-26	2016-10-20
2017	2017-04-30	2017-10-11
2018	2018-05-03	2018-10-05
2019	2019-05-03	2019-10-03
2020	2020-06-04	2020-09-05
2021	2021-04-29	2021-10-04
2022	2022-05-21	2022-09-20
2023	2023-04-06	2023-09-13
2024	2024-04-30	2024-09-02
2025	2025-05-17	2025-09-20
2026	2026-04-02	2026-08-08

Every Fixed Threshold

Fixed thresholds at Beltsville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	77	83	1998	47
35 C (95 F): Days	65	21	1988	9
90 F (32.2 C): Days	77	53	1988	21
100 F (37.8 C): Days	19	4	1988	3
0 C (32 F): Ice days (max	76	31	1977	15
0 C (32 F): Frost days (min	77	138	1960	66
-10 C (14 F): Days with min	74	39	1977	17
-20 C (-4 F): Days with min	15	5	1961	1
20 C (68 F): Tropical nights (min	77	80	2018	33
25 C (77 F): Days with min	21	5	2024	2
10 mm (0.39 in): Days with 10 mm or more rain	77	53	1972	20
25 mm (0.98 in): Days with 25 mm or more rain	77	24	2018	3
50 mm (1.97 in): Days with 50 mm or more rain	63	5	1971	2
100 mm (3.94 in): Days with 100 mm or more rain	17	2	1955	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	5	1966	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1987	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2010	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Beltsville 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).

Beltsville Threshold Days by Year (USC00180700)

Key Facts for Beltsville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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