Boca Threshold Days by Year (USC00040931)

17 fixed thresholds counted per year at Boca (USC00040931): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boca Thresholds

Boca: days with 10 mm (0.39 in) or more of precipitation in 87 years, most in 1983 with 38.
Boca: days with 25 mm (0.98 in) or more of precipitation in 86 years, most in 2017 with 20.
Boca: days with a maximum temperature at or above 30 C (86 F) in 84 years, most in 2021 with 76.
Boca: days with a maximum temperature at or below 0 C (32 F) in 84 years, most in 1952 with 42.
17 fixed thresholds have at least one qualifying day at Boca.

Days at or above 30 C (86 F)

84 years with a qualifying day

Days per year at Boca with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 2021.

Days at or above 30 C (86 F) per year at Boca
Year	Days	Decade average
1937	38	30
1938	23	30
1939	29	30
1940	20	20.6
1941	10	20.6
1942	19	20.6
1943	20	20.6
1944	19	20.6
1945	34	20.6
1946	19	20.6
1947	17	20.6
1948	23	20.6
1949	25	20.6
1950	38	26.1
1951	38	26.1
1952	11	26.1
1953	21	26.1
1954	18	26.1
1955	33	26.1
1956	15	26.1
1957	18	26.1
1958	24	26.1
1959	45	26.1
1960	28	27.6
1961	42	27.6
1962	20	27.6
1963	13	27.6
1964	27	27.6
1965	11	27.6
1966	31	27.6
1967	37	27.6
1968	28	27.6
1969	39	27.6
1970	38	30.5
1971	31	30.5
1972	32	30.5
1973	29	30.5
1974	29	30.5
1975	23	30.5
1976	26	30.5
1977	46	30.5
1978	27	30.5
1979	24	30.5
1980	25	32.7
1981	55	32.7
1982	16	32.7
1983	12	32.7
1984	35	32.7
1985	38	32.7
1986	41	32.7
1987	32	32.7
1988	59	32.7
1989	14	32.7
1990	29	34.3
1991	38	34.3
1992	37	34.3
1993	19	34.3
1994	50	34.3
1995	20	34.3
1996	47	34.3
2002	44	47.1
2003	55	47.1
2004	39	47.1
2005	44	47.1
2006	44	47.1
2008	53	47.1
2009	51	47.1
2010	39	46.6
2011	22	46.6
2012	46	46.6
2013	47	46.6
2014	55	46.6
2015	41	46.6
2016	49	46.6
2017	63	46.6
2018	61	46.6
2019	43	46.6
2020	70	59.6
2021	76	59.6
2022	59	59.6
2023	37	59.6
2024	67	59.6
2025	49	59.6
2026	59	59.6

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

First to last qualifying date each year at Boca
Year	First date	Last date
1937	1937-06-21	1937-09-16
1938	1938-06-24	1938-09-17
1939	1939-05-29	1939-09-09
1940	1940-06-12	1940-08-18
1941	1941-07-05	1941-08-06
1942	1942-06-30	1942-09-26
1943	1943-07-09	1943-09-23
1944	1944-07-13	1944-09-11
1945	1945-06-18	1945-09-14
1946	1946-06-30	1946-08-26
1947	1947-06-18	1947-09-15
1948	1948-06-28	1948-09-13
1949	1949-06-15	1949-09-23
1950	1950-06-29	1950-09-06
1951	1951-06-16	1951-09-17
1952	1952-07-04	1952-09-03
1953	1953-07-06	1953-09-15
1954	1954-05-19	1954-09-02
1955	1955-06-08	1955-09-11
1956	1956-06-27	1956-08-23
1957	1957-06-24	1957-09-12
1958	1958-06-23	1958-09-07
1959	1959-06-19	1959-09-10
1960	1960-06-04	1960-09-27
1961	1961-06-15	1961-08-23
1962	1962-06-23	1962-09-18
1963	1963-07-13	1963-09-28
1964	1964-06-24	1964-08-25
1965	1965-07-06	1965-08-09
1966	1966-06-14	1966-09-06
1967	1967-06-30	1967-08-31
1968	1968-06-17	1968-09-09
1969	1969-06-04	1969-09-07
1970	1970-06-03	1970-09-10
1971	1971-07-14	1971-09-14
1972	1972-06-28	1972-08-28
1973	1973-06-09	1973-08-16
1974	1974-06-11	1974-09-23
1975	1975-06-14	1975-09-09
1976	1976-06-19	1976-09-10
1977	1977-06-05	1977-09-11
1978	1978-06-09	1978-08-30
1979	1979-06-28	1979-09-17
1980	1980-07-18	1980-10-04
1981	1981-06-19	1981-09-17
1982	1982-06-17	1982-09-03
1983	1983-05-28	1983-09-06
1984	1984-05-29	1984-09-19
1985	1985-06-12	1985-08-26
1986	1986-05-29	1986-09-07
1987	1987-06-13	1987-10-05
1988	1988-06-16	1988-09-09
1989	1989-07-07	1989-08-14
1990	1990-06-21	1990-08-15
1991	1991-06-11	1991-09-26
1992	1992-05-25	1992-09-29
1993	1993-06-20	1993-09-12
1994	1994-06-11	1994-09-28
1995	1995-06-25	1995-09-20
1996	1996-06-06	1996-10-08
2002	2002-06-06	2002-09-24
2003	2003-05-24	2003-09-29
2004	2004-06-24	2004-09-12
2005	2005-07-01	2005-09-02
2006	2006-06-23	2006-09-14
2008	2008-05-17	2008-09-17
2009	2009-05-17	2009-09-28
2010	2010-06-28	2010-10-02
2011	2011-06-22	2011-09-29
2012	2012-06-02	2012-10-01
2013	2013-05-12	2013-09-09
2014	2014-06-06	2014-10-05
2015	2015-06-24	2015-10-14
2016	2016-06-04	2016-09-29
2017	2017-06-17	2017-09-12
2018	2018-06-12	2018-09-28
2019	2019-06-12	2019-09-15
2020	2020-05-29	2020-10-07
2021	2021-06-01	2021-09-25
2022	2022-06-10	2022-09-09
2023	2023-07-01	2023-08-31
2024	2024-06-06	2024-10-07
2025	2025-05-30	2025-09-28
2026	2026-05-12	2026-10-05

Every Fixed Threshold

Fixed thresholds at Boca
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	84	76	2021	59
35 C (95 F): Days	50	18	2021	7
90 F (32.2 C): Days	83	55	2021	32
100 F (37.8 C): Days	2	2	2002	1
0 C (32 F): Ice days (max	84	42	1952	3
0 C (32 F): Frost days (min	83	314	1951	139
-10 C (14 F): Days with min	83	116	1990	22
-20 C (-4 F): Days with min	73	42	1949	2
-30 C (-22 F): Days with min	28	11	1950	1
-40 C (-40 F): Days with min	3	3	1937	1
10 mm (0.39 in): Days with 10 mm or more rain	87	38	1983	13
25 mm (0.98 in): Days with 25 mm or more rain	86	20	2017	1
50 mm (1.97 in): Days with 50 mm or more rain	45	5	1907	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1907	1
10 cm (3.9 in): Days with 10 cm or more snowfall	79	31	1952	4
25 cm (9.8 in): Days with 25 cm or more snowfall	70	8	1952	1
50 cm (19.7 in): Days with 50 cm or more snowfall	21	3	1952	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

Data for Boca 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).

Boca Threshold Days by Year (USC00040931)

Key Facts for Boca Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related