Bruce Rock Threshold Days by Year (ASN00010016)

4 fixed thresholds counted per year at Bruce Rock (ASN00010016): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bruce Rock Thresholds

Bruce Rock: days with 10 mm (0.39 in) or more of precipitation in 87 years, most in 1999 with 18.
Bruce Rock: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1932 with 4.
Bruce Rock: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 1916 with 1.
Bruce Rock: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1990 with 1.
4 fixed thresholds have at least one qualifying day at Bruce Rock.

Days with 10 mm (0.39 in) or more of precipitation

87 years with a qualifying day

Days per year at Bruce Rock with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1999.

Days with 10 mm (0.39 in) or more of precipitation per year at Bruce Rock
Year	Days	Decade average
1915	10	10.8
1916	10	10.8
1917	13	10.8
1918	13	10.8
1919	8	10.8
1920	9	9.4
1921	6	9.4
1922	11	9.4
1923	13	9.4
1924	10	9.4
1925	10	9.4
1926	11	9.4
1927	7	9.4
1928	6	9.4
1929	11	9.4
1930	10	7.7
1931	9	7.7
1932	9	7.7
1933	5	7.7
1934	8	7.7
1935	6	7.7
1936	7	7.7
1937	5	7.7
1938	6	7.7
1939	12	7.7
1940	4	8.6
1941	6	8.6
1942	10	8.6
1943	17	8.6
1944	7	8.6
1945	8	8.6
1946	11	8.6
1947	7	8.6
1948	8	8.6
1949	8	8.6
1950	5	8.7
1951	11	8.7
1952	9	8.7
1953	9	8.7
1954	4	8.7
1955	10	8.7
1956	8	8.7
1957	8	8.7
1958	12	8.7
1959	11	8.7
1960	8	8.7
1961	4	8.7
1962	10	8.7
1963	17	8.7
1964	7	8.7
1965	13	8.7
1966	9	8.7
1967	6	8.7
1968	9	8.7
1969	4	8.7
1970	6	7.1
1971	6	7.1
1972	5	7.1
1973	11	7.1
1975	11	7.1
1977	7	7.1
1978	6	7.1
1979	5	7.1
1980	3	8.8
1981	8	8.8
1982	8	8.8
1983	11	8.8
1984	12	8.8
1985	8	8.8
1986	11	8.8
1987	9	8.8
1988	9	8.8
1989	9	8.8
1990	11	9
1991	6	9
1994	5	9
1998	5	9
1999	18	9
2000	8	6.4
2001	6	6.4
2002	4	6.4
2003	9	6.4
2004	5	6.4
2018	7	7
2021	13	10.7
2022	15	10.7
2023	4	10.7

For each year, a bar from the first to the last day at Bruce Rock meeting 10 mm (0.39 in).

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

Every Fixed Threshold

Fixed thresholds at Bruce Rock
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	87	18	1999	4
25 mm (0.98 in): Days with 25 mm or more rain	63	4	1932	2
50 mm (1.97 in): Days with 50 mm or more rain	13	1	1916	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1990	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

Data for Bruce Rock 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).

Bruce Rock Threshold Days by Year (ASN00010016)

Key Facts for Bruce Rock Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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