Canadian Threshold Days by Year (USC00411412)

18 fixed thresholds counted per year at Canadian (USC00411412): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Canadian Thresholds

Canadian: days with 10 mm (0.39 in) or more of precipitation in 81 years, most in 1923 with 31.
Canadian: days with 25 mm (0.98 in) or more of precipitation in 80 years, most in 1923 with 14.
Canadian: nights with a minimum temperature at or below 0 C (32 F) in 74 years, most in 1917 with 133.
Canadian: nights with a minimum temperature at or below -10 C (14 F) in 74 years, most in 1979 with 32.
18 fixed thresholds have at least one qualifying day at Canadian.

Days at or above 30 C (86 F)

70 years with a qualifying day

Days per year at Canadian with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 1963.

Days at or above 30 C (86 F) per year at Canadian
Year	Days	Decade average
1913	120	109.7
1914	114	109.7
1915	89	109.7
1916	117	109.7
1917	107	109.7
1918	122	109.7
1919	99	109.7
1920	101	108.4
1921	122	108.4
1922	122	108.4
1923	99	108.4
1924	108	108.4
1925	122	108.4
1926	104	108.4
1927	103	108.4
1928	95	108.4
1931	119	116.8
1933	124	116.8
1934	124	116.8
1935	99	116.8
1936	106	116.8
1937	110	116.8
1938	128	116.8
1939	124	116.8
1940	111	103.6
1941	85	103.6
1942	99	103.6
1944	101	103.6
1945	109	103.6
1946	105	103.6
1948	115	103.6
1954	111	117.5
1959	124	117.5
1960	109	120
1961	108	120
1962	130	120
1963	154	120
1964	124	120
1965	107	120
1966	116	120
1967	121	120
1968	112	120
1969	119	120
1970	132	123.6
1971	125	123.6
1972	128	123.6
1973	114	123.6
1974	111	123.6
1975	126	123.6
1976	113	123.6
1977	126	123.6
1979	137	123.6
1980	130	117.9
1981	134	117.9
1982	113	117.9
1983	119	117.9
1984	127	117.9
1985	118	117.9
1986	123	117.9
1987	108	117.9
1988	102	117.9
1989	105	117.9
1990	110	104.7
1991	120	104.7
1992	87	104.7
1993	116	104.7
1994	122	104.7
1995	95	104.7
1997	83	104.7
2000	117	117

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

First to last qualifying date each year at Canadian
Year	First date	Last date
1913	1913-04-02	1913-10-05
1914	1914-03-15	1914-10-17
1915	1915-04-04	1915-11-06
1916	1916-03-05	1916-11-05
1917	1917-02-25	1917-10-15
1918	1918-03-08	1918-10-13
1919	1919-04-19	1919-10-03
1920	1920-05-02	1920-10-17
1921	1921-03-16	1921-10-23
1922	1922-03-25	1922-10-27
1923	1923-05-09	1923-09-28
1924	1924-04-07	1924-11-05
1925	1925-02-04	1925-10-05
1926	1926-04-26	1926-10-17
1927	1927-04-09	1927-11-10
1928	1928-04-02	1928-10-10
1931	1931-04-06	1931-11-03
1933	1933-04-17	1933-10-10
1934	1934-03-20	1934-10-26
1935	1935-04-14	1935-10-15
1936	1936-04-12	1936-10-19
1937	1937-04-14	1937-10-04
1938	1938-03-20	1938-10-28
1939	1939-03-10	1939-10-26
1940	1940-02-29	1940-10-22
1941	1941-05-08	1941-10-13
1942	1942-04-04	1942-10-01
1944	1944-05-14	1944-10-24
1945	1945-05-06	1945-10-31
1946	1946-03-31	1946-10-23
1948	1948-04-07	1948-10-16
1954	1954-04-06	1954-10-19
1959	1959-03-24	1959-09-28
1960	1960-04-06	1960-10-10
1961	1961-04-19	1961-10-23
1962	1962-02-11	1962-10-15
1963	1963-03-28	1963-10-30
1964	1964-04-01	1964-10-21
1965	1965-04-04	1965-10-10
1966	1966-03-31	1966-11-16
1967	1967-03-02	1967-10-23
1968	1968-03-29	1968-10-31
1969	1969-04-01	1969-10-10
1970	1970-02-17	1970-10-07
1971	1971-03-13	1971-10-14
1972	1972-03-19	1972-10-17
1973	1973-04-29	1973-10-23
1974	1974-03-27	1974-10-04
1975	1975-03-20	1975-10-28
1976	1976-03-25	1976-10-12
1977	1977-04-08	1977-10-27
1979	1979-04-15	1979-10-27
1980	1980-04-19	1980-11-09
1981	1981-02-20	1981-10-04
1982	1982-03-11	1982-11-01
1983	1983-05-04	1983-10-16
1984	1984-03-13	1984-10-03
1985	1985-04-15	1985-10-08
1986	1986-03-30	1986-09-28
1987	1987-04-17	1987-10-09
1988	1988-04-07	1988-10-15
1989	1989-03-10	1989-10-14
1990	1990-05-13	1990-11-01
1991	1991-03-05	1991-10-23
1992	1992-04-30	1992-10-14
1993	1993-04-18	1993-10-07
1994	1994-03-18	1994-11-03
1995	1995-03-20	1995-10-23
1997	1997-05-14	1997-10-06
2000	2000-05-06	2000-10-03

Every Fixed Threshold

Fixed thresholds at Canadian
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	70	154	1963	117
35 C (95 F): Days	70	91	1980	65
40 C (104 F): Days	45	29	1980	11
90 F (32.2 C): Days	70	126	1963	98
100 F (37.8 C): Days	70	61	1980	34
110 F (43.3 C): Days	5	4	1980	1
0 C (32 F): Ice days (max	68	20	1918	12
0 C (32 F): Frost days (min	74	133	1917	126
-10 C (14 F): Days with min	74	32	1979	14
-20 C (-4 F): Days with min	25	4	1966	4
20 C (68 F): Tropical nights (min	74	68	1936	27
25 C (77 F): Days with min	26	7	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	81	31	1923	25
25 mm (0.98 in): Days with 25 mm or more rain	80	14	1923	8
50 mm (1.97 in): Days with 50 mm or more rain	49	4	1977	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1985	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	4	1987	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	3	1992	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

Data for Canadian 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).

Canadian Threshold Days by Year (USC00411412)

Key Facts for Canadian Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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