Dundurn Threshold Days by Year (CA004052280)
18 fixed thresholds counted per year at Dundurn (CA004052280): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Dundurn Thresholds
- Dundurn: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 1961 with 47.
- Dundurn: days with a maximum temperature at or below 0 C (32 F) in 55 years, most in 1948 with 144.
- Dundurn: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1925 with 17.
- Dundurn: nights with a minimum temperature at or below 0 C (32 F) in 54 years, most in 1924 with 228.
- 18 fixed thresholds have at least one qualifying day at Dundurn.
Days at or above 30 C (86 F)
55 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1924 | 8 | 9.3 |
| 1925 | 5 | 9.3 |
| 1926 | 11 | 9.3 |
| 1927 | 6 | 9.3 |
| 1928 | 8 | 9.3 |
| 1929 | 18 | 9.3 |
| 1930 | 19 | 26.7 |
| 1931 | 22 | 26.7 |
| 1932 | 16 | 26.7 |
| 1933 | 32 | 26.7 |
| 1934 | 30 | 26.7 |
| 1935 | 16 | 26.7 |
| 1936 | 38 | 26.7 |
| 1937 | 43 | 26.7 |
| 1938 | 22 | 26.7 |
| 1939 | 29 | 26.7 |
| 1940 | 23 | 23.3 |
| 1941 | 30 | 23.3 |
| 1942 | 12 | 23.3 |
| 1943 | 31 | 23.3 |
| 1944 | 20 | 23.3 |
| 1945 | 27 | 23.3 |
| 1946 | 20 | 23.3 |
| 1947 | 26 | 23.3 |
| 1948 | 21 | 23.3 |
| 1953 | 20 | 16.9 |
| 1954 | 7 | 16.9 |
| 1955 | 20 | 16.9 |
| 1956 | 15 | 16.9 |
| 1957 | 15 | 16.9 |
| 1958 | 17 | 16.9 |
| 1959 | 24 | 16.9 |
| 1960 | 32 | 23.1 |
| 1961 | 47 | 23.1 |
| 1962 | 15 | 23.1 |
| 1963 | 25 | 23.1 |
| 1964 | 20 | 23.1 |
| 1966 | 17 | 23.1 |
| 1967 | 27 | 23.1 |
| 1968 | 7 | 23.1 |
| 1969 | 18 | 23.1 |
| 1970 | 18 | 15.2 |
| 1971 | 14 | 15.2 |
| 1972 | 15 | 15.2 |
| 1973 | 15 | 15.2 |
| 1974 | 11 | 15.2 |
| 1975 | 13 | 15.2 |
| 1976 | 16 | 15.2 |
| 1977 | 9 | 15.2 |
| 1978 | 19 | 15.2 |
| 1979 | 22 | 15.2 |
| 1980 | 17 | 15.8 |
| 1981 | 22 | 15.8 |
| 1982 | 7 | 15.8 |
| 1983 | 17 | 15.8 |
| Year | First date | Last date |
|---|---|---|
| 1924 | 1924-07-02 | 1924-09-05 |
| 1925 | 1925-05-20 | 1925-08-21 |
| 1926 | 1926-06-26 | 1926-08-24 |
| 1927 | 1927-06-26 | 1927-09-06 |
| 1928 | 1928-05-06 | 1928-09-18 |
| 1929 | 1929-06-16 | 1929-08-31 |
| 1930 | 1930-06-07 | 1930-09-06 |
| 1931 | 1931-05-13 | 1931-09-06 |
| 1932 | 1932-07-16 | 1932-09-08 |
| 1933 | 1933-05-30 | 1933-08-30 |
| 1934 | 1934-05-15 | 1934-10-12 |
| 1935 | 1935-06-28 | 1935-08-23 |
| 1936 | 1936-05-26 | 1936-09-04 |
| 1937 | 1937-06-13 | 1937-09-20 |
| 1938 | 1938-05-27 | 1938-09-24 |
| 1939 | 1939-04-28 | 1939-09-20 |
| 1940 | 1940-07-02 | 1940-09-04 |
| 1941 | 1941-05-24 | 1941-08-14 |
| 1942 | 1942-04-21 | 1942-09-06 |
| 1943 | 1943-05-21 | 1943-10-06 |
| 1944 | 1944-05-27 | 1944-09-11 |
| 1945 | 1945-06-20 | 1945-09-07 |
| 1946 | 1946-05-26 | 1946-09-15 |
| 1947 | 1947-07-02 | 1947-09-12 |
| 1948 | 1948-05-25 | 1948-09-22 |
| 1953 | 1953-05-06 | 1953-08-23 |
| 1954 | 1954-05-19 | 1954-08-30 |
| 1955 | 1955-06-14 | 1955-09-02 |
| 1956 | 1956-06-01 | 1956-09-26 |
| 1957 | 1957-07-09 | 1957-10-02 |
| 1958 | 1958-05-12 | 1958-09-07 |
| 1959 | 1959-05-16 | 1959-08-07 |
| 1960 | 1960-05-11 | 1960-09-15 |
| 1961 | 1961-05-22 | 1961-09-16 |
| 1962 | 1962-06-23 | 1962-08-17 |
| 1963 | 1963-05-31 | 1963-09-09 |
| 1964 | 1964-05-20 | 1964-08-18 |
| 1966 | 1966-05-26 | 1966-09-18 |
| 1967 | 1967-06-26 | 1967-09-06 |
| 1968 | 1968-06-19 | 1968-09-10 |
| 1969 | 1969-07-10 | 1969-09-13 |
| 1970 | 1970-06-02 | 1970-08-16 |
| 1971 | 1971-05-13 | 1971-09-06 |
| 1972 | 1972-05-31 | 1972-08-29 |
| 1973 | 1973-06-22 | 1973-08-16 |
| 1974 | 1974-06-19 | 1974-08-05 |
| 1975 | 1975-06-24 | 1975-09-16 |
| 1976 | 1976-05-28 | 1976-09-17 |
| 1977 | 1977-04-26 | 1977-08-24 |
| 1978 | 1978-05-21 | 1978-09-04 |
| 1979 | 1979-06-12 | 1979-09-16 |
| 1980 | 1980-04-20 | 1980-08-02 |
| 1981 | 1981-05-20 | 1981-09-19 |
| 1982 | 1982-06-21 | 1982-09-03 |
| 1983 | 1983-06-09 | 1983-09-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 55 | 47 | 1961 | 17 |
| 35 C (95 F): Days | 41 | 18 | 1961 | 2 |
| 40 C (104 F): Days | 3 | 1 | 1941 | 1 |
| 90 F (32.2 C): Days | 53 | 33 | 1961 | 7 |
| 100 F (37.8 C): Days | 12 | 4 | 1933 | 1 |
| 0 C (32 F): Ice days (max | 55 | 144 | 1948 | 112 |
| 0 C (32 F): Frost days (min | 54 | 228 | 1924 | 192 |
| -10 C (14 F): Days with min | 54 | 147 | 1935 | 96 |
| -20 C (-4 F): Days with min | 54 | 85 | 1936 | 36 |
| -30 C (-22 F): Days with min | 54 | 46 | 1936 | 16 |
| -40 C (-40 F): Days with min | 32 | 12 | 1937 | 2 |
| 20 C (68 F): Tropical nights (min | 23 | 5 | 1926 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 55 | 17 | 1925 | 11 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 42 | 5 | 1954 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 7 | 1 | 1925 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1970 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 44 | 6 | 1924 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 2 | 1982 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.
Download the Data
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 . Last revised (2026-10-17).