Barrage Mattawin Threshold Days by Year (CA007070456)
17 fixed thresholds counted per year at Barrage Mattawin (CA007070456): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Barrage Mattawin Thresholds
- Barrage Mattawin: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 1962 with 36.
- Barrage Mattawin: days with 10 cm (3.9 in) or more of snowfall in 51 years, most in 1958 with 10.
- Barrage Mattawin: days with a maximum temperature at or below 0 C (32 F) in 50 years, most in 1944 with 125.
- Barrage Mattawin: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1936 with 10.
- 17 fixed thresholds have at least one qualifying day at Barrage Mattawin.
Days at or above 30 C (86 F)
42 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1933 | 12 | 9.3 |
| 1934 | 21 | 9.3 |
| 1935 | 9 | 9.3 |
| 1936 | 3 | 9.3 |
| 1937 | 9 | 9.3 |
| 1938 | 4 | 9.3 |
| 1939 | 7 | 9.3 |
| 1940 | 1 | 6.6 |
| 1941 | 6 | 6.6 |
| 1942 | 3 | 6.6 |
| 1943 | 3 | 6.6 |
| 1944 | 13 | 6.6 |
| 1945 | 1 | 6.6 |
| 1946 | 3 | 6.6 |
| 1947 | 13 | 6.6 |
| 1948 | 7 | 6.6 |
| 1949 | 16 | 6.6 |
| 1950 | 1 | 5.6 |
| 1952 | 8 | 5.6 |
| 1953 | 8 | 5.6 |
| 1955 | 16 | 5.6 |
| 1956 | 2 | 5.6 |
| 1957 | 1 | 5.6 |
| 1959 | 3 | 5.6 |
| 1960 | 2 | 2.8 |
| 1961 | 1 | 2.8 |
| 1962 | 3 | 2.8 |
| 1963 | 7 | 2.8 |
| 1964 | 1 | 2.8 |
| 1966 | 2 | 2.8 |
| 1967 | 2 | 2.8 |
| 1968 | 5 | 2.8 |
| 1969 | 2 | 2.8 |
| 1970 | 3 | 4.1 |
| 1973 | 1 | 4.1 |
| 1975 | 10 | 4.1 |
| 1976 | 5 | 4.1 |
| 1977 | 4 | 4.1 |
| 1978 | 5 | 4.1 |
| 1979 | 1 | 4.1 |
| 1980 | 1 | 1 |
| 1981 | 1 | 1 |
| Year | First date | Last date |
|---|---|---|
| 1933 | 1933-06-10 | 1933-08-24 |
| 1934 | 1934-05-29 | 1934-09-25 |
| 1935 | 1935-07-11 | 1935-10-30 |
| 1936 | 1936-07-11 | 1936-07-13 |
| 1937 | 1937-05-05 | 1937-08-28 |
| 1938 | 1938-06-21 | 1938-10-12 |
| 1939 | 1939-05-21 | 1939-09-16 |
| 1940 | 1940-08-18 | 1940-08-18 |
| 1941 | 1941-06-20 | 1941-07-25 |
| 1942 | 1942-06-11 | 1942-06-30 |
| 1943 | 1943-07-11 | 1943-07-13 |
| 1944 | 1944-05-31 | 1944-08-10 |
| 1945 | 1945-07-31 | 1945-07-31 |
| 1946 | 1946-06-28 | 1946-06-30 |
| 1947 | 1947-06-11 | 1947-08-25 |
| 1948 | 1948-07-10 | 1948-08-28 |
| 1949 | 1949-06-03 | 1949-08-27 |
| 1950 | 1950-07-10 | 1950-07-10 |
| 1952 | 1952-07-06 | 1952-08-28 |
| 1953 | 1953-06-16 | 1953-09-04 |
| 1955 | 1955-06-06 | 1955-08-20 |
| 1956 | 1956-06-13 | 1956-06-14 |
| 1957 | 1957-06-18 | 1957-06-18 |
| 1959 | 1959-06-29 | 1959-07-29 |
| 1960 | 1960-08-18 | 1960-08-19 |
| 1961 | 1961-07-22 | 1961-07-22 |
| 1962 | 1962-05-17 | 1962-07-08 |
| 1963 | 1963-06-29 | 1963-07-28 |
| 1964 | 1964-06-30 | 1964-06-30 |
| 1966 | 1966-07-02 | 1966-07-03 |
| 1967 | 1967-06-03 | 1967-06-04 |
| 1968 | 1968-07-15 | 1968-09-19 |
| 1969 | 1969-06-27 | 1969-07-14 |
| 1970 | 1970-07-24 | 1970-08-11 |
| 1973 | 1973-07-25 | 1973-07-25 |
| 1975 | 1975-06-23 | 1975-08-03 |
| 1976 | 1976-06-06 | 1976-08-21 |
| 1977 | 1977-05-22 | 1977-07-20 |
| 1978 | 1978-05-27 | 1978-08-15 |
| 1979 | 1979-07-14 | 1979-07-14 |
| 1980 | 1980-06-25 | 1980-06-25 |
| 1981 | 1981-07-08 | 1981-07-08 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 42 | 21 | 1934 | 1 |
| 35 C (95 F): Days | 2 | 2 | 1935 | 2 |
| 90 F (32.2 C): Days | 17 | 11 | 1934 | 4 |
| 100 F (37.8 C): Days | 1 | 1 | 1975 | 1 |
| 0 C (32 F): Ice days (max | 50 | 125 | 1944 | 94 |
| 0 C (32 F): Frost days (min | 49 | 221 | 1958 | 188 |
| -10 C (14 F): Days with min | 49 | 129 | 1959 | 72 |
| -20 C (-4 F): Days with min | 49 | 74 | 1963 | 37 |
| -30 C (-22 F): Days with min | 49 | 33 | 1970 | 9 |
| -40 C (-40 F): Days with min | 23 | 5 | 1971 | 1 |
| 20 C (68 F): Tropical nights (min | 22 | 5 | 1949 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 51 | 36 | 1962 | 31 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 50 | 10 | 1936 | 5 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 1 | 1932 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 51 | 10 | 1958 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 15 | 2 | 1942 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1975 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.
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).