Sioux Lookout A Threshold Days by Year (CA006037775)
16 fixed thresholds counted per year at Sioux Lookout A (CA006037775): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Sioux Lookout A Thresholds
- Sioux Lookout A: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1955 with 16.
- Sioux Lookout A: days with a maximum temperature at or below 0 C (32 F) in 45 years, most in 1950 with 152.
- Sioux Lookout A: nights with a minimum temperature at or below 0 C (32 F) in 45 years, most in 1966 with 222.
- Sioux Lookout A: nights with a minimum temperature at or below -10 C (14 F) in 45 years, most in 1978 with 137.
- 16 fixed thresholds have at least one qualifying day at Sioux Lookout A.
Days at or above 30 C (86 F)
45 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1939 | 5 | 5 |
| 1940 | 12 | 7.4 |
| 1941 | 13 | 7.4 |
| 1942 | 2 | 7.4 |
| 1943 | 6 | 7.4 |
| 1944 | 4 | 7.4 |
| 1945 | 6 | 7.4 |
| 1946 | 4 | 7.4 |
| 1947 | 13 | 7.4 |
| 1948 | 5 | 7.4 |
| 1949 | 9 | 7.4 |
| 1950 | 1 | 5.2 |
| 1951 | 4 | 5.2 |
| 1952 | 5 | 5.2 |
| 1953 | 7 | 5.2 |
| 1954 | 2 | 5.2 |
| 1955 | 16 | 5.2 |
| 1956 | 4 | 5.2 |
| 1957 | 5 | 5.2 |
| 1958 | 2 | 5.2 |
| 1959 | 6 | 5.2 |
| 1960 | 5 | 5 |
| 1961 | 6 | 5 |
| 1962 | 2 | 5 |
| 1963 | 10 | 5 |
| 1964 | 9 | 5 |
| 1965 | 2 | 5 |
| 1966 | 7 | 5 |
| 1967 | 2 | 5 |
| 1968 | 1 | 5 |
| 1969 | 6 | 5 |
| 1970 | 10 | 5.8 |
| 1971 | 3 | 5.8 |
| 1972 | 7 | 5.8 |
| 1973 | 2 | 5.8 |
| 1974 | 5 | 5.8 |
| 1975 | 8 | 5.8 |
| 1976 | 13 | 5.8 |
| 1977 | 3 | 5.8 |
| 1978 | 2 | 5.8 |
| 1979 | 5 | 5.8 |
| 1980 | 6 | 7.5 |
| 1981 | 7 | 7.5 |
| 1982 | 1 | 7.5 |
| 1983 | 16 | 7.5 |
| Year | First date | Last date |
|---|---|---|
| 1939 | 1939-05-29 | 1939-08-07 |
| 1940 | 1940-07-05 | 1940-09-06 |
| 1941 | 1941-05-18 | 1941-08-01 |
| 1942 | 1942-07-11 | 1942-07-17 |
| 1943 | 1943-07-07 | 1943-07-12 |
| 1944 | 1944-05-28 | 1944-07-25 |
| 1945 | 1945-06-22 | 1945-09-06 |
| 1946 | 1946-06-22 | 1946-08-06 |
| 1947 | 1947-07-03 | 1947-08-23 |
| 1948 | 1948-06-02 | 1948-09-04 |
| 1949 | 1949-06-30 | 1949-08-08 |
| 1950 | 1950-07-28 | 1950-07-28 |
| 1951 | 1951-07-24 | 1951-07-29 |
| 1952 | 1952-04-30 | 1952-09-13 |
| 1953 | 1953-05-07 | 1953-08-31 |
| 1954 | 1954-07-24 | 1954-07-28 |
| 1955 | 1955-06-16 | 1955-08-19 |
| 1956 | 1956-06-10 | 1956-06-21 |
| 1957 | 1957-07-26 | 1957-08-01 |
| 1958 | 1958-07-23 | 1958-08-01 |
| 1959 | 1959-06-06 | 1959-08-05 |
| 1960 | 1960-07-08 | 1960-08-17 |
| 1961 | 1961-06-28 | 1961-08-29 |
| 1962 | 1962-06-27 | 1962-06-28 |
| 1963 | 1963-06-23 | 1963-07-25 |
| 1964 | 1964-05-21 | 1964-08-01 |
| 1965 | 1965-07-23 | 1965-08-11 |
| 1966 | 1966-06-29 | 1966-08-03 |
| 1967 | 1967-07-20 | 1967-07-21 |
| 1968 | 1968-07-06 | 1968-07-06 |
| 1969 | 1969-05-27 | 1969-08-23 |
| 1970 | 1970-06-06 | 1970-08-14 |
| 1971 | 1971-08-08 | 1971-09-02 |
| 1972 | 1972-05-18 | 1972-08-30 |
| 1973 | 1973-06-24 | 1973-08-28 |
| 1974 | 1974-06-28 | 1974-07-13 |
| 1975 | 1975-06-28 | 1975-07-31 |
| 1976 | 1976-06-03 | 1976-09-07 |
| 1977 | 1977-05-13 | 1977-07-18 |
| 1978 | 1978-06-29 | 1978-08-12 |
| 1979 | 1979-07-09 | 1979-07-13 |
| 1980 | 1980-05-22 | 1980-07-13 |
| 1981 | 1981-07-04 | 1981-07-12 |
| 1982 | 1982-07-20 | 1982-07-20 |
| 1983 | 1983-06-11 | 1983-09-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 45 | 16 | 1955 | 16 |
| 35 C (95 F): Days | 8 | 2 | 1949 | 1 |
| 90 F (32.2 C): Days | 27 | 6 | 1975 | 3 |
| 0 C (32 F): Ice days (max | 45 | 152 | 1950 | 123 |
| 0 C (32 F): Frost days (min | 45 | 222 | 1966 | 197 |
| -10 C (14 F): Days with min | 45 | 137 | 1978 | 102 |
| -20 C (-4 F): Days with min | 45 | 91 | 1972 | 48 |
| -30 C (-22 F): Days with min | 45 | 39 | 1972 | 17 |
| -40 C (-40 F): Days with min | 16 | 5 | 1968 | 2 |
| 20 C (68 F): Tropical nights (min | 22 | 7 | 1983 | 7 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 45 | 31 | 1953 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 43 | 8 | 1943 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 8 | 2 | 1941 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1941 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 43 | 10 | 1954 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 1977 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.
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).