| COMPLETE WINNIPEG RECORD TEMPERATURES SINCE 1872 | ||||||
| May | ||||||
| DATE | HIGH | YEAR | LOW | YEAR | COMMENTS | |
| 1 | 29.2 | 1980 | -11.1 | 1958 | ||
| 2 | 31.9 | 2000 | -11.7 | 1907 | ||
| 3 | 31.9 | 1980 | -9.4 | 1891 | ||
| 4 | 31.1 | 1897* | -10.0 | 1900 | ||
| 5 | 35.2 | 2016 | -8.3 | 1968 | Previous record high: 31.7 in 1926 | |
| 6 | 32.1 | 1992 | -10.1 | 1989 | ||
| 7 | 34.4 | 1891 | -11.1 | 1907 | ||
| 8 | 35.0 | 1874 | -6.7 | 1947 | ||
| 9 | 31.3 | 2007 | -8.5 | 1981 | Previous record high: 30.7 in 1992 | |
| 10 | 31.0 | 1977 | -7.8 | 1890* | ||
| 11 | 32.8 | 1887 | -9.4 | 1946 | ||
| 12 | 35.6 | 2025 | -10.0 | 1918 | Previous record high: 32.8 in 1958 | |
| 13 | 37.0 | 2025 | -7.8 | 1888 | Previous record high: 33.3 in 1900* | |
| 14 | 32.2 | 1931 | -9.4 | 1888 | ||
| 15 | 34.1 | 1987 | -8.6 | 1983 | ||
| 16 | 33.3 | 1972 | -6.7 | 1961 | ||
| 17 | 33.3 | 1901 | -8.9 | 1888 | ||
| 18 | 33.3 | 1972 | -7.2 | 2002 | Mt. St. Helens erupts May 18 1980 | |
| 19 | 35.0 | 1948 | -5.6 | 1924 | ||
| 20 | 32.4 | 1980* | -6.7 | 1907 | 4 record highs in Winnipeg start 2 days later | |
| 21 | 36.5 | 1980 | -4.4 | 1882 | ||
| 22 | 37.0 | 1980 | -6.7 | 1882 | ||
| 23 | 35.6 | 1928 | -3.3 | 1924* | ||
| 24 | 33.3 | 2014 | -6.3 | 2002 | Previous record high: 32.7 in 1980 | |
| 25 | 33.0 | 1980 | -2.8 | 1891* | ||
| 26 | 32.8 | 1969 | -3.7 | 2011 | Previous record low: -2.8 in 1907 | |
| 27 | 34.4 | 1919 | -5.0 | 1889* | ||
| 28 | 35.0 | 1919 | -6.7 | 1889 | ||
| 29 | 34.4 | 1939 | -5.6 | 1945 | ||
| 30 | 37.8 | 1934 | -3.9 | 1889* | ||
| 31 | 35.2 | 1988 | -5.0 | 1897 | ||
| * = Record has since been equalled, but year not recorded; previous records noted when known. | ||||||
| Red: Highest ever for the month. Blue: Lowest ever for the month. Bold: Highest or lowest ever. | ||||||
| All temperatures are Celsius. | Page last updated: May 14, 2025 | |||||