May weather in Superior, WI
The average temperature in Superior in May is 49.1°F (40.9°F–57.4°F). Average precipitation: 3.37 inches.
May is a spring month in Superior, and is warmer than the annual average of 41.4°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 49m. For travel, May is a comfortable month to visit.
Avg High
57.4°F
Avg Low
40.9°F
Precipitation
3.37 in
Daylight
14h 49m
May records in Superior
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.0°F (1952) | 19.9°F (1966) | 2.73 in (1936) |
| May 2 | 81.0°F (2012) | 21.0°F (1909) | 1.37 in (2008) |
| May 3 | 81.0°F (2000) | 10.9°F (1967) | 1.48 in (1944) |
| May 4 | 91.0°F (1980) | 18.0°F (1957) | 1.83 in (1944) |
| May 5 | 82.9°F (1941) | 21.0°F (1957) | 2.80 in (1950) |
| May 6 | 95.0°F (2016) | 23.0°F (1989) | 1.12 in (1932) |
| May 7 | 90.0°F (1953) | 15.1°F (1990) | 0.73 in (2010) |
| May 8 | 90.0°F (1953) | 21.9°F (1956) | 1.48 in (2000) |
| May 9 | 84.9°F (1953) | 14.0°F (1966) | 1.65 in (1979) |
| May 10 | 88.0°F (2007) | 19.0°F (1966) | 0.92 in (1979) |
| May 11 | 90.0°F (2025) | 19.9°F (1960) | 0.92 in (1992) |
| May 12 | 89.1°F (2025) | 15.1°F (2013) | 1.70 in (1935) |
| May 13 | 89.1°F (1977) | 23.0°F (1953) | 1.58 in (2010) |
| May 14 | 91.0°F (1977) | 24.1°F (1964) | 1.34 in (1942) |
| May 15 | 91.0°F (1932) | 23.0°F (1967) | 2.18 in (1961) |
| May 16 | 89.1°F (2018) | 19.9°F (1957) | 2.09 in (1911) |
| May 17 | 89.1°F (1962) | 19.9°F (1955) | 1.12 in (1987) |
| May 18 | 88.0°F (1955) | 30.0°F (1950) | 1.41 in (1938) |
| May 19 | 88.0°F (1970) | 28.0°F (1912) | 1.39 in (2003) |
| May 20 | 89.1°F (1994) | 27.0°F (1954) | 1.50 in (1953) |
| May 21 | 90.0°F (1964) | 27.0°F (1958) | 2.50 in (1953) |
| May 22 | 93.9°F (1964) | 19.9°F (2004) | 1.28 in (1916) |
| May 23 | 91.0°F (1964) | 24.1°F (2013) | 1.45 in (1920) |
| May 24 | 84.0°F (1985) | 23.0°F (1956) | 1.80 in (1993) |
| May 25 | 89.1°F (2018) | 30.9°F (1955) | 1.60 in (1918) |
| May 26 | 88.0°F (1914) | 25.0°F (1961) | 2.00 in (1951) |
| May 27 | 86.0°F (1966) | 28.9°F (1947) | 1.42 in (1932) |
| May 28 | 93.9°F (1969) | 28.9°F (1966) | 1.85 in (2012) |
| May 29 | 91.9°F (1986) | 27.0°F (1961) | 3.03 in (1913) |
| May 30 | 93.9°F (1986) | 25.0°F (1966) | 1.53 in (1942) |
| May 31 | 96.1°F (1914) | 24.1°F (1967) | 1.75 in (1954) |