May weather in Superior, MT
The average temperature in Superior in May is 55.3°F (39.8°F–70.8°F). Average precipitation: 1.80 inches.
May is a spring month in Superior, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 31°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 52m. For travel, May is a comfortable month to visit.
Avg High
70.8°F
Avg Low
39.8°F
Precipitation
1.80 in
Daylight
14h 52m
May records in Superior
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.0°F (1985) | 21.0°F (1954) | 0.40 in (1920) |
| May 2 | 87.1°F (1966) | 19.9°F (1916) | 0.75 in (1950) |
| May 3 | 88.0°F (1966) | 24.1°F (1919) | 0.68 in (1964) |
| May 4 | 90.0°F (1966) | 24.1°F (1919) | 1.00 in (1932) |
| May 5 | 89.1°F (1966) | 19.0°F (1984) | 0.66 in (1961) |
| May 6 | 88.0°F (1966) | 21.9°F (1929) | 0.95 in (1983) |
| May 7 | 89.1°F (1947) | 23.0°F (1929) | 0.55 in (1947) |
| May 8 | 89.1°F (1987) | 19.9°F (1998) | 1.00 in (1948) |
| May 9 | 90.0°F (1949) | 24.1°F (1935) | 0.50 in (1947) |
| May 10 | 91.0°F (1940) | 21.0°F (1946) | 1.20 in (1920) |
| May 11 | 90.0°F (1949) | 25.0°F (1918) | 1.23 in (2004) |
| May 12 | 93.9°F (1993) | 21.0°F (2008) | 1.31 in (1958) |
| May 13 | 91.9°F (1931) | 24.1°F (1919) | 0.47 in (1951) |
| May 14 | 91.9°F (1931) | 26.1°F (1916) | 0.67 in (1943) |
| May 15 | 91.9°F (1939) | 26.1°F (1916) | 0.46 in (1968) |
| May 16 | 91.9°F (2006) | 25.0°F (1916) | 1.42 in (1980) |
| May 17 | 93.0°F (2006) | 25.0°F (2003) | 0.40 in (2018) |
| May 18 | 93.0°F (2006) | 26.1°F (1929) | 0.99 in (1991) |
| May 19 | 93.0°F (2006) | 28.0°F (1931) | 0.72 in (2016) |
| May 20 | 89.1°F (1958) | 27.0°F (1933) | 1.84 in (1957) |
| May 21 | 90.0°F (1928) | 25.0°F (1934) | 1.36 in (2002) |
| May 22 | 90.0°F (1988) | 23.0°F (1918) | 1.69 in (1998) |
| May 23 | 91.0°F (1941) | 26.1°F (1916) | 0.96 in (1980) |
| May 24 | 93.9°F (1934) | 25.0°F (1918) | 1.26 in (1942) |
| May 25 | 96.1°F (2001) | 17.1°F (1998) | 1.24 in (1980) |
| May 26 | 95.0°F (1966) | 24.1°F (1918) | 1.10 in (1980) |
| May 27 | 95.0°F (1986) | 21.9°F (1918) | 1.50 in (1998) |
| May 28 | 93.9°F (1934) | 24.1°F (1918) | 0.90 in (2006) |
| May 29 | 96.1°F (1986) | 26.1°F (1951) | 0.70 in (1927) |
| May 30 | 99.0°F (1936) | 27.0°F (1916) | 1.75 in (1985) |
| May 31 | 97.0°F (1936) | 26.1°F (1926) | 0.91 in (1947) |