May weather in Mellette, SD
The average temperature in Mellette in May is 55.7°F (42.8°F–68.5°F). Average precipitation: 3.34 inches.
May is a spring month in Mellette, and is warmer than the annual average of 42.8°F. Daily temperatures swing about 25.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 40m. For travel, May is a comfortable month to visit.
Avg High
68.5°F
Avg Low
42.8°F
Precipitation
3.34 in
Daylight
14h 40m
May records in Mellette
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 102.0°F (1959) | 19.0°F (1961) | 1.55 in (1972) |
| May 2 | 96.1°F (1959) | 18.0°F (1907) | 1.19 in (1997) |
| May 3 | 91.0°F (1952) | 16.0°F (2005) | 3.12 in (1964) |
| May 4 | 95.0°F (1926) | 19.9°F (2005) | 1.32 in (1912) |
| May 5 | 91.9°F (1926) | 19.9°F (1976) | 1.97 in (1950) |
| May 6 | 93.0°F (2000) | 19.0°F (1931) | 6.75 in (2007) |
| May 7 | 91.9°F (1916) | 21.9°F (1931) | 0.79 in (1927) |
| May 8 | 104.0°F (1934) | 21.9°F (1943) | 1.32 in (1950) |
| May 9 | 99.0°F (1934) | 19.9°F (1966) | 3.63 in (1986) |
| May 10 | 93.0°F (1992) | 15.1°F (1981) | 3.20 in (1922) |
| May 11 | 93.9°F (1906) | 25.0°F (1925) | 2.26 in (2015) |
| May 12 | 88.0°F (1900) | 23.0°F (1943) | 1.86 in (1998) |
| May 13 | 91.9°F (1932) | 19.9°F (1943) | 1.28 in (1906) |
| May 14 | 93.0°F (1932) | 25.0°F (1921) | 3.41 in (1908) |
| May 15 | 98.1°F (1931) | 23.0°F (1959) | 1.22 in (1962) |
| May 16 | 99.0°F (1934) | 25.0°F (1929) | 1.94 in (1962) |
| May 17 | 105.1°F (1934) | 24.1°F (1925) | 2.78 in (1909) |
| May 18 | 100.9°F (1934) | 26.1°F (1915) | 0.65 in (1996) |
| May 19 | 96.1°F (1934) | 27.0°F (2002) | 1.10 in (1913) |
| May 20 | 97.0°F (1934) | 18.0°F (1907) | 1.35 in (1957) |
| May 21 | 93.0°F (1925) | 28.0°F (1963) | 1.41 in (1899) |
| May 22 | 90.0°F (1955) | 21.9°F (1963) | 1.27 in (1988) |
| May 23 | 93.0°F (1950) | 25.0°F (1897) | 2.14 in (1965) |
| May 24 | 98.1°F (1926) | 24.1°F (1924) | 2.45 in (1906) |
| May 25 | 93.0°F (1926) | 26.1°F (1924) | 1.98 in (1906) |
| May 26 | 91.9°F (1911) | 28.0°F (1992) | 1.39 in (1959) |
| May 27 | 98.1°F (1934) | 28.0°F (1907) | 1.40 in (1931) |
| May 28 | 102.9°F (1934) | 28.9°F (1965) | 1.11 in (1956) |
| May 29 | 99.0°F (1934) | 23.0°F (1947) | 1.62 in (1978) |
| May 30 | 108.0°F (1934) | 26.1°F (1947) | 2.20 in (2007) |
| May 31 | 102.0°F (1934) | 32.0°F (1964) | 2.45 in (1945) |