May weather in Reliance, SD
The average temperature in Reliance in May is 58.6°F (44.9°F–72.4°F). Average precipitation: 3.29 inches.
May is a spring month in Reliance, and is warmer than the annual average of 48.1°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 33m. For travel, May is a comfortable month to visit.
Avg High
72.4°F
Avg Low
44.9°F
Precipitation
3.29 in
Daylight
14h 33m
May records in Reliance
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 102.0°F (1959) | 10.9°F (1909) | 1.25 in (1983) |
| May 2 | 97.0°F (1959) | 17.1°F (1909) | 1.76 in (1946) |
| May 3 | 91.0°F (1918) | 17.1°F (1967) | 0.83 in (1991) |
| May 4 | 99.0°F (1926) | 16.0°F (1967) | 1.20 in (1893) |
| May 5 | 100.0°F (2004) | 21.0°F (1944) | 1.72 in (1942) |
| May 6 | 93.0°F (2000) | 19.0°F (1925) | 0.85 in (1942) |
| May 7 | 98.1°F (1928) | 23.0°F (1947) | 1.14 in (1933) |
| May 8 | 104.0°F (1934) | 18.0°F (1980) | 4.00 in (1986) |
| May 9 | 98.1°F (1911) | 23.0°F (1966) | 1.20 in (2022) |
| May 10 | 93.0°F (1900) | 15.1°F (1981) | 3.40 in (1999) |
| May 11 | 98.1°F (1900) | 19.9°F (1946) | 1.10 in (1914) |
| May 12 | 95.0°F (1894) | 21.0°F (1946) | 1.60 in (2005) |
| May 13 | 102.9°F (2007) | 24.1°F (1966) | 1.45 in (2023) |
| May 14 | 104.0°F (2007) | 25.0°F (1924) | 1.54 in (1982) |
| May 15 | 98.1°F (1894) | 18.0°F (1959) | 1.53 in (2025) |
| May 16 | 102.0°F (1934) | 26.1°F (2011) | 1.53 in (1962) |
| May 17 | 106.0°F (1934) | 19.9°F (1925) | 4.45 in (1898) |
| May 18 | 104.0°F (1934) | 25.0°F (1915) | 0.98 in (1960) |
| May 19 | 99.0°F (1925) | 24.1°F (1895) | 0.82 in (1990) |
| May 20 | 100.0°F (1925) | 24.1°F (1895) | 1.55 in (1917) |
| May 21 | 99.0°F (1925) | 21.0°F (1931) | 2.15 in (1977) |
| May 22 | 96.1°F (1954) | 21.0°F (1963) | 1.68 in (2007) |
| May 23 | 105.1°F (1926) | 25.0°F (1908) | 1.84 in (1939) |
| May 24 | 105.1°F (1926) | 19.0°F (1924) | 0.93 in (1965) |
| May 25 | 95.0°F (1985) | 27.0°F (1924) | 1.77 in (1906) |
| May 26 | 97.0°F (1914) | 27.0°F (1961) | 1.30 in (1918) |
| May 27 | 102.0°F (1969) | 28.9°F (1992) | 4.03 in (2019) |
| May 28 | 108.0°F (1934) | 28.9°F (1965) | 2.30 in (1970) |
| May 29 | 108.0°F (1934) | 23.0°F (1947) | 1.03 in (1985) |
| May 30 | 107.1°F (1934) | 28.0°F (1947) | 2.88 in (1919) |
| May 31 | 100.0°F (1934) | 33.1°F (1903) | 1.15 in (2014) |