May weather in Southwest City, MO
The average temperature in Southwest City in May is 68.5°F (57.5°F–79.5°F). Average precipitation: 6.21 inches.
May is a spring month in Southwest City, and is warmer than the annual average of 60.5°F. Daily temperatures swing about 22°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 57m. For travel, May is a wet month.
Avg High
79.5°F
Avg Low
57.5°F
Precipitation
6.21 in
Daylight
13h 57m
May records in Southwest City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2002) | 24.1°F (1903) | 3.72 in (2019) |
| May 2 | 87.1°F (1920) | 28.0°F (1961) | 1.89 in (1954) |
| May 3 | 90.0°F (1943) | 28.0°F (1903) | 2.75 in (2018) |
| May 4 | 91.9°F (2014) | 28.0°F (1954) | 2.71 in (1999) |
| May 5 | 91.0°F (2014) | 32.0°F (1945) | 3.09 in (2022) |
| May 6 | 89.1°F (1940) | 30.0°F (1944) | 2.68 in (2019) |
| May 7 | 89.1°F (1955) | 28.9°F (1992) | 2.58 in (2024) |
| May 8 | 91.9°F (1918) | 30.0°F (1908) | 2.19 in (1929) |
| May 9 | 89.1°F (1952) | 27.0°F (1923) | 5.30 in (1943) |
| May 10 | 88.0°F (1963) | 32.0°F (1909) | 4.80 in (1950) |
| May 11 | 89.1°F (1963) | 30.0°F (1924) | 2.31 in (1950) |
| May 12 | 91.0°F (2022) | 28.9°F (1960) | 3.58 in (1929) |
| May 13 | 89.1°F (1991) | 32.0°F (1971) | 2.97 in (1933) |
| May 14 | 89.1°F (2022) | 34.0°F (1904) | 4.56 in (1956) |
| May 15 | 89.1°F (2025) | 30.0°F (1926) | 2.31 in (2020) |
| May 16 | 90.0°F (1931) | 34.0°F (1916) | 2.65 in (2010) |
| May 17 | 91.0°F (2001) | 34.0°F (1973) | 2.63 in (1930) |
| May 18 | 90.0°F (1998) | 36.0°F (2002) | 2.61 in (1943) |
| May 19 | 91.0°F (1998) | 34.0°F (1910) | 4.78 in (1961) |
| May 20 | 91.0°F (2006) | 36.0°F (1954) | 3.19 in (2017) |
| May 21 | 91.0°F (1987) | 37.0°F (1901) | 8.00 in (1917) |
| May 22 | 89.1°F (1953) | 39.0°F (2001) | 1.97 in (1971) |
| May 23 | 91.0°F (2000) | 36.0°F (1963) | 3.93 in (2011) |
| May 24 | 93.0°F (1898) | 41.0°F (1913) | 2.41 in (2015) |
| May 25 | 93.9°F (1939) | 37.9°F (2001) | 2.28 in (2000) |
| May 26 | 93.9°F (1953) | 30.9°F (1901) | 3.55 in (1931) |
| May 27 | 93.9°F (2012) | 34.0°F (1901) | 2.69 in (1984) |
| May 28 | 99.0°F (1953) | 37.9°F (1907) | 2.07 in (1987) |
| May 29 | 98.1°F (1953) | 37.0°F (1984) | 3.52 in (1962) |
| May 30 | 98.1°F (1953) | 34.0°F (1898) | 1.86 in (1993) |
| May 31 | 96.1°F (1898) | 42.1°F (1972) | 2.58 in (1926) |