May weather in Webster, SD
The average temperature in Webster in May is 55.8°F (45.2°F–66.4°F). Average precipitation: 3.39 inches.
May is a spring month in Webster, and is warmer than the annual average of 42.7°F. Daily temperatures swing about 21.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 41m. For travel, May is a comfortable month to visit.
Avg High
66.4°F
Avg Low
45.2°F
Precipitation
3.39 in
Daylight
14h 41m
May records in Webster
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 96.1°F (1959) | 19.9°F (1961) | 1.00 in (1972) |
| May 2 | 90.0°F (1959) | 18.0°F (1967) | 1.04 in (1896) |
| May 3 | 87.1°F (1981) | 19.0°F (1967) | 1.46 in (1991) |
| May 4 | 84.9°F (1897) | 19.9°F (1967) | 1.20 in (2007) |
| May 5 | 90.0°F (1897) | 24.1°F (1954) | 3.70 in (2007) |
| May 6 | 88.0°F (1897) | 19.0°F (1976) | 1.50 in (2001) |
| May 7 | 88.0°F (2016) | 21.9°F (1976) | 0.85 in (2015) |
| May 8 | 91.9°F (1895) | 26.1°F (1954) | 1.84 in (2002) |
| May 9 | 87.1°F (1987) | 25.0°F (1966) | 1.27 in (2022) |
| May 10 | 90.0°F (1987) | 21.9°F (1981) | 0.80 in (1999) |
| May 11 | 86.0°F (1958) | 27.0°F (1979) | 2.97 in (1998) |
| May 12 | 89.1°F (2025) | 25.0°F (1971) | 1.55 in (1998) |
| May 13 | 95.0°F (1894) | 24.1°F (1895) | 1.32 in (1972) |
| May 14 | 89.1°F (2001) | 27.0°F (1983) | 1.07 in (1961) |
| May 15 | 97.0°F (1894) | 21.9°F (1959) | 0.95 in (1965) |
| May 16 | 90.0°F (1987) | 30.9°F (2014) | 2.47 in (1962) |
| May 17 | 91.0°F (2012) | 30.0°F (1968) | 1.79 in (1961) |
| May 18 | 91.0°F (1893) | 28.9°F (1968) | 2.00 in (2019) |
| May 19 | 93.9°F (2009) | 26.1°F (1894) | 0.62 in (1988) |
| May 20 | 87.1°F (1955) | 27.0°F (1895) | 1.01 in (1957) |
| May 21 | 91.9°F (1964) | 23.0°F (1895) | 1.65 in (1988) |
| May 22 | 89.1°F (1964) | 24.1°F (1963) | 2.45 in (2007) |
| May 23 | 86.0°F (1955) | 32.0°F (1893) | 2.48 in (1962) |
| May 24 | 86.0°F (2010) | 21.9°F (1897) | 1.41 in (1973) |
| May 25 | 88.0°F (1980) | 30.0°F (1893) | 1.01 in (1957) |
| May 26 | 89.1°F (1966) | 25.0°F (1895) | 1.33 in (1960) |
| May 27 | 93.0°F (1969) | 33.1°F (1893) | 0.74 in (1996) |
| May 28 | 96.1°F (2018) | 28.0°F (1894) | 1.13 in (1956) |
| May 29 | 96.1°F (2018) | 35.1°F (1954) | 2.54 in (1991) |
| May 30 | 89.1°F (2002) | 26.1°F (1897) | 1.20 in (1959) |
| May 31 | 88.0°F (1893) | 21.9°F (1897) | 1.83 in (2014) |