April weather in Custer, SD
The average temperature in Custer in April is 40.9°F (30.5°F–51.3°F). Average precipitation: 2.24 inches. Average snowfall is 11.0 inches.
April is a spring month in Custer, and is cooler than the annual average of 44.9°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 13m. For travel, April is cool.
Avg High
51.3°F
Avg Low
30.5°F
Precipitation
2.24 in
Snow
11.0 in
April records in Custer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 73.9°F (2004) | 3.9°F (1962) | 0.87 in (1931) |
| April 2 | 73.9°F (2004) | -8.0°F (1975) | 1.20 in (1918) |
| April 3 | 71.1°F (1943) | -4.0°F (2020) | 0.72 in (1986) |
| April 4 | 71.1°F (1992) | -2.0°F (1945) | 0.67 in (1997) |
| April 5 | 72.0°F (1991) | 8.1°F (2023) | 0.35 in (2018) |
| April 6 | 72.0°F (1991) | 6.1°F (1997) | 1.16 in (2024) |
| April 7 | 71.1°F (1959) | -2.0°F (1997) | 0.70 in (1919) |
| April 8 | 73.0°F (1988) | 5.0°F (2007) | 2.03 in (1975) |
| April 9 | 75.0°F (2005) | 1.9°F (1961) | 1.25 in (1943) |
| April 10 | 75.9°F (1977) | 3.9°F (1959) | 3.53 in (1943) |
| April 11 | 75.0°F (1960) | -5.1°F (1953) | 0.73 in (1996) |
| April 12 | 75.9°F (1960) | -5.1°F (1957) | 0.67 in (1977) |
| April 13 | 75.9°F (1976) | 1.9°F (1959) | 1.30 in (1912) |
| April 14 | 73.0°F (2024) | 0.0°F (1986) | 1.21 in (1941) |
| April 15 | 75.0°F (1985) | 10.9°F (2013) | 0.90 in (1927) |
| April 16 | 73.9°F (1988) | 0.0°F (1951) | 0.67 in (2009) |
| April 17 | 75.9°F (1994) | 7.0°F (1961) | 7.10 in (1920) |
| April 18 | 79.0°F (1987) | 7.0°F (1953) | 0.78 in (1942) |
| April 19 | 75.0°F (1980) | -0.9°F (1966) | 2.56 in (2000) |
| April 20 | 78.1°F (1989) | -15.0°F (1966) | 1.25 in (1973) |
| April 21 | 84.0°F (1989) | 1.0°F (1966) | 0.90 in (2005) |
| April 22 | 81.0°F (1989) | 8.1°F (2021) | 1.30 in (2001) |
| April 23 | 78.1°F (2012) | 3.0°F (1963) | 1.20 in (1932) |
| April 24 | 78.1°F (2012) | 15.1°F (1947) | 1.38 in (1932) |
| April 25 | 79.0°F (2012) | 12.9°F (1961) | 0.73 in (1994) |
| April 26 | 78.1°F (1952) | 10.0°F (1994) | 1.20 in (2009) |
| April 27 | 77.0°F (1952) | 12.0°F (1950) | 1.35 in (1976) |
| April 28 | 80.1°F (1987) | 14.0°F (1956) | 1.04 in (1941) |
| April 29 | 79.0°F (1992) | 10.9°F (1958) | 0.94 in (1953) |
| April 30 | 78.1°F (1992) | 9.0°F (1956) | 0.51 in (1978) |