April weather in Interior, SD
The average temperature in Interior in April is 48.4°F (34.7°F–62.2°F). Average precipitation: 2.26 inches. Average snowfall is 6.4 inches.
April is a spring month in Interior, and is cooler than the annual average of 50.4°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 13m. For travel, April is cool.
Avg High
62.2°F
Avg Low
34.7°F
Precipitation
2.26 in
Snow
6.4 in
April records in Interior
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 90.0°F (2012) | 8.1°F (2014) | 1.06 in (2022) |
| April 2 | 88.0°F (2012) | 3.0°F (1975) | 0.94 in (2010) |
| April 3 | 80.1°F (1969) | 3.0°F (2020) | 0.50 in (1957) |
| April 4 | 82.9°F (1992) | 12.0°F (2018) | 1.00 in (1986) |
| April 5 | 84.9°F (1991) | 10.9°F (2018) | 0.64 in (1965) |
| April 6 | 82.9°F (1969) | 12.0°F (1979) | 0.33 in (1976) |
| April 7 | 86.0°F (1988) | 12.9°F (1997) | 0.83 in (2024) |
| April 8 | 82.0°F (1988) | 8.1°F (1997) | 0.57 in (1999) |
| April 9 | 89.1°F (1977) | 12.0°F (2013) | 1.22 in (2017) |
| April 10 | 91.0°F (1996) | 10.9°F (1983) | 0.98 in (2017) |
| April 11 | 90.0°F (2023) | 10.9°F (1997) | 1.65 in (1974) |
| April 12 | 90.0°F (2023) | 10.0°F (1959) | 1.30 in (1970) |
| April 13 | 89.1°F (2003) | 16.0°F (2020) | 0.88 in (1967) |
| April 14 | 86.0°F (2003) | 16.0°F (2020) | 0.63 in (1972) |
| April 15 | 89.1°F (1985) | 14.0°F (2018) | 1.38 in (1970) |
| April 16 | 88.0°F (1964) | 14.0°F (2022) | 2.01 in (2016) |
| April 17 | 90.0°F (1985) | 12.9°F (1961) | 0.62 in (1966) |
| April 18 | 91.9°F (1987) | 19.0°F (1966) | 1.30 in (1970) |
| April 19 | 90.0°F (1987) | 21.0°F (1966) | 3.07 in (2000) |
| April 20 | 91.9°F (1980) | 12.0°F (1966) | 1.75 in (1971) |
| April 21 | 93.9°F (1980) | 16.0°F (1959) | 1.66 in (2005) |
| April 22 | 91.9°F (1989) | 21.9°F (1967) | 1.39 in (1968) |
| April 23 | 91.9°F (1989) | 16.0°F (2013) | 1.10 in (2022) |
| April 24 | 90.0°F (1962) | 12.9°F (1983) | 0.92 in (2006) |
| April 25 | 90.0°F (1962) | 25.0°F (1961) | 0.89 in (1986) |
| April 26 | 84.9°F (1962) | 26.1°F (1994) | 1.99 in (2024) |
| April 27 | 88.0°F (1975) | 21.9°F (1956) | 0.92 in (1989) |
| April 28 | 91.0°F (2001) | 0.0°F (1984) | 1.37 in (2014) |
| April 29 | 89.1°F (1987) | 19.0°F (1956) | 1.51 in (1975) |
| April 30 | 93.0°F (1992) | 23.0°F (1966) | 1.40 in (1993) |