April weather in Mount Vernon, SD
The average temperature in Mount Vernon in April is 46.9°F (35.1°F–58.7°F). Average precipitation: 2.07 inches.
April is a spring month in Mount Vernon, and is cooler than the annual average of 47.7°F. Daily temperatures swing about 23.6°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
58.7°F
Avg Low
35.1°F
Precipitation
2.07 in
Daylight
13h 13m
April records in Mount Vernon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 91.9°F (2012) | 16.2°F (2013) | 0.59 in (2024) |
| April 2 | 80.1°F (2021) | 16.2°F (2009) | 0.26 in (2025) |
| April 3 | 78.1°F (2016) | 10.2°F (2018) | 0.24 in (2017) |
| April 4 | 84.9°F (2021) | 9.1°F (2018) | 0.23 in (2025) |
| April 5 | 91.0°F (2021) | 16.2°F (2007) | 0.50 in (2019) |
| April 6 | 73.9°F (2020) | 13.1°F (2018) | 1.50 in (2006) |
| April 7 | 73.9°F (2020) | 12.2°F (2018) | 0.69 in (2006) |
| April 8 | 82.0°F (2017) | 12.9°F (2003) | 0.18 in (2018) |
| April 9 | 84.9°F (2014) | 19.2°F (2013) | 0.68 in (2013) |
| April 10 | 84.9°F (2006) | 21.0°F (2026) | 1.04 in (2017) |
| April 11 | 90.0°F (2023) | 21.9°F (2004) | 1.45 in (2019) |
| April 12 | 89.1°F (2023) | 18.0°F (2004) | 0.47 in (2020) |
| April 13 | 91.9°F (2024) | 18.1°F (2008) | 0.41 in (2018) |
| April 14 | 91.0°F (2003) | 18.1°F (2019) | 0.65 in (2018) |
| April 15 | 84.0°F (2003) | 18.1°F (2014) | 1.65 in (2012) |
| April 16 | 89.1°F (2026) | 17.2°F (2022) | 1.26 in (2024) |
| April 17 | 81.0°F (2005) | 20.1°F (2014) | 0.46 in (2016) |
| April 18 | 77.0°F (2004) | 21.0°F (2026) | 0.59 in (2016) |
| April 19 | 79.0°F (2005) | 21.2°F (2018) | 1.24 in (2012) |
| April 20 | 84.0°F (2019) | 19.2°F (2013) | 0.73 in (2004) |
| April 21 | 82.0°F (2007) | 20.1°F (2021) | 1.30 in (2005) |
| April 22 | 91.0°F (2022) | 24.3°F (2015) | 2.10 in (2001) |
| April 23 | 91.9°F (2009) | 12.2°F (2013) | 0.54 in (2010) |
| April 24 | 88.0°F (2012) | 26.1°F (2005) | 0.85 in (2015) |
| April 25 | 81.0°F (2012) | 25.2°F (2013) | 0.44 in (2008) |
| April 26 | 79.0°F (2001) | 21.2°F (2022) | 1.04 in (2024) |
| April 27 | 82.0°F (2004) | 28.2°F (2008) | 2.32 in (2016) |
| April 28 | 90.0°F (2004) | 24.3°F (2008) | 0.71 in (2025) |
| April 29 | 88.0°F (2007) | 26.1°F (2005) | 0.44 in (2022) |
| April 30 | 86.0°F (2018) | 28.0°F (2005) | 0.87 in (2016) |