April weather in South Wilmington, IL
The average temperature in South Wilmington in April is 48.8°F (36.9°F–60.8°F). Average precipitation: 3.54 inches. Average snowfall is 0.6 inches.
April is a spring month in South Wilmington, and is cooler than the annual average of 49.3°F. Daily temperatures swing about 23.9°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 7m. For travel, April is cool.
Avg High
60.8°F
Avg Low
36.9°F
Precipitation
3.54 in
Snow
0.6 in
April records in South Wilmington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 78.1°F (2010) | 19.9°F (2011) | 1.37 in (2023) |
| April 2 | 82.0°F (2010) | 14.0°F (2018) | 0.75 in (2002) |
| April 3 | 80.1°F (2010) | 15.1°F (2018) | 0.75 in (2025) |
| April 4 | 84.0°F (2012) | 21.0°F (2013) | 3.30 in (2026) |
| April 5 | 78.1°F (2005) | 15.1°F (1995) | 1.00 in (2003) |
| April 6 | 81.0°F (1991) | 19.9°F (1996) | 0.75 in (2022) |
| April 7 | 81.0°F (1991) | 16.0°F (2018) | 0.40 in (2003) |
| April 8 | 81.0°F (2001) | 15.1°F (1996) | 0.95 in (2010) |
| April 9 | 82.0°F (2001) | 15.1°F (1997) | 1.15 in (1995) |
| April 10 | 80.1°F (2001) | 21.0°F (1997) | 1.80 in (1995) |
| April 11 | 84.9°F (2011) | 26.1°F (2012) | 1.30 in (2013) |
| April 12 | 80.1°F (1996) | 24.1°F (2009) | 1.55 in (1994) |
| April 13 | 81.0°F (1996) | 26.1°F (2012) | 0.42 in (1991) |
| April 14 | 84.0°F (2006) | 23.0°F (1997) | 1.46 in (1991) |
| April 15 | 84.0°F (2003) | 24.1°F (2020) | 0.65 in (1993) |
| April 16 | 86.0°F (2003) | 21.9°F (2020) | 1.71 in (1999) |
| April 17 | 89.1°F (2002) | 25.0°F (2018) | 1.05 in (2000) |
| April 18 | 86.0°F (2004) | 25.0°F (1997) | 2.70 in (2013) |
| April 19 | 89.1°F (2002) | 28.9°F (2022) | 0.97 in (2013) |
| April 20 | 82.9°F (2023) | 24.1°F (2018) | 0.95 in (2011) |
| April 21 | 80.1°F (2023) | 28.9°F (2021) | 0.95 in (2004) |
| April 22 | 79.0°F (2001) | 28.0°F (2021) | 0.99 in (1996) |
| April 23 | 82.9°F (2007) | 28.0°F (2003) | 0.90 in (2011) |
| April 24 | 84.9°F (2022) | 26.1°F (2015) | 0.47 in (2010) |
| April 25 | 82.9°F (1994) | 28.9°F (2024) | 1.85 in (2007) |
| April 26 | 84.9°F (1994) | 28.0°F (2023) | 1.97 in (2020) |
| April 27 | 87.1°F (1994) | 28.0°F (2023) | 0.90 in (1995) |
| April 28 | 86.0°F (2021) | 28.9°F (1992) | 1.33 in (2002) |
| April 29 | 84.9°F (2025) | 24.1°F (2018) | 1.10 in (2021) |
| April 30 | 81.0°F (2007) | 30.9°F (1999) | 1.62 in (2017) |