April weather in Mount Vernon, IL
The average temperature in Mount Vernon in April is 54.5°F (44.1°F–64.9°F). Average precipitation: 4.96 inches.
April is a spring month in Mount Vernon, and is warmer than the annual average of 54.5°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 0m. For travel, April is a comfortable month to visit.
Avg High
64.9°F
Avg Low
44.1°F
Precipitation
4.96 in
Daylight
13h 0m
April records in Mount Vernon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 86.0°F (1940) | 17.1°F (1923) | 1.66 in (1988) |
| April 2 | 84.9°F (1940) | 21.2°F (2021) | 1.15 in (1957) |
| April 3 | 87.1°F (1946) | 19.9°F (1987) | 1.10 in (1989) |
| April 4 | 87.1°F (1934) | 23.0°F (1982) | 3.66 in (2025) |
| April 5 | 84.9°F (1954) | 21.9°F (1944) | 2.23 in (2025) |
| April 6 | 82.9°F (1988) | 23.0°F (1982) | 1.54 in (2009) |
| April 7 | 89.1°F (1919) | 19.0°F (1990) | 1.05 in (1935) |
| April 8 | 86.0°F (1943) | 21.9°F (1972) | 1.65 in (1897) |
| April 9 | 87.1°F (1919) | 21.9°F (2007) | 1.45 in (2024) |
| April 10 | 88.0°F (1930) | 21.9°F (1982) | 2.10 in (1994) |
| April 11 | 91.0°F (1930) | 21.9°F (1989) | 1.87 in (2008) |
| April 12 | 89.1°F (1941) | 21.9°F (1957) | 1.37 in (1966) |
| April 13 | 89.1°F (1941) | 26.1°F (1920) | 2.00 in (1909) |
| April 14 | 84.9°F (1919) | 26.1°F (1950) | 1.61 in (1987) |
| April 15 | 88.0°F (2024) | 26.2°F (2020) | 1.02 in (1922) |
| April 16 | 86.0°F (1896) | 25.0°F (1949) | 3.50 in (1939) |
| April 17 | 87.1°F (1896) | 24.3°F (2018) | 2.05 in (1992) |
| April 18 | 90.0°F (1977) | 26.1°F (2001) | 0.80 in (1969) |
| April 19 | 86.0°F (1938) | 19.9°F (1897) | 2.61 in (2013) |
| April 20 | 87.1°F (1971) | 24.1°F (1983) | 2.57 in (1981) |
| April 21 | 91.0°F (1946) | 27.0°F (1904) | 2.12 in (2016) |
| April 22 | 90.0°F (1946) | 28.0°F (1927) | 1.77 in (1944) |
| April 23 | 88.0°F (1965) | 28.9°F (1927) | 1.93 in (1955) |
| April 24 | 88.0°F (1965) | 27.0°F (1910) | 3.70 in (1975) |
| April 25 | 87.1°F (1915) | 28.0°F (1910) | 2.22 in (1947) |
| April 26 | 89.1°F (1915) | 28.9°F (1919) | 1.69 in (2011) |
| April 27 | 89.1°F (1906) | 30.9°F (1946) | 1.11 in (1994) |
| April 28 | 88.0°F (1901) | 30.0°F (1992) | 2.39 in (2014) |
| April 29 | 90.0°F (1915) | 31.1°F (2018) | 4.79 in (1996) |
| April 30 | 91.0°F (1901) | 29.1°F (2018) | 2.34 in (1998) |