April weather in Flat Rock, IL
The average temperature in Flat Rock in April is 55.6°F (44.5°F–66.6°F). Average precipitation: 5.06 inches.
April is a spring month in Flat Rock, and is warmer than the annual average of 55.1°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 2m. For travel, April is a wet month.
Avg High
66.6°F
Avg Low
44.5°F
Precipitation
5.06 in
Daylight
13h 2m
April records in Flat Rock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 84.0°F (1963) | 18.0°F (2001) | 2.05 in (1917) |
| April 2 | 84.0°F (1940) | 21.9°F (1899) | 1.41 in (2014) |
| April 3 | 86.0°F (1946) | 23.0°F (1943) | 2.60 in (1957) |
| April 4 | 87.1°F (1929) | 21.9°F (1899) | 1.33 in (2014) |
| April 5 | 84.9°F (1967) | 21.9°F (1944) | 1.41 in (2009) |
| April 6 | 84.9°F (1929) | 23.0°F (1982) | 1.70 in (1926) |
| April 7 | 86.0°F (2001) | 21.9°F (1982) | 1.60 in (2000) |
| April 8 | 87.1°F (2001) | 21.0°F (1972) | 1.50 in (1897) |
| April 9 | 87.1°F (2001) | 21.9°F (1997) | 2.70 in (1994) |
| April 10 | 88.0°F (1930) | 21.9°F (1960) | 1.83 in (2009) |
| April 11 | 91.0°F (1930) | 24.1°F (2007) | 2.14 in (1944) |
| April 12 | 89.1°F (1930) | 21.0°F (1940) | 1.95 in (1903) |
| April 13 | 88.0°F (1941) | 21.0°F (1939) | 1.44 in (1923) |
| April 14 | 87.1°F (2003) | 24.1°F (1950) | 1.82 in (1922) |
| April 15 | 89.1°F (2006) | 25.0°F (1907) | 1.10 in (1933) |
| April 16 | 88.0°F (1896) | 25.0°F (1962) | 2.11 in (1972) |
| April 17 | 88.0°F (1977) | 26.1°F (1904) | 4.04 in (2006) |
| April 18 | 91.9°F (1958) | 27.0°F (1923) | 2.57 in (1969) |
| April 19 | 87.1°F (1987) | 23.0°F (1983) | 2.05 in (2013) |
| April 20 | 91.9°F (1987) | 25.0°F (1983) | 1.48 in (1918) |
| April 21 | 95.0°F (1987) | 28.0°F (1907) | 2.55 in (1984) |
| April 22 | 87.1°F (1925) | 28.0°F (1927) | 1.70 in (1944) |
| April 23 | 89.1°F (1925) | 27.0°F (1936) | 1.80 in (1944) |
| April 24 | 91.0°F (1925) | 27.0°F (1910) | 1.63 in (1970) |
| April 25 | 90.0°F (1954) | 28.0°F (1934) | 2.02 in (1947) |
| April 26 | 93.9°F (1989) | 28.0°F (1919) | 1.73 in (2011) |
| April 27 | 87.1°F (1899) | 28.9°F (1946) | 1.15 in (1966) |
| April 28 | 87.1°F (1896) | 28.9°F (1934) | 2.21 in (2009) |
| April 29 | 91.9°F (1987) | 33.1°F (1976) | 2.70 in (1994) |
| April 30 | 89.1°F (1951) | 33.1°F (1969) | 2.00 in (1998) |