April weather in Thomson, IL
The average temperature in Thomson in April is 49.6°F (39.8°F–59.4°F). Average precipitation: 3.39 inches.
April is a spring month in Thomson, and is cooler than the annual average of 49.9°F. Daily temperatures swing about 19.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 9m. For travel, April is a comfortable month to visit.
Avg High
59.4°F
Avg Low
39.8°F
Precipitation
3.39 in
Daylight
13h 9m
April records in Thomson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 80.1°F (1981) | 19.9°F (2001) | 1.27 in (1998) |
| April 2 | 82.9°F (2010) | 17.1°F (1971) | 1.64 in (1983) |
| April 3 | 82.0°F (1981) | 18.0°F (1954) | 1.63 in (2024) |
| April 4 | 78.1°F (1942) | 19.0°F (1975) | 0.74 in (1968) |
| April 5 | 80.1°F (2005) | 19.0°F (1995) | 1.43 in (1947) |
| April 6 | 79.0°F (1988) | 18.0°F (1979) | 1.32 in (1958) |
| April 7 | 82.9°F (1991) | 12.9°F (1982) | 0.95 in (1943) |
| April 8 | 75.9°F (1991) | 16.0°F (1982) | 1.04 in (1999) |
| April 9 | 82.0°F (1991) | 18.0°F (2018) | 1.50 in (1998) |
| April 10 | 77.0°F (1945) | 24.1°F (1997) | 1.20 in (2026) |
| April 11 | 82.0°F (2005) | 23.0°F (1973) | 2.85 in (2021) |
| April 12 | 79.0°F (1941) | 21.9°F (1940) | 0.84 in (1951) |
| April 13 | 80.1°F (2023) | 21.9°F (1950) | 1.06 in (1970) |
| April 14 | 84.0°F (2006) | 25.0°F (1943) | 1.12 in (1974) |
| April 15 | 86.0°F (2003) | 25.0°F (1943) | 3.58 in (2012) |
| April 16 | 87.1°F (2002) | 21.9°F (1961) | 1.83 in (2017) |
| April 17 | 88.0°F (2002) | 24.1°F (2001) | 1.32 in (1960) |
| April 18 | 84.0°F (2026) | 28.0°F (1953) | 3.00 in (2013) |
| April 19 | 88.0°F (2002) | 26.1°F (2001) | 0.65 in (1963) |
| April 20 | 88.0°F (1985) | 30.0°F (1953) | 1.53 in (1947) |
| April 21 | 88.0°F (1985) | 30.0°F (1943) | 1.91 in (1973) |
| April 22 | 87.1°F (1985) | 28.9°F (2000) | 1.50 in (1999) |
| April 23 | 91.0°F (1980) | 25.0°F (2001) | 1.07 in (2022) |
| April 24 | 87.1°F (1990) | 24.1°F (2015) | 1.79 in (1955) |
| April 25 | 84.0°F (1990) | 30.0°F (2000) | 1.97 in (1950) |
| April 26 | 89.1°F (1986) | 30.9°F (2000) | 0.76 in (2008) |
| April 27 | 87.1°F (1986) | 30.9°F (1946) | 1.50 in (1975) |
| April 28 | 89.1°F (1970) | 33.1°F (1950) | 2.39 in (1959) |
| April 29 | 86.0°F (1942) | 27.0°F (2001) | 1.77 in (2019) |
| April 30 | 88.0°F (1942) | 33.1°F (1956) | 1.10 in (1966) |