August weather in Rantoul, IL
The average temperature in Rantoul in August is 73.7°F (61.6°F–85.9°F). Average precipitation: 3.86 inches.
August is a summer month in Rantoul, and is warmer than the annual average of 52.3°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 36m. For travel, August is a comfortable month to visit.
Avg High
85.9°F
Avg Low
61.6°F
Precipitation
3.86 in
Daylight
13h 36m
August records in Rantoul
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (1988) | 42.1°F (1998) | 1.55 in (1958) |
| August 2 | 102.0°F (1901) | 48.9°F (1998) | 1.58 in (1979) |
| August 3 | 99.0°F (1964) | 43.0°F (1912) | 3.30 in (1943) |
| August 4 | 98.1°F (2010) | 39.9°F (1912) | 1.50 in (1998) |
| August 5 | 98.1°F (2002) | 44.1°F (1912) | 2.66 in (2023) |
| August 6 | 93.9°F (1900) | 46.0°F (1989) | 6.15 in (1977) |
| August 7 | 96.1°F (1901) | 46.0°F (1989) | 3.50 in (2018) |
| August 8 | 98.1°F (1988) | 45.0°F (1904) | 0.95 in (1951) |
| August 9 | 97.0°F (1901) | 46.9°F (1972) | 2.07 in (1969) |
| August 10 | 97.0°F (1980) | 39.9°F (2003) | 2.37 in (1906) |
| August 11 | 98.1°F (1911) | 46.0°F (1965) | 2.49 in (1974) |
| August 12 | 99.0°F (1907) | 46.9°F (2004) | 5.10 in (2021) |
| August 13 | 97.0°F (1909) | 46.9°F (2004) | 1.18 in (1999) |
| August 14 | 99.0°F (2010) | 45.0°F (2004) | 1.08 in (1994) |
| August 15 | 98.1°F (1988) | 46.0°F (2004) | 2.50 in (1975) |
| August 16 | 100.0°F (1988) | 46.0°F (1979) | 2.60 in (2016) |
| August 17 | 102.0°F (1988) | 48.0°F (1979) | 2.66 in (1997) |
| August 18 | 100.0°F (1988) | 50.0°F (1981) | 2.20 in (2015) |
| August 19 | 96.1°F (1899) | 42.1°F (1988) | 1.60 in (2002) |
| August 20 | 102.0°F (1983) | 44.1°F (1897) | 2.19 in (1912) |
| August 21 | 100.0°F (1983) | 46.9°F (1950) | 0.69 in (1979) |
| August 22 | 98.1°F (2003) | 48.9°F (1997) | 3.40 in (2017) |
| August 23 | 98.1°F (1948) | 46.0°F (1902) | 2.55 in (2002) |
| August 24 | 96.1°F (1948) | 48.0°F (1902) | 1.44 in (1911) |
| August 25 | 97.0°F (1948) | 42.1°F (1958) | 1.50 in (1894) |
| August 26 | 96.1°F (1899) | 43.0°F (1910) | 2.07 in (2004) |
| August 27 | 98.1°F (1899) | 46.0°F (1968) | 2.41 in (1992) |
| August 28 | 97.0°F (1990) | 42.1°F (1986) | 2.10 in (1911) |
| August 29 | 97.0°F (1953) | 37.9°F (1986) | 2.22 in (1951) |
| August 30 | 97.0°F (2000) | 43.0°F (1986) | 1.80 in (1985) |
| August 31 | 98.1°F (1953) | 43.0°F (1967) | 2.02 in (2001) |