August weather in Irwin, IL
The average temperature in Irwin in August is 73.1°F (63.0°F–83.2°F). Average precipitation: 3.85 inches.
August is a summer month in Irwin, and is warmer than the annual average of 51.2°F. Daily temperatures swing about 20.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 39m. For travel, August is a comfortable month to visit.
Avg High
83.2°F
Avg Low
63.0°F
Precipitation
3.85 in
Daylight
13h 39m
August records in Irwin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1988) | 48.0°F (1990) | 0.56 in (2012) |
| August 2 | 104.0°F (1988) | 51.1°F (1990) | 1.15 in (1994) |
| August 3 | 100.9°F (1988) | 52.0°F (1976) | 1.02 in (2001) |
| August 4 | 98.1°F (1988) | 52.0°F (1978) | 2.81 in (2004) |
| August 5 | 99.0°F (1988) | 48.0°F (1994) | 2.72 in (2008) |
| August 6 | 93.9°F (2018) | 48.0°F (1994) | 2.58 in (2023) |
| August 7 | 93.0°F (1988) | 48.9°F (1990) | 0.91 in (1986) |
| August 8 | 96.1°F (2012) | 46.9°F (1989) | 1.44 in (1982) |
| August 9 | 99.0°F (1988) | 48.9°F (1989) | 1.67 in (1987) |
| August 10 | 95.0°F (1980) | 51.1°F (1994) | 2.81 in (1977) |
| August 11 | 91.9°F (2005) | 48.0°F (1982) | 1.39 in (1949) |
| August 12 | 96.1°F (1988) | 48.0°F (1986) | 1.50 in (1997) |
| August 13 | 96.1°F (1988) | 48.0°F (2004) | 1.31 in (2025) |
| August 14 | 95.0°F (1988) | 50.0°F (1990) | 1.33 in (2005) |
| August 15 | 98.1°F (1988) | 46.9°F (1992) | 1.38 in (1981) |
| August 16 | 100.9°F (1988) | 46.9°F (1979) | 3.08 in (2016) |
| August 17 | 107.1°F (1988) | 48.0°F (1979) | 2.64 in (1997) |
| August 18 | 102.9°F (1988) | 51.1°F (1976) | 1.76 in (2015) |
| August 19 | 102.0°F (1988) | 52.0°F (1982) | 1.95 in (2004) |
| August 20 | 95.0°F (1983) | 48.9°F (1985) | 2.01 in (1979) |
| August 21 | 96.1°F (1983) | 50.0°F (1985) | 1.16 in (2011) |
| August 22 | 96.1°F (2003) | 50.0°F (1994) | 1.36 in (2013) |
| August 23 | 91.9°F (1998) | 48.0°F (1984) | 0.84 in (2001) |
| August 24 | 93.9°F (2023) | 50.0°F (1984) | 0.72 in (2011) |
| August 25 | 95.0°F (2023) | 48.9°F (1986) | 1.21 in (2016) |
| August 26 | 95.0°F (1991) | 50.0°F (1984) | 2.06 in (2004) |
| August 27 | 97.0°F (2003) | 50.0°F (2025) | 1.11 in (1949) |
| August 28 | 96.1°F (2024) | 39.0°F (1986) | 2.80 in (2009) |
| August 29 | 97.0°F (1990) | 39.9°F (1986) | 1.52 in (1977) |
| August 30 | 96.1°F (1984) | 46.9°F (1988) | 1.40 in (1975) |
| August 31 | 98.1°F (1991) | 46.9°F (1986) | 3.30 in (1980) |