August weather in Belknap, IL
The average temperature in Belknap in August is 77.9°F (67.2°F–88.6°F). Average precipitation: 3.03 inches.
August is a summer month in Belknap, and is warmer than the annual average of 57.9°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 13h 26m. For travel, August is hot.
Avg High
88.6°F
Avg Low
67.2°F
Precipitation
3.03 in
Daylight
13h 26m
August records in Belknap
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1999) | 54.0°F (1925) | 2.60 in (1934) |
| August 2 | 100.0°F (2012) | 61.0°F (1996) | 1.17 in (1926) |
| August 3 | 98.1°F (2011) | 57.0°F (1925) | 2.33 in (1946) |
| August 4 | 102.0°F (2011) | 57.0°F (1925) | 1.14 in (1946) |
| August 5 | 100.9°F (2010) | 53.1°F (2017) | 2.32 in (1995) |
| August 6 | 100.0°F (2002) | 52.0°F (2017) | 2.10 in (1998) |
| August 7 | 96.1°F (1925) | 57.0°F (2004) | 1.80 in (1940) |
| August 8 | 96.1°F (1928) | 57.0°F (2004) | 1.10 in (1998) |
| August 9 | 97.0°F (1928) | 57.9°F (1997) | 1.30 in (2014) |
| August 10 | 96.1°F (1928) | 59.0°F (2012) | 1.75 in (2001) |
| August 11 | 100.0°F (2010) | 57.9°F (2012) | 1.55 in (2020) |
| August 12 | 100.0°F (1925) | 55.0°F (2004) | 1.20 in (1926) |
| August 13 | 100.9°F (2010) | 50.0°F (2000) | 1.87 in (1935) |
| August 14 | 97.0°F (2010) | 51.1°F (2004) | 2.30 in (2023) |
| August 15 | 98.1°F (2007) | 52.0°F (2004) | 1.55 in (2005) |
| August 16 | 102.0°F (2007) | 54.0°F (2004) | 2.25 in (2024) |
| August 17 | 100.0°F (2007) | 54.0°F (2004) | 1.80 in (1923) |
| August 18 | 102.9°F (1925) | 57.9°F (2004) | 2.13 in (1930) |
| August 19 | 104.0°F (1925) | 57.9°F (2012) | 2.10 in (1941) |
| August 20 | 98.1°F (2019) | 54.0°F (1927) | 0.74 in (2009) |
| August 21 | 97.0°F (2005) | 53.1°F (1927) | 0.57 in (1928) |
| August 22 | 97.0°F (2005) | 55.9°F (1927) | 2.18 in (1923) |
| August 23 | 97.0°F (2007) | 52.0°F (1923) | 4.33 in (1942) |
| August 24 | 97.0°F (1925) | 52.0°F (1927) | 0.93 in (1992) |
| August 25 | 96.1°F (1925) | 51.1°F (1927) | 0.60 in (2004) |
| August 26 | 99.0°F (2023) | 52.0°F (1927) | 1.19 in (1932) |
| August 27 | 100.0°F (1925) | 52.0°F (1927) | 0.60 in (1947) |
| August 28 | 99.0°F (1925) | 55.9°F (1927) | 1.65 in (1992) |
| August 29 | 100.0°F (1925) | 59.0°F (1927) | 0.85 in (2020) |
| August 30 | 100.0°F (2000) | 60.1°F (1924) | 2.58 in (2003) |
| August 31 | 97.0°F (1925) | 54.0°F (2009) | 1.76 in (2005) |