August weather in Montgomery, IL
The average temperature in Montgomery in August is 72.6°F (63.1°F–82.1°F). Average precipitation: 3.86 inches.
August is a summer month in Montgomery, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 19°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 41m. For travel, August is a comfortable month to visit.
Avg High
82.1°F
Avg Low
63.1°F
Precipitation
3.86 in
Daylight
13h 41m
August records in Montgomery
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1988) | 46.0°F (1895) | 1.68 in (1911) |
| August 2 | 100.9°F (1991) | 46.0°F (1927) | 3.20 in (1942) |
| August 3 | 104.0°F (1930) | 45.0°F (1920) | 3.22 in (1935) |
| August 4 | 100.9°F (1916) | 46.0°F (1912) | 1.55 in (1928) |
| August 5 | 100.0°F (1896) | 44.1°F (1912) | 2.72 in (1998) |
| August 6 | 100.0°F (1918) | 44.1°F (1994) | 3.50 in (1924) |
| August 7 | 99.0°F (1918) | 46.0°F (1989) | 1.30 in (2007) |
| August 8 | 102.9°F (1934) | 45.0°F (1904) | 2.10 in (1977) |
| August 9 | 105.1°F (1934) | 45.0°F (1904) | 2.24 in (1978) |
| August 10 | 100.0°F (1896) | 46.9°F (1922) | 1.62 in (1913) |
| August 11 | 98.1°F (1896) | 45.0°F (1904) | 3.01 in (1994) |
| August 12 | 102.0°F (1918) | 45.0°F (1902) | 2.92 in (1908) |
| August 13 | 99.0°F (1936) | 48.0°F (1967) | 1.30 in (1908) |
| August 14 | 98.1°F (1895) | 44.1°F (1964) | 2.00 in (1987) |
| August 15 | 98.1°F (1944) | 46.0°F (1929) | 2.40 in (1987) |
| August 16 | 98.1°F (1895) | 45.0°F (1979) | 2.85 in (1930) |
| August 17 | 98.1°F (1988) | 46.9°F (1976) | 2.61 in (2025) |
| August 18 | 100.0°F (1936) | 44.1°F (1963) | 1.91 in (1954) |
| August 19 | 98.1°F (1983) | 46.0°F (1953) | 2.00 in (2025) |
| August 20 | 97.0°F (1916) | 42.1°F (1897) | 3.43 in (1935) |
| August 21 | 98.1°F (1916) | 39.9°F (1950) | 1.93 in (1920) |
| August 22 | 102.0°F (1936) | 45.0°F (1907) | 2.06 in (1904) |
| August 23 | 98.1°F (1947) | 45.0°F (1904) | 3.35 in (1895) |
| August 24 | 99.0°F (1936) | 44.1°F (1908) | 2.06 in (2007) |
| August 25 | 100.0°F (2023) | 39.9°F (1934) | 2.40 in (1972) |
| August 26 | 95.0°F (1953) | 42.1°F (1934) | 7.12 in (1972) |
| August 27 | 95.0°F (1899) | 44.1°F (1904) | 2.13 in (2012) |
| August 28 | 98.1°F (1984) | 39.9°F (1935) | 2.25 in (1932) |
| August 29 | 96.1°F (1984) | 39.9°F (1965) | 1.80 in (1947) |
| August 30 | 98.1°F (1925) | 39.0°F (1893) | 2.44 in (1975) |
| August 31 | 98.1°F (1953) | 37.0°F (1915) | 1.61 in (2001) |