August weather in Savanna, IL
The average temperature in Savanna in August is 70.7°F (58.1°F–83.3°F). Average precipitation: 3.91 inches.
August is a summer month in Savanna, and is warmer than the annual average of 48.5°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 42m. For travel, August is a comfortable month to visit.
Avg High
83.3°F
Avg Low
58.1°F
Precipitation
3.91 in
Daylight
13h 42m
August records in Savanna
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.0°F (1988) | 43.0°F (1908) | 1.18 in (1921) |
| August 2 | 100.0°F (1987) | 42.1°F (1927) | 2.14 in (1929) |
| August 3 | 100.9°F (1930) | 41.0°F (1912) | 2.00 in (1915) |
| August 4 | 100.0°F (1916) | 39.0°F (1912) | 3.16 in (1989) |
| August 5 | 100.9°F (1918) | 39.9°F (1994) | 1.94 in (2008) |
| August 6 | 99.0°F (1918) | 41.0°F (1910) | 1.75 in (2000) |
| August 7 | 99.0°F (1918) | 37.9°F (1989) | 1.97 in (2022) |
| August 8 | 98.1°F (1914) | 37.0°F (1904) | 2.57 in (2010) |
| August 9 | 99.0°F (1934) | 39.0°F (1989) | 3.95 in (1930) |
| August 10 | 99.0°F (2005) | 44.1°F (1991) | 2.15 in (1913) |
| August 11 | 98.1°F (1941) | 37.9°F (1982) | 5.01 in (1911) |
| August 12 | 100.0°F (1918) | 39.9°F (1982) | 2.76 in (2016) |
| August 13 | 98.1°F (1918) | 41.0°F (1982) | 2.13 in (1985) |
| August 14 | 98.1°F (1936) | 39.9°F (1964) | 2.13 in (1945) |
| August 15 | 99.0°F (1936) | 39.9°F (1979) | 3.52 in (1938) |
| August 16 | 100.0°F (1988) | 39.9°F (1976) | 1.61 in (1938) |
| August 17 | 102.0°F (1988) | 42.1°F (1989) | 1.96 in (1987) |
| August 18 | 102.9°F (1936) | 39.0°F (1989) | 2.06 in (1979) |
| August 19 | 100.0°F (1916) | 39.0°F (1989) | 3.77 in (1924) |
| August 20 | 100.9°F (1916) | 39.0°F (1950) | 2.23 in (1937) |
| August 21 | 100.0°F (1936) | 42.1°F (1950) | 2.10 in (1904) |
| August 22 | 99.0°F (1936) | 42.1°F (1907) | 2.47 in (1924) |
| August 23 | 98.1°F (1947) | 44.1°F (1908) | 2.35 in (1926) |
| August 24 | 99.0°F (1947) | 37.9°F (1908) | 2.48 in (1905) |
| August 25 | 95.0°F (2020) | 33.1°F (1934) | 3.32 in (1998) |
| August 26 | 93.9°F (1953) | 36.0°F (1934) | 2.72 in (1987) |
| August 27 | 95.0°F (2003) | 37.9°F (1915) | 2.07 in (2009) |
| August 28 | 97.0°F (1926) | 32.0°F (1986) | 2.00 in (1932) |
| August 29 | 96.1°F (1984) | 33.1°F (1934) | 2.42 in (2018) |
| August 30 | 98.1°F (1984) | 35.1°F (1915) | 2.78 in (2024) |
| August 31 | 99.0°F (1953) | 35.1°F (1915) | 2.03 in (1956) |