August weather in Annawan, IL
The average temperature in Annawan in August is 71.4°F (60.7°F–82.2°F). Average precipitation: 3.86 inches.
August is a summer month in Annawan, and is warmer than the annual average of 49.6°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 40m. For travel, August is a comfortable month to visit.
Avg High
82.2°F
Avg Low
60.7°F
Precipitation
3.86 in
Daylight
13h 40m
August records in Annawan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1988) | 48.0°F (1947) | 1.10 in (1956) |
| August 2 | 100.9°F (1988) | 48.9°F (1985) | 0.59 in (1946) |
| August 3 | 99.0°F (1947) | 45.0°F (1976) | 3.00 in (1943) |
| August 4 | 99.0°F (1988) | 46.0°F (1972) | 1.80 in (1987) |
| August 5 | 98.1°F (1947) | 46.0°F (1978) | 2.06 in (1972) |
| August 6 | 99.0°F (1947) | 45.0°F (1994) | 1.60 in (1981) |
| August 7 | 93.9°F (1949) | 46.9°F (1975) | 1.75 in (2023) |
| August 8 | 96.1°F (1988) | 44.1°F (1976) | 1.16 in (1965) |
| August 9 | 102.0°F (1988) | 48.9°F (1976) | 3.05 in (1993) |
| August 10 | 100.9°F (1988) | 51.1°F (1962) | 3.25 in (2010) |
| August 11 | 98.1°F (1941) | 46.0°F (1982) | 2.21 in (1997) |
| August 12 | 95.0°F (1988) | 45.0°F (1979) | 1.14 in (1999) |
| August 13 | 97.0°F (1944) | 48.0°F (1986) | 1.19 in (2016) |
| August 14 | 98.1°F (1944) | 43.0°F (2004) | 1.95 in (2010) |
| August 15 | 95.0°F (1944) | 44.1°F (2004) | 3.05 in (1981) |
| August 16 | 100.0°F (1988) | 46.0°F (1976) | 0.90 in (1970) |
| August 17 | 100.0°F (1988) | 48.0°F (2004) | 2.82 in (1997) |
| August 18 | 100.9°F (1983) | 46.9°F (1953) | 2.73 in (1979) |
| August 19 | 100.9°F (1988) | 46.9°F (2012) | 1.61 in (1960) |
| August 20 | 100.9°F (1983) | 43.0°F (1950) | 1.74 in (1979) |
| August 21 | 100.0°F (1983) | 44.1°F (1950) | 3.40 in (1987) |
| August 22 | 99.0°F (1947) | 46.9°F (1949) | 1.12 in (1944) |
| August 23 | 100.9°F (1947) | 45.0°F (1952) | 1.56 in (2002) |
| August 24 | 100.9°F (1947) | 44.1°F (1942) | 1.93 in (2007) |
| August 25 | 96.1°F (2023) | 41.0°F (1958) | 0.88 in (1951) |
| August 26 | 96.1°F (1955) | 45.0°F (1945) | 2.26 in (1987) |
| August 27 | 98.1°F (1955) | 46.0°F (1967) | 2.40 in (2012) |
| August 28 | 97.0°F (1953) | 41.0°F (1986) | 1.28 in (1957) |
| August 29 | 98.1°F (1948) | 37.9°F (1986) | 3.05 in (1956) |
| August 30 | 99.0°F (1945) | 37.9°F (1986) | 2.10 in (1980) |
| August 31 | 102.9°F (1953) | 43.0°F (2009) | 1.60 in (1980) |