August weather in Charter Oak, IA
The average temperature in Charter Oak in August is 70.3°F (59.0°F–81.6°F). Average precipitation: 3.83 inches.
August is a summer month in Charter Oak, and is warmer than the annual average of 47.2°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 42m. For travel, August is a comfortable month to visit.
Avg High
81.6°F
Avg Low
59.0°F
Precipitation
3.83 in
Daylight
13h 42m
August records in Charter Oak
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (2006) | 50.0°F (1977) | 4.15 in (1944) |
| August 2 | 99.0°F (2012) | 48.9°F (2002) | 1.41 in (1939) |
| August 3 | 100.9°F (1941) | 48.9°F (2002) | 1.80 in (1994) |
| August 4 | 99.0°F (1947) | 45.0°F (1978) | 1.53 in (2002) |
| August 5 | 100.0°F (1947) | 46.0°F (1948) | 3.56 in (1996) |
| August 6 | 97.0°F (1984) | 48.0°F (1990) | 1.96 in (2014) |
| August 7 | 102.0°F (1988) | 44.1°F (1989) | 1.37 in (1998) |
| August 8 | 99.0°F (1938) | 48.0°F (1989) | 1.34 in (1991) |
| August 9 | 99.0°F (1947) | 46.0°F (1939) | 1.96 in (1980) |
| August 10 | 99.0°F (1941) | 43.0°F (2024) | 1.22 in (2006) |
| August 11 | 98.1°F (1988) | 44.1°F (2024) | 2.20 in (2005) |
| August 12 | 95.0°F (1957) | 44.1°F (1964) | 1.85 in (2016) |
| August 13 | 98.1°F (1938) | 39.9°F (2004) | 1.50 in (1951) |
| August 14 | 102.0°F (1988) | 41.0°F (2004) | 1.34 in (1951) |
| August 15 | 104.0°F (1988) | 42.1°F (2004) | 2.10 in (1978) |
| August 16 | 102.0°F (1988) | 48.0°F (1942) | 2.23 in (2017) |
| August 17 | 104.0°F (1988) | 42.1°F (2012) | 2.11 in (1941) |
| August 18 | 97.0°F (1947) | 42.1°F (2012) | 1.18 in (1999) |
| August 19 | 98.1°F (2003) | 41.0°F (2004) | 1.72 in (2011) |
| August 20 | 98.1°F (2003) | 36.0°F (1950) | 2.34 in (2018) |
| August 21 | 100.0°F (1955) | 44.1°F (1939) | 2.94 in (2017) |
| August 22 | 96.1°F (2023) | 46.9°F (1945) | 4.06 in (1988) |
| August 23 | 104.0°F (1938) | 45.0°F (1966) | 2.02 in (2007) |
| August 24 | 99.0°F (2023) | 46.0°F (2015) | 3.20 in (1946) |
| August 25 | 98.1°F (1955) | 43.0°F (2015) | 2.39 in (1992) |
| August 26 | 100.0°F (1955) | 43.0°F (2015) | 1.50 in (1979) |
| August 27 | 102.0°F (1955) | 42.1°F (1971) | 1.05 in (1957) |
| August 28 | 99.0°F (1984) | 37.0°F (1986) | 1.43 in (2015) |
| August 29 | 98.1°F (1945) | 39.0°F (1946) | 1.28 in (1985) |
| August 30 | 98.1°F (2000) | 41.0°F (1946) | 3.06 in (1993) |
| August 31 | 96.1°F (2012) | 39.0°F (2009) | 1.43 in (2021) |