August weather in Clear Lake, IA
The average temperature in Clear Lake in August is 68.9°F (57.6°F–80.2°F). Average precipitation: 3.79 inches.
August is a summer month in Clear Lake, and is warmer than the annual average of 45.6°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
80.2°F
Avg Low
57.6°F
Precipitation
3.79 in
Daylight
13h 46m
August records in Clear Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1988) | 45.0°F (1968) | 1.65 in (2004) |
| August 2 | 98.1°F (1988) | 48.9°F (1950) | 1.42 in (1953) |
| August 3 | 95.0°F (1983) | 45.0°F (1971) | 1.81 in (1953) |
| August 4 | 97.0°F (1989) | 43.0°F (2020) | 2.05 in (2002) |
| August 5 | 93.0°F (1965) | 43.0°F (1994) | 1.30 in (2002) |
| August 6 | 95.0°F (1983) | 46.0°F (2004) | 1.97 in (2022) |
| August 7 | 95.0°F (1988) | 46.0°F (1989) | 2.08 in (2022) |
| August 8 | 95.0°F (1983) | 46.9°F (1989) | 2.05 in (1979) |
| August 9 | 95.0°F (1985) | 46.0°F (1972) | 3.19 in (1980) |
| August 10 | 96.1°F (1983) | 45.0°F (1967) | 3.33 in (1980) |
| August 11 | 93.0°F (1988) | 42.1°F (2012) | 0.92 in (2023) |
| August 12 | 95.0°F (1965) | 44.1°F (1967) | 1.69 in (1987) |
| August 13 | 100.9°F (1965) | 41.0°F (1964) | 1.81 in (1980) |
| August 14 | 97.0°F (1965) | 39.0°F (1964) | 0.87 in (1981) |
| August 15 | 100.0°F (1988) | 39.0°F (1979) | 2.76 in (1977) |
| August 16 | 100.0°F (1983) | 43.0°F (1992) | 1.77 in (1980) |
| August 17 | 100.9°F (1988) | 44.1°F (2012) | 1.11 in (1990) |
| August 18 | 96.1°F (1972) | 42.1°F (1950) | 2.48 in (2025) |
| August 19 | 98.1°F (1983) | 39.9°F (2004) | 4.79 in (2007) |
| August 20 | 96.1°F (1972) | 35.1°F (1950) | 1.15 in (2018) |
| August 21 | 98.1°F (1955) | 36.0°F (2004) | 3.25 in (1979) |
| August 22 | 96.1°F (2023) | 46.0°F (2005) | 6.33 in (1954) |
| August 23 | 100.9°F (2023) | 45.0°F (1987) | 1.84 in (2016) |
| August 24 | 99.0°F (1948) | 45.0°F (1977) | 1.85 in (1990) |
| August 25 | 96.1°F (1948) | 37.9°F (1958) | 1.98 in (1972) |
| August 26 | 96.1°F (1955) | 41.0°F (1964) | 1.58 in (1986) |
| August 27 | 98.1°F (1984) | 42.1°F (1971) | 3.15 in (2021) |
| August 28 | 96.1°F (1984) | 39.0°F (1986) | 3.12 in (1995) |
| August 29 | 97.0°F (2012) | 42.1°F (1988) | 2.20 in (1982) |
| August 30 | 99.0°F (2012) | 41.0°F (1967) | 3.21 in (1962) |
| August 31 | 93.9°F (1948) | 37.9°F (2009) | 1.53 in (1969) |