August weather in Grand Mound, IA
The average temperature in Grand Mound in August is °F (°F–°F). Average precipitation: 4.49 inches.
August is a summer month in Grand Mound, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 13h 41m.
Avg High
°F
Avg Low
°F
Precipitation
4.49 in
Daylight
13h 41m
August records in Grand Mound
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 82.9°F (1979) | 64.0°F (1979) | 1.84 in (1957) |
| August 2 | 77.0°F (1979) | 59.0°F (1979) | 0.89 in (1967) |
| August 3 | 82.0°F (1979) | 64.0°F (1979) | 1.71 in (1967) |
| August 4 | 87.1°F (1979) | 70.0°F (1979) | 2.31 in (1989) |
| August 5 | 88.0°F (1979) | 72.0°F (1979) | 1.82 in (2016) |
| August 6 | 91.9°F (1979) | 69.1°F (1979) | 1.47 in (1955) |
| August 7 | 87.1°F (1979) | 72.0°F (1979) | 1.79 in (1967) |
| August 8 | 93.0°F (1979) | 72.0°F (1979) | 2.68 in (1995) |
| August 9 | 84.0°F (1979) | 68.0°F (1979) | 2.82 in (1967) |
| August 10 | 88.0°F (1979) | 69.1°F (1979) | 3.71 in (1993) |
| August 11 | 80.1°F (1979) | 55.9°F (1979) | 1.36 in (2015) |
| August 12 | 73.0°F (1979) | 46.9°F (1979) | 4.25 in (2016) |
| August 13 | 75.0°F (1979) | 50.0°F (1979) | 2.04 in (1956) |
| August 14 | 73.9°F (1979) | 57.9°F (1979) | 1.84 in (2010) |
| August 15 | 68.0°F (1979) | 48.0°F (1979) | 4.43 in (1981) |
| August 16 | 70.0°F (1979) | 55.0°F (1979) | 1.38 in (1995) |
| August 17 | 73.9°F (1979) | 59.0°F (1979) | 2.47 in (1997) |
| August 18 | 88.0°F (1979) | 70.0°F (1979) | 2.13 in (1979) |
| August 19 | 87.1°F (1979) | 70.0°F (1979) | 1.50 in (2015) |
| August 20 | 82.0°F (1979) | 64.9°F (1979) | 2.28 in (1979) |
| August 21 | 80.1°F (1979) | 64.9°F (1979) | 2.33 in (1987) |
| August 22 | 80.1°F (1979) | 64.0°F (1979) | 0.70 in (1979) |
| August 23 | 82.0°F (1979) | 64.9°F (1979) | 2.05 in (2020) |
| August 24 | 77.0°F (1979) | 52.0°F (1979) | 2.89 in (2007) |
| August 25 | 77.0°F (1979) | 57.0°F (1979) | 1.30 in (1990) |
| August 26 | 82.9°F (1979) | 62.1°F (1979) | 4.08 in (1987) |
| August 27 | 82.0°F (1979) | 66.0°F (1979) | 3.69 in (2009) |
| August 28 | 77.0°F (1979) | 63.0°F (1979) | 1.85 in (1957) |
| August 29 | 80.1°F (1979) | 66.0°F (1979) | 3.40 in (2018) |
| August 30 | 84.0°F (1979) | 63.0°F (1979) | 2.10 in (2024) |
| August 31 | 87.1°F (1979) | 62.1°F (1979) | 0.87 in (1980) |