August weather in Donnellson, IA
The average temperature in Donnellson in August is 74.2°F (63.3°F–85.2°F). Average precipitation: 3.88 inches.
August is a summer month in Donnellson, and is warmer than the annual average of 51.7°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 37m. For travel, August is a comfortable month to visit.
Avg High
85.2°F
Avg Low
63.3°F
Precipitation
3.88 in
Daylight
13h 37m
August records in Donnellson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (2006) | 55.0°F (2025) | 1.53 in (1995) |
| August 2 | 100.0°F (2006) | 55.0°F (2009) | 1.30 in (1956) |
| August 3 | 100.9°F (2011) | 57.9°F (2009) | 2.38 in (1995) |
| August 4 | 96.1°F (2010) | 52.0°F (2017) | 2.45 in (1944) |
| August 5 | 95.0°F (2008) | 54.0°F (2017) | 6.65 in (1970) |
| August 6 | 96.1°F (2007) | 55.9°F (2012) | 3.23 in (1959) |
| August 7 | 95.0°F (2022) | 57.0°F (2017) | 1.65 in (1977) |
| August 8 | 102.0°F (2012) | 54.0°F (2017) | 1.73 in (1939) |
| August 9 | 93.0°F (2010) | 53.1°F (2024) | 1.65 in (2015) |
| August 10 | 95.0°F (2018) | 54.0°F (2024) | 2.41 in (1995) |
| August 11 | 93.9°F (2010) | 54.0°F (2008) | 2.49 in (1945) |
| August 12 | 91.9°F (2007) | 54.0°F (2008) | 2.86 in (2016) |
| August 13 | 97.0°F (2007) | 55.0°F (2017) | 2.00 in (1956) |
| August 14 | 91.9°F (2007) | 50.0°F (2013) | 1.69 in (2010) |
| August 15 | 99.0°F (2007) | 48.9°F (2013) | 1.88 in (1952) |
| August 16 | 100.0°F (2007) | 53.1°F (2013) | 3.68 in (2002) |
| August 17 | 95.0°F (2025) | 52.0°F (2013) | 2.45 in (2009) |
| August 18 | 93.9°F (2025) | 51.1°F (2012) | 2.03 in (1940) |
| August 19 | 93.9°F (2025) | 48.9°F (2012) | 1.44 in (1988) |
| August 20 | 93.9°F (2011) | 54.0°F (2012) | 1.56 in (2009) |
| August 21 | 91.9°F (2011) | 55.0°F (2012) | 1.49 in (1975) |
| August 22 | 93.0°F (2007) | 53.1°F (2024) | 1.80 in (1974) |
| August 23 | 95.0°F (2012) | 54.0°F (2009) | 2.50 in (1979) |
| August 24 | 98.1°F (2011) | 52.0°F (2015) | 4.52 in (2007) |
| August 25 | 99.0°F (2011) | 50.0°F (2025) | 1.32 in (2004) |
| August 26 | 95.0°F (2013) | 50.0°F (2025) | 2.64 in (1944) |
| August 27 | 97.0°F (2013) | 51.1°F (2015) | 3.57 in (2004) |
| August 28 | 99.0°F (2013) | 55.9°F (2008) | 3.01 in (2009) |
| August 29 | 100.0°F (2013) | 55.9°F (2009) | 2.27 in (2018) |
| August 30 | 98.1°F (2013) | 46.9°F (2009) | 1.85 in (1982) |
| August 31 | 102.0°F (2013) | 46.0°F (2009) | 2.38 in (1980) |