August weather in Promise City, IA
The average temperature in Promise City in August is 72.5°F (62.0°F–82.9°F). Average precipitation: 4.86 inches.
August is a summer month in Promise City, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 20.9°F between overnight low and afternoon high. Daylight averages about 13h 38m. For travel, August is a comfortable month to visit.
Avg High
82.9°F
Avg Low
62.0°F
Precipitation
4.86 in
Daylight
13h 38m
August records in Promise City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (2006) | 54.0°F (1913) | 0.75 in (1903) |
| August 2 | 98.1°F (1916) | 48.9°F (1907) | 1.93 in (2023) |
| August 3 | 100.9°F (2011) | 51.1°F (1907) | 1.41 in (2023) |
| August 4 | 108.0°F (1918) | 46.0°F (1912) | 2.95 in (2004) |
| August 5 | 105.1°F (1918) | 48.0°F (2017) | 0.95 in (1902) |
| August 6 | 100.9°F (1918) | 51.1°F (1910) | 2.10 in (2014) |
| August 7 | 100.9°F (1913) | 52.0°F (1903) | 1.82 in (1911) |
| August 8 | 105.1°F (1913) | 46.9°F (1904) | 4.40 in (2007) |
| August 9 | 104.0°F (1913) | 52.0°F (2024) | 0.78 in (2015) |
| August 10 | 100.9°F (1911) | 48.9°F (1903) | 1.56 in (1949) |
| August 11 | 97.0°F (1905) | 46.9°F (1902) | 1.25 in (1949) |
| August 12 | 96.1°F (1909) | 46.9°F (2004) | 1.77 in (1908) |
| August 13 | 99.0°F (1913) | 48.0°F (2004) | 1.37 in (2007) |
| August 14 | 102.0°F (1913) | 51.1°F (2004) | 3.74 in (1905) |
| August 15 | 102.0°F (1913) | 50.0°F (2004) | 1.27 in (2024) |
| August 16 | 100.0°F (1911) | 51.1°F (2004) | 3.56 in (2014) |
| August 17 | 98.1°F (1906) | 51.1°F (2012) | 1.26 in (2009) |
| August 18 | 99.0°F (1913) | 50.0°F (2012) | 1.80 in (1918) |
| August 19 | 99.0°F (2003) | 48.9°F (1908) | 2.72 in (2002) |
| August 20 | 99.0°F (1913) | 50.0°F (1903) | 1.06 in (2018) |
| August 21 | 99.0°F (2003) | 50.0°F (2004) | 0.77 in (1904) |
| August 22 | 95.0°F (2003) | 50.0°F (1904) | 2.57 in (2017) |
| August 23 | 98.1°F (1910) | 48.9°F (1904) | 1.50 in (2007) |
| August 24 | 95.0°F (1909) | 48.9°F (2015) | 6.85 in (2007) |
| August 25 | 100.9°F (1912) | 48.0°F (1915) | 1.27 in (2006) |
| August 26 | 100.9°F (2003) | 44.1°F (1910) | 6.70 in (1902) |
| August 27 | 102.0°F (1913) | 42.1°F (1906) | 9.25 in (1903) |
| August 28 | 96.1°F (1912) | 48.9°F (1906) | 1.68 in (2004) |
| August 29 | 96.1°F (2013) | 45.0°F (1909) | 2.46 in (2018) |
| August 30 | 97.0°F (1913) | 39.0°F (1915) | 0.98 in (2014) |
| August 31 | 105.1°F (1913) | 41.0°F (1915) | 1.30 in (2021) |