August weather in Stanley, IA
The average temperature in Stanley in August is 68.1°F (56.6°F–79.5°F). Average precipitation: 3.98 inches.
August is a summer month in Stanley, and is warmer than the annual average of 45.4°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Daylight averages about 13h 44m. For travel, August is one of the best months of the year to visit.
Avg High
79.5°F
Avg Low
56.6°F
Precipitation
3.98 in
Daylight
13h 44m
August records in Stanley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 91.9°F (2006) | 51.1°F (2019) | 0.34 in (2008) |
| August 2 | 93.0°F (2012) | 45.0°F (2009) | 0.30 in (2006) |
| August 3 | 91.9°F (2011) | 46.0°F (2009) | 0.16 in (2010) |
| August 4 | 91.9°F (2012) | 46.0°F (2020) | 0.75 in (2017) |
| August 5 | 89.1°F (2008) | 46.0°F (2020) | 0.94 in (2016) |
| August 6 | 89.1°F (2024) | 45.0°F (2012) | 4.78 in (2018) |
| August 7 | 90.0°F (2022) | 45.0°F (2012) | 3.54 in (2022) |
| August 8 | 90.0°F (2012) | 46.9°F (2017) | 0.97 in (2009) |
| August 9 | 89.1°F (2020) | 46.9°F (2017) | 1.57 in (2021) |
| August 10 | 87.1°F (2010) | 45.0°F (2024) | 1.28 in (2025) |
| August 11 | 90.0°F (2021) | 46.0°F (2024) | 1.14 in (2010) |
| August 12 | 89.1°F (2010) | 48.0°F (2017) | 0.71 in (2016) |
| August 13 | 91.0°F (2010) | 46.9°F (2014) | 0.42 in (2019) |
| August 14 | 87.1°F (2007) | 45.0°F (2013) | 0.38 in (2011) |
| August 15 | 89.1°F (2015) | 45.0°F (2013) | 0.85 in (2024) |
| August 16 | 89.1°F (2015) | 48.0°F (2013) | 0.85 in (2009) |
| August 17 | 89.1°F (2025) | 46.0°F (2012) | 2.12 in (2018) |
| August 18 | 86.0°F (2025) | 43.0°F (2012) | 0.89 in (2025) |
| August 19 | 88.0°F (2016) | 45.0°F (2012) | 1.45 in (2015) |
| August 20 | 89.1°F (2023) | 46.9°F (2012) | 3.03 in (2007) |
| August 21 | 91.9°F (2023) | 43.0°F (2012) | 1.22 in (2021) |
| August 22 | 89.1°F (2023) | 43.0°F (2012) | 0.62 in (2013) |
| August 23 | 93.0°F (2023) | 44.1°F (2017) | 1.17 in (2014) |
| August 24 | 102.0°F (2023) | 46.0°F (2009) | 0.56 in (2011) |
| August 25 | 96.1°F (2023) | 46.9°F (2008) | 0.95 in (2021) |
| August 26 | 93.9°F (2020) | 42.1°F (2015) | 0.89 in (2009) |
| August 27 | 96.1°F (2024) | 42.1°F (2015) | 0.69 in (2007) |
| August 28 | 93.0°F (2013) | 48.0°F (2025) | 0.54 in (2022) |
| August 29 | 91.9°F (2020) | 46.9°F (2019) | 2.52 in (2015) |
| August 30 | 90.0°F (2012) | 46.9°F (2020) | 1.06 in (2024) |
| August 31 | 93.0°F (2013) | 39.9°F (2009) | 1.81 in (2011) |