August weather in Bismarck, ND
The average temperature in Bismarck in August is 67.8°F (55.6°F–80.1°F). Average precipitation: 2.70 inches.
August is a summer month in Bismarck, and is warmer than the annual average of 42.3°F. Daily temperatures swing about 24.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 1m. For travel, August is a comfortable month to visit.
Avg High
80.1°F
Avg Low
55.6°F
Precipitation
2.70 in
Daylight
14h 1m
August records in Bismarck
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (2007) | 48.0°F (2009) | 2.18 in (2010) |
| August 2 | 90.0°F (2008) | 48.9°F (2009) | 0.19 in (2019) |
| August 3 | 89.1°F (2012) | 53.1°F (2009) | 1.34 in (2010) |
| August 4 | 96.1°F (2018) | 46.0°F (2009) | 0.63 in (2012) |
| August 5 | 88.0°F (2007) | 46.0°F (2012) | 0.14 in (2019) |
| August 6 | 84.9°F (2011) | 46.9°F (2012) | 0.61 in (2011) |
| August 7 | 93.0°F (2012) | 51.1°F (2017) | 0.67 in (2019) |
| August 8 | 91.0°F (2007) | 51.1°F (2017) | 1.21 in (2007) |
| August 9 | 91.0°F (2010) | 51.1°F (2013) | 0.43 in (2007) |
| August 10 | 93.9°F (2010) | 48.9°F (2013) | 1.12 in (2016) |
| August 11 | 91.9°F (2018) | 48.9°F (2013) | 1.66 in (2007) |
| August 12 | 95.0°F (2018) | 52.0°F (2007) | 1.76 in (2012) |
| August 13 | 99.0°F (2018) | 51.1°F (2012) | 0.55 in (2010) |
| August 14 | 93.9°F (2009) | 50.0°F (2017) | 0.06 in (2020) |
| August 15 | 96.1°F (2015) | 51.1°F (2017) | 0.06 in (2010) |
| August 16 | 100.0°F (2015) | 46.9°F (2012) | 1.33 in (2011) |
| August 17 | 87.1°F (2018) | 43.0°F (2012) | 0.49 in (2014) |
| August 18 | 90.0°F (2008) | 44.1°F (2012) | 0.27 in (2010) |
| August 19 | 88.0°F (2018) | 46.0°F (2009) | 2.05 in (2018) |
| August 20 | 93.0°F (2013) | 50.0°F (2015) | 0.24 in (2016) |
| August 21 | 98.1°F (2013) | 48.0°F (2016) | 0.42 in (2021) |
| August 22 | 89.1°F (2015) | 48.0°F (2009) | 0.10 in (2014) |
| August 23 | 100.0°F (2010) | 46.0°F (2008) | 1.16 in (2015) |
| August 24 | 95.0°F (2011) | 42.1°F (2015) | 1.19 in (2014) |
| August 25 | 91.9°F (2012) | 42.1°F (2015) | 0.13 in (2019) |
| August 26 | 93.0°F (2013) | 44.1°F (2014) | 0.44 in (2021) |
| August 27 | 91.9°F (2007) | 44.1°F (2014) | 0.19 in (2021) |
| August 28 | 96.1°F (2010) | 46.9°F (2008) | 0.60 in (2020) |
| August 29 | 90.0°F (2013) | 44.1°F (2007) | 0.87 in (2013) |
| August 30 | 98.1°F (2012) | 44.1°F (2007) | 0.44 in (2010) |
| August 31 | 96.1°F (2008) | 45.0°F (2009) | 0.52 in (2013) |