August weather in Stillwater, OK
The average temperature in Stillwater in August is 81.3°F (69.8°F–92.8°F). Average precipitation: 3.66 inches.
August is a summer month in Stillwater, and is warmer than the annual average of 60.2°F. Daily temperatures swing about 23°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 23m. For travel, August is hot.
Avg High
92.8°F
Avg Low
69.8°F
Precipitation
3.66 in
Daylight
13h 23m
August records in Stillwater
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 111.9°F (2012) | 61.9°F (2018) | 0.35 in (2021) |
| August 2 | 111.6°F (2011) | 57.4°F (2009) | 0.20 in (2003) |
| August 3 | 110.8°F (2012) | 60.4°F (2020) | 0.81 in (2019) |
| August 4 | 109.8°F (2012) | 59.7°F (2021) | 0.13 in (2010) |
| August 5 | 111.0°F (2011) | 61.2°F (2020) | 1.25 in (2009) |
| August 6 | 108.0°F (2011) | 64.0°F (2004) | 0.50 in (2023) |
| August 7 | 104.4°F (2012) | 65.5°F (2023) | 0.47 in (2023) |
| August 8 | 108.1°F (2011) | 66.0°F (2017) | 1.91 in (2014) |
| August 9 | 106.0°F (2006) | 63.7°F (2017) | 0.75 in (2013) |
| August 10 | 106.9°F (2006) | 61.2°F (2024) | 1.74 in (2009) |
| August 11 | 103.1°F (2010) | 57.6°F (2012) | 2.40 in (2024) |
| August 12 | 103.6°F (2010) | 55.9°F (2004) | 1.26 in (2005) |
| August 13 | 105.1°F (2010) | 56.3°F (2004) | 2.57 in (2023) |
| August 14 | 104.9°F (2010) | 57.9°F (2004) | 1.14 in (2005) |
| August 15 | 102.4°F (2025) | 60.3°F (2004) | 1.52 in (2017) |
| August 16 | 104.5°F (2011) | 60.4°F (2015) | 2.81 in (2018) |
| August 17 | 102.0°F (2003) | 62.4°F (2008) | 1.63 in (2010) |
| August 18 | 105.3°F (2011) | 60.3°F (2020) | 1.34 in (2009) |
| August 19 | 107.2°F (2011) | 55.6°F (2015) | 1.27 in (2018) |
| August 20 | 103.5°F (2023) | 51.8°F (2015) | 1.05 in (2005) |
| August 21 | 102.7°F (2003) | 53.2°F (2004) | 0.96 in (2006) |
| August 22 | 102.7°F (2003) | 54.0°F (2016) | 2.52 in (2005) |
| August 23 | 104.4°F (2011) | 63.3°F (2025) | 2.91 in (2019) |
| August 24 | 109.4°F (2011) | 60.3°F (2017) | 0.48 in (2007) |
| August 25 | 104.0°F (2006) | 56.3°F (2015) | 2.04 in (2012) |
| August 26 | 102.0°F (2011) | 51.8°F (2010) | 0.24 in (2019) |
| August 27 | 101.3°F (2011) | 51.8°F (2010) | 0.54 in (2006) |
| August 28 | 107.8°F (2011) | 59.0°F (2010) | 0.61 in (2025) |
| August 29 | 100.4°F (2011) | 55.9°F (2004) | 0.65 in (2022) |
| August 30 | 103.8°F (2011) | 57.2°F (2004) | 1.31 in (2019) |
| August 31 | 106.5°F (2011) | 52.5°F (2009) | 1.32 in (2003) |