August weather in DuPont, WA
The average temperature in DuPont in August is 65.0°F (54.3°F–75.6°F). Average precipitation: 0.86 inches.
August is a summer month in DuPont, and is warmer than the annual average of 51.9°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 14h 2m. For travel, August is one of the best months of the year to visit.
Avg High
75.6°F
Avg Low
54.3°F
Precipitation
0.86 in
Daylight
14h 2m
August records in DuPont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 89.1°F (2015) | 50.0°F (2001) | 0.11 in (2008) |
| August 2 | 90.0°F (2009) | 51.1°F (2012) | 0.23 in (2016) |
| August 3 | 90.0°F (2017) | 50.0°F (2006) | 0.09 in (2001) |
| August 4 | 90.0°F (2014) | 51.1°F (2003) | 0.19 in (2004) |
| August 5 | 91.9°F (2012) | 50.0°F (2002) | 0.05 in (2004) |
| August 6 | 86.0°F (2013) | 52.0°F (2016) | 0.77 in (2004) |
| August 7 | 87.1°F (2022) | 54.0°F (2002) | 0.09 in (2004) |
| August 8 | 90.0°F (2018) | 51.1°F (2001) | 0.05 in (2016) |
| August 9 | 91.0°F (2004) | 50.0°F (2020) | 0.23 in (2008) |
| August 10 | 89.1°F (2001) | 53.1°F (2007) | 0.28 in (2019) |
| August 11 | 86.0°F (2021) | 25.2°F (2023) | 0.18 in (2009) |
| August 12 | 91.0°F (2025) | 48.9°F (2006) | 0.59 in (2014) |
| August 13 | 90.0°F (2002) | 46.9°F (2020) | 1.05 in (2014) |
| August 14 | 91.0°F (2010) | 50.0°F (2000) | 0.68 in (2015) |
| August 15 | 93.0°F (2023) | 50.0°F (2009) | 0.81 in (2025) |
| August 16 | 93.9°F (2020) | 50.0°F (2000) | 0.01 in (2009) |
| August 17 | 90.0°F (2012) | 50.0°F (2000) | 0.41 in (2024) |
| August 18 | 89.1°F (2022) | 51.1°F (2018) | 0.28 in (2000) |
| August 19 | 91.0°F (2016) | 50.0°F (2023) | 0.27 in (2008) |
| August 20 | 90.0°F (2016) | 48.0°F (2010) | 0.64 in (2008) |
| August 21 | 87.1°F (2018) | 50.0°F (2010) | 0.96 in (2001) |
| August 22 | 88.0°F (2018) | 50.0°F (2021) | 1.64 in (2001) |
| August 23 | 88.0°F (2025) | 48.0°F (2020) | 0.52 in (2001) |
| August 24 | 88.0°F (2025) | 48.0°F (2021) | 0.59 in (2004) |
| August 25 | 88.0°F (2025) | 48.0°F (2021) | 0.38 in (2004) |
| August 26 | 90.0°F (2016) | 50.0°F (2017) | 0.15 in (2004) |
| August 27 | 86.0°F (2009) | 18.1°F (2007) | 0.09 in (2008) |
| August 28 | 87.1°F (2002) | 46.9°F (2010) | 0.07 in (2015) |
| August 29 | 82.9°F (2007) | 51.1°F (2000) | 1.19 in (2015) |
| August 30 | 86.0°F (2022) | 46.9°F (2020) | 0.58 in (2013) |
| August 31 | 84.0°F (2022) | 48.0°F (2008) | 0.11 in (2008) |