August weather in Deer Park, WA
The average temperature in Deer Park in August is 65.5°F (46.8°F–84.2°F). Average precipitation: 0.73 inches.
August is a summer month in Deer Park, and is warmer than the annual average of 45.6°F. Daily temperatures swing about 37.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 14h 6m. For travel, August is a comfortable month to visit.
Avg High
84.2°F
Avg Low
46.8°F
Precipitation
0.73 in
Daylight
14h 6m
August records in Deer Park
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (2009) | 36.0°F (2006) | 0.60 in (2013) |
| August 2 | 104.0°F (2024) | 37.0°F (2006) | 0.58 in (2013) |
| August 3 | 97.0°F (1999) | 37.9°F (2008) | 0.08 in (2003) |
| August 4 | 97.0°F (2014) | 39.9°F (2006) | 0.12 in (2001) |
| August 5 | 96.1°F (2005) | 37.0°F (2002) | 0.01 in (2009) |
| August 6 | 98.1°F (2008) | 36.0°F (2002) | 0.53 in (2004) |
| August 7 | 96.1°F (2019) | 35.1°F (2002) | 0.34 in (1999) |
| August 8 | 98.1°F (2018) | 39.9°F (2002) | 0.63 in (2021) |
| August 9 | 102.0°F (2018) | 41.0°F (2007) | 0.09 in (2016) |
| August 10 | 105.1°F (2018) | 42.1°F (2020) | 1.09 in (2019) |
| August 11 | 99.0°F (2021) | 37.0°F (2007) | 0.26 in (2019) |
| August 12 | 99.0°F (2001) | 36.0°F (2000) | 0.22 in (2009) |
| August 13 | 100.9°F (2015) | 37.9°F (2020) | 0.02 in (2017) |
| August 14 | 100.0°F (2004) | 36.0°F (2020) | 0.08 in (2014) |
| August 15 | 102.9°F (2023) | 36.0°F (2009) | 0.21 in (2014) |
| August 16 | 100.9°F (2020) | 37.9°F (2011) | 0.27 in (2025) |
| August 17 | 102.9°F (2008) | 33.1°F (2002) | 0.18 in (2005) |
| August 18 | 102.0°F (2022) | 39.0°F (2007) | 0.02 in (2008) |
| August 19 | 95.0°F (2012) | 33.1°F (2005) | 0.33 in (2007) |
| August 20 | 95.0°F (2009) | 32.0°F (2000) | 0.53 in (2008) |
| August 21 | 99.0°F (2006) | 37.0°F (2000) | 0.21 in (2012) |
| August 22 | 91.0°F (2017) | 34.0°F (2008) | 0.54 in (2023) |
| August 23 | 93.9°F (2025) | 36.0°F (2015) | 0.26 in (2001) |
| August 24 | 96.1°F (2025) | 36.0°F (2010) | 1.28 in (2004) |
| August 25 | 98.1°F (2025) | 35.1°F (2017) | 0.41 in (2013) |
| August 26 | 93.9°F (2015) | 34.0°F (2005) | 0.15 in (2018) |
| August 27 | 95.0°F (2023) | 35.1°F (2007) | 0.30 in (2008) |
| August 28 | 98.1°F (2009) | 33.1°F (2000) | 0.01 in (2010) |
| August 29 | 99.0°F (2017) | 30.9°F (2010) | 0.47 in (2023) |
| August 30 | 93.0°F (2022) | 34.0°F (2006) | 0.95 in (2023) |
| August 31 | 100.9°F (2022) | 32.0°F (2006) | 0.36 in (2010) |