August weather in Mossyrock, WA
The average temperature in Mossyrock in August is 66.4°F (51.9°F–80.9°F). Average precipitation: 1.30 inches.
August is a summer month in Mossyrock, and is warmer than the annual average of 51.6°F. Daily temperatures swing about 29°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 13h 60m. For travel, August is a comfortable month to visit.
Avg High
80.9°F
Avg Low
51.9°F
Precipitation
1.30 in
Daylight
13h 60m
August records in Mossyrock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 104.0°F (2021) | 46.0°F (2015) | 0.76 in (1985) |
| August 2 | 102.0°F (2017) | 46.9°F (2011) | 0.46 in (1996) |
| August 3 | 105.1°F (2017) | 41.0°F (2025) | 0.78 in (2016) |
| August 4 | 96.1°F (2014) | 51.1°F (2016) | 0.05 in (2018) |
| August 5 | 102.0°F (2017) | 50.0°F (2022) | 0.58 in (1999) |
| August 6 | 97.0°F (2012) | 50.0°F (2024) | 0.30 in (1999) |
| August 7 | 97.0°F (2018) | 50.0°F (2013) | 0.87 in (1992) |
| August 8 | 102.9°F (2018) | 50.0°F (2015) | 0.67 in (1985) |
| August 9 | 100.9°F (2018) | 48.9°F (2020) | 0.54 in (1999) |
| August 10 | 102.0°F (2018) | 44.1°F (2013) | 0.50 in (2019) |
| August 11 | 102.9°F (2025) | 50.0°F (2014) | 0.34 in (2003) |
| August 12 | 107.1°F (2021) | 48.9°F (2020) | 0.20 in (2009) |
| August 13 | 105.1°F (2025) | 45.0°F (2020) | 1.25 in (2014) |
| August 14 | 102.9°F (2023) | 45.0°F (2020) | 0.54 in (1982) |
| August 15 | 111.9°F (2023) | 48.0°F (2020) | 0.20 in (2025) |
| August 16 | 109.9°F (2023) | 46.0°F (2011) | 0.70 in (2025) |
| August 17 | 109.0°F (2023) | 46.0°F (2011) | 0.74 in (1995) |
| August 18 | 100.0°F (2022) | 46.0°F (2011) | 0.34 in (1995) |
| August 19 | 100.0°F (2016) | 48.0°F (2023) | 0.37 in (2008) |
| August 20 | 102.0°F (2016) | 43.0°F (2023) | 0.23 in (2008) |
| August 21 | 102.9°F (2016) | 48.0°F (2014) | 0.60 in (2008) |
| August 22 | 100.9°F (2018) | 48.0°F (2014) | 2.90 in (2004) |
| August 23 | 100.0°F (2025) | 42.1°F (2021) | 0.73 in (1989) |
| August 24 | 99.0°F (2025) | 42.1°F (2021) | 0.52 in (2024) |
| August 25 | 100.9°F (2025) | 45.0°F (2015) | 1.03 in (2004) |
| August 26 | 98.1°F (2016) | 44.1°F (2012) | 0.84 in (2004) |
| August 27 | 99.0°F (2016) | 45.0°F (2012) | 0.67 in (1997) |
| August 28 | 100.0°F (2017) | 48.0°F (2012) | 0.51 in (1980) |
| August 29 | 102.0°F (2017) | 46.0°F (2024) | 0.50 in (1991) |
| August 30 | 96.1°F (2022) | 46.0°F (2020) | 1.18 in (1983) |
| August 31 | 102.9°F (2022) | 44.1°F (2012) | 0.73 in (1985) |