August weather in Cosmopolis, WA
The average temperature in Cosmopolis in August is 61.8°F (54.4°F–69.3°F). Average precipitation: 1.52 inches.
August is a summer month in Cosmopolis, and is warmer than the annual average of 51.3°F. Daily temperatures swing about 14.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 2m. For travel, August is one of the best months of the year to visit.
Avg High
69.3°F
Avg Low
54.4°F
Precipitation
1.52 in
Daylight
14h 2m
August records in Cosmopolis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 95.0°F (1965) | 42.1°F (1932) | 0.53 in (1940) |
| August 2 | 93.9°F (1939) | 41.0°F (1946) | 0.75 in (1964) |
| August 3 | 93.9°F (2017) | 41.0°F (1921) | 1.31 in (1956) |
| August 4 | 97.0°F (1993) | 43.0°F (1910) | 0.31 in (1962) |
| August 5 | 97.0°F (2012) | 39.9°F (1909) | 0.75 in (1934) |
| August 6 | 90.0°F (1902) | 39.9°F (1934) | 0.80 in (1893) |
| August 7 | 90.0°F (1972) | 41.0°F (1935) | 1.41 in (1995) |
| August 8 | 97.0°F (1939) | 41.0°F (1917) | 0.68 in (1932) |
| August 9 | 96.1°F (1981) | 39.9°F (1914) | 0.51 in (1994) |
| August 10 | 105.1°F (1981) | 39.9°F (1934) | 1.21 in (1937) |
| August 11 | 100.9°F (1981) | 42.1°F (1914) | 0.63 in (1965) |
| August 12 | 96.1°F (1961) | 39.9°F (1914) | 0.93 in (1965) |
| August 13 | 91.0°F (1977) | 42.1°F (1937) | 0.66 in (1982) |
| August 14 | 95.0°F (1942) | 39.9°F (1937) | 1.01 in (1976) |
| August 15 | 96.1°F (2010) | 39.9°F (1935) | 1.31 in (1950) |
| August 16 | 95.0°F (1927) | 42.1°F (1907) | 2.03 in (1912) |
| August 17 | 95.0°F (1940) | 39.9°F (1911) | 1.42 in (1924) |
| August 18 | 90.0°F (1946) | 41.0°F (1901) | 0.58 in (1975) |
| August 19 | 93.0°F (1939) | 39.0°F (1916) | 0.74 in (1965) |
| August 20 | 98.1°F (2016) | 39.9°F (1945) | 1.02 in (2008) |
| August 21 | 91.9°F (1913) | 39.9°F (1934) | 0.78 in (1943) |
| August 22 | 93.9°F (1933) | 39.9°F (1938) | 2.15 in (2001) |
| August 23 | 90.0°F (1898) | 39.9°F (1910) | 1.09 in (2001) |
| August 24 | 91.9°F (1916) | 42.1°F (1908) | 1.03 in (1978) |
| August 25 | 95.0°F (1982) | 39.9°F (1905) | 1.27 in (1926) |
| August 26 | 93.0°F (1935) | 42.1°F (1902) | 0.86 in (1953) |
| August 27 | 95.0°F (1935) | 36.0°F (1910) | 0.99 in (1991) |
| August 28 | 91.9°F (1923) | 39.9°F (1911) | 1.00 in (1975) |
| August 29 | 95.0°F (2017) | 36.0°F (1911) | 2.33 in (1991) |
| August 30 | 93.0°F (1893) | 37.9°F (1907) | 2.28 in (1991) |
| August 31 | 93.0°F (1893) | 41.0°F (1907) | 1.91 in (1927) |