August weather in Coupeville, WA
The average temperature in Coupeville in August is 61.6°F (52.7°F–70.5°F). Average precipitation: 0.70 inches.
August is a summer month in Coupeville, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 17.8°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 14h 7m. For travel, August is one of the best months of the year to visit.
Avg High
70.5°F
Avg Low
52.7°F
Precipitation
0.70 in
Daylight
14h 7m
August records in Coupeville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 91.9°F (1898) | 45.0°F (1931) | 0.42 in (1896) |
| August 2 | 84.0°F (1898) | 43.0°F (1908) | 0.62 in (1956) |
| August 3 | 84.9°F (1952) | 42.1°F (1908) | 0.52 in (1896) |
| August 4 | 87.1°F (1904) | 45.0°F (1931) | 0.79 in (1962) |
| August 5 | 91.0°F (1898) | 42.1°F (1982) | 0.68 in (1933) |
| August 6 | 86.0°F (1901) | 42.1°F (1939) | 0.18 in (2004) |
| August 7 | 87.1°F (1972) | 43.0°F (1969) | 0.40 in (1985) |
| August 8 | 98.1°F (1960) | 43.0°F (1974) | 0.26 in (1918) |
| August 9 | 97.0°F (1960) | 43.0°F (1959) | 0.53 in (1991) |
| August 10 | 90.0°F (1981) | 44.1°F (1991) | 0.28 in (2019) |
| August 11 | 90.0°F (1981) | 39.9°F (1966) | 1.24 in (2018) |
| August 12 | 87.1°F (1977) | 44.1°F (1899) | 0.50 in (1978) |
| August 13 | 88.0°F (2002) | 45.0°F (1953) | 0.77 in (2014) |
| August 14 | 90.0°F (2010) | 43.0°F (1931) | 0.58 in (2015) |
| August 15 | 91.9°F (2010) | 43.0°F (1937) | 0.45 in (1976) |
| August 16 | 91.9°F (1967) | 39.9°F (1986) | 1.14 in (1972) |
| August 17 | 90.0°F (1977) | 41.0°F (1966) | 1.12 in (2005) |
| August 18 | 84.9°F (1940) | 42.1°F (1966) | 1.20 in (1975) |
| August 19 | 84.0°F (2009) | 42.1°F (1934) | 0.68 in (1976) |
| August 20 | 86.0°F (1966) | 41.0°F (1945) | 0.64 in (1965) |
| August 21 | 88.0°F (1958) | 39.9°F (1908) | 0.71 in (1989) |
| August 22 | 84.9°F (1958) | 42.1°F (1962) | 0.82 in (2004) |
| August 23 | 84.9°F (1926) | 39.9°F (1908) | 1.02 in (1977) |
| August 24 | 91.0°F (1898) | 41.0°F (1959) | 0.68 in (2004) |
| August 25 | 88.0°F (1958) | 39.9°F (1959) | 0.59 in (1945) |
| August 26 | 90.0°F (1933) | 39.9°F (1969) | 1.17 in (1926) |
| August 27 | 86.0°F (1935) | 41.0°F (1978) | 0.70 in (1991) |
| August 28 | 86.0°F (1935) | 39.9°F (1899) | 0.43 in (1966) |
| August 29 | 86.0°F (1974) | 37.9°F (1980) | 0.77 in (1904) |
| August 30 | 84.0°F (1944) | 39.9°F (1959) | 0.76 in (1937) |
| August 31 | 82.9°F (1987) | 41.0°F (1969) | 0.85 in (1897) |