August weather in Rosalia, WA
The average temperature in Rosalia in August is 68.3°F (50.9°F–85.7°F). Average precipitation: 0.42 inches.
August is a summer month in Rosalia, and is warmer than the annual average of 48.1°F. Daily temperatures swing about 34.8°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 14h 3m. For travel, August is a comfortable month to visit.
Avg High
85.7°F
Avg Low
50.9°F
Precipitation
0.42 in
Daylight
14h 3m
August records in Rosalia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 108.0°F (2021) | 37.0°F (2006) | 0.21 in (1964) |
| August 2 | 100.9°F (1971) | 37.9°F (1902) | 0.55 in (1974) |
| August 3 | 105.1°F (2024) | 35.1°F (2008) | 0.46 in (1911) |
| August 4 | 100.9°F (1994) | 33.1°F (1980) | 0.42 in (1962) |
| August 5 | 107.1°F (1961) | 34.0°F (1916) | 0.50 in (1985) |
| August 6 | 100.0°F (1998) | 36.0°F (1947) | 0.58 in (1911) |
| August 7 | 102.0°F (1930) | 35.1°F (2002) | 0.38 in (1991) |
| August 8 | 102.9°F (1930) | 32.0°F (1946) | 0.22 in (1907) |
| August 9 | 102.9°F (1972) | 35.1°F (1946) | 0.75 in (2008) |
| August 10 | 106.0°F (2018) | 33.1°F (1893) | 0.19 in (1952) |
| August 11 | 106.0°F (2018) | 35.1°F (1893) | 0.32 in (1983) |
| August 12 | 99.0°F (1971) | 36.0°F (2006) | 0.20 in (1963) |
| August 13 | 104.0°F (1977) | 30.9°F (1895) | 1.00 in (1965) |
| August 14 | 105.1°F (1933) | 30.9°F (1895) | 0.36 in (1979) |
| August 15 | 102.0°F (2004) | 34.0°F (1893) | 0.34 in (1968) |
| August 16 | 102.9°F (2023) | 34.0°F (1935) | 0.49 in (1978) |
| August 17 | 102.9°F (2020) | 33.1°F (1946) | 0.38 in (1921) |
| August 18 | 106.0°F (2008) | 34.0°F (1946) | 0.62 in (1926) |
| August 19 | 102.0°F (2022) | 34.0°F (1946) | 0.42 in (1964) |
| August 20 | 100.9°F (1961) | 35.1°F (1906) | 0.86 in (1979) |
| August 21 | 102.0°F (2006) | 34.0°F (1988) | 0.82 in (1959) |
| August 22 | 99.0°F (2005) | 36.0°F (2008) | 0.26 in (1993) |
| August 23 | 98.1°F (1970) | 34.0°F (1992) | 0.86 in (1992) |
| August 24 | 100.9°F (1970) | 35.1°F (1910) | 1.18 in (1989) |
| August 25 | 100.0°F (1988) | 33.1°F (1980) | 0.84 in (1907) |
| August 26 | 99.0°F (1922) | 32.0°F (1900) | 0.75 in (1956) |
| August 27 | 98.1°F (1929) | 36.0°F (1908) | 0.46 in (1946) |
| August 28 | 98.1°F (1916) | 33.1°F (1902) | 0.55 in (1964) |
| August 29 | 104.0°F (2009) | 30.9°F (1980) | 0.84 in (1920) |
| August 30 | 100.9°F (2017) | 32.0°F (1980) | 0.66 in (1926) |
| August 31 | 97.0°F (2022) | 33.1°F (1905) | 0.92 in (1896) |