August weather in Cornelius, OR
The average temperature in Cornelius in August is 67.9°F (53.5°F–82.2°F). Average precipitation: 0.51 inches.
August is a summer month in Cornelius, and is warmer than the annual average of 52.1°F. Daily temperatures swing about 28.7°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 13h 56m. For travel, August is a comfortable month to visit.
Avg High
82.2°F
Avg Low
53.5°F
Precipitation
0.51 in
Daylight
13h 56m
August records in Cornelius
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.9°F (1965) | 41.0°F (1937) | 0.26 in (1985) |
| August 2 | 102.0°F (1939) | 42.1°F (1906) | 0.41 in (1985) |
| August 3 | 104.0°F (2017) | 39.0°F (1903) | 0.42 in (1962) |
| August 4 | 104.0°F (2017) | 39.9°F (1931) | 0.44 in (1933) |
| August 5 | 102.9°F (1990) | 42.1°F (1948) | 0.31 in (1943) |
| August 6 | 106.0°F (1972) | 30.9°F (1996) | 0.12 in (2025) |
| August 7 | 106.0°F (1972) | 41.0°F (1909) | 0.50 in (1999) |
| August 8 | 107.1°F (1981) | 39.9°F (1949) | 0.44 in (1999) |
| August 9 | 108.0°F (1981) | 39.9°F (1954) | 0.84 in (1947) |
| August 10 | 104.0°F (1981) | 39.9°F (1908) | 0.44 in (1982) |
| August 11 | 105.1°F (1981) | 41.0°F (1904) | 0.74 in (1922) |
| August 12 | 105.1°F (1990) | 39.9°F (1927) | 0.77 in (2009) |
| August 13 | 106.0°F (1977) | 39.9°F (1949) | 0.18 in (1987) |
| August 14 | 102.0°F (1992) | 41.0°F (1928) | 0.25 in (1922) |
| August 15 | 106.0°F (2023) | 39.9°F (1935) | 0.65 in (1976) |
| August 16 | 102.0°F (2023) | 39.0°F (1935) | 0.32 in (1968) |
| August 17 | 102.9°F (1977) | 39.0°F (1973) | 0.45 in (1976) |
| August 18 | 108.0°F (1977) | 37.9°F (1920) | 0.30 in (1924) |
| August 19 | 100.9°F (2016) | 39.0°F (1929) | 0.60 in (1911) |
| August 20 | 100.0°F (2016) | 37.9°F (1908) | 0.68 in (1926) |
| August 21 | 100.0°F (2016) | 39.0°F (1904) | 0.33 in (1997) |
| August 22 | 100.0°F (1934) | 33.1°F (1909) | 0.51 in (2001) |
| August 23 | 98.1°F (1916) | 39.9°F (1938) | 1.18 in (1968) |
| August 24 | 100.9°F (1958) | 39.0°F (1929) | 1.62 in (1977) |
| August 25 | 100.9°F (2025) | 37.9°F (1905) | 0.80 in (1968) |
| August 26 | 100.0°F (1935) | 36.0°F (1957) | 0.98 in (1977) |
| August 27 | 102.0°F (1986) | 39.9°F (1925) | 0.47 in (1997) |
| August 28 | 100.9°F (1967) | 37.9°F (1937) | 0.61 in (1983) |
| August 29 | 100.9°F (1967) | 37.0°F (1924) | 0.84 in (1943) |
| August 30 | 95.0°F (1996) | 36.0°F (1920) | 0.60 in (1937) |
| August 31 | 100.0°F (1987) | 35.1°F (1905) | 0.60 in (1939) |