August weather in Union, OR
The average temperature in Union in August is 68.5°F (50.0°F–86.9°F). Average precipitation: 0.46 inches.
August is a summer month in Union, and is warmer than the annual average of 49°F. Daily temperatures swing about 36.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 13h 54m. For travel, August is a comfortable month to visit.
Avg High
86.9°F
Avg Low
50.0°F
Precipitation
0.46 in
Daylight
13h 54m
August records in Union
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1959) | 36.0°F (1953) | 0.90 in (1960) |
| August 2 | 100.9°F (2009) | 34.0°F (1937) | 0.98 in (1976) |
| August 3 | 100.0°F (1949) | 36.0°F (2002) | 0.98 in (1912) |
| August 4 | 100.9°F (1961) | 36.0°F (1945) | 0.40 in (1922) |
| August 5 | 108.0°F (1961) | 36.0°F (1921) | 0.40 in (2001) |
| August 6 | 100.9°F (1990) | 37.0°F (1947) | 0.36 in (1984) |
| August 7 | 99.0°F (1990) | 35.1°F (1939) | 1.13 in (2009) |
| August 8 | 99.0°F (1990) | 37.0°F (1917) | 0.47 in (1995) |
| August 9 | 100.0°F (1972) | 37.9°F (1955) | 0.39 in (1989) |
| August 10 | 99.0°F (1987) | 35.1°F (1947) | 0.77 in (1983) |
| August 11 | 100.9°F (1996) | 37.9°F (1943) | 0.39 in (1913) |
| August 12 | 98.1°F (2001) | 37.9°F (1966) | 0.39 in (1965) |
| August 13 | 100.9°F (2001) | 37.9°F (1932) | 0.29 in (2009) |
| August 14 | 99.0°F (1977) | 35.1°F (1949) | 1.30 in (1979) |
| August 15 | 100.0°F (1992) | 35.1°F (1937) | 0.40 in (1976) |
| August 16 | 99.0°F (2003) | 32.0°F (1935) | 0.62 in (1978) |
| August 17 | 99.0°F (1967) | 36.0°F (1946) | 0.83 in (1979) |
| August 18 | 100.0°F (1977) | 37.0°F (1914) | 0.91 in (1975) |
| August 19 | 100.9°F (1967) | 33.1°F (1916) | 0.74 in (1968) |
| August 20 | 100.0°F (1967) | 33.1°F (1952) | 0.96 in (1954) |
| August 21 | 100.0°F (1977) | 35.1°F (1955) | 0.44 in (1959) |
| August 22 | 97.0°F (2005) | 35.1°F (1947) | 0.28 in (1983) |
| August 23 | 98.1°F (1961) | 36.0°F (1962) | 1.01 in (2003) |
| August 24 | 100.0°F (1969) | 30.9°F (1992) | 0.83 in (1989) |
| August 25 | 102.0°F (1988) | 30.9°F (1992) | 1.24 in (1920) |
| August 26 | 97.0°F (2010) | 33.1°F (1992) | 0.36 in (1929) |
| August 27 | 99.0°F (2010) | 32.0°F (1993) | 0.62 in (1956) |
| August 28 | 97.0°F (1915) | 30.9°F (1960) | 0.78 in (1966) |
| August 29 | 98.1°F (1915) | 28.9°F (1980) | 0.47 in (1943) |
| August 30 | 98.1°F (1955) | 28.0°F (1912) | 1.15 in (1926) |
| August 31 | 99.0°F (1971) | 33.1°F (1932) | 1.59 in (1984) |