August weather in Eureka, SD
The average temperature in Eureka in August is 68.3°F (55.6°F–81.0°F). Average precipitation: 2.24 inches.
August is a summer month in Eureka, and is warmer than the annual average of 41.8°F. Daily temperatures swing about 25.4°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 57m. For travel, August is a comfortable month to visit.
Avg High
81.0°F
Avg Low
55.6°F
Precipitation
2.24 in
Daylight
13h 57m
August records in Eureka
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 106.0°F (1936) | 39.0°F (1927) | 2.16 in (1987) |
| August 2 | 106.0°F (1982) | 42.1°F (1971) | 1.45 in (1998) |
| August 3 | 108.0°F (1947) | 39.0°F (1978) | 1.02 in (1981) |
| August 4 | 108.0°F (1934) | 37.0°F (1915) | 1.18 in (1969) |
| August 5 | 108.0°F (1941) | 44.1°F (1915) | 1.24 in (2000) |
| August 6 | 108.0°F (1941) | 41.0°F (1976) | 1.32 in (1931) |
| August 7 | 100.9°F (2001) | 42.1°F (1921) | 1.15 in (1911) |
| August 8 | 105.1°F (1936) | 41.0°F (1939) | 1.40 in (1956) |
| August 9 | 104.0°F (1947) | 34.0°F (1917) | 1.69 in (1994) |
| August 10 | 102.9°F (1947) | 34.0°F (1985) | 1.51 in (2016) |
| August 11 | 102.0°F (1959) | 39.9°F (1952) | 2.01 in (1949) |
| August 12 | 102.9°F (1928) | 35.1°F (1964) | 1.62 in (1999) |
| August 13 | 102.0°F (1938) | 37.0°F (1964) | 1.58 in (1946) |
| August 14 | 106.0°F (1935) | 35.1°F (1929) | 0.88 in (1908) |
| August 15 | 109.0°F (1988) | 42.1°F (1985) | 1.17 in (1974) |
| August 16 | 109.0°F (1988) | 42.1°F (1943) | 2.18 in (1927) |
| August 17 | 105.1°F (2003) | 37.9°F (1968) | 1.56 in (2025) |
| August 18 | 105.1°F (1959) | 39.9°F (1932) | 1.42 in (1930) |
| August 19 | 102.0°F (1959) | 37.0°F (1950) | 1.04 in (2015) |
| August 20 | 100.9°F (2013) | 36.0°F (1950) | 1.48 in (1980) |
| August 21 | 102.9°F (1947) | 39.9°F (1920) | 1.78 in (1916) |
| August 22 | 102.9°F (2010) | 32.0°F (1908) | 2.02 in (1992) |
| August 23 | 107.1°F (2003) | 36.0°F (1928) | 2.28 in (1990) |
| August 24 | 100.0°F (1967) | 30.0°F (1934) | 1.25 in (2006) |
| August 25 | 102.0°F (1926) | 34.0°F (1934) | 3.02 in (1960) |
| August 26 | 100.9°F (1970) | 28.9°F (1914) | 1.77 in (1942) |
| August 27 | 104.0°F (1973) | 37.0°F (1916) | 2.76 in (1931) |
| August 28 | 102.9°F (1973) | 30.9°F (1935) | 1.33 in (1921) |
| August 29 | 100.9°F (1961) | 33.1°F (1915) | 1.46 in (1993) |
| August 30 | 99.0°F (1961) | 33.1°F (1935) | 1.46 in (1993) |
| August 31 | 97.0°F (1953) | 35.1°F (1958) | 1.16 in (1941) |