August weather in Grenville, SD
The average temperature in Grenville in August is 70.6°F (60.8°F–80.5°F). Average precipitation: 2.26 inches.
August is a summer month in Grenville, and is warmer than the annual average of 44.1°F. Daily temperatures swing about 19.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 56m. For travel, August is a comfortable month to visit.
Avg High
80.5°F
Avg Low
60.8°F
Precipitation
2.26 in
Daylight
13h 56m
August records in Grenville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 104.0°F (1988) | 48.0°F (1968) | 1.20 in (2020) |
| August 2 | 99.0°F (1958) | 41.0°F (1976) | 3.35 in (1988) |
| August 3 | 98.1°F (1983) | 45.0°F (1972) | 1.01 in (2017) |
| August 4 | 100.9°F (1959) | 44.1°F (1974) | 1.35 in (1988) |
| August 5 | 98.1°F (1968) | 48.9°F (1994) | 0.67 in (1959) |
| August 6 | 98.1°F (1968) | 46.9°F (1975) | 2.15 in (1955) |
| August 7 | 98.1°F (1983) | 46.9°F (1989) | 1.08 in (1982) |
| August 8 | 100.0°F (1958) | 48.9°F (1994) | 0.57 in (1956) |
| August 9 | 99.0°F (1958) | 45.0°F (1966) | 1.42 in (1979) |
| August 10 | 97.0°F (1971) | 44.1°F (1982) | 0.86 in (1994) |
| August 11 | 96.1°F (1988) | 39.9°F (1977) | 2.26 in (2016) |
| August 12 | 95.0°F (1969) | 44.1°F (1990) | 1.42 in (2002) |
| August 13 | 102.0°F (1965) | 37.9°F (1964) | 2.02 in (1966) |
| August 14 | 100.9°F (1965) | 41.0°F (1979) | 0.81 in (1986) |
| August 15 | 98.1°F (1988) | 46.0°F (1960) | 0.95 in (1977) |
| August 16 | 98.1°F (1988) | 46.9°F (1970) | 1.19 in (1983) |
| August 17 | 100.0°F (1976) | 44.1°F (1977) | 0.70 in (2006) |
| August 18 | 102.9°F (1973) | 45.0°F (1966) | 3.04 in (1990) |
| August 19 | 102.0°F (1976) | 39.9°F (1985) | 1.64 in (1989) |
| August 20 | 100.0°F (1976) | 44.1°F (1956) | 2.74 in (1966) |
| August 21 | 98.1°F (1976) | 44.1°F (2004) | 1.04 in (1998) |
| August 22 | 98.1°F (1971) | 42.1°F (1974) | 0.65 in (1972) |
| August 23 | 98.1°F (1976) | 46.0°F (1966) | 1.85 in (1985) |
| August 24 | 98.1°F (1976) | 43.0°F (1958) | 1.14 in (2021) |
| August 25 | 97.0°F (1974) | 43.0°F (1968) | 1.50 in (1960) |
| August 26 | 97.0°F (1976) | 43.0°F (1992) | 1.21 in (1989) |
| August 27 | 98.1°F (1973) | 37.9°F (1982) | 1.76 in (2021) |
| August 28 | 98.1°F (1973) | 39.9°F (1965) | 1.36 in (1978) |
| August 29 | 96.1°F (1983) | 43.0°F (1988) | 1.29 in (1997) |
| August 30 | 95.0°F (1961) | 45.0°F (2009) | 1.83 in (1971) |
| August 31 | 91.9°F (1976) | 39.9°F (1987) | 1.22 in (2021) |