June weather in Keystone, SD
The average temperature in Keystone in June is 61.5°F (51.9°F–71.1°F). Average precipitation: 3.58 inches. Average snowfall is 0.2 inches.
June is a summer month in Keystone, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 19.2°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 15h 14m. For travel, June is one of the best months of the year to visit.
Avg High
71.1°F
Avg Low
51.9°F
Precipitation
3.58 in
Snow
0.2 in
June records in Keystone
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 84.9°F (2020) | 32.0°F (1984) | 1.52 in (1963) |
| June 2 | 90.0°F (1977) | 32.0°F (1984) | 1.07 in (1973) |
| June 3 | 88.0°F (1968) | 30.0°F (1998) | 0.91 in (1993) |
| June 4 | 90.0°F (1980) | 30.9°F (1998) | 0.94 in (2001) |
| June 5 | 91.0°F (1969) | 30.9°F (1984) | 1.86 in (1963) |
| June 6 | 93.0°F (1969) | 36.0°F (2010) | 1.40 in (1964) |
| June 7 | 91.9°F (1988) | 36.0°F (1979) | 1.18 in (1993) |
| June 8 | 93.9°F (2000) | 32.0°F (1995) | 1.96 in (1976) |
| June 9 | 91.9°F (1976) | 30.9°F (1979) | 1.67 in (1986) |
| June 10 | 90.0°F (1976) | 35.1°F (1995) | 6.30 in (1972) |
| June 11 | 93.0°F (2016) | 34.0°F (1985) | 1.03 in (1967) |
| June 12 | 87.1°F (1979) | 32.0°F (1969) | 2.70 in (1970) |
| June 13 | 93.0°F (1979) | 28.9°F (1969) | 1.05 in (2010) |
| June 14 | 95.0°F (2018) | 32.0°F (1969) | 1.77 in (1976) |
| June 15 | 93.0°F (2021) | 34.0°F (1976) | 2.20 in (1963) |
| June 16 | 93.0°F (1989) | 27.0°F (1981) | 1.25 in (1962) |
| June 17 | 91.9°F (1989) | 39.0°F (2000) | 1.88 in (1962) |
| June 18 | 91.0°F (1986) | 34.0°F (1973) | 1.80 in (1999) |
| June 19 | 97.0°F (1989) | 35.1°F (2024) | 1.07 in (1975) |
| June 20 | 96.1°F (1974) | 35.1°F (2024) | 1.10 in (1990) |
| June 21 | 93.9°F (1974) | 37.0°F (2010) | 1.15 in (1995) |
| June 22 | 91.0°F (2005) | 44.1°F (1989) | 1.00 in (1988) |
| June 23 | 93.0°F (2001) | 37.0°F (1967) | 1.40 in (1988) |
| June 24 | 97.0°F (1988) | 37.9°F (1967) | 1.63 in (1968) |
| June 25 | 91.0°F (1977) | 37.9°F (2003) | 0.85 in (2025) |
| June 26 | 98.1°F (1974) | 39.0°F (1985) | 0.50 in (1975) |
| June 27 | 99.0°F (1970) | 41.0°F (1985) | 0.58 in (2017) |
| June 28 | 96.1°F (1966) | 39.9°F (1985) | 0.60 in (1992) |
| June 29 | 99.0°F (1970) | 41.0°F (1985) | 0.87 in (2023) |
| June 30 | 93.0°F (1966) | 39.0°F (1995) | 0.95 in (2018) |