February weather in Keystone, SD
The average temperature in Keystone in February is 27.3°F (18.4°F–36.3°F). Average precipitation: 0.76 inches. Average snowfall is 8.9 inches.
February is a winter month in Keystone, and is cooler than the annual average of 45.7°F. Daily temperatures swing about 17.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 10h 15m. For travel, February is cold.
Avg High
36.3°F
Avg Low
18.4°F
Precipitation
0.76 in
Snow
8.9 in
February records in Keystone
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| February 1 | 64.9°F (1992) | -20.9°F (1996) | 0.26 in (2016) |
| February 2 | 57.9°F (1962) | -27.9°F (1989) | 0.27 in (2003) |
| February 3 | 64.0°F (1962) | -29.0°F (1989) | 0.63 in (1997) |
| February 4 | 62.1°F (2005) | -27.0°F (1989) | 0.35 in (1987) |
| February 5 | 64.9°F (1963) | -17.0°F (1982) | 0.33 in (1976) |
| February 6 | 63.0°F (2015) | -16.1°F (2014) | 0.46 in (1986) |
| February 7 | 62.1°F (2015) | -15.0°F (1994) | 0.36 in (1969) |
| February 8 | 59.0°F (2000) | -17.0°F (1994) | 0.26 in (2018) |
| February 9 | 64.0°F (1996) | -11.9°F (2021) | 0.62 in (1966) |
| February 10 | 57.9°F (1962) | -18.0°F (1981) | 0.25 in (1976) |
| February 11 | 57.0°F (2005) | -18.0°F (2021) | 0.13 in (2021) |
| February 12 | 61.0°F (1962) | -18.9°F (2021) | 0.30 in (2007) |
| February 13 | 62.1°F (1999) | -20.0°F (2021) | 0.40 in (1962) |
| February 14 | 57.9°F (1999) | -18.9°F (2021) | 0.60 in (1995) |
| February 15 | 63.0°F (2017) | -11.9°F (1979) | 0.35 in (2006) |
| February 16 | 66.9°F (2017) | -15.0°F (1979) | 0.50 in (1998) |
| February 17 | 57.0°F (2002) | -20.0°F (2006) | 0.46 in (1991) |
| February 18 | 60.1°F (1983) | -18.0°F (2006) | 0.29 in (1970) |
| February 19 | 59.0°F (2017) | -15.0°F (2025) | 0.61 in (2018) |
| February 20 | 57.9°F (1972) | -9.9°F (2018) | 0.43 in (2011) |
| February 21 | 68.0°F (1982) | -11.0°F (2018) | 0.41 in (1975) |
| February 22 | 61.0°F (2000) | -13.0°F (2022) | 0.36 in (2023) |
| February 23 | 60.1°F (1973) | -15.0°F (2022) | 0.54 in (2017) |
| February 24 | 62.1°F (1995) | -17.0°F (2003) | 0.42 in (2011) |
| February 25 | 64.0°F (1995) | -11.0°F (2019) | 0.62 in (1998) |
| February 26 | 60.1°F (1965) | -14.1°F (1962) | 0.31 in (1987) |
| February 27 | 66.0°F (2016) | -11.9°F (1962) | 0.35 in (1969) |
| February 28 | 62.1°F (1972) | -15.0°F (1962) | 0.21 in (2004) |
| February 29 | 64.0°F (1992) | -5.1°F (1996) | 0.95 in (2004) |