September weather in Roscoe, SD
The average temperature in Roscoe in September is 59.6°F (46.6°F–72.6°F). Average precipitation: 1.91 inches.
September is a fall month in Roscoe, and is warmer than the annual average of 42.6°F. Daily temperatures swing about 26°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
72.6°F
Avg Low
46.6°F
Precipitation
1.91 in
Daylight
12h 18m
September records in Roscoe
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1970) | 37.0°F (1965) | 0.80 in (1963) |
| September 2 | 100.9°F (1971) | 43.0°F (1952) | 1.03 in (2008) |
| September 3 | 95.0°F (1948) | 39.0°F (2008) | 1.99 in (1999) |
| September 4 | 98.1°F (1952) | 32.0°F (1962) | 1.53 in (1971) |
| September 5 | 96.1°F (2005) | 35.1°F (1965) | 1.22 in (2004) |
| September 6 | 98.1°F (2001) | 33.1°F (1956) | 0.45 in (1954) |
| September 7 | 93.9°F (1950) | 37.0°F (1949) | 1.74 in (1938) |
| September 8 | 100.9°F (1959) | 37.0°F (1992) | 1.27 in (1968) |
| September 9 | 97.0°F (1961) | 30.9°F (2020) | 0.75 in (2013) |
| September 10 | 97.0°F (1952) | 32.0°F (2020) | 0.98 in (2002) |
| September 11 | 98.1°F (1998) | 28.0°F (1955) | 0.40 in (2008) |
| September 12 | 93.0°F (1990) | 28.9°F (1989) | 0.86 in (2019) |
| September 13 | 96.1°F (2017) | 28.0°F (1970) | 0.59 in (2005) |
| September 14 | 100.9°F (1948) | 27.0°F (1949) | 0.86 in (2001) |
| September 15 | 102.0°F (1948) | 30.9°F (1993) | 1.31 in (2010) |
| September 16 | 91.9°F (1948) | 30.0°F (1959) | 0.81 in (1965) |
| September 17 | 97.0°F (1955) | 33.1°F (1965) | 1.16 in (1968) |
| September 18 | 93.0°F (1955) | 30.0°F (1991) | 2.10 in (1946) |
| September 19 | 96.1°F (1998) | 21.9°F (1991) | 1.10 in (2025) |
| September 20 | 95.0°F (1972) | 21.9°F (1991) | 2.58 in (1996) |
| September 21 | 89.1°F (2005) | 28.9°F (1953) | 1.63 in (2018) |
| September 22 | 91.9°F (2015) | 25.0°F (1995) | 1.40 in (1968) |
| September 23 | 93.0°F (1958) | 25.0°F (1995) | 0.73 in (2006) |
| September 24 | 91.9°F (2007) | 26.1°F (1951) | 1.41 in (2010) |
| September 25 | 93.0°F (1949) | 27.0°F (2000) | 0.43 in (1959) |
| September 26 | 91.0°F (1952) | 30.0°F (1970) | 0.72 in (1999) |
| September 27 | 99.0°F (1952) | 21.9°F (1967) | 0.22 in (1996) |
| September 28 | 87.1°F (1989) | 21.0°F (1951) | 0.42 in (2002) |
| September 29 | 91.0°F (2021) | 25.0°F (1992) | 0.69 in (1965) |
| September 30 | 88.0°F (2007) | 25.0°F (1958) | 0.80 in (2021) |