September weather in Plankinton, SD
The average temperature in Plankinton in September is 62.8°F (50.2°F–75.4°F). Average precipitation: 2.58 inches.
September is a fall month in Plankinton, and is warmer than the annual average of 46.1°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
75.4°F
Avg Low
50.2°F
Precipitation
2.58 in
Daylight
12h 17m
September records in Plankinton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1983) | 35.1°F (1946) | 2.10 in (1959) |
| September 2 | 106.0°F (1929) | 37.9°F (1981) | 3.10 in (1986) |
| September 3 | 104.0°F (1960) | 37.0°F (1934) | 2.00 in (1996) |
| September 4 | 102.0°F (2001) | 37.0°F (1956) | 1.62 in (1975) |
| September 5 | 102.9°F (1933) | 36.0°F (1965) | 2.50 in (2016) |
| September 6 | 105.1°F (1970) | 34.0°F (1956) | 2.50 in (2016) |
| September 7 | 105.1°F (1931) | 33.1°F (1986) | 1.50 in (1946) |
| September 8 | 102.9°F (1952) | 37.9°F (1986) | 0.90 in (1976) |
| September 9 | 106.0°F (1931) | 36.0°F (1941) | 2.06 in (1921) |
| September 10 | 104.0°F (1931) | 33.1°F (1940) | 2.20 in (2003) |
| September 11 | 102.0°F (1931) | 32.0°F (1955) | 3.41 in (2019) |
| September 12 | 102.9°F (1939) | 35.1°F (1989) | 2.87 in (2019) |
| September 13 | 104.0°F (1939) | 28.9°F (1949) | 1.30 in (1921) |
| September 14 | 100.0°F (1939) | 32.0°F (1979) | 1.67 in (2001) |
| September 15 | 102.0°F (1955) | 33.1°F (1947) | 1.26 in (1940) |
| September 16 | 98.1°F (1925) | 34.0°F (1958) | 1.11 in (1923) |
| September 17 | 96.1°F (1940) | 30.9°F (1971) | 0.67 in (2021) |
| September 18 | 99.0°F (1940) | 34.0°F (1991) | 1.31 in (1946) |
| September 19 | 97.0°F (1940) | 25.0°F (1991) | 4.10 in (1996) |
| September 20 | 96.1°F (1941) | 30.9°F (1983) | 1.30 in (1950) |
| September 21 | 98.1°F (1936) | 23.0°F (1983) | 1.25 in (1950) |
| September 22 | 98.1°F (1936) | 25.0°F (1983) | 1.26 in (2023) |
| September 23 | 100.0°F (1935) | 25.0°F (1989) | 1.70 in (2010) |
| September 24 | 93.9°F (1935) | 23.0°F (1942) | 2.35 in (2017) |
| September 25 | 95.0°F (1933) | 0.0°F (2002) | 1.85 in (2005) |
| September 26 | 97.0°F (1974) | 0.0°F (2002) | 2.46 in (1976) |
| September 27 | 99.0°F (1956) | 0.0°F (2002) | 0.42 in (1911) |
| September 28 | 89.1°F (1952) | 0.0°F (2002) | 1.05 in (2013) |
| September 29 | 96.1°F (1991) | 26.1°F (1945) | 2.22 in (1973) |
| September 30 | 97.0°F (1938) | 24.1°F (1974) | 1.48 in (1995) |