September weather in Wilmot, SD
The average temperature in Wilmot in September is 60.4°F (47.9°F–72.9°F). Average precipitation: 2.34 inches.
September is a fall month in Wilmot, and is warmer than the annual average of 43.2°F. Daily temperatures swing about 25°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
72.9°F
Avg Low
47.9°F
Precipitation
2.34 in
Daylight
12h 18m
September records in Wilmot
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2013) | 46.0°F (2009) | 1.93 in (1957) |
| September 2 | 95.0°F (2022) | 45.0°F (2009) | 4.15 in (2006) |
| September 3 | 90.0°F (2023) | 39.9°F (2008) | 2.35 in (2021) |
| September 4 | 97.0°F (2023) | 39.9°F (2008) | 1.12 in (1999) |
| September 5 | 98.1°F (2023) | 42.1°F (2025) | 0.78 in (2004) |
| September 6 | 91.9°F (2007) | 43.0°F (2017) | 1.22 in (2004) |
| September 7 | 91.0°F (2013) | 37.9°F (2025) | 1.18 in (2010) |
| September 8 | 90.0°F (2022) | 37.9°F (2020) | 1.30 in (1985) |
| September 9 | 86.0°F (2006) | 35.1°F (2020) | 1.64 in (1991) |
| September 10 | 86.0°F (2024) | 35.1°F (2020) | 0.98 in (2019) |
| September 11 | 90.0°F (2012) | 36.0°F (2020) | 0.35 in (1977) |
| September 12 | 88.0°F (2011) | 35.1°F (2007) | 1.90 in (2019) |
| September 13 | 90.0°F (2017) | 35.1°F (2007) | 1.21 in (1964) |
| September 14 | 91.9°F (2017) | 36.0°F (2011) | 1.13 in (1954) |
| September 15 | 87.1°F (2025) | 30.0°F (2011) | 0.86 in (2001) |
| September 16 | 95.0°F (2018) | 30.0°F (2011) | 1.25 in (2010) |
| September 17 | 93.9°F (2018) | 39.0°F (2008) | 0.75 in (2004) |
| September 18 | 89.1°F (2019) | 32.0°F (2012) | 0.65 in (1990) |
| September 19 | 84.9°F (2024) | 37.0°F (2020) | 1.64 in (1988) |
| September 20 | 93.0°F (2023) | 35.1°F (2012) | 1.70 in (2007) |
| September 21 | 87.1°F (2019) | 33.1°F (2006) | 2.60 in (1989) |
| September 22 | 88.0°F (2015) | 30.0°F (2012) | 0.75 in (1968) |
| September 23 | 89.1°F (2017) | 30.0°F (2011) | 0.74 in (1977) |
| September 24 | 90.0°F (2007) | 34.0°F (2011) | 1.80 in (2023) |
| September 25 | 81.0°F (2013) | 34.0°F (2011) | 0.56 in (1986) |
| September 26 | 84.9°F (2014) | 33.1°F (2012) | 1.09 in (2009) |
| September 27 | 90.0°F (2021) | 35.1°F (2012) | 0.64 in (1975) |
| September 28 | 84.9°F (2015) | 32.0°F (2022) | 1.84 in (2013) |
| September 29 | 90.0°F (2021) | 28.9°F (2018) | 0.94 in (1965) |
| September 30 | 91.9°F (2025) | 34.0°F (2006) | 1.48 in (1995) |