September weather in Buffalo, SD
The average temperature in Buffalo in September is 60.6°F (46.3°F–74.9°F). Average precipitation: 1.13 inches.
September is a fall month in Buffalo, and is warmer than the annual average of 45.5°F. Daily temperatures swing about 28.6°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
74.9°F
Avg Low
46.3°F
Precipitation
1.13 in
Daylight
12h 18m
September records in Buffalo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2004) | 44.1°F (2006) | 0.21 in (2009) |
| September 2 | 102.0°F (2024) | 39.0°F (2006) | 0.08 in (1999) |
| September 3 | 100.9°F (2023) | 37.0°F (2008) | 0.23 in (2008) |
| September 4 | 105.1°F (2022) | 37.9°F (2011) | 0.86 in (2023) |
| September 5 | 100.9°F (2001) | 37.9°F (2025) | 0.76 in (2023) |
| September 6 | 98.1°F (2013) | 34.0°F (2025) | 0.29 in (2010) |
| September 7 | 102.9°F (2022) | 37.9°F (2004) | 0.43 in (2013) |
| September 8 | 93.0°F (2005) | 32.0°F (2020) | 1.23 in (2013) |
| September 9 | 97.0°F (2024) | 27.1°F (2020) | 0.29 in (2022) |
| September 10 | 97.0°F (2021) | 35.1°F (2020) | 2.29 in (2003) |
| September 11 | 96.1°F (2024) | 34.0°F (2014) | 0.36 in (2019) |
| September 12 | 98.1°F (2017) | 29.1°F (2014) | 0.57 in (2019) |
| September 13 | 93.0°F (2017) | 31.1°F (2014) | 1.67 in (1998) |
| September 14 | 90.0°F (2009) | 26.2°F (2007) | 0.82 in (2025) |
| September 15 | 95.0°F (2002) | 34.0°F (1999) | 1.86 in (2017) |
| September 16 | 96.1°F (2002) | 37.0°F (2006) | 0.04 in (2003) |
| September 17 | 95.0°F (2000) | 35.1°F (2006) | 0.31 in (2003) |
| September 18 | 98.1°F (2004) | 33.1°F (2006) | 0.65 in (2015) |
| September 19 | 93.0°F (2022) | 31.1°F (2006) | 0.21 in (1998) |
| September 20 | 87.1°F (2005) | 34.0°F (2006) | 0.74 in (2018) |
| September 21 | 84.9°F (2015) | 33.1°F (2002) | 0.09 in (2006) |
| September 22 | 93.0°F (2007) | 30.0°F (2000) | 0.96 in (2006) |
| September 23 | 89.1°F (2011) | 27.0°F (2000) | 0.46 in (2017) |
| September 24 | 89.1°F (2011) | 24.1°F (2000) | 0.25 in (2016) |
| September 25 | 93.9°F (2014) | 32.0°F (2000) | 0.06 in (2013) |
| September 26 | 97.0°F (2024) | 28.9°F (2002) | 0.16 in (2020) |
| September 27 | 97.0°F (2021) | 32.0°F (1999) | 0.27 in (2005) |
| September 28 | 98.1°F (2021) | 30.0°F (1999) | 0.58 in (2019) |
| September 29 | 100.9°F (2024) | 30.0°F (1999) | 0.29 in (2019) |
| September 30 | 87.1°F (2025) | 30.9°F (2003) | 1.54 in (2014) |