September weather in Byron, MN
The average temperature in Byron in September is 59.4°F (46.8°F–72.0°F). Average precipitation: 3.47 inches.
September is a fall month in Byron, and is warmer than the annual average of 43.3°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
72.0°F
Avg Low
46.8°F
Precipitation
3.47 in
Daylight
12h 17m
September records in Byron
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (2000) | 39.0°F (1994) | 0.61 in (2014) |
| September 2 | 90.0°F (2011) | 39.0°F (2009) | 0.39 in (2000) |
| September 3 | 91.0°F (1999) | 39.0°F (1997) | 0.37 in (2006) |
| September 4 | 91.0°F (1999) | 39.9°F (2003) | 1.04 in (2005) |
| September 5 | 90.0°F (2012) | 37.9°F (2011) | 0.59 in (2012) |
| September 6 | 89.1°F (1998) | 37.9°F (2011) | 0.45 in (2002) |
| September 7 | 91.0°F (2003) | 39.0°F (1993) | 2.30 in (2007) |
| September 8 | 91.0°F (2003) | 32.0°F (1995) | 1.10 in (2015) |
| September 9 | 91.0°F (2002) | 32.0°F (1995) | 0.80 in (2016) |
| September 10 | 90.0°F (2013) | 34.0°F (2008) | 0.65 in (2014) |
| September 11 | 86.0°F (1994) | 35.1°F (1993) | 0.20 in (2008) |
| September 12 | 91.0°F (1998) | 34.0°F (2007) | 0.35 in (1994) |
| September 13 | 91.9°F (1998) | 30.0°F (2014) | 1.27 in (2005) |
| September 14 | 91.0°F (1998) | 28.0°F (1996) | 1.78 in (1993) |
| September 15 | 87.1°F (1994) | 27.0°F (2011) | 4.55 in (2004) |
| September 16 | 84.9°F (2017) | 28.0°F (2011) | 1.65 in (2010) |
| September 17 | 84.9°F (2003) | 33.1°F (1995) | 1.13 in (2006) |
| September 18 | 88.0°F (1998) | 33.1°F (2012) | 0.93 in (2015) |
| September 19 | 88.0°F (2000) | 34.0°F (2012) | 1.42 in (2003) |
| September 20 | 90.0°F (1998) | 30.9°F (2006) | 0.66 in (1993) |
| September 21 | 82.9°F (2010) | 27.0°F (1999) | 0.98 in (1994) |
| September 22 | 84.9°F (2005) | 28.9°F (1995) | 2.62 in (2016) |
| September 23 | 91.0°F (2017) | 24.1°F (2012) | 4.91 in (2010) |
| September 24 | 88.0°F (2017) | 24.1°F (2012) | 2.44 in (2010) |
| September 25 | 88.0°F (2017) | 26.1°F (2000) | 2.50 in (2005) |
| September 26 | 81.0°F (1998) | 28.0°F (2012) | 0.64 in (2009) |
| September 27 | 84.9°F (1998) | 26.1°F (2005) | 0.44 in (1996) |
| September 28 | 81.0°F (2013) | 28.0°F (2012) | 0.20 in (2009) |
| September 29 | 80.1°F (1995) | 28.0°F (2003) | 0.46 in (2005) |
| September 30 | 81.0°F (2000) | 27.0°F (1993) | 0.65 in (2007) |