September weather in Gillett, WI
The average temperature in Gillett in September is 58.1°F (46.7°F–69.5°F). Average precipitation: 3.47 inches.
September is a fall month in Gillett, and is warmer than the annual average of 42.6°F. Daily temperatures swing about 22.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
69.5°F
Avg Low
46.7°F
Precipitation
3.47 in
Daylight
12h 18m
September records in Gillett
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2000) | 39.0°F (2009) | 1.24 in (2000) |
| September 2 | 89.1°F (2008) | 41.0°F (2009) | 0.80 in (2002) |
| September 3 | 89.1°F (2008) | 42.1°F (2009) | 1.33 in (2010) |
| September 4 | 93.9°F (2023) | 39.0°F (2025) | 0.93 in (2019) |
| September 5 | 90.0°F (2023) | 39.0°F (2010) | 3.33 in (2014) |
| September 6 | 90.0°F (2007) | 37.9°F (2011) | 0.75 in (2023) |
| September 7 | 87.1°F (1998) | 39.9°F (2011) | 1.69 in (2015) |
| September 8 | 87.1°F (2002) | 39.0°F (2025) | 0.91 in (2001) |
| September 9 | 88.0°F (2002) | 35.1°F (2008) | 2.18 in (2015) |
| September 10 | 90.0°F (2002) | 36.0°F (2008) | 0.76 in (2019) |
| September 11 | 88.0°F (2005) | 35.1°F (2020) | 1.33 in (2000) |
| September 12 | 91.0°F (1998) | 35.1°F (2020) | 0.91 in (2006) |
| September 13 | 88.0°F (2005) | 37.9°F (2014) | 1.35 in (2003) |
| September 14 | 84.9°F (1998) | 36.0°F (2001) | 2.13 in (2003) |
| September 15 | 81.0°F (2009) | 28.9°F (2007) | 1.04 in (1998) |
| September 16 | 84.0°F (2024) | 32.0°F (2000) | 1.14 in (2010) |
| September 17 | 84.0°F (2024) | 32.0°F (2011) | 0.86 in (2016) |
| September 18 | 84.9°F (2018) | 33.1°F (2000) | 0.65 in (2015) |
| September 19 | 82.9°F (2000) | 30.9°F (2012) | 0.89 in (2011) |
| September 20 | 82.9°F (1998) | 35.1°F (2012) | 1.13 in (2019) |
| September 21 | 82.0°F (2005) | 30.9°F (1999) | 1.05 in (2002) |
| September 22 | 84.9°F (2005) | 32.0°F (1999) | 0.72 in (2016) |
| September 23 | 84.9°F (2017) | 30.9°F (1998) | 1.92 in (2010) |
| September 24 | 87.1°F (2017) | 32.0°F (1998) | 1.37 in (2010) |
| September 25 | 87.1°F (2007) | 30.0°F (2000) | 0.40 in (2019) |
| September 26 | 87.1°F (2017) | 30.9°F (2000) | 1.33 in (2016) |
| September 27 | 81.0°F (1999) | 33.1°F (2012) | 0.86 in (2011) |
| September 28 | 79.0°F (2004) | 32.0°F (2000) | 0.42 in (2009) |
| September 29 | 79.0°F (2014) | 28.9°F (2003) | 0.95 in (2005) |
| September 30 | 78.1°F (1998) | 28.9°F (2004) | 0.49 in (2011) |