September weather in Slinger, WI
The average temperature in Slinger in September is 59.9°F (48.7°F–71.2°F). Average precipitation: 3.20 inches.
September is a fall month in Slinger, and is warmer than the annual average of 44.4°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
71.2°F
Avg Low
48.7°F
Precipitation
3.20 in
Daylight
12h 17m
September records in Slinger
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 88.0°F (2012) | 43.0°F (2022) | 0.89 in (2010) |
| September 2 | 89.1°F (2011) | 41.0°F (2017) | 0.57 in (2018) |
| September 3 | 87.1°F (2011) | 42.1°F (2017) | 0.75 in (2018) |
| September 4 | 91.0°F (2023) | 37.0°F (2025) | 0.41 in (2018) |
| September 5 | 89.1°F (2023) | 37.9°F (2025) | 0.28 in (2012) |
| September 6 | 86.0°F (2023) | 39.0°F (2011) | 1.49 in (2018) |
| September 7 | 88.0°F (2016) | 35.1°F (2025) | 1.30 in (2016) |
| September 8 | 82.0°F (2015) | 37.0°F (2024) | 1.04 in (2016) |
| September 9 | 82.0°F (2022) | 41.0°F (2023) | 0.61 in (2020) |
| September 10 | 86.0°F (2013) | 42.1°F (2010) | 1.17 in (2019) |
| September 11 | 91.0°F (2013) | 42.1°F (2014) | 0.35 in (2023) |
| September 12 | 82.9°F (2019) | 39.0°F (2014) | 3.08 in (2022) |
| September 13 | 84.0°F (2011) | 35.1°F (2014) | 0.72 in (2019) |
| September 14 | 80.1°F (2024) | 36.0°F (2013) | 0.54 in (2021) |
| September 15 | 84.0°F (2024) | 30.0°F (2011) | 0.05 in (2013) |
| September 16 | 86.0°F (2024) | 33.1°F (2011) | 0.52 in (2013) |
| September 17 | 87.1°F (2024) | 33.1°F (2014) | 0.19 in (2016) |
| September 18 | 86.0°F (2018) | 37.0°F (2014) | 1.64 in (2015) |
| September 19 | 84.9°F (2025) | 30.0°F (2012) | 0.64 in (2011) |
| September 20 | 86.0°F (2024) | 33.1°F (2020) | 1.12 in (2016) |
| September 21 | 86.0°F (2017) | 37.0°F (2012) | 0.81 in (2021) |
| September 22 | 84.9°F (2024) | 33.1°F (2014) | 1.38 in (2024) |
| September 23 | 91.0°F (2017) | 30.0°F (2012) | 1.16 in (2019) |
| September 24 | 91.0°F (2017) | 30.0°F (2012) | 0.10 in (2010) |
| September 25 | 88.0°F (2017) | 34.0°F (2012) | 0.56 in (2011) |
| September 26 | 89.1°F (2017) | 37.0°F (2010) | 1.57 in (2023) |
| September 27 | 84.0°F (2017) | 33.1°F (2010) | 1.32 in (2023) |
| September 28 | 82.9°F (2025) | 33.1°F (2012) | 0.28 in (2011) |
| September 29 | 78.1°F (2013) | 30.0°F (2022) | 0.82 in (2019) |
| September 30 | 84.9°F (2025) | 30.9°F (2018) | 0.83 in (2011) |