September weather in Cedar Grove, WI
The average temperature in Cedar Grove in September is 60.8°F (50.3°F–71.4°F). Average precipitation: 2.75 inches.
September is a fall month in Cedar Grove, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
71.4°F
Avg Low
50.3°F
Precipitation
2.75 in
Daylight
12h 17m
September records in Cedar Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 84.9°F (2010) | 46.9°F (2019) | 0.40 in (2010) |
| September 2 | 82.0°F (2013) | 43.0°F (2017) | 0.68 in (2018) |
| September 3 | 86.0°F (2023) | 44.1°F (2017) | 1.20 in (2018) |
| September 4 | 91.9°F (2023) | 41.0°F (2025) | 0.32 in (2011) |
| September 5 | 88.0°F (2018) | 44.1°F (2010) | 0.03 in (2011) |
| September 6 | 86.0°F (2015) | 43.0°F (2011) | 1.05 in (2018) |
| September 7 | 90.0°F (2016) | 42.1°F (2025) | 2.70 in (2016) |
| September 8 | 84.0°F (2013) | 42.1°F (2025) | 2.00 in (2016) |
| September 9 | 82.0°F (2022) | 43.0°F (2017) | 0.56 in (2015) |
| September 10 | 80.1°F (2022) | 43.0°F (2010) | 0.95 in (2019) |
| September 11 | 91.9°F (2013) | 42.1°F (2014) | 0.65 in (2023) |
| September 12 | 84.0°F (2013) | 39.9°F (2014) | 1.52 in (2022) |
| September 13 | 84.0°F (2011) | 39.9°F (2014) | 1.35 in (2019) |
| September 14 | 82.9°F (2012) | 39.9°F (2014) | 0.50 in (2021) |
| September 15 | 78.1°F (2018) | 36.0°F (2011) | 0.08 in (2013) |
| September 16 | 78.1°F (2018) | 39.0°F (2014) | 0.40 in (2013) |
| September 17 | 80.1°F (2017) | 39.0°F (2013) | 0.23 in (2016) |
| September 18 | 88.0°F (2018) | 42.1°F (2014) | 0.72 in (2015) |
| September 19 | 80.1°F (2022) | 32.0°F (2012) | 0.30 in (2015) |
| September 20 | 81.0°F (2016) | 35.1°F (2020) | 0.30 in (2018) |
| September 21 | 82.9°F (2017) | 41.0°F (2012) | 1.50 in (2021) |
| September 22 | 82.0°F (2017) | 36.0°F (2014) | 0.58 in (2024) |
| September 23 | 88.0°F (2017) | 37.0°F (2013) | 0.81 in (2024) |
| September 24 | 84.9°F (2010) | 34.0°F (2012) | 0.35 in (2011) |
| September 25 | 87.1°F (2017) | 34.0°F (2012) | 0.60 in (2011) |
| September 26 | 84.0°F (2017) | 41.0°F (2011) | 1.10 in (2011) |
| September 27 | 88.0°F (2017) | 37.9°F (2010) | 0.45 in (2023) |
| September 28 | 82.9°F (2025) | 37.9°F (2010) | 0.25 in (2019) |
| September 29 | 79.0°F (2014) | 33.1°F (2018) | 0.40 in (2015) |
| September 30 | 75.0°F (2024) | 32.0°F (2018) | 0.43 in (2015) |