September weather in Markesan, WI
The average temperature in Markesan in September is 60.4°F (48.4°F–72.4°F). Average precipitation: 3.27 inches.
September is a fall month in Markesan, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
72.4°F
Avg Low
48.4°F
Precipitation
3.27 in
Daylight
12h 17m
September records in Markesan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 86.0°F (2012) | 39.0°F (2009) | 0.86 in (2010) |
| September 2 | 91.0°F (2011) | 39.0°F (2009) | 1.80 in (2018) |
| September 3 | 89.1°F (2008) | 42.1°F (2013) | 0.86 in (2011) |
| September 4 | 93.0°F (2023) | 37.9°F (2025) | 0.70 in (2018) |
| September 5 | 91.9°F (2023) | 37.9°F (2025) | 0.76 in (2008) |
| September 6 | 89.1°F (2007) | 37.0°F (2011) | 0.49 in (2018) |
| September 7 | 90.0°F (2016) | 36.0°F (2025) | 4.09 in (2016) |
| September 8 | 88.0°F (2013) | 37.0°F (2025) | 0.42 in (2007) |
| September 9 | 84.0°F (2016) | 39.0°F (2008) | 1.29 in (2015) |
| September 10 | 89.1°F (2013) | 39.9°F (2008) | 1.24 in (2019) |
| September 11 | 91.9°F (2013) | 39.9°F (2008) | 1.34 in (2022) |
| September 12 | 84.0°F (2011) | 37.9°F (2007) | 2.06 in (2022) |
| September 13 | 84.9°F (2024) | 37.9°F (2007) | 1.58 in (2019) |
| September 14 | 84.0°F (2009) | 37.0°F (2013) | 0.35 in (2021) |
| September 15 | 86.0°F (2024) | 30.0°F (2007) | 0.28 in (2008) |
| September 16 | 88.0°F (2018) | 33.1°F (2014) | 0.45 in (2013) |
| September 17 | 88.0°F (2024) | 33.1°F (2014) | 0.18 in (2023) |
| September 18 | 89.1°F (2018) | 36.0°F (2014) | 0.42 in (2015) |
| September 19 | 89.1°F (2018) | 33.1°F (2012) | 0.91 in (2015) |
| September 20 | 86.0°F (2021) | 39.9°F (2020) | 0.75 in (2019) |
| September 21 | 88.0°F (2017) | 39.9°F (2012) | 1.24 in (2017) |
| September 22 | 84.9°F (2017) | 35.1°F (2014) | 2.04 in (2024) |
| September 23 | 89.1°F (2017) | 34.0°F (2012) | 0.46 in (2009) |
| September 24 | 90.0°F (2017) | 33.1°F (2012) | 0.29 in (2010) |
| September 25 | 88.0°F (2017) | 33.1°F (2012) | 0.63 in (2020) |
| September 26 | 88.0°F (2017) | 37.9°F (2010) | 1.55 in (2023) |
| September 27 | 81.0°F (2008) | 33.1°F (2010) | 0.63 in (2011) |
| September 28 | 82.9°F (2025) | 33.1°F (2010) | 0.39 in (2020) |
| September 29 | 81.0°F (2014) | 32.0°F (2018) | 0.65 in (2015) |
| September 30 | 86.0°F (2025) | 30.0°F (2009) | 0.72 in (2011) |