September weather in Winona, MO
The average temperature in Winona in September is 66.1°F (52.5°F–79.7°F). Average precipitation: 4.07 inches.
September is a fall month in Winona, and is warmer than the annual average of 54°F. Daily temperatures swing about 27.2°F between overnight low and afternoon high. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
79.7°F
Avg Low
52.5°F
Precipitation
4.07 in
Daylight
12h 13m
September records in Winona
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2013) | 46.0°F (2023) | 0.37 in (2020) |
| September 2 | 93.0°F (2011) | 46.0°F (2023) | 0.52 in (2020) |
| September 3 | 93.9°F (2011) | 48.9°F (2023) | 0.93 in (2022) |
| September 4 | 91.9°F (2011) | 51.1°F (2013) | 0.01 in (2022) |
| September 5 | 93.9°F (2023) | 52.0°F (2011) | 1.07 in (2021) |
| September 6 | 95.0°F (2014) | 43.0°F (2017) | 0.47 in (2025) |
| September 7 | 93.0°F (2012) | 39.0°F (2017) | 0.43 in (2018) |
| September 8 | 91.9°F (2012) | 37.9°F (2024) | 1.32 in (2018) |
| September 9 | 88.0°F (2015) | 37.0°F (2024) | 1.68 in (2015) |
| September 10 | 96.1°F (2013) | 37.9°F (2024) | 0.04 in (2015) |
| September 11 | 95.0°F (2013) | 39.9°F (2024) | 0.63 in (2011) |
| September 12 | 95.0°F (2025) | 42.1°F (2022) | 0.78 in (2023) |
| September 13 | 98.1°F (2025) | 39.0°F (2015) | 0.93 in (2024) |
| September 14 | 99.0°F (2025) | 43.0°F (2014) | 0.28 in (2011) |
| September 15 | 98.1°F (2025) | 42.1°F (2013) | 0.40 in (2011) |
| September 16 | 97.0°F (2025) | 45.0°F (2023) | 1.55 in (2024) |
| September 17 | 95.0°F (2025) | 48.9°F (2023) | 1.35 in (2016) |
| September 18 | 96.1°F (2025) | 45.0°F (2023) | 0.72 in (2011) |
| September 19 | 96.1°F (2025) | 37.9°F (2012) | 1.02 in (2017) |
| September 20 | 95.0°F (2022) | 39.0°F (2012) | 0.15 in (2013) |
| September 21 | 96.1°F (2022) | 42.1°F (2020) | 0.36 in (2012) |
| September 22 | 96.1°F (2022) | 42.1°F (2013) | 0.36 in (2018) |
| September 23 | 91.9°F (2017) | 36.0°F (2012) | 0.99 in (2018) |
| September 24 | 90.0°F (2017) | 37.9°F (2021) | 0.82 in (2025) |
| September 25 | 91.0°F (2022) | 37.9°F (2021) | 2.69 in (2011) |
| September 26 | 89.1°F (2012) | 37.0°F (2011) | 0.58 in (2019) |
| September 27 | 89.1°F (2017) | 37.0°F (2022) | 2.35 in (2012) |
| September 28 | 90.0°F (2021) | 37.9°F (2022) | 1.28 in (2020) |
| September 29 | 90.0°F (2023) | 34.0°F (2022) | 0.53 in (2012) |
| September 30 | 91.0°F (2023) | 34.0°F (2022) | 0.02 in (2015) |