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Saint Louis — weather in September, water temperature

32.3°C Daytime temperatures 27.5°C Night temperatures 20 Sunny days 12-12.4 Sun (hours) 6 Rainy days 87 mm Precipitation 28.6°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 41°C — 5 September 2016.
The maximum night temperature 31.3°C — 20 September 2015.
The minimum daily temperature 27°C — 24 September 2021.
The minimum night temperature 25°C — 1 September 2021.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The warmest water 29.8 °C — 16 September 2019. The coldest water 27.1 °C — 11 September 2018.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 87 mm — September. Minimum precipitation 0.2 mm — November.
Wind speed, km / h
Maximum wind speed 24.3 km / h — April. Minimum wind speed 17.8 km / h — September.
Number of hours of sunshine
The maximum number of hours of sunshine per day 12.2 h. — May. The minimum number of hours of sunshine per day 8.2 h. — August.
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