Weather in Winterthur in September
The weather in Winterthur in September is relatively comfortable for a trip in terms of degrees (11-19), but it might be rainy (around 14 rainfall days) so it is important to prepare yourself with an umbrella and raincoat.
Avg Temp
11° - 19°
Avg Rainy Days
14
![](https://weather-finder.com/img/rain.jpg)
Avg Dry Days
16
![](https://weather-finder.com/img/sun.png)
Avg Snow Days
0
Weather Facts - Winterthur in September
* The warmest temperature recorded in in September is 28°C
* The coldest temperature recorded in Winterthur in September is 2°C
* The average rainfall in Winterthur in September is 94 mm