[majewsky]

> Below 14°C? [...] in the winter

It doesn't take winter for temperatures to drop below 14 °C (57.2 °F). The morning commute takes place between 6 and 9 AM. Even in the summer, temperatures are probably below 14 °C more often than above it at these times.

[nisa]

Indeed the Umweltbundesamt PDF (see my other comment) states that it's at least 50% of the time the case! 50%!