live in Sweden and mine is out 24/7. never had a problem with the start button.
On the other hand........
- if very cold outside (like -6°C), no frost, no ice.
- if slightly cold during night (0° or slightly below like -1° or -2°) but warm during the day (10°), then morning dew will be visible and it's full of water. I use a cloth to clean it and remove the water.
I then used a cover (an old one from my car) and significantly reduced the dew and water. Still have to clean a bit, but not so much as without the cover.
And the range... yes it's affected by outside tempetature.
During cold weather the battery stays inside house, at room temperature. When riding in the morning, because battery is warm, the effect of cold is not visible.
But if stays outside, the % decreases much faster.
- morning, battery was inside at 90%.
- drove 5km and decreased to 85%.
- evening, battery stayed outside and discharged by itself to 79% (!!).
- drove back home same distance 5km, battery discharged to 69%.
So besides self discharge, i used double the energy compared when battery was warm.
The biggest problem (and that's why I'm waiting for min 5°C during night before riding again) is that tires are very bad quality.
If the road is just little slipery, then it's very easy to loose control.
I learnt to ride on roads where sun is visible from early hours in the morning, so at 8AM they are somehow dry, and avoid roads in shadows which will take longer to be at least a little dry.
And again, original tires are bad, probable for summer and not for ice/snow/frost/mud.