The answer depend of the country where you stay. The winter in South of Italy is very different in comparation with Finland. If the weather is very cool, then you will prefer stay at home, and go out only if is strictly necessary. There are countries near the ecuador of Earth, that have not so much differece from summer and winter, and the temperature depend much more of the altitude.
In my city, the winter usually is hot, about 5º Celsius, but not far in the countryside, the temperature can down to -10º easily. Pollution is one of causes to explain this differences.