You can get a lot of good clothing in bike shops that you can wear over your normal clothes (shoes, trousers). Very good gloves, since your hands will freeze fi

You can get a lot of good clothing in bike shops that you can wear over your normal clothes (shoes, trousers). Very good gloves, since your hands will freeze first. A backpack to store the clothes when the weather changes. (best if your laptop can fit into it if you need to take it with you.) I have a backpack with a kind of raincoat, that can be pulled over it. Saved my laptop several times. Take a few plastic bags with you, when it rains heavily you can protect your equipment.) good lighting equipment and reflectors are important if you bike in rain or darkness.