The weather in Bolton is changeable!
Summer months can be sunny and warm (25º C/77º F). However throughout the Spring, Autumn and Winter you should be prepared for rain – though not every day of course!
Winter can be quite cold (0º C/32º F). You'll need a warm jacket or coat, hat, scarf and gloves. Bolton winters are rarely harsh but it is chilly, and it is good to be prepared with jumpers and a fleece.
A waterproof jacket or rain coat is essential for those days when there is rain but it's not so cold.