Winters in Walton upon Thames are typically mild and variable, with temperatures often dropping below freezing point but occasionally rising into double digits. Spring brings a slow warming trend, with March marking the beginning of more consistent warmer days. Summers are warm to hot, with July usually being the hottest month, while August can be somewhat cooler. Autumn sees a gradual cooling down, with temperatures dipping towards winter levels by November. The coldest months are January and December, often experiencing frosty mornings.