Dagenham's winters are chilly, with temperatures often below freezing in January and February, averaging around 4-6°C. As spring approaches, the mercury slowly rises, with March marking a turning point towards milder weather, reaching up to 23°C on warmer days. Summers are warm but not hot, with highs rarely exceeding 30°C, while autumns bring some welcome warmth after the cold winter months. In contrast, winters can feel harsh, with temperatures dipping below -4°C in December and January. The year's mildest spell is typically during June and July, when average highs reach around 17-18°C.