Chelmsford's winters are cool and unpredictable, with temperatures fluctuating between freezing and mild. As the seasons shift into spring, temperatures gradually rise, with March often seeing a significant increase to around 22°C. Summers are warm but not hot, with July typically being the warmest month, averaging around 17°C. Autumn brings cooler temperatures again, but still relatively mild compared to winter, while spring and autumn have similar temperature ranges, oscillating between 5-16°C on average.