West Covina has mild winters, with temperatures rarely dipping below 6°C in February, the coldest month. Spring arrives in March, bringing warmer days that can reach up to 29°C, but also sees cooler mornings around 3°C. Summer is hot and dry, with July being the warmest month, averaging 25°C, while autumn brings a slight cool-down, with temperatures ranging from 9°C to 34°C in October. Winters are generally mild, with temperatures fluctuating between 5°C and 28°C in December.