Folsom's climate is characterized by mild winters with temperatures ranging from just below freezing in January and December to cool but not cold, allowing for some winter activities like hiking. As spring approaches, temperatures gradually warm up, with April and May being the first months to see consistent highs above 20 C. Summer is hot, with July often reaching its peak temperature of around 43 C, though it's not uncommon for the mercury to dip into the mid-10s at night. Autumn brings a gentle cooling trend, with temperatures returning to spring-like levels by October, only to drop again in November and December. Overall, Folsom's climate is quite temperate, with temperatures rarely dropping below 0 C or rising above 40 C for more than short periods.