Franco da Rocha experiences mild winters, with temperatures ranging from around 1-9°C in June and July. Spring arrives in September, bringing warmer temperatures up to 37°C, but still quite pleasant overall. Summer months of October to December are warm to hot, with highs often reaching the mid-to-high 30s Celsius. Autumn is characterized by a slight cooling trend, with temperatures dipping back into the mid-teens Celsius. Throughout the year, the diurnal temperature range is relatively moderate, with average highs around 20-23°C for most months.