Riverside experiences a mild Mediterranean climate with distinct seasonal variations. Winters are cool, with temperatures ranging from freezing to mild, averaging around 14°C in January and 8°C in December. Spring brings gradual warming, with April and May averages reaching up to 17°C. Summer is hot and dry, with July and August temperatures often soaring above 40°C. Autumn sees a return to milder conditions, with October and November averages returning to the mid-teens, setting the stage for another cool winter.