Sagamihara experiences cold winters with temperatures often dropping below -30°C, but brief warm spells can bring temperatures up to around 20°C. Spring is a gradual warming period, with temperatures rising from around freezing in March to mild highs of 26°C by April. Summer months are hot and humid, with July and August seeing average temperatures above 22°C, although occasional heatwaves can push temperatures into the mid-30s. Autumn brings a return to cooler temperatures, with September's warm spells giving way to chilly nights by October. Winter returns in December, mirroring January's frigid conditions, but still allowing for occasional mild days.