Winters in Toyomamachi-teraike are cold and variable, with temperatures often below freezing in January and February, but occasionally rising into the mid-teens. Spring is a gradual warming period, with temperatures steadily increasing from March to May. Summer brings warmth, with July and August typically seeing highs around 30°C, although cooler days can occur. Autumn is mild, with temperatures returning to more seasonal levels by October, before dipping again in November and December.