Winters in Nonoichi, Japan are quite cold, with temperatures often below freezing and averaging around 2-5°C. Spring brings a steady warming trend, with temperatures gradually increasing into the mid-teens by May. Summer is hot and humid, with July and August being the warmest months, often reaching highs above 30°C. Autumn is mild, with temperatures cooling back down to around 10-15°C by November. Frosts are not uncommon during the winter months, while summer days can be sweltering.