Tochigi's winters are chilly, with temperatures ranging from -7°C to 18°C, averaging around 4°C in January. Spring brings moderate warmth, with March and April average highs around 11°C and 14°C respectively, while May marks the beginning of warmer days with averages reaching 19°C. Summer months are hot, especially July and August, with temperatures often exceeding 30°C, although the mercury sometimes dips below 20°C. Autumn is mild, with October being a pleasant month, averaging around 17°C, before temperatures drop to around 12°C in November. Winters return in December, with temperatures ranging from -6°C to 20°C.