Shirosato has a Humid continental climate (Köppen Cfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Shirosato is 13.6 °C. The average annual rainfall is 1390 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.2 °C, and lowest in January, at around 2.8 °C.[2]