Chinju's winters are typically cold and unpredictable, with temperatures often dropping below freezing in January and February, but rising to mild highs by March. Spring arrives in April, bringing warmer temperatures that gradually increase throughout the month. Summer is hot and humid, with July being the warmest month, while August's heat is slightly tempered by a slight decrease in average temperature. Autumn sees a return to cooler temperatures in October, followed by a chillier November, before winter sets back in.