Tongchuanshi, China experiences a distinct seasonal pattern. Winters are freezing and unpredictable, with temperatures often plummeting below -15°C in January and February, but occasionally rising above average. Spring arrives in March, bringing mild temperatures that gradually warm up to pleasant highs by April. Summer is hot and humid, with temperatures consistently above 30°C from May to July. As autumn sets in, temperatures cool down rapidly, returning to chilly lows by November, and remaining cold throughout the winter months.