Chuxiong experiences a mild dry-winter humid subtropical climate , bordering on a dry-winter subtropical highland climate . Winters are mild, dry and sunny, although average lows in January reach barely above freezing. Spring begins early and remains dry and sunny until late May, when there is a dramatic uptick in the frequency and amount of rainfall lasting until late September. Summers are warm, rainy and generally overcast, with June, the warmest month, averaging 21.4 °C (70.5 °F). Autumn sees an abrupt reduction in rainfall and a return to clear skies.