In the mountainous areas of Arunachal Pradesh, the Himalayan ranges in the northern border with India and China experience the lowest temperatures with heavy snow during winter and temperatures that drop below freezing. Areas with altitudes exceeding receive snowfall during winters and have cool summers. Below above sea level, winter temperatures reach up to during the day with nights dropping to zero while summers are cool, with a mean maximum of and a mean minimum of . In the hilly areas of Meghalaya, Nagaland, Manipur and Mizoram, winters are cold while summers are cool.