Roswell has a warm semi-arid climate with cool winters and very hot summers. In summer temperatures are expected to be or above on average around 30 days per year. In winter daytime temperatures are often between to and nights can be below freezing due to the city's high altitude. In the summer Roswell and the rest of New Mexico is effected by the North American Monsoon which can bring heavy rainfall and flooding. The highest temperature recorded in Roswell was 