The climate of the Coachella Valley is influenced by the surrounding geography. High mountain ranges on three sides and a south-sloping valley floor all contribute to its year-round warm climate, with the warmest winters in the western United States. Palm Desert has a tropical desert climate: Its average annual high temperature is 89 °F (32 °C) and average annual low is 62 °
(17 °C), but summer highs above 108 °F (42 °C) are common and sometimes exceed 120 °F (49 °C), while summer night lows often stay above 82 °F (28 °C). Winters are warm with daytime highs between 73–84 °F (23–29 °C). Under 5 inches (130 mm) of annual precipitation are average, with over 348 days of sunshine per year.