Guatemala has a tropical climate, but the temperatures and rainfall can vary greatly within different regions, especially due to different altitudes. The lowland and coastal areas are typically the warmest parts of the country—they have an average annual temperature around 80°F (27°C), but during the months of March and April, the temperature can hang around 100°F (38°C). In the valleys between mountains, which range from 4,000–6,000 feet (1,200–1,800 m), the temperature is usually mild. Big cities like Quetzaltenango, Guatemala City, and Antigua are found here, and tend to enjoy comfortable temperatures around 60°F–70°F (16°C–21°C) all year. Atop mountains and volcanoes, the temperature can drop to below freezing.