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This climate type is characterized by extremely variable temperature conditions, with annual means decreasing and annual ranges increasing poleward, and relatively little precipitation. This climate is typically located deep within the interiors of continents and is contiguous with the tropical desert climates of North and South America and of central Asia. This region type owes its origins to locations deep within continental interiors, far from the windward coasts and sources of moist, maritime air. Remoteness from sources of water vapor is enhanced in some regions by mountain barriers upwind.
The Köppen Climate Classification subtype for this climate is "Bsh". (Mid-Latitude Steppe and Desert Climate).
The average temperature for the year in St. George is 69.0°F (20.6°C). The warmest month, on average, is January with an average temperature of 82.0°F (27.8°C). The coolest month on average is July, with an average temperature of 53.0°F (11.7°C).
The highest recorded temperature in St. George is 113.0°F (45°C), which was recorded in January. The lowest recorded temperature in St. George is 28.0°F (-2.2°C), which was recorded in June.
The average amount of precipitation for the year in St. George is 20.0" (508 mm). The month with the most precipitation on average is January with 2.0" (50.8 mm) of precipitation. The month with the least precipitation on average is August with an average of 0.0" (0 mm). In terms of liquid precipitation, there are an average of 54.5 days of rain, with the most rain occurring in January with 6.3 days of rain, and the least rain occurring in April with 3.2 days of rain.