St. George's arid climate is significantly warmer on average than the rest of the state, and more closely resembles nearby Las Vegas. The climate (Köppen "BWk") features hot summers and relatively mild winters. The monthly average temperature ranges from in December to in July. On average, there are 60 afternoons with high temperatures over , with an average window of June 29 through August 13, and 122 days with high temperatures over with the average window fluctuating between late April and early October. There are approximately 60 mornings where the low temperature drops to the freezing mark, with the historical average window between November 12 and March 14.