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Las Vegas is located in the center of Vegas Valley, a desert region of about 600 square miles, which is surrounded by the Sierra Nevada Mountains and the Spring Mountains. The seasons are hot, windy, and dry, with desert conditions and maximum temperatures of 100 degrees F during the summer; because of the mountains, however, summer nights are cool. Winters are mild. The mountains around Las Vegas reach elevations of over 10,000 feet, acting as barriers to moisture from the Pacific Ocean. Rainfall is minimal and there are about 216 clear days during the year. Snowfall is rare.
| 113 square miles (2000) | |
| 2,180 feet above sea level | |
| January, 45.5° F; July, 91.1° F; annual average, 67.1° F | |
| 4.16 inches |
