Which state has the driest climate?

The state with the driest climate in the United States is Nevada. The state has a desert climate, with very low levels of precipitation and high evaporation rates. The average annual precipitation in Nevada is only 7 inches, and some parts of the state receive less than 2 inches of rain per year. The low levels of precipitation are due to the state's location in the rain shadow of the Sierra Nevada mountains. The Sierra Nevada mountains block the flow of moisture from the Pacific Ocean, and the air that reaches Nevada is dry. The high evaporation rates in Nevada are due to the high temperatures and low humidity. The average annual temperature in Nevada is 57 degrees Fahrenheit, and the average relative humidity is 35%. The combination of low precipitation and high evaporation rates makes Nevada the driest state in the United States.