The desert is a land of extreme and Moab's temperature range attests to that. Temperatures have been reported as high as 113 degrees and as low as -25 degrees Fahrenheit .
In spite of the intense heat which visits Moab each summer, the climate is generally categorized as "temperate." The frost-free period in Moab averages 184 days per year. Rainfall averages only eight inches per year with October being the wettest month followed by March, July and April.
During the summer, Moab is prone to sudden brief, violent thunderstorms that often result in flash floods. Plant life in Moab is typical of that in a high or sub-desert (primarily Upper Sonoran) life zone and includes sagebrush, rabbitbrush, saltbush, serviceberry, mountain mahogany, and other desert natives at the lower elevations. Juniper and pinion occur with desert shrubs until about 7,500 feet elevation where a mountain ecosystem of aspen, spruce, and fir takes over.