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The Navajo Nation is 27,000 square miles (the size of Holland and Belgium combined) and ranges from 4,500 feet and 8,000 feet in elevation with even higher mountains, so there is a great deal of variation in climate. All of the areas have snow in the winter and monsoon summer rains and thunderstorms.

There are four main regions regions: the flat valleys at elevations from 4,500 to 6,000 feet, the upland plains at 5,500 - 7,000 feet; the mesas are 6,000 - 8,000 feet; and the mountains are from 7,500 to over 10,000 feet. Each of these regions is cut by canyons ranging from a few hundred to 2,000 feet in depth.

There are three climates zones: the cold humid climate of the mountains and mesa tops, 8%; the steppe climate of the mesas and the high plains, 37%; and the comparatively warm desert, 55%.

Temperatures in the cold humid zone average a low of 4 degrees and a high of 80. The annual precipitation is 16 - 27 inches, and the growing season is only 95 days.

The steppe zone has average low of 10 degrees and a high of 88. Annual precipitation is from 12-16 inches, the growing season is 147 days.

Finally, in the desert area temperatures are a low of 11 degrees and a high of 110. Annual precipitation is between 7 and 11 inches, and the growing season is 173 days.

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