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THE SEASONS CLIMATE AND HEALTH 



S. C., Lincoln, Neb., Santa Fe, N. Mex., Denver, Salt Lake City, 

 Portland, Ore., St. Paul, Grand Rapids, Mich. Note the average 

 relative humidity of each for the summer months and for the winter 

 months. Find the difference in the per cent, of relative humidity 

 of each of these places for the summer and winter months. 



Do certain portions of the United States have about the same 

 relative humidity both summer and winter? Name them. Can 

 you see why this should be so? 



FIG. 220. Relative humidity, U. S. 15 years, June, July, August. 



Note the comparatively low relative humidity in Kentucky, 

 southern Ohio, and West Virginia. How do you account for this 

 region of low humidity? 



Note the comparatively high relative humidity of the Great Lakes 

 region and extenting westward into northern Minnesota. Recall the 

 average temperature of this region especially in January, also the most 

 frequent paths of the LOWS. Do these facts help to explain the high 

 average relative humidity of this region? Explain. 



Account for the high humidity in Oregon and Washington, espe- 

 cially in the winter months. 



We sometimes hear the residents of the Upper Michigan Peninsula 

 and northern Minnesota say that they do not feel the cold more 



