MESA AND FOOTHILL VEGETATION 



23 



is usually from the east in the daytime during fair weather and from the 

 west at night. High winds are only from the west. These come at 



TABLE III 



Records of Relative Humidity at Boulder, Colo. 

 Given in Percents 



June, 1908, 



Date 



June 1 

 2 

 3 

 4 

 5 

 6 



7 

 8 



9 

 10 

 11 

 12 

 13 

 14 

 IS 



Date 



June 16 



17 

 18 



19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 3° 



8p.u. 



% 

 66 

 81 

 59 

 43 

 4i 

 5i 

 84 

 67 



55 

 60 



45 

 48 

 85 

 63 

 61 



TABLE IV 



Maximum and Minimum Relative Humidity for Each Day of June, 1908, at 



Boulder, Colo. 



Date 



June 1 

 2 

 3 

 4 

 5 

 6 



7 

 8 



9 

 10 

 11 

 12 



13 



14 

 15 



Date 



June 16 



17 



18 



19 

 20 

 21 

 22 



23 

 24 



25 

 26 



27 

 28 



29 



3° 



Range 



53 

 18 



29 

 40 

 28 



14 

 16 



43 

 47 

 34 

 61 

 28 

 18 

 28 



a time of low barometer and are always warm and dry. Typical high 

 winds from the mountain are known as "chinooks." A chinook in 

 winter will melt snow very rapidly and raise the air temperature twenty 



