i6 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



these factors results in isolated conditions of precipitation, tempera- 

 ture, and winds. 



The weather of the Yepocapa region can most easily be appreciated 

 from an examination of the meteorological data (Yepocapa and Aca- 

 tenango stations) collected over a 5-year period, from August i, 1947, 

 through July 31, 1952, which have been summarized in tables 2 and 3. 



Map 7. 



It will be noted that the mean monthly maximum temperature varies 

 slightly throughout the year and that the mean monthly minimum also 

 varies little, although there is a slight reduction in temperature 

 during December, January, and February. The reduction in minimum 

 temperature is reflected in the slight seasonal drop in the mean monthly 

 temperature during the same months. This is the middle of the "cool" 

 or "dry" season, as discussed above under Guatemala. Also, as would 

 be expected, there is a corresponding drop in precipitation and relative 

 humidity, which is more noticeable, and extends over a longer period 



