40- 

 ^ 30- 



o 



a, 20 - 



zy 



2 10 - 



<t> 

 E 



QJ 



I— 



'^ -\o- 



-2 



' X 







D a 



+ 



Extreme High 

 Meon High 

 Meon Low 

 Extreme Low 



1980 



X 

 



Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 



Month 



Figure 7. Monthly high and low air 

 temperatures, 1980 



Table 4 

 Meteorological Data Summary for 1980 



Tempe 



Month Average Extr 



Apr 



May 



Jun 

 Jul 

 Aug 

 Sep 



Date Average Extr 





Average 



Number 

 of 



Re 



sultant 



Extreme 





Precip- 





Direction 





Di 



rection 





itation 



Speed 



Obser- 



Speed 



(deg from 



Speed 



(d 



eg from 





mm 



m/sec 



vations 



3.1 



true N) 

 356 



m/sec 

 10.8 



t 



rue N) 



Date 



89 



5.8 



111 





203 



nth 

















23 



13th 



66 



5.6 



103 



2.4 



337 



11.3 





338 



10th 

 29th 



89 



6.1 



121 



1.4 



334 



20.6 





23 



2nd 



112 



4.9 



82 



1.0 



241 



11.3 





203 

 248 



10th 

 15th 



39 



4.4 



77 



0.8 



219 



8.2 





23 

 45 



8th 

 26th 



60 



5.5 



93 



0.8 



210 



12.4 





248 



7th 



6A 



4.0 



113 



1.4 



217 



8.2 





248 



3rd 



i,S 



4.5 



96 



0.7 



284 



8.2 





23 



22nd 



30 



4.0 



95 



0.8 



183 



7.2 





248 



3rd 

 23rd 



73 



5.4 



113 



0.7 



323 



14.9 





248 



25th 



96 



5.8 



114 



1.9 



317 



12.9 





23 



16th 



47 



6.2 



111 



3.3 



358 



14.9 









25 th 



793 



5.2 



1229 



1.0 



323 



20.6 





23 



Mar 



37 



