200 



ENVIRONMENTAL CONDITIONS. 



Table 3. — Length of period ivith normal daily mean temperatures of 68° F. or above, and of 

 period with similar means of 32° F. or below, within the year. (Plates 35 and 36.) 



Station. 



Alabama: 



Anniston 



Birmingham .... 



Mobile 



Montgomery 



Arizona: 



Flagstaff 



Phoenix 



Yuma 



Arkansas : 



Fort Smith 



Little Rock 



California: 



Eureka 



Fresno 



Independence . . . 



Los Angeles 



Red Bluff 



Sacramento 



San Diego 



San Francisco . . . 



San Jose 



San Luis Obispo . 

 Colorado : 



Denver 



Durango 



Grand Junction. 



Pueblo 



Connecticut : 



Hartford 



New Haven 



Florida: 



Jacksonville 



Jupiter 



Key West 



Pensacola 



Tampa 



Georgia: 



Atlanta 



Augusta 



Macon 



Savannah 



Thomasville. . . . 

 Idaho: 



Boise 



Lewiston 



Pocatello 



Illinois: 



Cairo 



Chicago 



La Salle 



Peoria , 



Springfield 



Indiana: 



Evansville 



Indianapolis ... 

 Iowa: 



Charles City . . . 

 Davenport 



Mean of 



68° F. cr 



above. 



days. 

 141 

 160 

 176 

 171 





 186 

 211 



149 

 153 







150 



118 



54 



140 



110 



50 















74 



38 



105 



89 



69 



77 



191 



285 

 365 

 189 

 226 



148 

 160 

 157 

 169 

 183 



72 



88 

 64 



132 

 79 

 90 

 95 



109 



129 

 108 



81 

 96 



Mean of 



32° F. or 



below. 



days. 

 

 

 

 



92 

 

 





 





 

 

 

 

 

 

 

 

 



73 

 88 

 80 

 70 



94 



84 





 

 

 

 





 

 

 

 



56 







96 





 97 



98 

 99 



78 



22 



68 



126 

 103 



Station. 



Iowa — Continued: 



Des Moines 



Dubuque 



Keokuk 



Sioux City 



Kansas : 



Concordia 



Dodge 



Topeka 



Wichita 



Kentucky: 



Lexington 



Louisville 



Louisiana: 



New Orleans 



Shreveport 



Maine: 



Eastport , 



Portland , 



Maryland: 



Baltimore 



Washington, D. C. 

 Massachusetts: 



Boston 



Nantucket 



Michigan: 



Alpena 



Detroit 



Escanaba 



Grand Haven. . . . 



Grand Rapids 



Houghton 



Marquette 



Port Huron 



Sault Ste. Marie . . 

 Minnesota : 



Duluth 



Moorhead 



St. Paul 



Mississippi : 



Meridian 



Vicksburg 



Missouri : 



Columbia 



Hannibal 



Kansas City 



St. Louis 



Springfield 



Montana: 



Havre 



Helena 



Kalispel 



Miles City 



Nebraska: 



Lincoln 



North Platte 



Omaha 



Valentine 



Mean of 



68°F. or 



above. 



days. 



97 



89 



107 



91 



112 

 113 

 118 

 125 



115 

 128 



Mean of 



32°F. or 



below. 



days. 



105 



112 



89 



119 



82 

 70 

 74 

 54 





 



