dieroriees in "the average monthly temperatures 
0f the tm) P^cea indicate the probable moderating influence 
Ox ^Lq J.arge body of water* ^he average maximum temperature 
for 5 years at Ontonagon was 34.6° C. and the average minimum 
-^‘•7 C. The mean monthly temperature at Bergland for 11 
ye&iii was above 0 C. for 7 months of the year, beginning with 
April, and the mean monthly minimum above this for 6 months, 
beginning with Hay. Tables prepared by the U. 3. Weather 
Bureau show that the average date of the last killing frost 
in spring is June 9, while that of the first Killing frost in 
the fall is 3optember 16, giving 89 days as the average length 
Ox uhe growing season. In this region the isotherms parallel 
the shore line, and the average temperature of points along 
the coat is several degrees warmer than inland points a few 
miles further back. During the hot summer months, however, 
the isotherms move back from the shore, so that the discrepancy 
between shore and inland conditions is not so great. 
-TABLJ5 III- 
AViSRAGiS MONTHLY PRJSCIPITATIOU AT B3RGLABD FOE 11 Y&ARS 
— Jan. 
Feb. 
Mar. 
Apr. 
May 
June 
cm 4.05 
3.26 
4.27 
4.70 
7.86 
8.87 
July 
Aug. 
Sopt. 
Oct. 
Ilov. 
Dec. Yr. 
