Question

I don't get 42. A. B. and C.

Answer 1

Sorry I only know the answer to b. 
The all time high temperature is 92 in June
The all time low   temperature is -38 in February. 

Answer 2

A)  56 and 56 are the range of temp

B) high time temp is 56  57  56  72  82  92  84  85  73  64  62  53
   
low time temp is -35  -38  -24  -15  1  29  34 31  19  -6  -21  -13 
hoped I helped