Annual precipitation, inches, Lake Michigan, 1900-1986
#Source: Great Lake Water Levels, U.S. Dept of Commerce, Rockville MD
#        U.S. Lake Survey, Detroit, MI, US Army Corps of Engineers
33.20
27.55
31.81
32.50
31.01
34.83
33.19
31.56
29.29
32.62
26.14
35.26
32.90
29.67
31.57
31.21
34.55
27.15
29.99
30.53
29.02
31.58
32.82
28.86
32.13
25.56
34.00
32.35
32.83
30.56
22.21
30.95
28.44
29.86
28.04
30.00
28.39
30.10
36.21
29.47
34.45
33.95
35.62
32.27
29.50
36.61
27.86
33.34
29.10
30.57
32.96
37.02
30.11
28.99
36.89
27.55
27.20
30.90
25.99
37.82
34.63
31.43
26.97
24.92
29.56
36.89
29.45
33.33
34.29
31.56
32.86
30.10
34.97
33.98
32.77
35.74
26.54
34.42
33.67
33.18
32.11
31.51
32.86
31.55
29.74
38.98
34.65