Lake Superior Region
Weather
Statistics
LAKE SUPERIOR CLIMATE
INFORMATION
SIMPLY SUPERIOR: HOMEPAGE FOR LAKE
SUPERIOR
Average High
Temperature
(°F)
City
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Duluth
|
16
|
22
|
32
|
48
|
62
|
71
|
76
|
74
|
64
|
53
|
35
|
22
|
Grand Marais
|
17
|
24
|
35
|
51
|
66
|
74
|
79
|
77
|
66
|
54
|
35
|
22
|
Thunder Bay
|
17
|
20
|
31
|
44
|
56
|
67
|
74
|
71
|
62
|
50
|
34
|
22
|
Marathon
|
17
|
21
|
33
|
44
|
53
|
60
|
64
|
64
|
57
|
48
|
35
|
23
|
Wawa
|
15
|
21
|
30
|
42
|
57
|
64
|
69
|
68
|
59
|
48
|
33
|
23
|
Sault Ste. Marie
|
22
|
24
|
33
|
47
|
62
|
70
|
76
|
74
|
64
|
54
|
39
|
27
|
Marquette
|
21
|
24
|
34
|
47
|
62
|
71
|
76
|
73
|
64
|
52
|
36
|
25
|
Hancock-Houghton
|
20
|
22
|
32
|
46
|
61
|
70
|
76
|
73
|
63
|
52
|
37
|
25
|
Ashland
|
22
|
27
|
38
|
52
|
65
|
75
|
81
|
78
|
69
|
58
|
40
|
26
|
Bayfield
|
21
|
26
|
37
|
50
|
63
|
72
|
78
|
75
|
66
|
55
|
39
|
25
|
Average Low
Temperature
(°F)
City
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Duluth
|
-1
|
3
|
15
|
29
|
40
|
48
|
54
|
53
|
45
|
35
|
21
|
6
|
Grand Marais
|
-5
|
0
|
13
|
28
|
40
|
49
|
54
|
52
|
44
|
33
|
18
|
3
|
Thunder Bay
|
-4
|
-2
|
10
|
26
|
37
|
47
|
52
|
49
|
44
|
34
|
19
|
5
|
Marathon
|
-2
|
3
|
12
|
28
|
35
|
41
|
48
|
50
|
42
|
35
|
24
|
6
|
Wawa
|
-4
|
1
|
12
|
24
|
37
|
42
|
50
|
50
|
42
|
33
|
23
|
5
|
Sault Ste. Marie
|
5
|
6
|
15
|
29
|
38
|
46
|
52
|
52
|
45
|
37
|
26
|
13
|
Marquette
|
4
|
4
|
14
|
27
|
39
|
48
|
54
|
52
|
44
|
35
|
23
|
11
|
Hancock-Houghton
|
8
|
8
|
17
|
30
|
40
|
49
|
56
|
54
|
47
|
38
|
26
|
14
|
Ashland
|
0
|
3
|
16
|
28
|
38
|
48
|
55
|
53
|
45
|
35
|
23
|
8
|
Bayfield
|
2
|
4
|
16
|
29
|
39
|
48
|
55
|
54
|
46
|
36
|
24
|
10
|
Average
Precipitation (Inches)
City
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Duluth
|
1.2
|
0.8
|
1.8
|
2.4
|
3.2
|
4.1
|
4.0
|
3.9
|
3.6
|
2.4
|
1.9
|
1.3
|
Grand Marais
|
0.9
|
0.7
|
1.2
|
1.9
|
2.7
|
4.1
|
3.8
|
3.6
|
3.2
|
2.2
|
1.5
|
0.9
|
Thunder Bay
|
0.9
|
0.8
|
1.0
|
1.5
|
2.1
|
2.8
|
3.6
|
2.8
|
3.4
|
2.5
|
1.5
|
1.0
|
Marathon
|
2.7
|
1.9
|
2.3
|
2.2
|
2.6
|
3.2
|
2.9
|
3.2
|
3.6
|
3.0
|
2.6
|
2.4
|
Wawa
|
2.1
|
1.9
|
2.8
|
2.3
|
2.6
|
3.5
|
3.9
|
4.0
|
4.7
|
4.7
|
3.9
|
3.2
|
Sault Ste. Marie
|
2.3
|
1.6
|
2.1
|
2.5
|
2.6
|
3.2
|
2.9
|
3.3
|
3.8
|
3.1
|
3.4
|
2.7
|
Marquette
|
2.1
|
1.7
|
2.8
|
2.7
|
3.1
|
3.4
|
3.0
|
3.4
|
4.0
|
3.7
|
3.1
|
2.5
|
Hancock-Houghton
|
3.8
|
2.3
|
2.3
|
1.9
|
2.6
|
2.9
|
2.8
|
2.9
|
3.3
|
2.7
|
2.8
|
3.6
|
Ashland
|
1.1
|
0.8
|
1.8
|
2.3
|
3.3
|
3.3
|
3.5
|
4.2
|
3.8
|
2.5
|
2.2
|
1.4
|
Bayfield
|
1.6
|
0.9
|
2.2
|
2.1
|
3.3
|
3.5
|
3.5
|
4.2
|
4.1
|
2.9
|
2.3
|
1.8
|