S
M
T
W
T
F
S
26
68°
39°
27
65°
49°
28
61°
48°
29
51°
40°
30
50°
34°
1
46°
34°
2
49°
30°
3
59°
42°
4
76°
49°
5
59°
43°
6
55°
36°
7
58°
36°
8
62°
35°
9
70°
41°
10
60°
35°
11
58°
34°
12
66°
30°
13
57°
34°
14
58°
35°
15
70°
34°
16
77°
60°
17
85°
57°
18
82°
66°
19
79°
56°
20
58°
45°
21
67°
44°
22
75°
49°
23
64°
53°
24
68°
49°
25
81°
56°
26
80°
54°
27
76°
51°
28
75°
43°
29
68°
44°
30
77°
54°
31
73°
53°
1
72°
55°
2
75°
56°
3
73°
59°
4
76°
60°
5
74°
66°
6
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Benton Harbor
Benton Harbor's May 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 43° and 66°. The average high for May is 74° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Benton Harbor. See also: June | July | August.