S
M
T
W
T
F
S
26
49°
37°
27
63°
39°
28
63°
48°
29
48°
40°
30
44°
38°
1
43°
31°
2
47°
34°
3
63°
34°
4
75°
47°
5
56°
42°
6
43°
37°
7
47°
32°
8
62°
33°
9
65°
43°
10
53°
39°
11
45°
39°
12
54°
30°
13
55°
43°
14
54°
41°
15
70°
41°
16
81°
53°
17
54°
47°
18
88°
46°
19
N/A
20
50°
41°
21
49°
42°
22
54°
48°
23
54°
47°
24
62°
50°
25
62°
52°
26
67°
53°
27
69°
55°
28
66°
56°
29
66°
53°
30
69°
57°
31
69°
56°
1
64°
49°
2
66°
54°
3
63°
53°
4
61°
53°
5
63°
54°
6
67°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Harbor Beach
Harbor Beach's May 2026 forecast shows daily high temperatures ranging from 49° to 69°, with overnight lows between 41° and 57°. The average high for May is 62° with an average low of 52°. 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 Harbor Beach. See also: June | July | August.