S
M
T
W
T
F
S
26
61°
38°
27
64°
-1°
28
63°
28°
29
51°
40°
30
56°
40°
1
55°
43°
2
63°
39°
3
47°
36°
4
59°
36°
5
76°
46°
6
74°
57°
7
59°
43°
8
56°
41°
9
62°
37°
10
64°
48°
11
62°
46°
12
51°
41°
13
59°
40°
14
67°
46°
15
63°
46°
16
74°
44°
17
76°
52°
18
N/A
19
74°
55°
20
84°
47°
21
59°
39°
22
60°
39°
23
64°
40°
24
65°
41°
25
63°
44°
26
65°
49°
27
64°
45°
28
66°
47°
29
70°
48°
30
72°
45°
31
74°
48°
1
75°
44°
2
64°
43°
3
65°
43°
4
64°
48°
5
64°
49°
6
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Alpena
Alpena's May 2026 forecast shows daily high temperatures ranging from 59° to 84°, with overnight lows between 39° and 55°. The average high for May is 67° with an average low of 45°. 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 Alpena. See also: June | July | August.