S
M
T
W
T
F
S
26
70°
36°
27
63°
46°
28
52°
31°
29
48°
30°
30
40°
30°
1
44°
24°
2
59°
20°
3
68°
36°
4
63°
40°
5
42°
31°
6
41°
32°
7
49°
29°
8
62°
26°
9
52°
29°
10
45°
25°
11
55°
21°
12
64°
35°
13
60°
31°
14
71°
27°
15
82°
50°
16
78°
37°
17
56°
36°
18
79°
50°
19
64°
42°
20
56°
34°
21
65°
28°
22
69°
42°
23
70°
44°
24
74°
48°
25
84°
43°
26
87°
61°
27
81°
49°
28
78°
40°
29
87°
40°
30
75°
38°
31
80°
46°
1
76°
42°
2
78°
46°
3
81°
54°
4
79°
50°
5
74°
50°
6
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Iron River
Iron River's May 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 38° and 54°. The average high for May is 77° with an average low of 47°. 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 Iron River. See also: June | July | August.