S
M
T
W
T
F
S
26
50°
29°
27
50°
37°
28
46°
36°
29
44°
34°
30
43°
29°
1
47°
35°
2
44°
37°
3
39°
31°
4
44°
24°
5
41°
30°
6
36°
22°
7
35°
25°
8
46°
22°
9
46°
28°
10
48°
36°
11
48°
34°
12
59°
31°
13
58°
39°
14
60°
41°
15
63°
37°
16
58°
45°
17
55°
39°
18
53°
39°
19
53°
40°
20
56°
42°
21
54°
38°
22
52°
35°
23
56°
38°
24
55°
38°
25
58°
42°
26
62°
42°
27
60°
41°
28
62°
44°
29
64°
42°
30
64°
40°
31
61°
41°
1
62°
45°
2
74°
53°
3
67°
46°
4
68°
47°
5
69°
47°
6
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Galena
Galena's May 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 35° and 53°. The average high for May is 62° with an average low of 43°. 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 Galena. See also: June | July | August.
