S
M
T
W
T
F
S
26
62°
47°
27
78°
48°
28
75°
56°
29
62°
48°
30
58°
42°
1
55°
38°
2
51°
33°
3
62°
31°
4
74°
49°
5
72°
51°
6
61°
43°
7
60°
39°
8
68°
44°
9
72°
51°
10
64°
41°
11
60°
37°
12
62°
52°
13
65°
43°
14
62°
45°
15
69°
52°
16
74°
56°
17
77°
60°
18
79°
57°
19
77°
57°
20
76°
58°
21
79°
59°
22
81°
53°
23
79°
58°
24
78°
57°
25
80°
59°
26
80°
60°
27
81°
60°
28
81°
59°
29
82°
61°
30
81°
60°
31
81°
59°
1
76°
57°
2
74°
55°
3
78°
60°
4
82°
61°
5
79°
60°
6
79°
59°
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 60° to 82°, with overnight lows between 37° and 61°. The average high for May is 75° with an average low of 55°. 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.
