S
M
T
W
T
F
S
26
79°
59°
27
86°
63°
28
63°
52°
29
66°
50°
30
64°
46°
1
64°
45°
2
64°
43°
3
79°
41°
4
79°
63°
5
64°
45°
6
61°
45°
7
68°
39°
8
77°
46°
9
82°
52°
10
72°
50°
11
77°
45°
12
79°
50°
13
77°
59°
14
77°
54°
15
82°
59°
16
88°
70°
17
82°
66°
18
84°
72°
19
66°
56°
20
65°
56°
21
71°
61°
22
75°
61°
23
78°
62°
24
79°
59°
25
78°
60°
26
80°
63°
27
82°
61°
28
81°
63°
29
79°
62°
30
80°
61°
31
82°
61°
1
81°
59°
2
83°
62°
3
79°
60°
4
77°
57°
5
82°
63°
6
84°
64°
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 65° to 84°, with overnight lows between 56° and 64°. The average high for May is 78° with an average low of 61°. 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.
