S
M
T
W
T
F
S
26
77°
51°
27
77°
49°
28
81°
54°
29
84°
57°
30
84°
49°
31
74°
47°
1
72°
47°
2
75°
48°
3
79°
49°
4
82°
52°
5
75°
49°
6
73°
48°
7
74°
49°
8
81°
53°
9
80°
53°
10
78°
48°
11
74°
49°
12
73°
49°
13
74°
50°
14
74°
48°
15
75°
52°
16
73°
49°
17
72°
48°
18
72°
47°
19
78°
51°
20
80°
55°
21
82°
56°
22
81°
56°
23
80°
57°
24
81°
47°
25
73°
45°
26
68°
43°
27
70°
44°
28
72°
49°
29
75°
52°
30
74°
48°
31
67°
50°
1
68°
49°
2
67°
44°
3
68°
47°
4
73°
53°
5
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Galena
Galena's August 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 43° and 57°. The average high for August is 75° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Galena. See also: September | October | November.
