S
M
T
W
T
F
S
26
73°
57°
27
75°
54°
28
76°
54°
29
76°
55°
30
77°
54°
31
78°
60°
1
80°
60°
2
81°
61°
3
82°
54°
4
76°
60°
5
79°
57°
6
77°
59°
7
78°
59°
8
78°
54°
9
75°
55°
10
74°
54°
11
75°
57°
12
74°
55°
13
75°
56°
14
74°
53°
15
73°
51°
16
73°
53°
17
74°
57°
18
76°
59°
19
73°
57°
20
73°
57°
21
72°
58°
22
72°
58°
23
73°
56°
24
72°
55°
25
71°
59°
26
76°
55°
27
75°
54°
28
75°
50°
29
70°
51°
30
71°
58°
31
76°
58°
1
78°
57°
2
78°
57°
3
77°
50°
4
74°
49°
5
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Koblenz
Koblenz's August 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 49° and 61°. The average high for August is 75° with an average low of 56°. 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 Koblenz. See also: September | October | November.
