S
M
T
W
T
F
S
26
66°
51°
27
70°
49°
28
72°
52°
29
74°
52°
30
74°
51°
31
76°
59°
1
77°
59°
2
76°
55°
3
68°
55°
4
74°
60°
5
75°
59°
6
76°
58°
7
73°
52°
8
68°
50°
9
68°
51°
10
74°
57°
11
74°
57°
12
73°
52°
13
68°
51°
14
67°
53°
15
68°
54°
16
67°
50°
17
67°
50°
18
68°
47°
19
67°
49°
20
67°
52°
21
68°
48°
22
68°
49°
23
69°
49°
24
66°
50°
25
68°
50°
26
72°
53°
27
69°
54°
28
68°
52°
29
65°
49°
30
66°
48°
31
65°
47°
1
64°
48°
2
64°
46°
3
65°
46°
4
64°
48°
5
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grünenbach
Grünenbach's August 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 46° and 60°. The average high for August is 69° with an average low of 52°. 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 Grünenbach. See also: September | October | November.