S
M
T
W
T
F
S
26
78°
62°
27
77°
63°
28
79°
62°
29
76°
60°
30
76°
64°
31
77°
64°
1
79°
63°
2
82°
65°
3
82°
65°
4
81°
63°
5
76°
62°
6
76°
61°
7
80°
64°
8
80°
61°
9
79°
64°
10
80°
62°
11
75°
59°
12
76°
63°
13
81°
64°
14
77°
58°
15
73°
56°
16
73°
56°
17
74°
62°
18
75°
63°
19
75°
63°
20
74°
62°
21
78°
63°
22
74°
62°
23
73°
62°
24
77°
55°
25
78°
61°
26
81°
57°
27
79°
55°
28
73°
56°
29
70°
54°
30
71°
54°
31
72°
61°
1
76°
61°
2
71°
62°
3
78°
62°
4
79°
55°
5
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Geneva
Geneva's August 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 54° and 65°. The average high for August is 77° 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 August weather will actually feel in Geneva. See also: September | October | November.