S
M
T
W
T
F
S
26
91°
74°
27
93°
77°
28
97°
76°
29
95°
81°
30
94°
76°
31
90°
75°
1
81°
73°
2
86°
71°
3
87°
69°
4
87°
70°
5
87°
67°
6
87°
68°
7
88°
67°
8
89°
68°
9
88°
68°
10
84°
66°
11
84°
68°
12
86°
69°
13
85°
67°
14
84°
68°
15
85°
65°
16
84°
65°
17
85°
66°
18
89°
69°
19
89°
67°
20
85°
65°
21
86°
68°
22
86°
69°
23
88°
69°
24
87°
68°
25
87°
66°
26
86°
65°
27
85°
64°
28
86°
66°
29
87°
67°
30
88°
67°
31
88°
69°
1
86°
69°
2
82°
68°
3
84°
68°
4
86°
67°
5
85°
66°
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 81° to 90°, with overnight lows between 64° and 75°. The average high for August is 86° with an average low of 68°. 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.