S
M
T
W
T
F
S
26
66°
45°
27
60°
43°
28
54°
36°
29
55°
41°
30
52°
40°
1
53°
35°
2
65°
32°
3
71°
51°
4
67°
45°
5
52°
35°
6
49°
29°
7
60°
34°
8
73°
37°
9
63°
46°
10
65°
35°
11
70°
32°
12
76°
57°
13
73°
46°
14
78°
51°
15
88°
57°
16
81°
53°
17
79°
60°
18
70°
48°
19
53°
39°
20
59°
42°
21
69°
48°
22
72°
53°
23
73°
52°
24
72°
54°
25
76°
56°
26
78°
55°
27
76°
55°
28
77°
56°
29
73°
52°
30
74°
56°
31
77°
58°
1
78°
58°
2
70°
57°
3
70°
55°
4
71°
56°
5
76°
59°
6
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Geneva
Geneva's May 2026 forecast shows daily high temperatures ranging from 53° to 81°, with overnight lows between 39° and 60°. The average high for May is 73° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Geneva. See also: June | July | August.