S
M
T
W
T
F
S
26
54°
44°
27
73°
41°
28
66°
50°
29
54°
45°
30
57°
43°
1
48°
39°
2
50°
38°
3
64°
34°
4
73°
57°
5
62°
47°
6
56°
41°
7
55°
40°
8
62°
45°
9
61°
47°
10
64°
47°
11
60°
45°
12
61°
46°
13
64°
51°
14
62°
50°
15
63°
51°
16
68°
54°
17
70°
51°
18
70°
55°
19
69°
56°
20
72°
56°
21
72°
51°
22
66°
48°
23
65°
48°
24
66°
49°
25
66°
51°
26
67°
50°
27
67°
50°
28
68°
51°
29
68°
52°
30
69°
56°
31
75°
57°
1
70°
55°
2
72°
57°
3
75°
61°
4
77°
61°
5
76°
62°
6
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Genoa
Genoa's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 40° and 63°. The average high for May is 67° 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 May weather will actually feel in Genoa. See also: June | July | August.