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
77°
50°
5
66°
47°
6
56°
44°
7
57°
43°
8
62°
47°
9
69°
48°
10
56°
42°
11
55°
42°
12
58°
48°
13
64°
51°
14
67°
53°
15
71°
53°
16
65°
51°
17
62°
50°
18
67°
52°
19
68°
51°
20
66°
47°
21
64°
48°
22
65°
49°
23
66°
52°
24
67°
52°
25
68°
53°
26
70°
53°
27
69°
50°
28
73°
56°
29
76°
59°
30
78°
60°
31
78°
61°
1
79°
59°
2
73°
60°
3
78°
62°
4
81°
63°
5
81°
63°
6
80°
64°
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 81°, with overnight lows between 42° and 64°. The average high for May is 68° with an average low of 53°. 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.