S
M
T
W
T
F
S
30
80°
66°
31
78°
65°
1
76°
64°
2
77°
65°
3
78°
68°
4
77°
64°
5
75°
63°
6
75°
64°
7
76°
65°
8
76°
65°
9
77°
64°
10
77°
64°
11
79°
63°
12
77°
63°
13
76°
64°
14
77°
65°
15
75°
62°
16
75°
64°
17
76°
66°
18
72°
67°
19
73°
67°
20
72°
62°
21
Hist. Avg.
74°
62°
22
Hist. Avg.
74°
62°
23
Hist. Avg.
73°
61°
24
Hist. Avg.
73°
61°
25
Hist. Avg.
73°
61°
26
Hist. Avg.
73°
61°
27
Hist. Avg.
72°
61°
28
Hist. Avg.
72°
60°
29
Hist. Avg.
72°
60°
30
Hist. Avg.
72°
60°
1
Hist. Avg.
72°
60°
2
Hist. Avg.
71°
60°
3
Hist. Avg.
71°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Genoa
Genoa's September 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 62° and 68°. The average high for September is 76° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Genoa. See also: October | November | December.