S
M
T
W
T
F
S
30
77°
63°
31
78°
62°
1
77°
60°
2
71°
58°
3
71°
56°
4
72°
57°
5
73°
61°
6
77°
62°
7
79°
62°
8
79°
61°
9
78°
61°
10
79°
60°
11
76°
60°
12
78°
59°
13
78°
61°
14
78°
49°
15
66°
50°
16
67°
51°
17
70°
53°
18
77°
57°
19
77°
52°
20
78°
50°
21
72°
47°
22
66°
46°
23
64°
49°
24
64°
55°
25
69°
55°
26
70°
56°
27
72°
56°
28
74°
55°
29
74°
55°
30
73°
54°
1
73°
50°
2
72°
44°
3
66°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Irondequoit
Irondequoit's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 42° and 63°. The average high for September is 73° with an average low of 55°. 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 Irondequoit. See also: October | November | December.
