S
M
T
W
T
F
S
30
80°
55°
31
75°
50°
1
73°
50°
2
72°
51°
3
72°
49°
4
73°
50°
5
75°
57°
6
74°
56°
7
77°
57°
8
80°
55°
9
79°
55°
10
74°
56°
11
80°
56°
12
81°
55°
13
79°
56°
14
76°
54°
15
80°
44°
16
73°
44°
17
69°
43°
18
69°
45°
19
70°
47°
20
69°
52°
21
75°
51°
22
68°
51°
23
75°
52°
24
76°
51°
25
74°
52°
26
76°
52°
27
76°
45°
28
75°
39°
29
73°
39°
30
63°
44°
1
62°
40°
2
64°
45°
3
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cornwall Bridge
Cornwall Bridge's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 39° and 57°. The average high for September is 73° with an average low of 50°. 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 Cornwall Bridge. See also: October | November | December.
