S
M
T
W
T
F
S
30
62°
53°
31
62°
54°
1
64°
53°
2
63°
53°
3
65°
52°
4
66°
52°
5
65°
51°
6
65°
54°
7
64°
53°
8
65°
53°
9
65°
52°
10
64°
53°
11
65°
52°
12
64°
49°
13
60°
48°
14
60°
49°
15
59°
51°
16
60°
52°
17
64°
49°
18
64°
49°
19
60°
51°
20
60°
50°
21
63°
49°
22
61°
49°
23
58°
51°
24
59°
51°
25
61°
46°
26
60°
48°
27
57°
49°
28
61°
50°
29
60°
48°
30
61°
51°
1
62°
49°
2
61°
48°
3
57°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cullybackey
Cullybackey's September 2026 forecast shows daily high temperatures ranging from 57° to 66°, with overnight lows between 46° and 54°. The average high for September is 62° with an average low of 51°. 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 Cullybackey. See also: October | November | December.