S
M
T
W
T
F
S
30
64°
53°
31
66°
55°
1
66°
55°
2
67°
54°
3
64°
55°
4
66°
54°
5
67°
52°
6
63°
54°
7
63°
53°
8
64°
50°
9
62°
50°
10
62°
51°
11
63°
49°
12
62°
49°
13
61°
50°
14
61°
52°
15
62°
49°
16
63°
50°
17
62°
48°
18
61°
49°
19
61°
48°
20
62°
49°
21
62°
51°
22
60°
48°
23
60°
47°
24
61°
48°
25
60°
49°
26
60°
51°
27
61°
49°
28
60°
48°
29
59°
46°
30
60°
46°
1
59°
47°
2
58°
51°
3
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ballyclare
Ballyclare's September 2026 forecast shows daily high temperatures ranging from 58° to 67°, with overnight lows between 46° and 55°. The average high for September is 62° 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 Ballyclare. See also: October | November | December.