S
M
T
W
T
F
S
30
68°
55°
31
64°
57°
1
N/A
2
69°
57°
3
66°
54°
4
63°
49°
5
63°
53°
6
66°
54°
7
63°
52°
8
60°
49°
9
61°
50°
10
60°
48°
11
63°
51°
12
64°
52°
13
63°
54°
14
64°
53°
15
63°
53°
16
63°
52°
17
64°
54°
18
64°
53°
19
63°
53°
20
61°
52°
21
62°
53°
22
63°
52°
23
62°
52°
24
60°
51°
25
63°
52°
26
62°
52°
27
63°
51°
28
62°
52°
29
61°
51°
30
62°
52°
1
62°
52°
2
61°
51°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lisburn
Lisburn's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 48° and 57°. The average high for September is 63° with an average low of 52°. 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 Lisburn. See also: October | November | December.
