S
M
T
W
T
F
S
30
81°
54°
31
77°
53°
1
67°
60°
2
71°
60°
3
78°
59°
4
80°
56°
5
74°
54°
6
68°
48°
7
76°
51°
8
78°
53°
9
71°
65°
10
77°
53°
11
70°
48°
12
72°
50°
13
77°
57°
14
75°
56°
15
70°
52°
16
70°
49°
17
67°
51°
18
69°
53°
19
67°
49°
20
73°
51°
21
65°
53°
22
63°
53°
23
64°
52°
24
67°
52°
25
68°
51°
26
70°
49°
27
63°
46°
28
65°
48°
29
70°
51°
30
70°
51°
1
69°
50°
2
68°
51°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Antrim
Antrim's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 46° and 65°. The average high for September is 70° 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 Antrim. See also: October | November | December.
