S
M
T
W
T
F
S
30
62°
50°
31
63°
49°
1
62°
50°
2
62°
53°
3
64°
47°
4
64°
48°
5
62°
50°
6
64°
51°
7
65°
52°
8
64°
51°
9
64°
50°
10
63°
52°
11
63°
53°
12
66°
53°
13
66°
52°
14
65°
51°
15
65°
50°
16
60°
48°
17
59°
49°
18
60°
47°
19
59°
46°
20
60°
46°
21
59°
45°
22
58°
46°
23
59°
47°
24
60°
49°
25
58°
51°
26
59°
50°
27
62°
48°
28
61°
47°
29
57°
45°
30
57°
45°
1
58°
46°
2
56°
45°
3
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crossmaglen
Crossmaglen's September 2026 forecast shows daily high temperatures ranging from 56° to 66°, with overnight lows between 45° and 53°. The average high for September is 61° with an average low of 49°. 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 Crossmaglen. See also: October | November | December.
