S
M
T
W
T
F
S
30
68°
65°
31
76°
68°
1
88°
69°
2
94°
70°
3
80°
63°
4
76°
63°
5
74°
62°
6
73°
58°
7
77°
54°
8
82°
54°
9
76°
68°
10
76°
58°
11
72°
52°
12
81°
54°
13
73°
59°
14
66°
51°
15
75°
54°
16
69°
60°
17
69°
62°
18
68°
57°
19
64°
55°
20
67°
58°
21
61°
48°
22
66°
46°
23
69°
49°
24
70°
42°
25
68°
49°
26
68°
50°
27
69°
51°
28
69°
51°
29
75°
57°
30
73°
57°
1
72°
61°
2
68°
54°
3
67°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Enniskillen
Enniskillen's September 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 49° and 61°. The average high for September is 70° with an average low of 54°. 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 Enniskillen. See also: October | November | December.