S
M
T
W
T
F
S
30
62°
49°
31
65°
52°
1
64°
52°
2
65°
51°
3
63°
52°
4
64°
52°
5
65°
50°
6
62°
51°
7
62°
51°
8
63°
48°
9
61°
48°
10
61°
49°
11
60°
48°
12
60°
46°
13
61°
46°
14
60°
50°
15
61°
47°
16
61°
47°
17
59°
46°
18
60°
45°
19
59°
46°
20
60°
47°
21
61°
48°
22
58°
45°
23
58°
44°
24
59°
47°
25
59°
47°
26
58°
49°
27
58°
47°
28
59°
45°
29
58°
43°
30
57°
42°
1
58°
44°
2
58°
48°
3
59°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lisnaskea
Lisnaskea's September 2026 forecast shows daily high temperatures ranging from 57° to 65°, with overnight lows between 42° and 52°. The average high for September is 61° with an average low of 48°. 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 Lisnaskea. See also: October | November | December.