S
M
T
W
T
F
S
30
76°
61°
31
77°
65°
1
79°
63°
2
81°
65°
3
76°
59°
4
75°
57°
5
76°
56°
6
74°
57°
7
74°
56°
8
75°
58°
9
77°
58°
10
75°
54°
11
76°
50°
12
70°
47°
13
72°
49°
14
71°
49°
15
67°
48°
16
69°
53°
17
73°
47°
18
65°
44°
19
65°
43°
20
69°
49°
21
73°
53°
22
74°
53°
23
75°
51°
24
73°
49°
25
72°
50°
26
72°
50°
27
73°
51°
28
72°
49°
29
71°
44°
30
61°
41°
1
60°
40°
2
64°
48°
3
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carlisle
Carlisle's September 2026 forecast shows daily high temperatures ranging from 60° to 81°, with overnight lows between 40° and 65°. The average high for September is 72° 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 Carlisle. See also: October | November | December.