S
M
T
W
T
F
S
30
78°
55°
31
81°
59°
1
85°
55°
2
79°
54°
3
77°
53°
4
78°
54°
5
80°
61°
6
84°
60°
7
85°
60°
8
77°
59°
9
76°
60°
10
82°
58°
11
81°
56°
12
80°
59°
13
76°
56°
14
76°
51°
15
74°
51°
16
73°
50°
17
73°
50°
18
74°
52°
19
79°
55°
20
80°
57°
21
79°
52°
22
75°
49°
23
73°
53°
24
72°
54°
25
77°
47°
26
71°
52°
27
75°
53°
28
77°
52°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
73°
53°
1
Hist. Avg.
73°
53°
2
Hist. Avg.
72°
52°
3
Hist. Avg.
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Carlisle
Carlisle's September 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 47° and 61°. The average high for September is 78° with an average low of 55°. 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.