S
M
T
W
T
F
S
30
87°
65°
31
91°
71°
1
96°
72°
2
96°
72°
3
96°
75°
4
95°
72°
5
86°
67°
6
81°
65°
7
83°
59°
8
88°
64°
9
92°
72°
10
83°
69°
11
84°
64°
12
82°
69°
13
90°
63°
14
75°
55°
15
90°
70°
16
89°
71°
17
88°
68°
18
79°
59°
19
84°
66°
20
79°
64°
21
79°
61°
22
78°
61°
23
80°
60°
24
77°
55°
25
75°
53°
26
74°
54°
27
74°
56°
28
75°
49°
29
77°
55°
30
78°
56°
1
75°
55°
2
77°
54°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Carlisle
New Carlisle's September 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 49° and 71°. The average high for September is 79° with an average low of 59°. 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 New Carlisle. See also: October | November | December.