S
M
T
W
T
F
S
30
104°
77°
31
103°
74°
1
101°
76°
2
100°
77°
3
104°
74°
4
101°
73°
5
99°
75°
6
99°
73°
7
95°
72°
8
96°
72°
9
97°
72°
10
95°
69°
11
87°
64°
12
91°
69°
13
91°
69°
14
90°
68°
15
91°
69°
16
91°
68°
17
90°
69°
18
91°
69°
19
91°
68°
20
90°
68°
21
90°
67°
22
88°
67°
23
88°
66°
24
87°
65°
25
87°
65°
26
86°
63°
27
87°
64°
28
87°
63°
29
86°
62°
30
87°
63°
1
86°
63°
2
85°
62°
3
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carnegie
Carnegie's September 2026 forecast shows daily high temperatures ranging from 85° to 104°, with overnight lows between 62° and 77°. The average high for September is 92° with an average low of 68°. 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 Carnegie. See also: October | November | December.
