S
M
T
W
T
F
S
30
97°
64°
31
97°
72°
1
99°
73°
2
100°
73°
3
100°
73°
4
100°
73°
5
102°
73°
6
102°
75°
7
95°
73°
8
99°
70°
9
99°
75°
10
99°
73°
11
91°
72°
12
95°
70°
13
97°
72°
14
96°
73°
15
99°
73°
16
99°
72°
17
99°
72°
18
99°
70°
19
99°
70°
20
99°
72°
21
93°
68°
22
89°
64°
23
84°
61°
24
81°
60°
25
84°
64°
26
87°
64°
27
85°
63°
28
85°
64°
29
84°
65°
30
82°
61°
1
83°
63°
2
80°
56°
3
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bartlett
Bartlett's September 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 56° and 65°. The average high for September is 84° with an average low of 62°. 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 Bartlett. See also: October | November | December.