S
M
T
W
T
F
S
30
94°
70°
31
96°
70°
1
96°
72°
2
94°
69°
3
93°
69°
4
94°
72°
5
92°
72°
6
90°
71°
7
90°
71°
8
92°
72°
9
91°
73°
10
92°
72°
11
91°
71°
12
93°
71°
13
93°
70°
14
91°
71°
15
90°
70°
16
87°
70°
17
87°
69°
18
88°
69°
19
88°
68°
20
89°
68°
21
89°
67°
22
88°
69°
23
87°
68°
24
88°
68°
25
90°
67°
26
89°
65°
27
90°
66°
28
88°
65°
29
87°
64°
30
88°
65°
1
87°
66°
2
88°
65°
3
90°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chappell Hill
Chappell Hill's September 2026 forecast shows daily high temperatures ranging from 87° to 96°, with overnight lows between 64° and 73°. The average high for September is 90° with an average low of 69°. 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 Chappell Hill. See also: October | November | December.
