S
M
T
W
T
F
S
30
84°
61°
31
86°
62°
1
89°
62°
2
87°
63°
3
89°
65°
4
89°
59°
5
85°
64°
6
88°
64°
7
86°
63°
8
86°
63°
9
83°
62°
10
85°
63°
11
87°
62°
12
87°
63°
13
86°
62°
14
86°
62°
15
87°
63°
16
87°
62°
17
86°
55°
18
82°
57°
19
80°
54°
20
81°
53°
21
78°
53°
22
77°
54°
23
79°
56°
24
83°
55°
25
83°
57°
26
84°
57°
27
83°
56°
28
82°
55°
29
81°
54°
30
81°
54°
1
79°
54°
2
81°
54°
3
75°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chapel Hill
Chapel Hill's September 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 49° and 65°. The average high for September is 84° 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 Chapel Hill. See also: October | November | December.
