S
M
T
W
T
F
S
30
85°
69°
31
94°
66°
1
97°
71°
2
99°
71°
3
98°
72°
4
100°
74°
5
98°
71°
6
82°
67°
7
84°
64°
8
85°
60°
9
89°
60°
10
95°
70°
11
97°
71°
12
85°
72°
13
87°
67°
14
91°
66°
15
85°
62°
16
86°
60°
17
88°
67°
18
86°
65°
19
82°
62°
20
80°
60°
21
74°
55°
22
76°
56°
23
77°
58°
24
79°
60°
25
80°
60°
26
78°
58°
27
81°
62°
28
83°
63°
29
82°
62°
30
82°
63°
1
81°
62°
2
81°
60°
3
80°
61°
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 74° to 97°, with overnight lows between 55° and 72°. The average high for September is 83° 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 Chapel Hill. See also: October | November | December.
