S
M
T
W
T
F
S
30
85°
69°
31
94°
66°
1
96°
73°
2
99°
75°
3
98°
73°
4
99°
71°
5
91°
70°
6
84°
67°
7
82°
66°
8
84°
65°
9
82°
66°
10
84°
68°
11
88°
65°
12
84°
64°
13
82°
62°
14
83°
63°
15
85°
68°
16
80°
67°
17
78°
66°
18
80°
62°
19
77°
59°
20
76°
58°
21
77°
60°
22
78°
62°
23
80°
62°
24
82°
64°
25
81°
64°
26
77°
63°
27
76°
64°
28
78°
63°
29
77°
62°
30
77°
61°
1
73°
58°
2
72°
60°
3
77°
58°
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 72° to 99°, with overnight lows between 58° and 75°. The average high for September is 82° with an average low of 65°. 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.
