S
M
T
W
T
F
S
30
85°
69°
31
94°
66°
1
97°
71°
2
99°
73°
3
99°
73°
4
99°
74°
5
94°
70°
6
84°
63°
7
82°
64°
8
86°
65°
9
91°
69°
10
96°
68°
11
91°
66°
12
88°
69°
13
85°
66°
14
88°
67°
15
85°
63°
16
80°
67°
17
78°
66°
18
76°
66°
19
77°
65°
20
78°
65°
21
79°
64°
22
81°
65°
23
81°
65°
24
75°
64°
25
77°
65°
26
80°
64°
27
81°
63°
28
81°
56°
29
72°
54°
30
73°
54°
1
74°
57°
2
74°
60°
3
72°
59°
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 54° and 74°. The average high for September is 83° 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.
