S
M
T
W
T
F
S
30
86°
63°
31
88°
62°
1
89°
65°
2
90°
64°
3
85°
67°
4
90°
66°
5
89°
66°
6
89°
65°
7
88°
60°
8
84°
65°
9
88°
65°
10
87°
64°
11
84°
65°
12
88°
64°
13
88°
58°
14
82°
57°
15
81°
57°
16
81°
58°
17
82°
61°
18
86°
63°
19
86°
61°
20
85°
62°
21
80°
61°
22
84°
62°
23
84°
59°
24
85°
54°
25
78°
53°
26
81°
57°
27
78°
52°
28
Hist. Avg.
80°
52°
29
Hist. Avg.
79°
52°
30
Hist. Avg.
79°
51°
1
Hist. Avg.
78°
51°
2
Hist. Avg.
78°
50°
3
Hist. Avg.
78°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chapel Hill
Chapel Hill's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 52° and 67°. The average high for September is 85° with an average low of 61°. 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.
