S
M
T
W
T
F
S
26
82°
65°
27
88°
68°
28
88°
68°
29
89°
67°
30
89°
64°
31
90°
61°
1
88°
66°
2
87°
75°
3
89°
73°
4
85°
71°
5
86°
72°
6
90°
71°
7
90°
68°
8
90°
70°
9
92°
69°
10
93°
71°
11
93°
72°
12
90°
70°
13
93°
70°
14
94°
74°
15
90°
75°
16
93°
74°
17
100°
72°
18
90°
72°
19
87°
71°
20
92°
70°
21
90°
68°
22
90°
70°
23
88°
69°
24
89°
71°
25
86°
70°
26
87°
68°
27
84°
67°
28
88°
70°
29
88°
68°
30
87°
69°
31
88°
69°
1
88°
68°
2
87°
69°
3
88°
70°
4
89°
70°
5
89°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chapel Hill
Chapel Hill's August 2026 forecast shows daily high temperatures ranging from 84° to 100°, with overnight lows between 67° and 75°. The average high for August is 89° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Chapel Hill. See also: September | October | November.