S
M
T
W
T
F
S
26
86°
67°
27
87°
67°
28
87°
68°
29
88°
68°
30
87°
69°
31
87°
67°
1
88°
67°
2
91°
68°
3
90°
71°
4
91°
69°
5
90°
72°
6
90°
66°
7
86°
65°
8
85°
66°
9
86°
66°
10
86°
67°
11
87°
67°
12
86°
66°
13
89°
69°
14
90°
70°
15
90°
70°
16
89°
69°
17
90°
70°
18
90°
69°
19
89°
67°
20
88°
69°
21
89°
69°
22
89°
68°
23
88°
69°
24
89°
69°
25
89°
68°
26
88°
68°
27
89°
67°
28
89°
69°
29
87°
69°
30
88°
68°
31
89°
69°
1
88°
67°
2
87°
67°
3
86°
68°
4
87°
68°
5
87°
68°
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 85° to 91°, with overnight lows between 65° and 72°. The average high for August is 88° with an average low of 68°. 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.