S
M
T
W
T
F
S
26
86°
67°
27
86°
67°
28
87°
70°
29
88°
72°
30
86°
72°
31
90°
71°
1
89°
72°
2
86°
71°
3
87°
72°
4
85°
71°
5
87°
71°
6
86°
70°
7
85°
70°
8
86°
71°
9
87°
71°
10
86°
70°
11
85°
70°
12
84°
69°
13
84°
68°
14
85°
67°
15
85°
70°
16
87°
70°
17
85°
69°
18
84°
68°
19
85°
66°
20
84°
65°
21
89°
64°
22
85°
63°
23
84°
63°
24
85°
67°
25
84°
68°
26
85°
67°
27
89°
66°
28
90°
67°
29
89°
67°
30
87°
66°
31
88°
66°
1
83°
64°
2
84°
68°
3
88°
63°
4
89°
69°
5
89°
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 83° to 90°, with overnight lows between 63° and 72°. The average high for August is 86° 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.