S
M
T
W
T
F
S
26
82°
65°
27
88°
68°
28
88°
68°
29
89°
65°
30
87°
62°
31
88°
67°
1
88°
71°
2
83°
70°
3
81°
71°
4
82°
69°
5
85°
70°
6
87°
68°
7
86°
69°
8
88°
70°
9
89°
69°
10
89°
68°
11
88°
68°
12
88°
70°
13
86°
71°
14
90°
71°
15
89°
66°
16
85°
66°
17
85°
67°
18
90°
70°
19
89°
68°
20
85°
66°
21
87°
68°
22
89°
70°
23
89°
69°
24
83°
67°
25
86°
67°
26
86°
65°
27
83°
64°
28
86°
65°
29
88°
67°
30
89°
69°
31
88°
69°
1
88°
70°
2
87°
69°
3
82°
69°
4
82°
66°
5
81°
63°
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 81° to 90°, with overnight lows between 62° and 71°. 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.