S
M
T
W
T
F
S
26
90°
72°
27
90°
71°
28
91°
72°
29
90°
72°
30
91°
73°
31
91°
73°
1
90°
72°
2
91°
72°
3
87°
71°
4
88°
71°
5
90°
72°
6
90°
71°
7
85°
70°
8
85°
68°
9
88°
69°
10
90°
71°
11
90°
71°
12
89°
70°
13
86°
69°
14
87°
68°
15
86°
69°
16
85°
70°
17
90°
69°
18
89°
70°
19
87°
69°
20
86°
69°
21
86°
64°
22
84°
64°
23
84°
65°
24
85°
65°
25
87°
68°
26
88°
69°
27
89°
67°
28
89°
68°
29
88°
69°
30
90°
68°
31
90°
63°
1
83°
63°
2
82°
65°
3
84°
68°
4
88°
68°
5
86°
65°
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 82° to 91°, with overnight lows between 63° and 73°. The average high for August is 88° with an average low of 69°. 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.