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°
73°
8
93°
71°
9
94°
71°
10
95°
72°
11
98°
72°
12
91°
71°
13
91°
71°
14
90°
72°
15
89°
71°
16
88°
67°
17
88°
68°
18
86°
66°
19
84°
69°
20
85°
68°
21
89°
69°
22
89°
70°
23
90°
71°
24
91°
71°
25
91°
70°
26
90°
71°
27
89°
71°
28
88°
70°
29
87°
69°
30
88°
70°
31
89°
70°
1
88°
69°
2
88°
68°
3
84°
64°
4
81°
65°
5
81°
62°
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 98°, with overnight lows between 62° and 73°. The average high for August is 89° 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.