S
M
T
W
T
F
S
26
90°
72°
27
90°
72°
28
85°
71°
29
86°
72°
30
86°
68°
31
87°
66°
1
85°
66°
2
84°
68°
3
84°
70°
4
85°
69°
5
85°
67°
6
86°
69°
7
85°
71°
8
85°
71°
9
86°
70°
10
90°
70°
11
86°
68°
12
87°
70°
13
86°
69°
14
88°
71°
15
90°
70°
16
90°
70°
17
91°
69°
18
90°
70°
19
90°
65°
20
85°
65°
21
84°
64°
22
84°
64°
23
85°
65°
24
84°
64°
25
84°
64°
26
85°
65°
27
84°
64°
28
84°
65°
29
88°
64°
30
87°
64°
31
85°
69°
1
87°
68°
2
88°
64°
3
83°
63°
4
82°
64°
5
83°
64°
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 72°. The average high for August is 86° with an average low of 67°. 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.