S
M
T
W
T
F
S
26
82°
68°
27
88°
69°
28
87°
71°
29
89°
65°
30
87°
66°
31
85°
67°
1
85°
68°
2
83°
67°
3
84°
68°
4
85°
69°
5
88°
70°
6
87°
68°
7
86°
69°
8
87°
70°
9
86°
71°
10
86°
71°
11
88°
71°
12
88°
70°
13
86°
71°
14
90°
71°
15
87°
70°
16
85°
69°
17
87°
70°
18
86°
70°
19
88°
69°
20
89°
70°
21
85°
70°
22
85°
68°
23
87°
70°
24
90°
70°
25
89°
65°
26
87°
70°
27
90°
72°
28
91°
72°
29
91°
71°
30
90°
70°
31
90°
70°
1
82°
69°
2
84°
67°
3
84°
67°
4
85°
69°
5
84°
69°
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 65° and 72°. The average high for August is 87° 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.