S
M
T
W
T
F
S
26
87°
70°
27
87°
68°
28
87°
67°
29
88°
68°
30
90°
71°
31
91°
72°
1
90°
68°
2
91°
67°
3
90°
71°
4
87°
67°
5
86°
66°
6
87°
66°
7
86°
67°
8
85°
67°
9
86°
68°
10
86°
71°
11
87°
70°
12
87°
68°
13
90°
70°
14
91°
69°
15
91°
69°
16
86°
68°
17
88°
70°
18
90°
67°
19
86°
66°
20
85°
65°
21
86°
67°
22
85°
69°
23
85°
69°
24
89°
70°
25
89°
69°
26
88°
69°
27
87°
70°
28
85°
69°
29
84°
69°
30
84°
64°
31
88°
63°
1
84°
64°
2
84°
64°
3
83°
68°
4
86°
68°
5
86°
66°
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 83° to 91°, with overnight lows between 63° and 72°. The average high for August is 87° 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.