S
M
T
W
T
F
S
26
84°
69°
27
86°
71°
28
93°
72°
29
93°
75°
30
90°
71°
31
89°
69°
1
88°
70°
2
87°
77°
3
84°
74°
4
85°
77°
5
89°
74°
6
89°
74°
7
88°
73°
8
89°
75°
9
86°
74°
10
89°
73°
11
90°
73°
12
91°
72°
13
92°
74°
14
88°
72°
15
91°
76°
16
83°
71°
17
88°
75°
18
90°
75°
19
91°
74°
20
91°
74°
21
89°
72°
22
87°
73°
23
88°
74°
24
89°
74°
25
89°
75°
26
90°
74°
27
87°
74°
28
84°
73°
29
86°
73°
30
89°
74°
31
88°
73°
1
87°
72°
2
89°
72°
3
84°
70°
4
83°
71°
5
83°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Castle Hayne
Castle Hayne's August 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 68° and 77°. The average high for August is 88° with an average low of 73°. 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 Castle Hayne. See also: September | October | November.