S
M
T
W
T
F
S
26
93°
77°
27
95°
74°
28
96°
74°
29
96°
75°
30
97°
76°
31
95°
74°
1
94°
75°
2
92°
71°
3
87°
67°
4
93°
67°
5
94°
69°
6
95°
72°
7
94°
70°
8
96°
71°
9
96°
70°
10
97°
71°
11
98°
73°
12
98°
73°
13
99°
74°
14
99°
75°
15
96°
74°
16
99°
75°
17
100°
73°
18
97°
72°
19
97°
73°
20
97°
71°
21
94°
72°
22
92°
70°
23
93°
66°
24
94°
67°
25
96°
71°
26
95°
70°
27
94°
69°
28
91°
73°
29
92°
73°
30
91°
72°
31
89°
73°
1
88°
73°
2
88°
72°
3
89°
71°
4
88°
67°
5
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Castleberry
Castleberry's August 2026 forecast shows daily high temperatures ranging from 87° to 100°, with overnight lows between 66° and 75°. The average high for August is 93° with an average low of 71°. 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 Castleberry. See also: September | October | November.