S
M
T
W
T
F
S
30
93°
70°
31
95°
71°
1
97°
72°
2
98°
71°
3
97°
74°
4
94°
73°
5
89°
75°
6
97°
73°
7
98°
72°
8
93°
71°
9
93°
69°
10
92°
72°
11
78°
74°
12
91°
73°
13
94°
71°
14
96°
71°
15
97°
69°
16
93°
69°
17
91°
64°
18
95°
61°
19
97°
66°
20
95°
68°
21
94°
68°
22
94°
69°
23
92°
67°
24
85°
66°
25
84°
61°
26
88°
57°
27
90°
58°
28
90°
56°
29
92°
55°
30
91°
65°
1
90°
69°
2
88°
71°
3
83°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Castleberry
Castleberry's September 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 65° and 73°. The average high for September is 88° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Castleberry. See also: October | November | December.
