S
M
T
W
T
F
S
30
88°
65°
31
88°
66°
1
84°
66°
2
86°
66°
3
86°
67°
4
88°
68°
5
86°
67°
6
N/A
7
85°
66°
8
87°
66°
9
77°
59°
10
70°
55°
11
73°
56°
12
73°
56°
13
74°
55°
14
75°
56°
15
77°
57°
16
70°
53°
17
69°
52°
18
67°
53°
19
65°
47°
20
66°
48°
21
70°
50°
22
71°
50°
23
71°
51°
24
70°
47°
25
71°
50°
26
71°
53°
27
70°
48°
28
67°
45°
29
67°
45°
30
68°
47°
1
64°
46°
2
66°
45°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Castion
Castion's September 2026 forecast shows daily high temperatures ranging from 64° to 87°, with overnight lows between 45° and 66°. The average high for September is 71° with an average low of 52°. 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 Castion. See also: October | November | December.
