S
M
T
W
T
F
S
30
70°
48°
31
69°
48°
1
69°
47°
2
70°
45°
3
68°
45°
4
68°
49°
5
69°
46°
6
67°
49°
7
67°
47°
8
68°
46°
9
66°
44°
10
67°
50°
11
66°
53°
12
73°
50°
13
73°
46°
14
65°
44°
15
65°
46°
16
65°
42°
17
63°
41°
18
Hist. Avg.
65°
48°
19
Hist. Avg.
64°
48°
20
Hist. Avg.
64°
48°
21
Hist. Avg.
64°
47°
22
Hist. Avg.
63°
47°
23
Hist. Avg.
63°
47°
24
Hist. Avg.
62°
47°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
62°
46°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
61°
45°
30
Hist. Avg.
60°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
59°
45°
3
Hist. Avg.
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kastl
Kastl's September 2026 forecast shows daily high temperatures ranging from 63° to 73°, with overnight lows between 41° and 53°. The average high for September is 68° with an average low of 47°. 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 Kastl. See also: October | November | December.