S
M
T
W
T
F
S
30
72°
63°
31
70°
62°
1
71°
59°
2
71°
57°
3
73°
64°
4
73°
64°
5
71°
55°
6
76°
51°
7
N/A
8
70°
50°
9
66°
46°
10
68°
50°
11
69°
48°
12
71°
52°
13
70°
55°
14
72°
55°
15
71°
54°
16
69°
51°
17
68°
51°
18
69°
50°
19
71°
52°
20
66°
52°
21
68°
54°
22
68°
54°
23
69°
53°
24
70°
54°
25
70°
52°
26
66°
48°
27
63°
47°
28
64°
45°
29
65°
45°
30
64°
52°
1
65°
51°
2
63°
48°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kasterlee
Kasterlee's September 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 45° and 55°. The average high for September is 68° with an average low of 51°. 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 Kasterlee. See also: October | November | December.
