S
M
T
W
T
F
S
30
81°
51°
31
74°
48°
1
73°
48°
2
72°
49°
3
72°
47°
4
73°
48°
5
72°
48°
6
71°
49°
7
72°
53°
8
74°
53°
9
71°
48°
10
71°
48°
11
72°
49°
12
70°
46°
13
71°
50°
14
70°
51°
15
69°
47°
16
69°
45°
17
67°
44°
18
68°
45°
19
67°
52°
20
67°
53°
21
Hist. Avg.
71°
51°
22
Hist. Avg.
71°
50°
23
Hist. Avg.
70°
50°
24
Hist. Avg.
70°
50°
25
Hist. Avg.
69°
50°
26
Hist. Avg.
69°
49°
27
Hist. Avg.
68°
49°
28
Hist. Avg.
68°
48°
29
Hist. Avg.
67°
48°
30
Hist. Avg.
67°
48°
1
Hist. Avg.
66°
47°
2
Hist. Avg.
66°
47°
3
Hist. Avg.
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Belgium
Belgium's September 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 44° and 53°. The average high for September is 71° with an average low of 49°. 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 Belgium. See also: October | November | December.
