S
M
T
W
T
F
S
30
69°
48°
31
69°
49°
1
71°
54°
2
74°
56°
3
71°
58°
4
78°
56°
5
81°
54°
6
75°
48°
7
69°
45°
8
70°
48°
9
73°
46°
10
74°
50°
11
73°
49°
12
68°
50°
13
72°
54°
14
76°
52°
15
75°
51°
16
67°
50°
17
66°
51°
18
68°
49°
19
70°
47°
20
65°
49°
21
70°
41°
22
65°
40°
23
63°
40°
24
63°
41°
25
65°
41°
26
62°
39°
27
61°
43°
28
61°
43°
29
59°
38°
30
59°
43°
1
60°
41°
2
67°
38°
3
59°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Belfort
Belfort's September 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 37° and 58°. 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 Belfort. See also: October | November | December.