S
M
T
W
T
F
S
30
71°
64°
31
70°
62°
1
68°
61°
2
69°
59°
3
71°
65°
4
71°
65°
5
N/A
6
77°
59°
7
77°
58°
8
64°
48°
9
66°
48°
10
67°
54°
11
66°
50°
12
66°
52°
13
65°
53°
14
67°
53°
15
68°
55°
16
67°
53°
17
68°
52°
18
65°
52°
19
66°
54°
20
65°
53°
21
68°
55°
22
68°
55°
23
67°
54°
24
69°
55°
25
68°
53°
26
65°
51°
27
64°
49°
28
64°
48°
29
63°
49°
30
64°
53°
1
64°
50°
2
63°
50°
3
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Bailleul
Bailleul's September 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 48° and 59°. The average high for September is 67° 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 Bailleul. See also: October | November | December.