S
M
T
W
T
F
S
30
69°
63°
31
69°
61°
1
67°
60°
2
68°
61°
3
70°
65°
4
68°
62°
5
68°
58°
6
73°
55°
7
70°
62°
8
64°
58°
9
64°
57°
10
65°
60°
11
67°
59°
12
68°
63°
13
67°
61°
14
69°
62°
15
70°
58°
16
65°
57°
17
64°
56°
18
67°
58°
19
72°
59°
20
68°
57°
21
69°
58°
22
68°
55°
23
68°
55°
24
67°
54°
25
66°
54°
26
63°
52°
27
66°
55°
28
65°
50°
29
60°
48°
30
59°
49°
1
59°
52°
2
63°
54°
3
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in La Capelle-lès-Boulogne
La Capelle-lès-Boulogne's September 2026 forecast shows daily high temperatures ranging from 59° to 72°, with overnight lows between 48° and 63°. The average high for September is 66° with an average low of 56°. 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 La Capelle-lès-Boulogne. See also: October | November | December.
