S
M
T
W
T
F
S
31
68°
62°
1
70°
58°
2
66°
55°
3
72°
60°
4
70°
54°
5
69°
51°
6
76°
47°
7
88°
52°
8
70°
54°
9
67°
51°
10
68°
50°
11
65°
54°
12
64°
52°
13
60°
50°
14
66°
47°
15
66°
59°
16
65°
54°
17
66°
52°
18
69°
58°
19
83°
51°
20
75°
59°
21
61°
53°
22
61°
50°
23
62°
48°
24
60°
51°
25
58°
49°
26
58°
46°
27
65°
41°
28
67°
44°
29
63°
47°
30
64°
47°
1
65°
44°
2
67°
51°
3
64°
54°
4
65°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dunkerque
Dunkerque's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Dunkerque. See also: October | November | December.
