S
M
T
W
T
F
S
30
70°
57°
31
67°
54°
1
69°
52°
2
65°
53°
3
66°
54°
4
65°
51°
5
64°
50°
6
64°
49°
7
65°
50°
8
66°
50°
9
65°
49°
10
64°
50°
11
69°
51°
12
67°
50°
13
66°
53°
14
64°
53°
15
63°
50°
16
63°
46°
17
64°
47°
18
63°
47°
19
62°
45°
20
62°
49°
21
63°
51°
22
62°
52°
23
62°
49°
24
63°
48°
25
61°
46°
26
62°
45°
27
60°
49°
28
60°
45°
29
61°
46°
30
63°
47°
1
64°
49°
2
64°
50°
3
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nijmegen
Nijmegen's September 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 45° and 57°. The average high for September is 64° with an average low of 50°. 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 Nijmegen. See also: October | November | December.