S
M
T
W
T
F
S
30
68°
52°
31
67°
50°
1
67°
51°
2
68°
52°
3
66°
52°
4
66°
50°
5
67°
51°
6
65°
48°
7
65°
46°
8
66°
47°
9
66°
48°
10
68°
49°
11
67°
51°
12
63°
53°
13
64°
52°
14
65°
52°
15
68°
46°
16
65°
45°
17
63°
48°
18
66°
53°
19
68°
54°
20
69°
53°
21
68°
53°
22
68°
52°
23
67°
53°
24
68°
51°
25
65°
49°
26
61°
48°
27
61°
49°
28
62°
50°
29
64°
51°
30
65°
50°
1
Hist. Avg.
57°
44°
2
Hist. Avg.
57°
44°
3
Hist. Avg.
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Holzminden
Holzminden's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 45° and 54°. The average high for September is 66° 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 Holzminden. See also: October | November | December.