S
M
T
W
T
F
S
30
73°
59°
31
73°
59°
1
72°
54°
2
70°
52°
3
70°
55°
4
77°
61°
5
68°
46°
6
70°
49°
7
80°
57°
8
69°
52°
9
65°
46°
10
63°
47°
11
63°
50°
12
63°
48°
13
62°
47°
14
63°
49°
15
66°
49°
16
65°
50°
17
66°
47°
18
64°
46°
19
64°
52°
20
65°
51°
21
64°
52°
22
65°
53°
23
66°
52°
24
67°
52°
25
67°
48°
26
65°
45°
27
61°
44°
28
61°
43°
29
60°
43°
30
61°
50°
1
61°
46°
2
59°
44°
3
62°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grebenstein
Grebenstein's September 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 43° and 57°. The average high for September is 65° with an average low of 48°. 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 Grebenstein. See also: October | November | December.
