S
M
T
W
T
F
S
30
75°
50°
31
75°
50°
1
76°
54°
2
76°
59°
3
77°
58°
4
84°
58°
5
84°
57°
6
81°
49°
7
77°
49°
8
76°
50°
9
75°
47°
10
74°
48°
11
74°
48°
12
73°
47°
13
77°
53°
14
80°
54°
15
77°
53°
16
72°
50°
17
73°
51°
18
72°
52°
19
75°
44°
20
73°
46°
21
73°
44°
22
76°
42°
23
70°
42°
24
69°
43°
25
69°
48°
26
70°
42°
27
69°
47°
28
69°
47°
29
67°
39°
30
67°
41°
1
68°
47°
2
73°
42°
3
70°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Germantown
Germantown's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 39° and 59°. The average high for September is 74° 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 Germantown. See also: October | November | December.
