S
M
T
W
T
F
S
30
88°
55°
31
80°
56°
1
80°
62°
2
85°
56°
3
85°
62°
4
86°
63°
5
88°
55°
6
86°
53°
7
78°
53°
8
78°
52°
9
79°
57°
10
82°
59°
11
83°
51°
12
77°
52°
13
76°
51°
14
77°
58°
15
81°
51°
16
84°
49°
17
75°
48°
18
73°
48°
19
73°
49°
20
74°
49°
21
72°
48°
22
72°
48°
23
73°
49°
24
75°
51°
25
78°
54°
26
79°
53°
27
79°
45°
28
73°
52°
29
72°
53°
30
78°
51°
1
71°
50°
2
72°
47°
3
68°
43°
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 68° to 88°, with overnight lows between 43° and 63°. The average high for September is 78° with an average low of 52°. 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.
