S
M
T
W
T
F
S
30
85°
72°
31
86°
73°
1
89°
73°
2
88°
72°
3
87°
72°
4
87°
68°
5
85°
68°
6
83°
69°
7
84°
70°
8
84°
71°
9
85°
70°
10
85°
71°
11
86°
70°
12
86°
71°
13
85°
70°
14
86°
70°
15
86°
69°
16
85°
70°
17
86°
70°
18
86°
69°
19
85°
67°
20
84°
63°
21
82°
65°
22
78°
67°
23
79°
66°
24
83°
62°
25
81°
62°
26
77°
66°
27
79°
64°
28
78°
65°
29
80°
64°
30
81°
64°
1
80°
65°
2
80°
64°
3
76°
65°
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 76° to 89°, with overnight lows between 62° and 73°. The average high for September is 83° with an average low of 68°. 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.
