S
M
T
W
T
F
S
30
97°
70°
31
97°
72°
1
100°
75°
2
99°
75°
3
100°
77°
4
100°
75°
5
99°
77°
6
102°
75°
7
95°
72°
8
100°
73°
9
97°
73°
10
97°
75°
11
93°
72°
12
93°
73°
13
99°
72°
14
97°
75°
15
99°
75°
16
99°
75°
17
99°
73°
18
99°
73°
19
100°
73°
20
99°
75°
21
95°
72°
22
90°
70°
23
75°
63°
24
79°
57°
25
86°
61°
26
86°
59°
27
84°
61°
28
86°
61°
29
91°
57°
30
94°
71°
1
93°
73°
2
84°
66°
3
75°
66°
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 75° to 94°, with overnight lows between 66° and 73°. The average high for September is 87° with an average low of 69°. 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.
