S
M
T
W
T
F
S
30
88°
64°
31
93°
70°
1
95°
70°
2
95°
70°
3
95°
72°
4
97°
72°
5
88°
68°
6
82°
64°
7
84°
59°
8
90°
63°
9
93°
68°
10
84°
68°
11
82°
63°
12
81°
68°
13
90°
63°
14
75°
54°
15
90°
69°
16
90°
70°
17
89°
67°
18
79°
61°
19
87°
68°
20
80°
64°
21
79°
61°
22
79°
60°
23
78°
59°
24
77°
54°
25
75°
53°
26
76°
52°
27
74°
53°
28
75°
48°
29
77°
54°
30
77°
54°
1
75°
53°
2
76°
52°
3
76°
52°
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 74° to 90°, with overnight lows between 48° and 70°. The average high for September is 79° with an average low of 58°. 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.
