S
M
T
W
T
F
S
30
93°
70°
31
92°
66°
1
88°
70°
2
92°
72°
3
93°
71°
4
93°
72°
5
92°
70°
6
92°
64°
7
86°
63°
8
85°
63°
9
84°
64°
10
90°
68°
11
91°
68°
12
90°
67°
13
83°
65°
14
86°
68°
15
90°
63°
16
89°
60°
17
82°
59°
18
80°
59°
19
80°
60°
20
81°
58°
21
79°
58°
22
79°
57°
23
80°
58°
24
80°
62°
25
81°
62°
26
85°
63°
27
86°
62°
28
85°
63°
29
85°
61°
30
83°
56°
1
78°
59°
2
81°
53°
3
76°
54°
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 93°, with overnight lows between 53° and 72°. The average high for September is 85° with an average low of 63°. 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.
