S
M
T
W
T
F
S
30
88°
71°
31
86°
72°
1
88°
71°
2
88°
65°
3
85°
63°
4
84°
62°
5
83°
63°
6
84°
65°
7
86°
64°
8
85°
69°
9
88°
69°
10
84°
62°
11
84°
62°
12
83°
67°
13
83°
60°
14
86°
60°
15
81°
59°
16
80°
60°
17
81°
59°
18
82°
60°
19
83°
59°
20
85°
61°
21
87°
64°
22
86°
64°
23
80°
63°
24
83°
62°
25
84°
62°
26
85°
62°
27
85°
61°
28
86°
61°
29
86°
62°
30
85°
61°
1
86°
61°
2
86°
56°
3
85°
53°
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 80° to 88°, 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.
