S
M
T
W
T
F
S
30
91°
66°
31
88°
65°
1
82°
63°
2
83°
59°
3
80°
58°
4
80°
62°
5
82°
65°
6
87°
64°
7
88°
63°
8
81°
62°
9
85°
63°
10
86°
56°
11
78°
55°
12
78°
55°
13
79°
56°
14
79°
61°
15
84°
62°
16
81°
61°
17
83°
60°
18
77°
53°
19
75°
51°
20
74°
55°
21
74°
56°
22
77°
58°
23
80°
58°
24
81°
59°
25
82°
50°
26
81°
49°
27
73°
50°
28
72°
49°
29
72°
49°
30
71°
48°
1
Hist. Avg.
77°
50°
2
Hist. Avg.
77°
50°
3
Hist. Avg.
77°
49°
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 71° to 91°, with overnight lows between 48° and 66°. The average high for September is 80° 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.
