S
M
T
W
T
F
S
30
84°
65°
31
83°
59°
1
79°
57°
2
76°
58°
3
77°
59°
4
78°
58°
5
79°
58°
6
75°
59°
7
75°
57°
8
76°
61°
9
75°
57°
10
74°
56°
11
75°
57°
12
76°
56°
13
75°
57°
14
74°
56°
15
73°
57°
16
73°
54°
17
74°
55°
18
72°
54°
19
73°
59°
20
71°
59°
21
73°
52°
22
70°
51°
23
Hist. Avg.
73°
57°
24
Hist. Avg.
72°
56°
25
Hist. Avg.
72°
56°
26
Hist. Avg.
72°
56°
27
Hist. Avg.
71°
55°
28
Hist. Avg.
71°
55°
29
Hist. Avg.
70°
54°
30
Hist. Avg.
70°
54°
1
Hist. Avg.
70°
53°
2
Hist. Avg.
69°
53°
3
Hist. Avg.
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Germantown
Germantown's September 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 51° and 65°. The average high for September is 75° with an average low of 57°. 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.
