S
M
T
W
T
F
S
30
86°
66°
31
86°
66°
1
87°
65°
2
86°
66°
3
86°
65°
4
85°
64°
5
85°
65°
6
86°
66°
7
87°
66°
8
87°
65°
9
81°
64°
10
81°
63°
11
84°
65°
12
85°
65°
13
86°
63°
14
74°
52°
15
73°
59°
16
75°
58°
17
74°
55°
18
73°
53°
19
74°
51°
20
78°
54°
21
78°
56°
22
79°
58°
23
79°
49°
24
73°
48°
25
71°
56°
26
74°
57°
27
79°
47°
28
75°
46°
29
68°
47°
30
69°
54°
1
71°
54°
2
77°
53°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Germantown Hills
Germantown Hills's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 46° and 66°. 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 Hills. See also: October | November | December.