S
M
T
W
T
F
S
30
74°
52°
31
78°
54°
1
70°
57°
2
70°
60°
3
79°
61°
4
80°
59°
5
72°
53°
6
71°
49°
7
79°
44°
8
74°
47°
9
70°
50°
10
82°
58°
11
72°
45°
12
75°
43°
13
71°
60°
14
68°
44°
15
70°
41°
16
76°
51°
17
76°
58°
18
74°
48°
19
64°
39°
20
53°
39°
21
63°
46°
22
66°
41°
23
66°
39°
24
69°
39°
25
75°
40°
26
68°
50°
27
59°
54°
28
57°
55°
29
65°
54°
30
71°
51°
1
76°
63°
2
74°
48°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hanover
Hanover's September 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 46° and 63°. The average high for September is 70° with an average low of 52°. 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 Hanover. See also: October | November | December.