S
M
T
W
T
F
S
30
51°
44°
31
48°
44°
1
51°
39°
2
50°
41°
3
56°
46°
4
60°
48°
5
57°
50°
6
56°
49°
7
55°
51°
8
51°
47°
9
52°
48°
10
53°
50°
11
54°
48°
12
51°
47°
13
54°
48°
14
53°
43°
15
54°
48°
16
48°
44°
17
52°
46°
18
51°
42°
19
41°
35°
20
45°
36°
21
43°
42°
22
43°
40°
23
46°
38°
24
49°
43°
25
49°
40°
26
50°
39°
27
45°
35°
28
44°
33°
29
45°
32°
30
40°
30°
1
44°
38°
2
40°
32°
3
40°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Hamilton
New Hamilton's September 2026 forecast shows daily high temperatures ranging from 40° to 50°, with overnight lows between 30° and 43°. The average high for September is 44° with an average low of 36°. 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 New Hamilton. See also: October | November | December.
