S
M
T
W
T
F
S
30
83°
55°
31
79°
56°
1
70°
59°
2
75°
59°
3
77°
61°
4
84°
60°
5
73°
56°
6
71°
50°
7
80°
47°
8
79°
52°
9
80°
52°
10
85°
67°
11
76°
49°
12
78°
42°
13
71°
62°
14
73°
47°
15
71°
40°
16
79°
48°
17
82°
61°
18
81°
49°
19
66°
47°
20
63°
54°
21
66°
49°
22
60°
51°
23
62°
49°
24
65°
47°
25
64°
49°
26
65°
47°
27
68°
47°
28
67°
49°
29
70°
50°
30
68°
50°
1
70°
46°
2
72°
50°
3
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Newton
West Newton's September 2026 forecast shows daily high temperatures ranging from 60° to 81°, with overnight lows between 46° and 54°. The average high for September is 67° with an average low of 49°. 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 West Newton. See also: October | November | December.