S
M
T
W
T
F
S
30
82°
57°
31
82°
51°
1
79°
50°
2
74°
52°
3
74°
51°
4
75°
51°
5
73°
50°
6
73°
49°
7
74°
49°
8
74°
50°
9
73°
55°
10
72°
50°
11
74°
52°
12
76°
52°
13
77°
51°
14
75°
52°
15
71°
48°
16
71°
49°
17
68°
48°
18
70°
50°
19
69°
46°
20
69°
54°
21
Hist. Avg.
72°
54°
22
Hist. Avg.
72°
54°
23
Hist. Avg.
71°
54°
24
Hist. Avg.
71°
53°
25
Hist. Avg.
70°
53°
26
Hist. Avg.
70°
52°
27
Hist. Avg.
70°
52°
28
Hist. Avg.
69°
51°
29
Hist. Avg.
69°
51°
30
Hist. Avg.
68°
50°
1
Hist. Avg.
68°
50°
2
Hist. Avg.
67°
50°
3
Hist. Avg.
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Newton
Newton's September 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 46° and 57°. The average high for September is 74° with an average low of 51°. 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 Newton. See also: October | November | December.
