S
M
T
W
T
F
S
30
84°
69°
31
90°
66°
1
95°
71°
2
96°
72°
3
96°
72°
4
98°
72°
5
93°
70°
6
88°
69°
7
83°
66°
8
84°
65°
9
87°
66°
10
85°
67°
11
87°
66°
12
85°
63°
13
83°
62°
14
84°
61°
15
83°
65°
16
77°
65°
17
76°
64°
18
80°
64°
19
77°
61°
20
76°
59°
21
76°
56°
22
77°
59°
23
78°
60°
24
81°
64°
25
81°
63°
26
77°
62°
27
74°
63°
28
75°
63°
29
76°
62°
30
77°
60°
1
72°
59°
2
72°
60°
3
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newton
Newton's September 2026 forecast shows daily high temperatures ranging from 72° to 98°, with overnight lows between 56° and 72°. The average high for September is 82° with an average low of 64°. 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.
