S
M
T
W
T
F
S
30
73°
62°
31
75°
59°
1
73°
54°
2
70°
60°
3
79°
66°
4
72°
57°
5
73°
55°
6
79°
57°
7
77°
59°
8
64°
55°
9
66°
50°
10
68°
58°
11
73°
52°
12
73°
60°
13
73°
55°
14
75°
61°
15
74°
54°
16
69°
53°
17
68°
54°
18
69°
54°
19
71°
55°
20
69°
56°
21
70°
55°
22
70°
52°
23
70°
52°
24
69°
51°
25
68°
49°
26
67°
48°
27
67°
51°
28
66°
46°
29
61°
44°
30
61°
44°
1
62°
48°
2
65°
50°
3
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newington
Newington's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 44° and 61°. The average high for September is 68° 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 Newington. See also: October | November | December.