S
M
T
W
T
F
S
30
86°
58°
31
77°
57°
1
77°
57°
2
78°
62°
3
78°
57°
4
79°
64°
5
81°
63°
6
83°
57°
7
81°
56°
8
75°
55°
9
75°
54°
10
74°
61°
11
76°
54°
12
77°
54°
13
74°
53°
14
73°
60°
15
77°
59°
16
79°
51°
17
80°
51°
18
71°
50°
19
70°
51°
20
70°
51°
21
69°
52°
22
68°
50°
23
67°
54°
24
69°
55°
25
69°
54°
26
75°
56°
27
74°
51°
28
75°
47°
29
67°
47°
30
67°
53°
1
66°
55°
2
70°
53°
3
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newington Junction
Newington Junction's September 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 47° and 64°. The average high for September is 74° with an average low of 55°. 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 Junction. See also: October | November | December.