S
M
T
W
T
F
S
30
85°
68°
31
92°
65°
1
94°
69°
2
97°
71°
3
97°
71°
4
96°
71°
5
96°
69°
6
82°
67°
7
84°
64°
8
85°
59°
9
88°
58°
10
93°
64°
11
95°
68°
12
88°
68°
13
90°
72°
14
91°
65°
15
84°
64°
16
86°
59°
17
92°
59°
18
97°
69°
19
88°
69°
20
90°
67°
21
92°
67°
22
85°
64°
23
68°
58°
24
63°
51°
25
73°
45°
26
77°
47°
27
75°
50°
28
75°
54°
29
75°
57°
30
76°
59°
1
75°
59°
2
74°
52°
3
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New London
New London's September 2026 forecast shows daily high temperatures ranging from 63° to 92°, with overnight lows between 45° and 67°. The average high for September is 76° with an average low of 56°. 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 New London. See also: October | November | December.
