S
M
T
W
T
F
S
30
75°
62°
31
70°
61°
1
78°
66°
2
85°
64°
3
85°
66°
4
81°
65°
5
77°
59°
6
76°
55°
7
78°
53°
8
78°
62°
9
78°
67°
10
76°
55°
11
71°
50°
12
78°
62°
13
79°
56°
14
73°
55°
15
77°
58°
16
72°
53°
17
68°
50°
18
65°
49°
19
62°
48°
20
66°
48°
21
65°
47°
22
65°
52°
23
68°
52°
24
68°
51°
25
71°
52°
26
72°
48°
27
65°
45°
28
70°
51°
29
72°
52°
30
73°
52°
1
73°
51°
2
71°
49°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Central Square
Central Square's September 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 45° and 67°. The average high for September is 71° 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 Central Square. See also: October | November | December.