S
M
T
W
T
F
S
30
78°
63°
31
77°
64°
1
83°
59°
2
77°
59°
3
78°
58°
4
77°
56°
5
76°
56°
6
79°
61°
7
81°
61°
8
79°
60°
9
81°
61°
10
76°
60°
11
78°
60°
12
80°
59°
13
80°
60°
14
79°
60°
15
80°
59°
16
79°
52°
17
76°
56°
18
70°
59°
19
77°
58°
20
77°
58°
21
78°
56°
22
77°
49°
23
75°
54°
24
Hist. Avg.
72°
53°
25
Hist. Avg.
72°
52°
26
Hist. Avg.
72°
52°
27
Hist. Avg.
71°
51°
28
Hist. Avg.
71°
51°
29
Hist. Avg.
70°
50°
30
Hist. Avg.
70°
50°
1
Hist. Avg.
70°
50°
2
Hist. Avg.
69°
49°
3
Hist. Avg.
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Windsor
South Windsor's September 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 49° and 64°. The average high for September is 78° with an average low of 58°. 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 South Windsor. See also: October | November | December.
