S
M
T
W
T
F
S
30
90°
67°
31
85°
61°
1
81°
52°
2
86°
60°
3
93°
69°
4
89°
61°
5
90°
72°
6
84°
65°
7
78°
65°
8
85°
58°
9
77°
54°
10
84°
51°
11
90°
61°
12
69°
51°
13
69°
46°
14
66°
54°
15
70°
50°
16
70°
44°
17
69°
56°
18
62°
58°
19
60°
57°
20
61°
54°
21
58°
50°
22
66°
50°
23
70°
54°
24
61°
59°
25
64°
58°
26
65°
59°
27
72°
59°
28
70°
62°
29
67°
55°
30
70°
45°
1
66°
41°
2
63°
45°
3
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Poinsett
Lake Poinsett's September 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 41° and 62°. The average high for September is 68° with an average low of 50°. 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 Lake Poinsett. See also: October | November | December.
