S
M
T
W
T
F
S
30
90°
68°
31
86°
64°
1
82°
61°
2
88°
66°
3
90°
72°
4
88°
70°
5
82°
66°
6
73°
68°
7
81°
66°
8
88°
63°
9
81°
55°
10
81°
52°
11
88°
63°
12
73°
52°
13
72°
48°
14
63°
54°
15
72°
54°
16
75°
46°
17
68°
59°
18
63°
61°
19
61°
57°
20
68°
51°
21
55°
47°
22
61°
44°
23
63°
52°
24
63°
50°
25
68°
52°
26
65°
51°
27
68°
49°
28
69°
50°
29
66°
46°
30
69°
46°
1
70°
50°
2
67°
42°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sleepy Eye
Sleepy Eye's September 2026 forecast shows daily high temperatures ranging from 55° to 70°, with overnight lows between 42° and 52°. The average high for September is 65° with an average low of 48°. 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 Sleepy Eye. See also: October | November | December.
