S
M
T
W
T
F
S
30
88°
65°
31
91°
65°
1
89°
60°
2
88°
66°
3
90°
69°
4
86°
65°
5
86°
65°
6
82°
67°
7
85°
67°
8
84°
65°
9
80°
58°
10
81°
51°
11
87°
63°
12
74°
52°
13
71°
47°
14
60°
44°
15
72°
49°
16
75°
45°
17
71°
57°
18
61°
58°
19
61°
57°
20
64°
52°
21
62°
48°
22
62°
45°
23
64°
54°
24
61°
55°
25
68°
58°
26
65°
58°
27
70°
57°
28
70°
57°
29
66°
50°
30
68°
54°
1
70°
53°
2
65°
45°
3
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Osseo
Osseo's September 2026 forecast shows daily high temperatures ranging from 61° to 70°, with overnight lows between 45° and 58°. The average high for September is 66° with an average low of 53°. 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 Osseo. See also: October | November | December.
