S
M
T
W
T
F
S
30
74°
55°
31
73°
54°
1
73°
52°
2
74°
57°
3
75°
52°
4
75°
54°
5
74°
56°
6
72°
52°
7
73°
51°
8
78°
56°
9
74°
50°
10
74°
49°
11
75°
56°
12
73°
53°
13
72°
47°
14
70°
57°
15
72°
58°
16
78°
54°
17
76°
47°
18
70°
45°
19
65°
44°
20
64°
46°
21
66°
44°
22
69°
49°
23
68°
46°
24
65°
44°
25
66°
43°
26
65°
44°
27
65°
44°
28
64°
43°
29
61°
42°
30
62°
39°
1
Hist. Avg.
66°
45°
2
Hist. Avg.
66°
44°
3
Hist. Avg.
65°
44°
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 78°, with overnight lows between 39° and 58°. The average high for September is 70° with an average low of 49°. 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.
