S
M
T
W
T
F
S
30
73°
57°
31
77°
57°
1
79°
56°
2
79°
49°
3
73°
49°
4
71°
56°
5
70°
56°
6
78°
48°
7
72°
46°
8
68°
46°
9
69°
52°
10
70°
55°
11
71°
54°
12
76°
53°
13
76°
46°
14
67°
45°
15
64°
43°
16
65°
48°
17
65°
44°
18
66°
43°
19
68°
40°
20
63°
42°
21
63°
49°
22
65°
45°
23
71°
43°
24
69°
49°
25
71°
50°
26
69°
50°
27
71°
46°
28
71°
40°
29
68°
44°
30
59°
45°
1
65°
44°
2
68°
46°
3
58°
35°
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 58° to 79°, with overnight lows between 35° and 57°. The average high for September is 69° 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 Osseo. See also: October | November | December.
