S
M
T
W
T
F
S
30
82°
66°
31
87°
64°
1
84°
55°
2
86°
62°
3
90°
66°
4
86°
65°
5
85°
61°
6
82°
67°
7
N/A
8
82°
57°
9
74°
52°
10
81°
61°
11
80°
53°
12
72°
52°
13
63°
52°
14
64°
47°
15
65°
46°
16
66°
48°
17
66°
48°
18
65°
49°
19
67°
48°
20
67°
47°
21
66°
46°
22
70°
52°
23
70°
53°
24
72°
52°
25
66°
51°
26
68°
52°
27
69°
52°
28
69°
51°
29
67°
50°
30
59°
48°
1
57°
44°
2
55°
40°
3
55°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Osakis
Osakis's September 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 40° and 61°. 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 Osakis. See also: October | November | December.