S
M
T
W
T
F
S
30
92°
61°
31
83°
65°
1
87°
66°
2
91°
66°
3
92°
68°
4
91°
66°
5
91°
61°
6
88°
57°
7
81°
56°
8
81°
58°
9
82°
64°
10
84°
62°
11
80°
55°
12
79°
56°
13
78°
60°
14
79°
61°
15
86°
52°
16
86°
52°
17
75°
51°
18
75°
52°
19
76°
51°
20
74°
50°
21
74°
50°
22
75°
51°
23
75°
49°
24
78°
53°
25
77°
57°
26
81°
56°
27
81°
56°
28
75°
57°
29
81°
47°
30
80°
48°
1
73°
50°
2
72°
46°
3
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Osage Bend
Osage Bend's September 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 46° and 68°. The average high for September is 81° with an average low of 56°. 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 Osage Bend. See also: October | November | December.