S
M
T
W
T
F
S
30
91°
70°
31
93°
69°
1
89°
67°
2
93°
67°
3
92°
64°
4
92°
61°
5
84°
60°
6
84°
63°
7
88°
64°
8
91°
68°
9
91°
68°
10
90°
67°
11
89°
66°
12
88°
65°
13
88°
64°
14
89°
65°
15
90°
65°
16
80°
61°
17
81°
64°
18
Hist. Avg.
82°
59°
19
Hist. Avg.
81°
58°
20
Hist. Avg.
81°
58°
21
Hist. Avg.
80°
57°
22
Hist. Avg.
80°
57°
23
Hist. Avg.
80°
56°
24
Hist. Avg.
79°
56°
25
Hist. Avg.
79°
56°
26
Hist. Avg.
78°
55°
27
Hist. Avg.
78°
55°
28
Hist. Avg.
78°
54°
29
Hist. Avg.
77°
54°
30
Hist. Avg.
77°
53°
1
Hist. Avg.
77°
53°
2
Hist. Avg.
76°
52°
3
Hist. Avg.
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Osage
Osage's September 2026 forecast shows daily high temperatures ranging from 80° to 93°, with overnight lows between 60° and 70°. The average high for September is 89° with an average low of 65°. 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. See also: October | November | December.
