S
M
T
W
T
F
S
30
82°
62°
31
88°
59°
1
87°
61°
2
76°
58°
3
78°
56°
4
78°
51°
5
81°
59°
6
61°
50°
7
71°
49°
8
72°
50°
9
80°
57°
10
86°
60°
11
75°
57°
12
75°
58°
13
71°
54°
14
70°
54°
15
70°
53°
16
69°
52°
17
70°
53°
18
71°
54°
19
72°
54°
20
71°
52°
21
68°
51°
22
67°
51°
23
65°
50°
24
68°
49°
25
67°
50°
26
68°
50°
27
67°
47°
28
60°
46°
29
56°
44°
30
54°
42°
1
58°
48°
2
64°
46°
3
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oster
Oster's September 2026 forecast shows daily high temperatures ranging from 54° to 86°, with overnight lows between 42° and 60°. The average high for September is 68° with an average low of 51°. 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 Oster. See also: October | November | December.
