S
M
T
W
T
F
S
30
82°
52°
31
89°
55°
1
77°
55°
2
77°
52°
3
75°
52°
4
77°
57°
5
N/A
6
66°
47°
7
70°
52°
8
80°
56°
9
87°
59°
10
70°
53°
11
64°
52°
12
69°
53°
13
65°
52°
14
63°
51°
15
63°
50°
16
62°
50°
17
66°
51°
18
67°
52°
19
69°
53°
20
67°
52°
21
66°
52°
22
60°
51°
23
62°
52°
24
66°
51°
25
67°
51°
26
67°
49°
27
59°
46°
28
57°
45°
29
56°
42°
30
55°
42°
1
55°
44°
2
56°
42°
3
56°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ostrów
Ostrów's September 2026 forecast shows daily high temperatures ranging from 55° to 87°, with overnight lows between 42° and 59°. The average high for September is 65° 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 Ostrów. See also: October | November | December.
