S
M
T
W
T
F
S
30
76°
60°
31
77°
58°
1
75°
59°
2
77°
60°
3
77°
59°
4
78°
58°
5
76°
57°
6
77°
58°
7
75°
55°
8
76°
56°
9
74°
62°
10
74°
55°
11
73°
55°
12
73°
56°
13
74°
61°
14
77°
57°
15
78°
59°
16
79°
61°
17
80°
62°
18
80°
61°
19
79°
52°
20
77°
52°
21
69°
57°
22
70°
58°
23
73°
59°
24
75°
60°
25
76°
51°
26
74°
48°
27
72°
50°
28
66°
48°
29
65°
49°
30
66°
50°
1
66°
56°
2
Hist. Avg.
69°
51°
3
Hist. Avg.
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Olmsted Falls
Olmsted Falls's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 48° and 62°. The average high for September is 74° 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 Olmsted Falls. See also: October | November | December.