S
M
T
W
T
F
S
30
82°
64°
31
84°
64°
1
85°
62°
2
85°
57°
3
82°
62°
4
83°
63°
5
82°
62°
6
80°
62°
7
77°
61°
8
78°
54°
9
77°
52°
10
76°
60°
11
77°
60°
12
82°
59°
13
82°
61°
14
80°
59°
15
81°
60°
16
82°
60°
17
Hist. Avg.
78°
55°
18
Hist. Avg.
77°
54°
19
Hist. Avg.
77°
54°
20
Hist. Avg.
76°
54°
21
Hist. Avg.
76°
53°
22
Hist. Avg.
76°
53°
23
Hist. Avg.
75°
53°
24
Hist. Avg.
75°
52°
25
Hist. Avg.
74°
52°
26
Hist. Avg.
74°
52°
27
Hist. Avg.
74°
51°
28
Hist. Avg.
73°
51°
29
Hist. Avg.
73°
50°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
49°
3
Hist. Avg.
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Findlay
Findlay's September 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 52° and 64°. The average high for September is 81° with an average low of 60°. 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 Findlay. See also: October | November | December.