S
M
T
W
T
F
S
30
78°
60°
31
79°
56°
1
78°
57°
2
77°
55°
3
76°
53°
4
76°
53°
5
77°
58°
6
77°
57°
7
78°
57°
8
77°
56°
9
76°
53°
10
77°
60°
11
80°
60°
12
80°
59°
13
82°
58°
14
80°
60°
15
81°
58°
16
80°
58°
17
79°
59°
18
80°
58°
19
79°
57°
20
77°
51°
21
80°
48°
22
74°
46°
23
69°
48°
24
Hist. Avg.
73°
50°
25
Hist. Avg.
73°
49°
26
Hist. Avg.
72°
49°
27
Hist. Avg.
72°
48°
28
Hist. Avg.
71°
48°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
70°
47°
1
Hist. Avg.
70°
46°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fishers
Fishers's September 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 46° and 60°. The average high for September is 78° 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 Fishers. See also: October | November | December.