S
M
T
W
T
F
S
30
85°
64°
31
79°
65°
1
78°
69°
2
79°
69°
3
84°
68°
4
84°
70°
5
84°
69°
6
84°
67°
7
83°
68°
8
81°
64°
9
79°
62°
10
77°
61°
11
76°
63°
12
79°
62°
13
80°
67°
14
82°
64°
15
79°
60°
16
77°
62°
17
76°
61°
18
78°
65°
19
79°
59°
20
80°
64°
21
78°
63°
22
80°
59°
23
76°
57°
24
74°
57°
25
74°
58°
26
73°
62°
27
78°
62°
28
78°
63°
29
77°
57°
30
77°
56°
1
71°
62°
2
77°
62°
3
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Franklin City
Franklin City's September 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 56° and 70°. The average high for September is 79° with an average low of 63°. 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 Franklin City. See also: October | November | December.