S
M
T
W
T
F
S
30
78°
57°
31
79°
64°
1
73°
67°
2
69°
65°
3
88°
66°
4
82°
65°
5
79°
61°
6
74°
56°
7
79°
50°
8
80°
49°
9
82°
54°
10
84°
65°
11
78°
54°
12
80°
47°
13
79°
64°
14
71°
48°
15
72°
44°
16
79°
50°
17
77°
64°
18
82°
59°
19
71°
58°
20
68°
60°
21
71°
57°
22
68°
54°
23
68°
49°
24
68°
47°
25
73°
43°
26
67°
57°
27
62°
59°
28
66°
58°
29
65°
50°
30
75°
60°
1
76°
58°
2
83°
56°
3
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Franklin
Franklin's September 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 50° and 60°. The average high for September is 74° with an average low of 55°. 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. See also: October | November | December.