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
66°
57°
21
69°
52°
22
64°
48°
23
64°
47°
24
62°
46°
25
65°
49°
26
66°
49°
27
67°
45°
28
67°
45°
29
68°
46°
30
70°
49°
1
69°
47°
2
71°
44°
3
63°
49°
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 62° to 71°, with overnight lows between 44° and 57°. The average high for September is 67° with an average low of 48°. 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.