S
M
T
W
T
F
S
30
89°
70°
31
91°
68°
1
93°
68°
2
95°
70°
3
97°
72°
4
95°
70°
5
93°
70°
6
95°
70°
7
84°
69°
8
86°
70°
9
84°
70°
10
86°
69°
11
86°
67°
12
88°
66°
13
87°
65°
14
88°
62°
15
87°
63°
16
85°
63°
17
85°
61°
18
86°
62°
19
84°
59°
20
81°
62°
21
86°
63°
22
85°
62°
23
85°
62°
24
84°
61°
25
85°
62°
26
85°
62°
27
84°
61°
28
85°
62°
29
84°
61°
30
84°
60°
1
83°
60°
2
81°
58°
3
74°
54°
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 74° to 95°, with overnight lows between 54° and 70°. The average high for September is 85° 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. See also: October | November | December.