S
M
T
W
T
F
S
30
95°
70°
31
97°
73°
1
98°
73°
2
99°
73°
3
100°
75°
4
100°
76°
5
101°
75°
6
98°
73°
7
91°
71°
8
90°
69°
9
94°
71°
10
94°
70°
11
84°
68°
12
89°
67°
13
94°
71°
14
93°
72°
15
92°
67°
16
85°
63°
17
85°
65°
18
82°
61°
19
82°
61°
20
81°
59°
21
83°
58°
22
85°
63°
23
86°
62°
24
87°
63°
25
87°
63°
26
86°
62°
27
86°
63°
28
85°
63°
29
86°
62°
30
85°
62°
1
85°
59°
2
83°
53°
3
73°
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 73° to 94°, with overnight lows between 49° and 72°. The average high for September is 86° 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.