S
M
T
W
T
F
S
30
94°
71°
31
96°
72°
1
96°
74°
2
97°
73°
3
98°
74°
4
95°
74°
5
95°
73°
6
99°
74°
7
99°
74°
8
94°
74°
9
95°
72°
10
95°
71°
11
90°
74°
12
95°
73°
13
95°
74°
14
98°
72°
15
97°
70°
16
96°
74°
17
94°
70°
18
97°
66°
19
98°
69°
20
97°
72°
21
97°
73°
22
95°
71°
23
93°
68°
24
87°
67°
25
87°
65°
26
89°
66°
27
90°
63°
28
89°
65°
29
87°
67°
30
84°
65°
1
84°
63°
2
83°
59°
3
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Florence
Florence's September 2026 forecast shows daily high temperatures ranging from 83° to 95°, with overnight lows between 59° and 71°. The average high for September is 88° with an average low of 65°. 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 Florence. See also: October | November | December.